Marauder-chain jumping off

Joined
Mar 7, 2017
Messages
9
Location
vancouver
I notice the marauder frame flexes a lot with heavy cranking, like when going uphill. Has anyone else noticed this ?
 
Joined
Mar 7, 2017
Messages
9
Location
vancouver
I've never driven a chain drive motorbike, so not sure what you mean.
For sure the bike lifts up a little. But the frame is flexing sideways too.
Is that the cause of the chain slipping off? Does the frame
needs some lateral reinforcement, and where would that go
 
Joined
Mar 7, 2017
Messages
9
Location
vancouver
Can you post a few pics?
I have never heard of that happening, and I own legs that can really cranks hard!
What wall thickness is your tubing?

Brad
Thanks, just needed some assurance that shouldn't happen! I followed the plan (1.5" x 0.06" steel tube). But I think it maybe the frame itself or the crank mount (got a local welder shop to do that part for me) has a slight misalignment in it somewhere. Plan is to bolt a preload bar to the side of the frame to give it a permanent flex of a few degrees to offset the cranking flex)......fingers crossed.
 
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