Welcome to the Two Wheeled Texans community! 
Feel free to hang out and lurk as long as you like. However, we would like to encourage you to I made a 25mm clutch slave cylinder a while back and bought a 9.5 mm master cylinder to use with it. I hooked everything up, but in testing it found I only had 1mm movement on the slave cylinder piston, so, obvioisly the 25 mm piston slave cylinder was to big.
I had a couple of 20mm hydraulic seals lying around, so next I made a 20mm slave. A thing of beauty: 6061 ally body, stainless piston, hydraulic ram seal, and instead of using a circlip to keep,the seal in place I made cover to keep the seal from popping that also doubles as a dust seal. A beautiful piece of work, even if I do say so myself. But, when I went to hook it up I found the master cylinder had jammed. Managed to get it apart but found the seals had expanded and when I pulled the piston assembly out, one of the seals was damaged. When brake fluid compatible rubber is exposed to petrol, or, petroleum based products, it swells, making the rubber useless. So, obviously the master was meant to use brake fluid, not mineral oil as advertised.
So I looked for a repair kit, only original KTM kits were available for big bucks with no garantee it will fit. So, all in all, a monumental f-up.
So, it's back to a cable clutch and the slave I made is destined for the bin, along with the master.
In fitt'ing the hydraulic slave I had to modify the clutch cover, so now I have to see ifI can repair the clutch cover to fit the original plastic screw actuator.
Modifying bikes ain't eaay!
I had a couple of 20mm hydraulic seals lying around, so next I made a 20mm slave. A thing of beauty: 6061 ally body, stainless piston, hydraulic ram seal, and instead of using a circlip to keep,the seal in place I made cover to keep the seal from popping that also doubles as a dust seal. A beautiful piece of work, even if I do say so myself. But, when I went to hook it up I found the master cylinder had jammed. Managed to get it apart but found the seals had expanded and when I pulled the piston assembly out, one of the seals was damaged. When brake fluid compatible rubber is exposed to petrol, or, petroleum based products, it swells, making the rubber useless. So, obviously the master was meant to use brake fluid, not mineral oil as advertised.
So I looked for a repair kit, only original KTM kits were available for big bucks with no garantee it will fit. So, all in all, a monumental f-up.
So, it's back to a cable clutch and the slave I made is destined for the bin, along with the master.
In fitt'ing the hydraulic slave I had to modify the clutch cover, so now I have to see ifI can repair the clutch cover to fit the original plastic screw actuator.
Modifying bikes ain't eaay!
