Primary reduction and clutch question

[MotorBikeFab]

I "think" the shiny bar keeps the jackshaft assembly from rotating because it mechanically connects the jackshaft mounting plate with the engine mounting plate.

 

[willis617]

This is what l've been working on, have yet to sort out how i will achor it, probably a plate on the chain side that i can also use for a chain tensioner and mounting a gaurd. i will be making a 100mm rotor for a jack shaft brake next. I visited your website, i am intrigued with your 212 build as i too have a bixby waiting to buid.

 

[willis617]

Pics

 

[willis617]

Made some progress today on a jack shaft disc brake rotor, ended up at 103mm in diameter, made from heat treated stainless steel

 

[willis617]

I've read several references to a jack shaft disc brake needing to be "detuned", anyone know what that means?

 

[curtisfox]

103 may be to big, going through gears smaller is better. It tales a lot less force through the gears, with reduction then as if were direct to the wheel............Curt

 

[willis617]

I could take down to 90mm and make it work, to make it any smaller I would have to make the rotor and hub one piece

 

[curtisfox]

cut it down to 90, give it a go, to much you can change later..............Curt