more issues.....

[HoughMade]

If holding still at idle caused the keys to shear- the keys must have been made from cream cheese (mmmm cream cheese). The clutch may cause some movement of the gears when there is no resistence (which would lessen over time), but when the back tire is on the ground, I do not think idle speed would cause the bike itself to move- if it is working correctly. I think the problem may have been soft keys combined with revving while holding the bike still.

 

[eltatertoto]

no this all happened cause i made a stupid oversight. when i zip-tied the cable, i did it at too sharp of a bend, and thus cosing the cable to be pulled, and when it 1st did that it actually made a little puff of dirt, cause the tire wanted to go. i know somewhat about these sorts of things, cause my minibike has an auto clutch, and it had a torque converter at one point.

 

[HoughMade]

I know you know about these things- my point was just that the keys sheared because the engine was pushing one way, and the bike was still- like I said, though, those keys seemed extremely weak.

 

[eltatertoto]

yea, now that i think about it, they did..

 

[kerf]

I know we're talking apples and oranges but I can open up my 4 hp CY while holding the bike with no ill effects. The Staton box has keys on all the gears as well at the output shaft. Even with that HP and 18.75 to 1 reduction, nothing breaks. Junk keys?

 

[eltatertoto]

das what im thinkin, kerf

 

[kerf]

Check those keys with a magnet, I've run across some aluminum ones for use on engine flywheels. They're designed to sheer to prevent damage to the aluminum flywheel in case something causes the engine to stop suddenly, e.g. hitting a pipe with a lawn mower.

 

[Scottm]

Check those keys with a magnet, I've run across some aluminum ones for use on engine flywheels. They're designed to sheer to prevent damage to the aluminum flywheel in case something causes the engine to stop suddenly, e.g. hitting a pipe with a lawn mower.

I rented a boat once and they gave me a few keys and a pair of pliers, just incase I hit any rocks, I wouldn't destroy the prop.

Good luck Tater, I hope you get it running soon. When you get frustrated, sit down with some cream cheese and think about the good times to come and how smooth like cream cheese, your ride will be. Can we still call them Happy Times?

 

[HoughMade]

I say again

mmmmm, cream cheese.........

 

[fetor56]

Seems to me like that pin was designed to sheer under abnormal stress but what u did didn't seem "abnormal"....they made to too weak so it sheers too easily.Next time replace it with something(eg,good quality mild steel) that's harder than the original but not as hard as the surrounding steel.
Good luck on your second attempt man,it's all trial & error.