BBK brands  By  uncleozzy (Read 6,061 times)

I've been in pain so long I think that I like it now. I just rebuilt my motor with a 50mm piston 23mm intake valve and 20mm exhaust valve. I put 6g rollers in my cvt and still can't get over 45mph and a 20mm high perf cvk carb # jet. Whats up with this I should be able to do 55mph you think?

I put the 2. final gear in already. It didn't seem to do anything. I don't know what else to do except loose 50lbs lol.....

49 - 17t are my final gear ratio. I put my stock carb back on with a # jet its sputtering and chocking with a . And my 20mm carb is not making any difference either I had a # in it and dropped down to a # the 20mm carb seems to be no different than the stock carb. I can't figure this out. My scoot should be doing at least 55mph.

I don’t think it’s realistic to hit 55mph with the 49/17 gears, but maybe close to 50. If you have a headwind forget about it. I honestly think if it’s a really strong headwind you may actually be slightly faster with stock gearing, or close to a tie, unless you can power through it.

Is top speed the most important thing to you right now? Is it worth sacrificing acceleration for top speed at this point? That’s up to you to figure out what’s best for your riding situation. Let’s say you could hit 55mph, how long will you actually maintain that speed and how long will it take to you get to that speed?

If you ride on straightaways a lot then maybe increased max speed will pay off in the long run. If you don’t, then Little Johnny’s scoot down the road that can do only 45mph (but is quicker) will probably beat you from point A to point B.

I haven’t messed with any other gears but the 49/17. There’s no way I’d go with taller gears with the 72cc I had, cuz there was no way I’d probably ever hit that top speed on my daily route for it to be worth it.

Just decide what’s best for you or what your goal is.

Yup dito on what both of the above say, just not enough snots to pull a taller gear..

The ones I wanted (and actually ordered) were the 50/16T gears. That’s what was listed on Scrappy’s site at the time, but they stopped getting them in and sent me the 49/17 gears instead without telling me. I decided to try them out anyway instead of sending them back.