hydraulic clutch conversion thread

[Vagrant]

I haven't stumbled out to look yet but as I recall the screw and lock nut at transmission is almost all the way in. I did 160 miles yesterday and the pull is wonderful! With the slave rod threads flush with the back of the lock nut it isn't fully releasing and neutral is impossible to find but no slipping. I turned the nut 1/44 turn in and it's slightly better I will try 1/4 more next time. It impossible to tell if there is any freeplay in the clutch arm though.

[jhem68]

I would recommend being certain that the slave is set up in a manner that assures you are using the full extension of the rod,

I would remove the nut and barrel then remove the slave from the mount. Making sure you have room in the master cylinder for fluid expansion, put the barrel and nut on the slave shaft and pull on the barrel until you have the full extension of the slave cylinder rod. If the rod was not in the full extension setting when you installed it then it is almost certain to push fluid back into the master cylinder. Without touching the clutch lever reinstall the slave cylinder and then adjust the arm at the transmission as close to zero clearance as you can with the barrel in this fully extended position, I believe this will give the best range of engagement that you can achieve with this combination of master cylinder/slave.
I believe I have 13/64" or about 3/16" total movement of the piston in the slave measured with a 6" metal scale in the slave open end.
As an aside I have since tried a 14mm Nissin axial master cylinder on the T and now have 3/8" total piston travel but I am not happy with the extra effort at the clutch lever and will probably try another approach this summer.

[Vagrant]

I did that when I installed it and saw the shaft wasn't long enough. Wasn't smart enough to cover the full MC. Big explosion! The joys of learning!  Last night I went to look up underneath to see if I could tell if there was free play. I saw the return spring hanging out at a 45-degree angle. How it didn't fall out on that 160-mile ride I don't know. I pulled the nut, flat washer, and barrel off and reinserted it. When I went to put it back together I realized if I left the flat washer off and put the lock nut on backward it would seat deeper into the radius in the barrel so I did it that way.  It now completely releases the clutch plate and looks to work properly. test ride in 1 hour.


I have only 1/4" travel in the rod. I have set it to let me find neutral at a light. I hope it is fully engaged while running but I have doubts. 

[Vagrant]

Final comment, I realised there was a bit of freeplay at the hand lever like the normal freeplay on a V7. I turned the screw in 1/2 turn on the MC and that gave it just a tiny bit more travel and I am now very pleased with the setup. $ well spent for an old cripple.

[TOMB]

I put a aftermarket BMW kit on my daughters  R60/6 about 20 years ago.

Worked great. I think the kit was made by Brown ?

No hydraulic anything. Was i block and tackle setup made the effort 1/2 of what it was.

Maybe someone here can add additional info.

TOMB

[lucky phil]

Why would an hydraulic conversion in itself make a heavy clutch action lighter? Its a simple mechanical ration whichever way you look at it. Less friction than a cable system?
There's nothing intrinsically wrong with a cable system esp with modern lined cables its just a matter of ratios. Can you not simple lengthen the actuating arm to reduce the the effort at the bar and still maintain adequate throw of course?
Of course there is also the possibility of fitting a universally available quick shifter which you use on the up shifts which reduces by around 50% the need to actuate the clutch. Believe me it makes a difference on the wrist only using the clutch half the time when riding. Even on the non QS bikes I only use the clutch on my bikes for moving off and the upshifts from first to second and the down shifts unless I'm bumbling around town or in traffic. 

Ciao 

[Vagrant]

Well hydraulics and electrics are a mystery to me. In other words I don't know or care! I just know I can ride the EV again painlessly.