im looking to do a suicide shift on my 2000 vulcan 1500, unfortunately a hydraulic foot clutch is almost a grand. can the rear brake master cylinder be used for the clutch or are the internals different?
it may not have been coolant but condensation in the ac.
On the Yamaha VMAX The rubber cup on the clutch master cylinder is different from the rubber cup on brake master cylinder. There must be a reason for it. I think you should use a clutch master cylinder instead.
It performs the same function. However, some models of master cylinder might be opposite for mounting purposes (i.e., when mounted on right hand side, the mounting boss might be counterbored, leaving an uneven mounting surface if it mounted on the other side of the bike). EDIT: Just looked at my rear master cylinder. It's held on with 2 bolts. One bolt comes through the mount bracket, through the entire master cylinder (from the back side), and the foot peg threads on. HOWEVER, the forward bolt comes through the mount from the back side, and threads into a blind hole in the master cylinder. In order for this to work on the left side of the bike, the blind hole would need to be bored through. HOWEVER, this would put a big hole in the reservoir. So master cylinder selection IS important!
I can't say for sure, but I'm wondering if the volume it displaces isn't enough to operate a clutch. While not the most attractive thing in the world, a frame mounted Bendix type master cylinder like those used on 1930-60's cars would since they were made for drum brakes. I know you can still get them for hot rod cars and the same thing is used for surge brakes on stock trailers.
