my clutch has been dragging for some time. The slave cylinder has already been replaced. So i put a seal kit into the master cylinder. There was not much difference. This i gathered meant it was due for a resleeve.
There is a mob in lismore NSW who put a stainless sleeve in for $100 or so. Diameter back to14mm(standard). They did a good job on my last bike.
However I had some time, so taking measurements from the bucket seal and combined with the dimensions needed for an O ring groove, I turned up a piston from aluminum and screwed it to the spring. As the rather blurry pic shows.
All is good. It works. Don't know how long the O ring will last. As long as it lasts till I can arrange on days off to get resleeve done. Easy and cheap enough to replace anyway.
I have a Hercus lathe, such a nice machine to use. Piston was a 20 min job, spent most of the time measuring.
I spent 20 min looking for a parting off tool. gave up and ground a new one in 5 min. How often does that happen.
Bike has done 240 thousand K's. Previous 1100 did the same thing.
Always good when everything works as it should. And being able to do something myself.