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Blur 150/200 Aftermarket Exhaust and Suspension

 
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Meeners
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2006 Blur 150, 2007 LF150T-9a, 2006 KTM 950SM, 2003 KTM 450 EXC/SM

PostPosted: Tue Sep 01, 2015 3:01 pm    Post subject: Blur 150/200 Aftermarket Exhaust and Suspension Reply with quote

Hey Guys,

I've been riding for a while now and have owned a plethora of wierd bikes over the last 6 years or so. I love bikes that are different and that I don't see a lot of. I love bikes that are rare. That said, I purchased a 2006 Blur last month. I do love the fact that as far as engine modifications there is flex with use of some of the typical GY6 variants. In all honesty, I think the motor is a little restricted in the blur, but it's essentially only an air box mod, and a small amount of jetting away from being amazing. I find it interesting that even thought there is a large following of the PGO GMax overseas, that the aftermarket is somewhat lacking from a suspension/exhaust perspective... but it's okay. The bike is set up pretty decently. I'll get to the nitty gritty.

Rear Monoshock
The rear suspension on this bike is pretty trick, similar to the Peugeot Jet Force. My only gripe is the bike is a little low for me I have been scraping the crap out of the center stand kick. Two things I'd like to do is 1) raise the bike, and 2) stiffen up the rear a tad as I'm 230lb with gear on. Since the rear is essentially nonadjustable I have been on the search for a serviceable aftermarket shock. I ended up looking for something that had an eye to eye length of 260mm. I've had good luck with reservoir style RFY's Ohlins copies on my girlfriends LF150, however since this is a linkage system and we require two eyes it's a little different. Nonetheless, I've ordered a shock that is serviceable and has adjustments for preload and rebound. I'll report back if I have success after I recieve it and do some measurements. The spring rate I need might be a little interesting to figure out as I don't have any clue what the OEM spring is rated, but I'll check what the static and rider sag. The good thing about the shock I've found is the manufacturer offers different springs for sale.

Forks
Fork wise I'm assuming it's similar to the typical 30mm chinese forks (which is great). I was actually how surprised how balanced the bike is from the factory. I prefer a little rake on my bikes to keep weight on the front so depending on how the shock works, I may need to adjust the front forks. I might experiment with utilizing some thicker fluid to slow down compression and rebound a little. Possibly even find a way to shim for preload if necessary. If necessary, I have a stiffer set of springs in the garage I removed from my girlfriends bike (if they fit).

Exhaust
I actually love the exhausts appearance on this bike. I think it looks and sounds pretty decent, however - I'm like everyone else and would love to have the option of putting on another pipe if I want. Does anyone know what the existing header pipe diameter is? I'm going to fabricate something based off of a readily available GY6 Exhaust that will slip fit on where the stock exhaust slips on.

Happy Scooting! I'll post some pictures later!


Last edited by Meeners on Thu Sep 03, 2015 5:46 pm; edited 2 times in total
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babblefish
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2006 Blur 180, 2008 Buddy St. Tropez

PostPosted: Wed Sep 02, 2015 5:19 am    Post subject: Reply with quote

Glad to see someone else doing Blur upgrades. I've done some mods to my front forks, but not the rear yet. I'd be interested in knowing more about your rear shock.

For the front, I installed a preload spacer which helped a lot in firming up the front. I also changed the shock oil to straight 20 wt (heaviest I could find). Stock oil is spec'd at 10W20.

The center stand was getting in the way of lean angles for me too so I removed it. I just have to be more mindful of how and where I park otherwise the scooter will fall over (and it has Sad).

I'm currently modifying a generic GY6 performance exhaust system to fit the Blur. Since my engine has an aftermarket head on it with bigger ports, I wanted an exhaust system with a larger diameter pipe to match for the best flow. The problem with trying to fit a generic system is the Blur's rear suspension linkage. It limits how far down the exhaust pipe can hang below the engine right where it attaches to the head. I'll post some pictures of what I'm talking about in the next couple of days. I'll also measure the pipe diameter right where the muffler slips onto the pipe. BTW: the exhaust system I bought uses a slip-on muffler held in place by springs so that I can experiment with different mufflers if I wanted to.

if you want to know more of what I've done: www.modernbuddy.com/forum/topic16629.html

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Meeners
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2006 Blur 150, 2007 LF150T-9a, 2006 KTM 950SM, 2003 KTM 450 EXC/SM

PostPosted: Wed Sep 02, 2015 1:02 pm    Post subject: Reply with quote

I'm locked in now. It's truly is a great scooter for the price (for the brakes alone). I actually have been reading a bit of your thread over the past month or so. I have to say kudos on finding out the recipes to rebuild and document your findings. That will more than help more people in the future as these motors get tired. Mine has 15,000 BDU's and it's good to know that I have top end options I can look into possibly over the winter. First and foremost - Thanks!

Rear Shock Info
The rear shock I intended to try was an ohlins copy with a reservoir, but I realized it wouldn't fit with the Blur's orientation (without modification to the storage). A remote reservoir would be ideal, but before I went that route I decided to just skip the reservoir for the time being and just see what we can get to fit in there. Having something serviceable was the most important. At this time I purchased a Piranha, Fast-Ace, DNM style BDa01 mono shock. Supposedly you can purchase different springs from 250in-lbs all the way to 1000. From what I can find the BDA01 shock with the white spring is supposed to be designed for pit bikes with an A-Arm "linkage" as opposed to the BDa01AR which is designed for a non linkage (like the late model KTM PDS Linkless stuff). I got one with a 250lb spring and from what I can find the spring coil diameter is not too much larger than the stock 7mm diameter... So it might be close, it might be way off. I'm weary it will work at all, but it's worth the $ to bolt it up and find out! We need to be able to play with these things.

Forks
Cool! So the forks have some versatility. That's awesome. I know I found a 30wt to try in the girls bike that could be beneficial. Let me find which brand I planned to use.

Center Stand Use
That damned center stand. We ended up raising the girls LF bike about 1" in the rear and now thankfully we don't rub anymore. Hopefully if we find what works in the rear of the Blur, you can get yours back on as well. Her tire is barely touching the ground mildly loaded with the center stand up, but it works great.

Exhaust
Awesome! I'm sure your motor wants to breathe. Man, I hear you... If I was a welder I would love to just make something custom for ya. Do you have any idea what your motor will be pushing hp wise? You have 61mm bore and a little stroke I presume? I know there is a formula or rule of thumb you can use to calculate exhaust size vs CFM. I wouldn't be surprised if the stock header pipe diameter could handle quite a bit peak.

edit: http://www.mk5cortinaestate.co.uk/calculator5.php
You have some decent work done. I wouldn't be surprised if your 180cc was capable of 13-15hp crank. From what I can tell, the 200cc bored/stroked fellas are in the 15-18hp field. Let's say best case scenario 20hp is attainable. According to the calculator, 18mm would support. Nonetheless, I'm excited you are trying some new things with the exhaust.

Since I'm virtually stock, I was planning on ordering this part (M2262360000 2 2 WAY CONNECTOR) and weld an aftermarket pipe on if possible. I wonder how hard it would be to get that piece.

I'll post up hopefully more this evening.
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babblefish
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PostPosted: Thu Sep 03, 2015 8:38 am    Post subject: Reply with quote

I updated my Blur thread with my latest exhaust work: http://www.modernbuddy.com/forum/topic16629.html.

The stock exhaust header pipe is 25.5mm O.D. and 22mm I.D.

My engine had about 16k miles on it when the connecting rod bearing gave up. Previous owner was kinda on the heavy side and he occasionally had his wife on the back running full throttle on the highway. Probably stressed the heck out of the engine, though he did keep up on the maintenance.

As far as ride height, I'm not very tall so I don't really want to raise the scooter up too much on it's suspension plus I'm a bit lighter than you at about 160lb. At this point, I don't really miss the use of the center stand and the increased lean angles available more than makes up for it's absence. With that being said, I wouldn't mind it if the rear suspension was a bit more firm with more dampening, hence the interest in replacing the rear shock. If I can't find a bolt-on replacement, I was going to remove the stock shock to see if I can disassemble it to replace the stock oil with a heavier viscosity and to install a pre-load spacer to stiffen things up. Viagra for my shock, if you will, lol. Another option would be to change the linkage geometry in order to firm things up, but it wouldn't do anything for the dampening.

Yeah, the new bore is 61mm and the stroke is now 62mm giving 180cc. I condensed the information about the engine mods in this thread in case you're interested: http://www.modernbuddy.com/forum/topic28336.html

Are you sure you know what "M2262360000 2 2 WAY CONNECTOR" is? It's a small plastic tube for connecting a 5mm diameter rubber hose to the air filter box to carb rubber hose (item 8 ). It is item number "9" in the attached drawing. Don't think you're going to do any welding to that. Smile But, if you still want it, www.scooterloungeonline.com has it listed for $1.16.


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Meeners
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2006 Blur 150, 2007 LF150T-9a, 2006 KTM 950SM, 2003 KTM 450 EXC/SM

PostPosted: Thu Sep 03, 2015 12:40 pm    Post subject: Reply with quote

babblefish wrote:
I updated my Blur thread with my latest exhaust work: http://www.modernbuddy.com/forum/topic16629.html.

The stock exhaust header pipe is 25.5mm O.D. and 22mm I.D.

Thank you for this information! This is good to hear.

babblefish wrote:
My engine had about 16k miles on it when the connecting rod bearing gave up. Previous owner was kinda on the heavy side and he occasionally had his wife on the back running full throttle on the highway. Probably stressed the heck out of the engine, though he did keep up on the maintenance.

That's actually not too terrible. 16k miles on a little 150cc. I would expect I'd need to do some bottom end preventative maintenance by then. I think I have 15kBDU's so what is that 9k miles? I think i could look into doing that next winter.

babblefish wrote:
As far as ride height, I'm not very tall so I don't really want to raise the scooter up too much on it's suspension plus I'm a bit lighter than you at about 160lb. At this point, I don't really miss the use of the center stand and the increased lean angles available more than makes up for it's absence. With that being said, I wouldn't mind it if the rear suspension was a bit more firm with more dampening, hence the interest in replacing the rear shock. If I can't find a bolt-on replacement, I was going to remove the stock shock to see if I can disassemble it to replace the stock oil with a heavier viscosity and to install a pre-load spacer to stiffen things up. Viagra for my shock, if you will, lol. Another option would be to change the linkage geometry in order to firm things up, but it wouldn't do anything for the dampening.

Cool. I have some options for you then. Let's just say hold off on doing anything with the stock shock.

babblefish wrote:
Yeah, the new bore is 61mm and the stroke is now 62mm giving 180cc. I condensed the information about the engine mods in this thread in case you're interested: http://www.modernbuddy.com/forum/topic28336.html

Nice! I checked it out yesterday. I didn't know if you decided to stay with the stock stroke or continue with the stroker crank. I saw the issue with the kick starter gear.

babblefish wrote:
Are you sure you know what "M2262360000 2 2 WAY CONNECTOR" is? It's a small plastic tube for connecting a 5mm diameter rubber hose to the air filter box to carb rubber hose (item 8 ). It is item number "9" in the attached drawing. Don't think you're going to do any welding to that. Smile But, if you still want it, www.scooterloungeonline.com has it listed for $1.16.


Good looking out on the part number, I realized I looked at the page up e11.1 description instead of e12! Thanks Brother.

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2006 Blur 150, 2007 LF150T-9a, 2006 KTM 950SM, 2003 KTM 450 EXC/SM

PostPosted: Thu Sep 03, 2015 3:08 pm    Post subject: Aftermarket Suspension Trial on Genuine Blur Reply with quote

Okay. So here we go. Just to follow up I ended up purchasing a Fastace BDa01 w/ a 250lb spring to test out with the linkage suspension on the Blur.

1. At first glance the piece looks great. The first thing I did was unload all the preload and remove the spring and push the piston in and out to check for cavitation. Usually these cheaper shocks they use chincy fluid and most of the time they don't even fill it up all the way. Also a lot of the times the adjustment knobs are all fake. I was surprised to see that this was thankfully not true for these. The rebound adjustment actually works well and I couldn't feel any air bubbles. Another cool thing is that the bolt bushings are replaceable in case your bolt size differs.


2. First step is to expose the rear shock and remove it. This is very simple to do. All you need to do is remove the 4 bolts for the seat and move the supplemental plastic gas container out of the way. You can leave the bike on the center stand. The top shock is mounted by a 14mm bolt, and the bottom consists of a 14mm bolt and nut. The best way to relieve the tension from the suspension linkage is to use a small angled tire chock or a wood block. It will be easiest to remove the bolts this way. Make sure not to pinch your fingers.


3. In comparison, you can see the spring diameters are different. The 250lb spring coils are also slightly thinner. I assume that I would need to account for the difference by upgrading to the 350lb, or possibly 500lb spring, but figured for now I can just up the preload in the meantime while I wait for the spring to get here. In this picture, you can see the difference in the spring lengths. The stock spring has 10 coil wraps, and the FastAce has 9. The stock shock has quite a bit of preload in it already. you would need a spring compressor to remove it. The stock shock does not look serviceable from what I can tell. It's also non-adjustable. The fastace has adjustable rebound and preload, however no compression. There is also a boss at the top for what looks to be an extension for a remote bladder reservoir. The fastace shock has a lot more potential travel than the shock if needed. If not, we can easily swap over the stock bumpstop.


4. The stock shock is around 257mm eye to eye, the fastace is 260mm. At the same spring rates this would result in a TINY bit of increased elevation difference unweighted.


5. Here it is installed. The install was literally bolt on. 30 minutes tops. When I first installed i added about 3mm of preload. The spring was a little soft for me (I weigh 206lbs) so I upped the preload to about half it's total thread length. This brought the spring to about the stock firmness. This ended up being decent for riding, however there was NO static sag, indicating that I should probably order a bigger spring. I like a little bit of static sag so if you hit a bump and the shock decompresses the tire will still be in full contact with the ground. The nice thing is the preload collars are easily accessible with the shock installed.


6. From underneath the bike, the rebound adjuster is fully accessible as well. Here is where I would suggest shaving down the metal yoke below the adjuster towards the rear of the bike. This would prevent the adjuster from being hit under MASSIVE bumps. When i went for a test ride i hit every bump I could find to see if the shock would blow. It actually impressed me. I think when I hit a pothole the adjuster touched the yoke slightly. I haven't shaved it yet, but may.


7. I took the bike on Multiple rides... I did a few stints around the block and pulled up to a mirror to bounce the bike to balance and set the rebound. I ended up adjusting the preload to about 2/3 of the thread (a lot). I actually took it out to bike night yesterday and led a ride all around downtown, a few 63mph stints along route 50, and all through the back roads. I played with the rebound and preload at all the stop. I ended up around 3 clicks from full slow and it is better!


8. My first impressions are very good. Having adjustable suspension is really a plus and in my opinion has been the only thing missing from this bike. This has just been a trial and I plan to possibly order a larger spring... The greatest thing I learned from this is that we actually CAN fit a monoshock with a reservoir under there. I measured and my plan is to fit a monoshock with compression, preload, AND rebound adjustment. I have one on order now and will post up my additional findings... VERY EXCITING. If anyone has any questions let me know.



9. Along with purchasing a different spring... Just for teasers... here is what is on order as well. This is actually a rendition of the BFA57RC and is supposedly 270mm from eye to eye. It looks like it was produced by accident or as a prototype because the normal BFA57RC has only one eylet at the top of the shock. It was also mislabeled in the ad. Apparently it is height adjustable too... I want to see how much 10mm in shock length will raise the bike, as 260mm didn't really raise the bike. There must be a 1:1 or close to it ratio for shock compression vs height in the linkage. This shock also has a progressive 550-620 spring which could be overkill, but may work well. I couldn't get specs on coil diameter but it definitely looks closer if not bigger than the stock spring. I HATE progressive springs on bikes because it's almost impossible to figure out the damping It's either you dampen for the soft stuff and then bounce like a pogo stick on the harsh bumps, or you overdampen for the soft stuff and the soft stuff is harsh. I will likely just use a 350lb or 500lb straight rate spring. That means less preload, better static sag, and a little firmer than stock, but we'll see. Once I get my hands on it we'll find out. The nice thing is that the reservoir with the compression dial is at a 45 degree angle from straight back, which should miss the front of the storage area (i.e. no modification to our bikes). Also notice that the rebound adjustment a twist type on this shock, therefore there will be no clearance issues or modification to bottom yoke where it has potential to hit the the dial like on the first shock. I will report back what it does to the stock height. If my assumptions are correct, approximately 8mm to 18mm depending on preload.


10. If this works out this will literally open the gates wide open for our scooters. Fully adjustable suspension is a function you don't always get on even full size bikes. You will be able to customize your ride based on your weight and riding style. Once I figure out what combination works best for the rear, I will start to venture into what we can do for the forks from an aftermarket perspective. For those that are interested here is the latest brochure from the Fastace developements. If you check in there there are a few pictures of racing scooters in action overseas.
http://e.issuu.com/embed.html#15542363/11370728

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babblefish
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PostPosted: Fri Sep 04, 2015 2:05 am    Post subject: Reply with quote

Great info, thanks! If you don't mind me asking, where did you get your shocks and what are the prices?

Personally, rebound dampening is more important to me than compression dampening, so if that's the only adjustment (other than preload, of course), that would be fine. Let us know how it goes.

Unfortunately, most of the mindset in the US concerning scooters is for "vintage" type scooters and not performance or sport scooters as it is in Europe and Asia. That's why scooters like the Blur (G-Max), Italjets, Peugeot Speedfight, etc. are either not sold here or not very popular. My local Genuine dealer sells a lot of Buddys, but only a handful of Blurs since they came out. He stopped carrying the Blur because of this and will only special order it if prepaid. I've lived in Asia before and got spoiled by all the great sport scooters they have only to be highly disappointed when I came back to the states looking for a scooter to buy. It came down to either a Blur or Italjet Dragster180, but the Italjet was getting hard to find and I was concerned about parts availabilty, so Blur it was(is).

Btw: great pictures, but can you make them a bit bigger please. Kind of hard to see any detail with the small pics.
Nvm: I just realized that I can tap on the pictures to get a bigger size Embarassed

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PostPosted: Fri Sep 04, 2015 10:03 am    Post subject: Reply with quote

I just found the Fastace shocks on eBay. The BDA01AR looks like the perfect shock for my needs and the price is right too. As far as the dampening adjustment knob getting in the way of the suspension strut, it looks like the knob is removable which means it would be a simple matter of taking if off and trimming it down on my lathe. I think I'll be ordering one of these soon. Thanks for the heads-up on these.

The 35AR looks good too, but $1100 for a shock is just too much of a shock to my wallet, lol.

Btw: did you happen to look at DNM shocks too? They have a 280mm shock with remote resevoir. They also have one with the resevoir attached, but at a very steep angle. They're significantly more expensive than the Fastace however.

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Meeners
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2006 Blur 150, 2007 LF150T-9a, 2006 KTM 950SM, 2003 KTM 450 EXC/SM

PostPosted: Fri Sep 04, 2015 1:06 pm    Post subject: Reply with quote

babblefish wrote:
Great info, thanks! If you don't mind me asking, where did you get your shocks and what are the prices?

You can purchase them from T-bolt USA, Ebay, Amazon as well. I got the BDA01 for $106 shipped. I can't stress enough that the 250lb spring is softer than the stock unless you add TONS of preload. I bought this shock to test really. I could send it your way if you'd like to see what it's like before you buy? I really think 350lb or greater is needed so you can utilize the damping properties through the travel. I might call Fastace/Tbolt today to see what they offer.

babblefish wrote:
Personally, rebound dampening is more important to me than compression dampening, so if that's the only adjustment (other than preload, of course), that would be fine. Let us know how it goes.

Cool! If that's the case then your options are pretty open. My suggestion would be to try the 350lb spring though. I believe the 250 is too soft. I'd add that getting one with a reservoir might not be terrible. They have them without the compression adjustment, but with a shrader valve to play with firmness. That's just me though.

babblefish wrote:
Unfortunately, most of the mindset in the US concerning scooters is for "vintage" type scooters and not performance or sport scooters as it is in Europe and Asia. That's why scooters like the Blur (G-Max), Italjets, Peugeot Speedfight, etc. are either not sold here or not very popular. My local Genuine dealer sells a lot of Buddys, but only a handful of Blurs since they came out. He stopped carrying the Blur because of this and will only special order it if prepaid. I've lived in Asia before and got spoiled by all the great sport scooters they have only to be highly disappointed when I came back to the states looking for a scooter to buy. It came down to either a Blur or Italjet Dragster180, but the Italjet was getting hard to find and I was concerned about parts availabilty, so Blur it was(is).

It's a shame... It's like that with cars as well. The market is just so wierd in the contiguous states. People are concerned with erroneous matters in my opinion. Ultimately we always get the dumbed down, overly restricted, safest, and frankly boring options. I'll get off my box, I digress.

babblefish wrote:
Btw: great pictures, but can you make them a bit bigger please. Kind of hard to see any detail with the small pics.
Nvm: I just realized that I can tap on the pictures to get a bigger size Embarassed
Smile hehe.
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Meeners
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PostPosted: Fri Sep 04, 2015 1:29 pm    Post subject: Reply with quote

babblefish wrote:
I just found the Fastace shocks on eBay. The BDA01AR looks like the perfect shock for my needs and the price is right too. As far as the dampening adjustment knob getting in the way of the suspension strut, it looks like the knob is removable which means it would be a simple matter of taking if off and trimming it down on my lathe. I think I'll be ordering one of these soon. Thanks for the heads-up on these.

Yes. The knob is removable with a small allen key. Yes, you definitely could. No problem. Before you order, let me fill you in on the BFA57ARC when I get it. Right now, a guy has them mislabeled on ebay. It's a 180 dollar shock, and he has them labeled as a BDA57ARC and not the BFA57ARC. Um... AND IT'S up for $50!!!! So more adjustments for less money... I just have to confirm that it fits first and that the spring will work. I ordered it this week so it should be in soon.

babblefish wrote:
The 35AR looks good too, but $1100 for a shock is just too much of a shock to my wallet, lol.

Yes, $1000 for suspension would be great if I was getting podiums in Europe and I had a sponsor... ha, but for a scooter to zoom to and from work, I'll opt for our less expensive option.

babblefish wrote:
Btw: did you happen to look at DNM shocks too? They have a 280mm shock with remote resevoir. They also have one with the resevoir attached, but at a very steep angle. They're significantly more expensive than the Fastace however.


Yes. I've looked at a few shocks... RFY, DNM, Fastace, Piranha, Ohlins, Marzocchi, etc. From what I can tell, a few years ago DNM, Fastace, and Piranha were all the same copied shock essentially made in the same place. A lot of these oversea companies copy the technology used by the larger and higher quality companies. At some point DNM started using a different rebound adjuster, then they broke off and started doing mountain bike suspension exclusively. Some people have exclaimed that DNM has become a little better quality than the Fastace stuff, but meh. That might be true since quality control isn't always a large emphasis in the China made stuff. Nontheless, I think that the DNM/Fastace stuff is manufactured in Taiwan now. I'm not 100% on that. At the end of the day, it's a $100 shock. I'm just happy the adjustments are actually real lol. Back in the day they used to be fake!

If you were looking for the inexpensive DNM stuff, check here (again, pay attention to the spring rates. The higher spring rate stuff was meant for linkless suspension and might be valved a little different:
http://tboltusa.com/store/pit-bike-chassis-parts-rear-shocks-c-50_22.html

Yes they have some additional options for the DNM stuff. I'll see what 270mm does to the bike elevation wise when the bda57 gets here. I will measure approximately what 280mm would do - I can strap the rear of the bike up to the rafters with a truck strap and simulate the extension with the linkage. 280 may raise it a lot, but well see!

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PostPosted: Fri Sep 04, 2015 6:54 pm    Post subject: Reply with quote

Thanks for all the info, good stuff.
I found a DNM shock online (www.orionpitbikesales.com) that is 260mm, w/o resevoir, and a 350lb spring. At $179, it's twice the price of the Fastace though.
But, I'll wait to see how you make out with the resevoir shock first. Smile

Btw: I just looked at the eBay ad for the BDA57ARC and noticed it spec'd the eye-to-eye distance as 270-360mm. Wouldn't that mean the uncompressed length will be 360mm eye-to-eye? A bit too long for our needs? And, although hard to tell from the pics, this shock doesn't appear to have preload adjustment. I hope I'm wrong...

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PostPosted: Fri Sep 04, 2015 8:05 pm    Post subject: Reply with quote

babblefish wrote:
Thanks for all the info, good stuff.
I found a DNM shock online (www.orionpitbikesales.com) that is 260mm, w/o resevoir, and a 350lb spring. At $179, it's twice the price of the Fastace though.
But, I'll wait to see how you make out with the resevoir shock first. Smile

Btw: I just looked at the eBay ad for the BDA57ARC and noticed it spec'd the eye-to-eye distance as 270-360mm. Wouldn't that mean the uncompressed length will be 360mm eye-to-eye? A bit too long for our needs? And, although hard to tell from the pics, this shock doesn't appear to have preload adjustment. I hope I'm wrong...


No problem. Sharing is caring. haha. $179... hmm. That's actually not too bad for a serviceable shock, but yeah - twice as much. My guess is because it's made in Taiwan and not China.

Wise man! The patience will pay off. If this shock works for the Blur I'm going to buy another as a backup! There are two more as well.

Yes, on the BDA I'm taking a chance since it's so inexpensive. The specs on the shock are so wack - typical crappy vague info from Chinese translation I suppose. Honestly, it could mean what you mention, or it could mean that the shock has height adjustment at the bottom yoke. I've seen that on some of them. I'm hoping it's the latter. If you zoom into the picture you can see the two preload collars. It's pretty hard to see but it's there at the top Smile. Hopefully the chance is worth the effort. That would be the bees knees for Blur owners (or at least the two people that are paying attention to this thread, hehe. Shipping says it will be here by mid next week.

In the mean time check out this read on china shocks. This is what lead me on to copping the RFY's for my girls LF china scoot. You would appreciate the read(s).
http://chrislivengood.net/wp/category/bikes/shocks-bikes/page/2/

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PostPosted: Sat Sep 05, 2015 3:29 am    Post subject: Reply with quote

Thanks for the link, interesting reading.

I checked up on that part that you wanted to use as an adapter and it's called an "Sealing Bush", p/n C5281070000. Scooterloungeonline has it listed for around $9, but you might also need "Connector Assy", p/n C5281080000 to clamp it in place. That sealing bush is a split ring type of affair with some type of graphite sealing ring inside.

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PostPosted: Sat Sep 05, 2015 9:33 pm    Post subject: Reply with quote

babblefish wrote:
Thanks for the link, interesting reading.

I checked up on that part that you wanted to use as an adapter and it's called an "Sealing Bush", p/n C5281070000. Scooterloungeonline has it listed for around $9, but you might also need "Connector Assy", p/n C5281080000 to clamp it in place. That sealing bush is a split ring type of affair with some type of graphite sealing ring inside.


Werd!

Yes, that connector assembly is the exhaust clamp that we all have stock. It wouldn't hurt having another on deck. I will order both this week if they are available. I'm looking for a 108 main jet as well. excited to see what el cheap I exhaust I can fit once that gets in. I'm half tempted to rock a stock ktm 125 pipe.

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PostPosted: Sat Sep 05, 2015 10:50 pm    Post subject: Reply with quote

Word of warning, scooterlounge takes a long time to ship stuff out. I usually have to wait almost a month to get stuff, but I always get what I order, even the smallest, most mundane part. I don't think they actually have everything in stock. Stuff they don't have at hand is probably ordered from Taiwan then shipped out to the customer.

Careful with the main jet as there are two different sizes for "Keihin" carbs. You need to get the small, or 4mm size. If you go on eBay, search "gy6 main jet 4mm", or "keihin main jet 4mm". Or, you can drill your own using numbered drill bits. I attached a chart that I use for picking the drill sizes.

A 108 main jet sounds pretty big for a stock engine. I'm currently running a 106.5 in my 180cc engine and it's just about perfect. I may go up a little more though to see what happens.

Edit: reading back on some of the old Blur posts, some ppl have experimented with MJ up to 110 or so with mixed results. Depends on elevation I suppose. Give it a try, you never know.

Btw: it's not shown on the chart, but a #58 drill bit is .042" which equates to a 106.5 jet size.


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PostPosted: Sun Sep 06, 2015 6:44 am    Post subject: Reply with quote

If you open up your carb, can you let me know what size main jet is in there? Just curious because mine was significantly smaller than spec'd in the service manual. I suspect it is because they purposely leaned it out to meet CA smog laws.

In case you decide to modify your airbox, this is what I did to mine:
- Installed a high flow filter element similar to a K&N
- Removed that rubber hose thing from the cover. I believe it's there to reduce intake noise.
- Removed most of the plastic bulkhead that the rubber hose went through for less restriction.

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PostPosted: Mon Sep 07, 2015 6:10 am    Post subject: Reply with quote

Meeners wrote:
babblefish wrote:
Thanks for the link, interesting reading.

I checked up on that part that you wanted to use as an adapter and it's called an "Sealing Bush", p/n C5281070000. Scooterloungeonline has it listed for around $9, but you might also need "Connector Assy", p/n C5281080000 to clamp it in place. That sealing bush is a split ring type of affair with some type of graphite sealing ring inside.


Werd!

Yes, that connector assembly is the exhaust clamp that we all have stock. It wouldn't hurt having another on deck. I will order both this week if they are available. I'm looking for a 108 main jet as well. excited to see what el cheap I exhaust I can fit once that gets in. I'm half tempted to rock a stock ktm 125 pipe.


Before you order that Sealing Bush, I checked to see what it actually is and it's the graphite seal itself that sits inside the muffler and slides over the exhaust manifold to create the exhaust seal. Obviously, not weldable. The picture shows the end of the muffler where the clamp would go and the sealing bush inside.

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PostPosted: Thu Sep 10, 2015 6:22 pm    Post subject: Reply with quote

This just in... I've found out the longest shock that we all can put on is around 280mm. So the BFA57RC is out. Ultimately, Babble - you could move forward with the BDA1 with the 350 spring...

I was bummed out I couldn't get the BFA to work, but then I found out that my friend had a stock shock for a 2006 Yamaha R6 i.e. fully adjustable and serviceable Smile. It has a preinstalled preload adjuster, a reservoir, rebound, low speed compression AND high speed compression adjustments! The shock measures 291 eye to eye but the lower yoke can be drilled to 275. I am in the process of getting it to fit and let me just say it's a stone cold bitch... Lot's of modification to the shock, a sourced bolt was shaved down, but NONE to the bike or the original parts. I will have it bolted in tonight. The best part was that the shock only cost me $30. I will post pictures as soon as I can.

Ultimately, if you find any sport bike that has a 265 to 283 mm eye to eye length it can work. This specific shock has a yoke that bolts to the outside of the stock part of the linkage. You have to utilize a few washers and ES bushings but it works. I'm pretty excited!

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PostPosted: Thu Sep 10, 2015 7:29 pm    Post subject: Reply with quote

Sounds like a lot of work, but if it works out, then great. Do you know what the lb rating of the spring is?

BTW: I contacted the ebay seller of the BDA01 shock about getting it with a 350lb spring. I don't think English is their primary language as I was told to read the ad because it says what the spring rating is. Pretty useless response, really. I think I'll just buy the DNM shock, even if it's twice the price. At least it has the 350lb spring.

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PostPosted: Thu Sep 10, 2015 8:16 pm    Post subject: Reply with quote

babblefish wrote:
Sounds like a lot of work, but if it works out, then great. Do you know what the lb rating of the spring is?

BTW: I contacted the ebay seller of the BDA01 shock about getting it with a 350lb spring. I don't think English is their primary language as I was told to read the ad because it says what the spring rating is. Pretty useless response, really. I think I'll just buy the DNM shock, even if it's twice the price. At least it has the 350lb spring.


From what I've researched the 2006 R6 has a 550+/- lb/in spring. I'll take some comparisons vs the stock spring. I'm willing to bet the stock spring is preloaded to 350-450 based on the comparison.

I agree, the DNM would be your best bet. Which one are you going to try again?

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PostPosted: Thu Sep 10, 2015 8:55 pm    Post subject: Reply with quote

Www.orionpitbikesales.com
Search for DNM 260mm adjustable pit bike rear shock. $179.

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PostPosted: Thu Sep 10, 2015 9:40 pm    Post subject: Reply with quote

Yes. Honestly, I think that is a better piece than the Fastace. I think that one might be THE one. Let me know what you think about it when it arrives.
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PostPosted: Wed Sep 16, 2015 11:41 pm    Post subject: A few trials and a new discovery Reply with quote

so after a few modifications to the 2006 r6 shock, it's yoke, and grinding aluminum as far as I could muster comfortably, I finally got the shock to fit the bottom bolt connection in the linkage AND slide in underneath the seat area. I even had to get a grade 8 bolt from Yamaha and shave it, and it's nut down to fit but it was working and I was stoked. I raised the bike and the top bolt hole was 5-6mm from going in, but the bottom of the r6 shock assembly rubs up against the bottom triangle linkage piece (F12.2 Part 8 in the Parts Diagram) part No. M2451011600. I had a choice to grind it down, but I don't want to damage the structural integrity of a suspension part under stress. In lieu I will order an extra, grind, and get it welded for strength. So for the time being I put my stock shock back on.



The 350lb spring came in today but since it was an international shipment I have to pick it up at the usps depot. So holding on that too.

I did discover something really cool though... So the rear linkage has three holes at the rear that looks like it was designed to be used for height adjustability. It is shown in the below picture with the large bolt through it. I swapped the bolt to the second hole from the front of the bike and it raises the bike around an inch and a half. Before I had issues with ground clearance and scraping the center stand... Now, I do not. This transfers more weight to the front as well. The bike turns in a lot better and is a little more reactive to input just like when I do this with my big bikes. I imagine if one were to combine doing this, with a shorter shock you could find something in between. Anyway, below are the pics of the area I'm talking about and the new height of my bike next to my girls LF150 we souped up. Bitter sweet moment: today I was riding to work and realized too late that I had a little gear oil spill on my tire. I lopsided the scoot and got some rash in a few places. I need a new brake lever but it crashes well! Lol anyway enjoy. The last pic is the before height at its highest with the BDA shock, which was just a couple mm higher than stock for reference.


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PostPosted: Thu Sep 17, 2015 7:04 pm    Post subject: Reply with quote

Looking good Meeners. Glad you were able to get that shock to fit. Didn't know for sure if those extra holes in the suspension linkage was for height adjustment, but I had my suspicions. No benefit for my short legs though. The previous owner of my scoot had the seat recontoured to lower the seat height and had a gell insert installed. Works for me. Very Happy
I'm still planning on buying that DNM shock as soon as I sell a couple of things on eBay.

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PostPosted: Fri Sep 18, 2015 1:00 pm    Post subject: Reply with quote

babblefish wrote:
Looking good Meeners. Glad you were able to get that shock to fit. Didn't know for sure if those extra holes in the suspension linkage was for height adjustment, but I had my suspicions. No benefit for my short legs though. The previous owner of my scoot had the seat recontoured to lower the seat height and had a gell insert installed. Works for me. Very Happy
I'm still planning on buying that DNM shock as soon as I sell a couple of things on eBay.


I'm unsure if height adjustment was the intention, but Smile it's been working so far lol. My previous owner said he installed the "low" seat... so it make sense why I felt like I could drag my knuckles seated upright.

I realized the shipment I received from China was actually the air filter I ordered a while ago. I wonder if that spring is coming lol.

Cool!!!!

BTW, Thanks again for getting those exhaust measurements. That really helps. Now I have to muster up enough courage to drop a few bones on exhaust, but I should probably find a replacement brake lever first haha.

Also, I've probably got to pull my carb to try and use this air filter so I will check what my main and pilot jet size is for you. I will probably check the girlfriends 150 to see what's in there as well when I get a chance.

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PostPosted: Fri Sep 18, 2015 4:53 pm    Post subject: Reply with quote

Now that you mention it, you do look a little big on your Blur, lol!
That factory lowered seat must be really low. I don't think mine is quite that low. I sat on a BMW F800GS adventure bike once and felt like a hamster sitting on an elephant. My fear of heights kicked in too.

I'm kind of surprised that your brake lever broke off. My Blur has fallen over 3 times on the same side bending the brake lever back, but it's never broken. I just stick a pipe over it and bend it back. More than likely it's been weakened so I'm planning on replacing it before it breaks off while I'm trying to stop! Scooterloungeonline has them listed.

What kind of air filter did you get? If it's a pod filter that replaces the stock filter box, be careful because your mixture will get very lean and the throttle slide may start acting weird.

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PostPosted: Fri Sep 18, 2015 5:48 pm    Post subject: Reply with quote

babblefish wrote:
Now that you mention it, you do look a little big on your Blur, lol!
That factory lowered seat must be really low. I don't think mine is quite that low. I sat on a BMW F800GS adventure bike once and felt like a hamster sitting on an elephant. My fear of heights kicked in too.

I'm kind of surprised that your brake lever broke off. My Blur has fallen over 3 times on the same side bending the brake lever back, but it's never broken. I just stick a pipe over it and bend it back. More than likely it's been weakened so I'm planning on replacing it before it breaks off while I'm trying to stop! Scooterloungeonline has them listed.

What kind of air filter did you get? If it's a pod filter that replaces the stock filter box, be careful because your mixture will get very lean and the throttle slide may start acting weird.


6'0" all legs!

Bike slid around 40 feet, Up some curb and gutter so I think it hit a rock. I hope they have them in stock... if they do I might buy a few. I want to take this thing to G&J Kart track. If anyone wants to know where the bike gets dinged on long low slides let me know Smile haha.

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PostPosted: Fri Oct 30, 2015 2:22 pm    Post subject: Reply with quote

So how is your new suspension working out? Feel any significant improvement in handling? Does the front forks feel really soft and under-dampened now?
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PostPosted: Sat May 28, 2016 7:14 pm    Post subject: Reply with quote

Sorry about not updating... I had been uber busy. Right now suspension is great but forks could use some thicker oil.

So I ended up purchasing a brand new linkage piece from pgo so that I can grind it to work with the yzf r6 Shock I got. Stay tuned.

Today I fixed a brake lever from my crash a while ago... I'm taking the scooter to a track day to be my pit bike. I'm shadowing a guy and helping him with his suspension settings on his fz09. I set up his sag for his weight finally and just set a generic rebound and compression to balance the bike. Tomorrow Going to watch his tire wear and adjust as necessary.

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PostPosted: Sun May 29, 2016 8:25 am    Post subject: Reply with quote

Good to see you back online meeners.
You might want to add preload spacers to your forks along with the heavier oil. Helps a lot to firm things up and improve the handling. Also, the specs say 110cc of fork oil per leg, but I'd use a bit more, like around 120-125cc.

I haven't bought a rear shock for mine yet, though my scoot really needs a better one. I'll get one soon. Trying to decide on a 4V head or a shock. I might also have an EFI conversion kit available to me. Too many toys, not enough money...lol.

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