I am in the process of converting a 2001 TT600R (kickstart only) to an electric start - much like Yamaha did for the TT600RE in 2004.

Part of this conversion involved swapping the TTR crankshaft for a 3AJ XT600 one to get the longer crank taper end for the starter gear and associated parts. The engine is now effectively a 3AJ one with a TTR gearbox and primary gearing.

One thing that bothered me was the additional weight being added to the crank with all the extra components for the e-start. I like the throttle response of the original TTR engine, and am concerned that this will be lost by doing this conversion due to the additional rotating mass.

So I started looking into alternative cranks and flywheels that might suit. It appears the 2003 era raptors have a T-bone style crank and smaller flywheel that may fit, and some of the XT660 around that time also did.

Via the forum search, I saw that there were a few posts about people considering crank swaps to use the 660 versions, but no-one seems to have posted about a finished result.

Did anyone actually do this crank swap, and was there a substantial weight loss on the crank?

Thanks,
Peter

I remember posting about the Raptor crank but was assured it would not fit, looks mighty similar.

Thanks for the reply.
I'm keeping my fingers crossed that someone on here has actually tried it, and has either had success, or has a detailed reason why it didn't work.

Search 'raptor' under my posts, xtrider I think it was

Thanks - I missed that one somehow. Sounds like this idea is a 'non-starter' then.