gearing

I am restoring a Honda ST70 - not sure of exact date but somewhere around 1972 I guess - S/N ST70-561867. Looking for advice on how to fix a gear shifting issue. I had it running but it had no power and would not shift into third gear. Have opened the engine up to replace gaskets and rings and...

Hi all I have just gone through my Ct90 and rebuilt the clutch and replaced the drum stopper. Immediately after I removed the left engine cover and replaced front and rear sprockets. I have just gone to start the bike for the first time and it appears to not be engaging the transmission. I...

Tinkering with the idea of changing the front driven sprocket from the stock 14 tooth to a 16 or 17 tooth sprocket in order to nudge the top speed closer to 48-50mph. As is the bike (1980 C70) is stock with 14T front/36T rear sprockets. The bike will get up to about 42-43 indicated as is. I'm...

when running the bike and hitting 3rd gear, it runs good. hitting about 43 mph. if i hit 4th gear on it I feel no difference. i want to be able to hit 55 or 60 mph and mostly all my riding will be street. 8 mile to work and back home. right now its running 29/16 with the 10" wheel. I've been...