I bought My engine kit from a site called pistonbikes.com. It is a 66cc grubee skyhawk GT-5. The kit came with a 410 bike chain. My second trip I ran into problems with the chain jumping the drive sprocket and mangling the chain and damaging inside of the clutch arm cover. I cleaned up the damage to the cover with a buffing pad, Fixed & lubed the chain, going link by link to be sure they were bending w/o seizing, and adjusted my sprocket alignment with some washers at the back wheel. Everything seemed fine for the next two trips, but on my third trip since the fix, the chain jumped the drive sprocket again, this time breaking the cover off of the engine and taking the outer bolt hole off with it.
The guy at piston bikes is refusing to send me the parts to fix this persuant to their "30 day parts" warranty based on "user error". In other words , I fuxed it up. He said that this was caused by bad sprocket alignment. He recommended that I buy a whole new engine(from him of course) and keep this one for parts. This is not an alignment issue.
It's a Brand New Engine! It engine barely has 10 Miles on it. I have built 2 kits before, and both came with 415 bike chains. I have NEVER had a problem with the chain jumping the Drive Sprocket. I bought the Grubee because I read that they were considered the best quality(as far as that goes.)
Has anyone out there had similar issues with 410 bike chains, and/or skyhawk kits? Do skyhawk kits come with a 410 chain standard, or did these guys sell me sub-standard parts? Any advice would be greatly appreciated.
Attatched are some pictures if my engine and alignment that I also sent to robert@pistonbikes.com
The guy at piston bikes is refusing to send me the parts to fix this persuant to their "30 day parts" warranty based on "user error". In other words , I fuxed it up. He said that this was caused by bad sprocket alignment. He recommended that I buy a whole new engine(from him of course) and keep this one for parts. This is not an alignment issue.
It's a Brand New Engine! It engine barely has 10 Miles on it. I have built 2 kits before, and both came with 415 bike chains. I have NEVER had a problem with the chain jumping the Drive Sprocket. I bought the Grubee because I read that they were considered the best quality(as far as that goes.)
Has anyone out there had similar issues with 410 bike chains, and/or skyhawk kits? Do skyhawk kits come with a 410 chain standard, or did these guys sell me sub-standard parts? Any advice would be greatly appreciated.
Attatched are some pictures if my engine and alignment that I also sent to robert@pistonbikes.com
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