Maximum Buddy 125 Engine RPM/ Redline/ Tachometer use

rick71454 · Post by **rick71454** » Mon Apr 08, 2013 7:35 pm

Hello BuddyLand:

Anyone know the engine RPMs of a stock Buddy 125 at full throttle?

Rick7a454

az_slynch · Post by **az_slynch** » Wed Apr 10, 2013 6:01 am

I'd hazard a guess that a stock bike turns makes max horsepower at 7-7.5K RPM, redlines around 8K, but could rev as high as 8-9K at wide open throttle. I know the Elite 80s made power to 8K, which seemed high as the small end of the connecting rod had a bushing. Buddies have a roller bearing, so I'd suspect they can rev on a bit more.

You could nab one of these little guys as an add on accessory. I had one for tuning moped clutches and it worked pretty well if your plug wasn't too "noisy". It's even available in orange.

EDIT: Found a spec page for the PGO BuBu 125. This should give you a better idea of the numbers you're looking for.

rick71454 · Post by **rick71454** » Tue Apr 16, 2013 8:18 pm

Hello BuddyLand:

Thanks for your response az_slynch. The information you provided me supports what I found about my own Buddy 125 when I used my own guage.

Instead of hooking up my scooter at some shop with more expensive tools and equipment, I bought the Trail Tech TTO Tach Hour Meter Digital Gauge for Motorcycles & ATVs. It cost me $37.99 and you can see it on the Internet.

My engine up on the stand reached up to 9000 RPM. Me at 180LBS, riding on level road, I got up to 7600 RPM.

It is a fun little gadget to have on your scooter dash.

I noticed that the RPMs is proportionate to the MPH, and when you figure it the ratio on your own scooter between them, you can look at the tachometer and use it to know your MPH. If your top RPMs begin to decline enough, or it fluctuates around too much at full throttle, then a visit to the scooter mechanic may be the thing to do.

Get one of these tachometers......

Rick71454

Rusty Shackleford · Post by **Rusty Shackleford** » Wed Apr 17, 2013 9:07 pm

Nice to see you're hitting so close to peak horsepower. Very cool info on the tach.

That's the one I was looking at. What variator weights are you using?

Tocsik · Post by **Tocsik** » Wed Apr 17, 2013 9:37 pm

It would be interesting to see your results with the Bando CDI and coil and no other changes.

rick71454 · Post by **rick71454** » Wed Apr 17, 2013 11:01 pm

Hello BuddyLand:

To answer Rusty Schackleford.........
I am using three Prima roller weights 13 & three of the 14 grams.
I had bought the Prima set of roller weights from 6 to 17 Grams.

With the CVT cover off.....I watch it work......

What I learned was that on my Buddy 125, the six stock 11 gram roller weights did push the variator all the way out at full throttle. I was sure of this when my combination of 13 & 14 gram weights did not puch the variator any further out than the six 11 gram ones did. What it did do was push my variator out quicker, such that the RPMS were lower at mid range speed.

I am considering using six Dr. Pulley sliders size 20X12 MM. I am guessing that the extra 2 millimeters diameter will push the driving belt out closer ot the driver pulley outer edge without complications. I am hoping top speed will really increase a few MPH.

Rick71454