Clutch 40 tooth W/clamshell

[mrbg]

just finished up installing 40 tooth w clamshell I took for a ride about a mile, ran good with the new pipe and airfilter. When I got close to home I wound it out and I heard a clunk clunk, pulled the clutch in cause I thought I threw the chain. Motor was still running so I killed it. It'll roll about 10' and then lock up got it home pulled sprocket cover no problem there it was getting dark so I didn't have a time to pull clutch cover. A buddy of mine had same problem with a 36 t he said it was a sheared key I think but I can't get ahold of him. Anybody have a similar problem? Suggestions welcome, motor is just broke in

 

[crassius]

could be as simple as too much chain slack - if it is more serious, then opening both covers and rolling bike forward with the spark plug out will show where the problem is

 

[mrbg]

Thanks

 

[mrbg]

Well I removed both covers and the plug I can't see anything visibly wrong. It rolls forward and backward about 10' with the clutch in and out, its gotta be something on the clutch shaft?? What do you think?

 

[mrbg]

It was something simple, the cotter pin on the half link of my chain fell out and the pin was hitting sprocket cover. I'm lucky it didn't fall out

 

[crassius]

yes, I've seen a chain snag rip the back off the motor

 

[mrbg]

Well I like the 40 tooth it works good with the longer header expansion pipe and better air filter I put on. It's all lowend power and the stock 44 T.didn't work. It'll cruise at 25-27mph without straining the motor now.

 

[mrbg]

Anybody have a trick for setting up your chain so you don't have to use the tensioner/roller I got lucky on my other bike I didn't have to mess with the bicycle chain. I put the 40T on another bike and I was trying to set it up with having to resize bicycle chain. I have a chainbreaker and lengths of chain for both sides.Does anyone have a good way of doing it? Or maybe one of the springloaded jobs off the sprocket cover?

 

[crassius]

I don't like spring tensioners - fairly easy to make some spacers to adjust motor position to get chain right

 

[mrbg]

Ya I checked out a couple of posts on the spring tensioner so that's out. The stock setup works good, I just want to run without it. Bike is a strandcruiser so I could set up the chain motor right on, and cut the pedal chain or run the tensioner on that side I guess. Why don't you like coasterbrakes? Mine are setup with a front disc the coaster is more like a emergency brake granted there's more service on them but with clamshell its not bad.