Stebel Compact Nautilus

The original 2-stroke Genuine scooter and its 4-stroke manual and automatic offspring

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slotrod65
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Stebel Compact Nautilus

Post by slotrod65 »

Weeeellllllll.... after another embarrassing use of my stock horn, I have decided to cough up for a Stebel Compact Nautilus. I am very weary of the near useless "stepped on a strangled duck" sound of the stock horn. After installation of my stainless steel floor rails, I have a few extra and unused holes in the legshield, so I plan on mounting it there. I am not sure yet if I will be splitting the horn, or mounting it whole. I plan on documenting the whole process, so hopefully that will help someone after me.

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Post by viney266 »

If you can make it fit, they are a monster, but so loud.
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slotrod65
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Post by slotrod65 »

I am pretty sure even just the horn section will not fit under the horn cowl, but I have no problem mounting it outside the legshield. Once I get my mitts on it I can better judge how to play the mounting game.
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Post by jimmbomb »

I have seen pictures of people mounting them under the floorboards across from the brake pedal ....
good luck
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Post by PeteH »

Also I think under the left cowl.
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Post by jimmbomb »

PeteH wrote:Also I think under the left cowl.
It could be a challenge,, Pete..as Slotrod runs his spare there taking up up a lot of real estate under there already.
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slotrod65
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Post by slotrod65 »

Actually, I moved the spare to the 3-in-1 rack behind the seat. So there is plenty of room.

I am however toying with mounting on the front of the legshield, or on my Cuppini front crash bars which I have yet to mount...

Also, as I have seen the compressor and the horn portions successfully split, I am not sure exactly where I will mount it... It should be here Wednesday, and I can start playing round.
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Post by slotrod65 »

OK, So I received the Stebel today. The chrome version is the regular horn, with a one piece plastic chromed cover... so no separating. Since I have moved the spare to the rack, I have room under the left cowl. It looks like that will be the place.
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Post by jimmbomb »

Well cool..Slotrod....if you decide to run a wire from the horncast thru the tunnel to the back....please tell us how you do that???
Thanks...
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Post by slotrod65 »

I have been pondering that myself... I may need to buy a fish, but will try with a coat hanger first. Right now I am still working on the bracket for mounting the horn.
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Post by slotrod65 »

I had about 1/2 hour after work today. Just enough time to get an idea for a bracket.

First photo shows the area under the cowl, without the tire. There is lots of room. I did some measuring and found a very nice hole already in the frame, just to the left of the battery.

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Next we have the Stebel floating in place where I will be attempting to attach it. I believe a nice 2-3" piece of angle that is 3/4" x 3/4" should to the trick.

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Finally, here is how it should look after the cowl is back on: The twin horn mouths just peeking out of the cowl.

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Post by ericalm »

I've yet to install mine because I was thinking of putting the smaller Stebel Magnum from my Vespa in the Stella and the Nautilus un the Vespa because it'd be easier.

The left cowl mount looks pretty good, though! Would love to know how you wire it if you put it there.
Eric // LA Scooter Meetup Group // Stella 4T // Vespa LX // Vespa LXS // Honda Helix // some, uh, projects…
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Post by slotrod65 »

I got some time today to work on the horn, and I completed the bracket. I made it from 3/4"x3/4" angle from Home Depot. I chose steel over aluminium as the Stevel has one mounting bolt, and places a good amount of torque on the bracket. I used a 3/8" bolt as it was closest to the existing hole in the frame. The final result is very sturdy. Next, on to the wiring!

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Post by slotrod65 »

I had more time to work on the horn today. First I mounted the relay using an existing hole. I had to remove the battery box to get to the rear of it.

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Then I started the actual wiring. First came the 14 gauge wire from the Stebel to the relay and on to the battery

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I know this was the easy wiring... I did remove the horncast to work out where the wiring harness enters the frame tunnel. The next job will be fishing wire down through. I expect to be doing lots if swearing.

Also, the leads on the Stebel are on the bottom, so I will be searching around for a cap to cover the bottom part of the compressor. It is just shy of 2" in diameter, or 50mm. Times to keep my eyes peeled whenever I am out at various stores, looking for something I can cap it with.
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Post by ericalm »

This is looking great!

I shoved wiring from back to front through the body using a coat hanger. Well, actually I had string attached to the coat hanger, then used that to pull the wiring through. At night!

So, could be done in reverse.

You just going to run new 14ga. from the button through to the new horn or try to use the existing wires?
Eric // LA Scooter Meetup Group // Stella 4T // Vespa LX // Vespa LXS // Honda Helix // some, uh, projects…
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Post by slotrod65 »

The instructions say I can just jump wires from the horn contacts to the relay, so I am going to try that. My idea was similar to yours: Coat hangar with the wires attached with electrical tape, or crimped on the end. How tight did you find the clearance in the tunnel?
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Post by ericalm »

It's not tight, it's just not a straight feed. There are some obstructions up there. I think it'll be easier coming from the front. Aiming for the steering column and getting the wire up there was a pain. Also, for whatever reason, when feeding from back to front, the hole on the right side was easier.
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Post by slotrod65 »

Today I was able to complete the install of the horn. The first thing I did was to grab a coat hanger, and sensing that I would need all of it, I unwound the twisted ends, and straightened them with a set of large linesman pliers. It is a good thing I simply did not clip off the ends, because it turned out that I needed every inch. I removed the horncast and tried feeding from the front end, where the various wiring harness enter the tunnel. I was however, unable to get the wire to come out any of the small holes in the back end. I then swicted to the rear and started by feeding from a frame hole in the rear. It took a few tried and a bit of fiddling, but I was able to work the coat hanger wire up to under the lower steering collar, where I could grab it with needle nosed pliers. Then I directed it above the collar and out into the open. I have marked the ends of the coat hanger with blue masking tape in the below photos:

In the back and...

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Up and out the front.

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As you can see, I only had a few inches to spare on each end.
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Post by slotrod65 »

One the coat hangar was through, it was time to attach the wire. I used some clear packing tape since it was the stickiest tape around my house. To my surprise, both wires stayed attached and came right through:

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Post by slotrod65 »

I guess I should back up a bit. For wiring, I purchased the "deluxe" all included Stebel install kit on Amazon. Of course, I needed to but 10 feet of wire and some additional jumper connectors since I was not removing the stock horn. :P

Here is the wiring diagram I used. I did not follow their written instructions, except what goes to where in the relay.

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Before total dis assembly, I took this pic of the horn to be sure I put the correct wires in the right place when re attaching them.


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Last edited by slotrod65 on Mon Oct 14, 2013 1:45 am, edited 1 time in total.
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Post by slotrod65 »

Here is the jumper connectors I used on the front end to connect the horn, while still keeping the stock horn in place. This parallel wiring setup allows current to flow to both.

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The back end was a simple matter of connectors and zip ties. I love those zip ties! I made sure I did not pull the wires too tight to allow for flex and road motion:


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Next the Stebel went back on:

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Then, I took the scooter out of the shed to test the horn, and it works!!

Man, it is LOUD!
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Post by slotrod65 »

Once I was sure everything worked, I remounted the Stebel using threadlocker, and buttoned her back up. Here are some final views:

From underneath:

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And the side:

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Post by slotrod65 »

Overall, I am very pleased with the horn, and the install went far smoother than I envisioned. I was afraid I would be poking that coat hangar around for an hour...

I did use threadlocker on all bolts and nuts, red permanent for the bracket and the relay mount, and blue removable for the Stebel itself.

I also may add some foam in between the horn and the frame, since I am afraid it will vibrate during riding.

Finally, I am not happy with the connection underneath being so exposed to the elements. The horn is a 2" circle down there, so i am on the lookout for a plastic something I can cut up and use as a cover.

As soon as I can I will take her out somewhere I can blast it and make a video.
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Post by berleyprt »

Thanks for sharing. This is very helpful. I was looking at the screaming banshee horn system to put on my Stella.
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Plastic something

Post by mer10 »

Would your old or a new stock spar tire cover work for a temp solution?
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Post by jimmbomb »

Very nice write up! Thanks for this..
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Post by slotrod65 »

And.... We have video!

http://www.youtube.com/watch?v=3WhFSgC- ... e=youtu.be

Today was the first ride with the Stebel, and i had to use it. An old lady started to pull out in front of me from a Dr Office parking lot...
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Post by jimmbomb »

Very nice camera work!! How did you get such steady pans and zooms?? I like the work!!!
Whats your secret?
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Post by jimmbomb »

Very nice camera work!! How did you get such steady pans and zooms?? I like the work!!!
Whats your secret?
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Post by slotrod65 »

Thanks. The video was taken using my iPhone 5c. Zooms are all me moving the camera about. I did use Youtube's stabilize function after upload and that steadied the still parts.
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Post by jimmbomb »

Very nice....hey slotrod....what was that square thing that was on the side of your glove box. The horn sounds great.
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Post by slotrod65 »

That's the NY state motor vehicle inspection sticker. Ugly, but it has to be there.
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Post by KABarash »

slotrod65 wrote:That's the NY state motor vehicle inspection sticker. Ugly, but it has to be there.
At least here in Pennsylvania they place those in some more unobtrusive spot either on the fork or in case of mine on the fender where its not there like a sore thumb.

Love the Stebel horn, the Buddys came with it, really lets people know you're there.
Great job with your instal....
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Post by slotrod65 »

I should have more say where it goes next spring. This one was put on by the dealer before I took delivery. As the dealer is 2 hours away, I will be getting my inspection from a local MC shop, and I will ask them to place it somewhere else. Not sure where yet.
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Post by stASH »

My shop placed the inspection sticker on the back left of the front fender, facing the leg shield. I believe that meets Virginia's requirements and is reasonably inconspicuous.
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Post by slotrod65 »

I like that!!
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Post by slotrod65 »

OK, so as I said, I was not happy with the open wiring down the bottom of the horn.

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I searched hardware stores, crafts shops, all sorts of places, and all sorts of caps, to no avail. Then I was down in my own basement, and spotted it: The cap from Testor's model paint. A quick and dirty measurement showed the interior to be two inches, so I dismounted the horn and tried it out:

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It almost fit... so I carefully removed the few small bits of plastic from the inside of the cap that held in on the paint can, and: Wow! It fit... the soft plastic cap actually stretched just enough to completely cover the bottom of the horn.

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It was now time to head out to the shed...
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Post by slotrod65 »

I drilled two holes in the cap, and threaded the wire through. It was a very tight fit, which will help keep the weather out:

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I re-attached some connectors and worked the cap on, slowly pulling the wires as I went.

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Post by slotrod65 »

Then it was as simple as remounting the horn, and putting the side panels and bars back on:

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Here is an under view: This should keep the mud and water out of the horn connections:

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Last edited by slotrod65 on Thu Oct 24, 2013 4:05 pm, edited 2 times in total.
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Post by PeteH »

MacGyver Award!
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Horn cowl removal?

Post by junebugphoto »

So I've been inspired to add this horn to my Stella. Thanks for the awesome instructions and photos. Wondering how to go about removing that from plastic horn cowl. Is it as simple as the 2 bolts in the glovebox or does the chrome trim and heAdbadge need to be removed. The manuals and photos I've found don't provide much in the lines of info. Thanks in advance for any help.
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Re: Horn cowl removal?

Post by phunksoulbrotha »

junebugphoto wrote:Is it as simple as the 2 bolts in the glovebox or does the chrome trim and heAdbadge need to be removed.
3rd bolt is behind the hexagonal Genuine emblem on the front. Beginning of this thread topic15977.html details the removal.
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broke the Emblem...

Post by junebugphoto »

I was as careful as I could be.. Even bought a small screwdriver for the job and still ended up snapping the tab off...

So where do you get new Emblems?
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Re: broke the Emblem...

Post by Stilts »

junebugphoto wrote:I was as careful as I could be.. Even bought a small screwdriver for the job and still ended up snapping the tab off...

So where do you get new Emblems?
Don't feel bad, they snap for jsut about everyone.

Sadly, can't seem to find a replacement. Both of my Stellas go without.
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Post by RoaringTodd »

C-­3727202

Genuine"G: Badge for Horn Cover

http://www.scooterloungeonline.com/genuinestickers

OR Have you tried contacting your dealer and see if he has any or knows where to get them?
Just because I am Deaf ... does not mean I can't roar.
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a little dab of silicone

Post by junebugphoto »

went to the hardware store in search of stuff to stick it back on with that would not be permanent in case I needed to access that screw again and honestly a little dab of regular old silicone sealant seems to do the trick.
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snaking the wire through on a 2T

Post by junebugphoto »

So I spent the better part of an afternoon unsuccessfully attempting to snake a feed wire through the front to the back... Has anyone done this on a 2t?

I feel like I am missing something.

Any advice would be appreciated. Thanks!
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Post by phunksoulbrotha »

If you re-read the thread you'll see that Slotrod tried that as well and didn't have much luck. Easier if you come at it from back to front. The post is towards the top and has photos.
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