- Joined
- Jan 9, 2017
- Messages
- 242
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I have been working on this for a while, now on version three! I have a viable working solution.
I know we can buy Jim's excellent system from the show pony stores and there are those out there with superlight two finger cable clutches (Hulk Hogan and Rambow;0) however my 75 mk3 clutch just felt like you were squeezing a turd through a sieve :shock: even with a new hub good bronze and steel plates, stack height checked, and a new well lubed cable it was hard work and in traffic it got dammed painful , what follows is how I have worked my way through the problem.
Version 1
Version one was a remake of the Christmas cracker quality Hydraulic cable type cylinders sold on ebay for peanuts I bought two from China just for the seals , none of the Chinese units had enough travel to fully disengage the clutch, on my MK3, I needed 18mm of cable travel to get 3.5mm of lift on the spring. I made longer cylinder bodies in stainless steel, messed around with piston sizes, and master cylinders, finally I got the system to work but it was heavier to operate than the original cable system I threw that one into must try harder section and went back to the drawing board (sketch pad)
Version 2
Version two had to fit inside the gearbox outer cover and apply direct pressure on the end of the clutch push rod, I had planned to carry out the lay-shaft roller bearing conversion and replace the bushes in the rest, so decided to combine the two jobs while I was in there. I worked on making a cylinder that would fit inside the covers and not affect the workings of the gearbox ratchet mechanism now it's done and working thought I would share it.
Version 3
Hard anodised and ready for use
All installed and working fine
Still a few things to finalise however It's lighter than the cable mechanism to operate, gear changes are more positive and finding neutral is no longer like searching for a lost tribe in the Amazon rain forest :wink:
I know we can buy Jim's excellent system from the show pony stores and there are those out there with superlight two finger cable clutches (Hulk Hogan and Rambow;0) however my 75 mk3 clutch just felt like you were squeezing a turd through a sieve :shock: even with a new hub good bronze and steel plates, stack height checked, and a new well lubed cable it was hard work and in traffic it got dammed painful , what follows is how I have worked my way through the problem.
Version 1
Version one was a remake of the Christmas cracker quality Hydraulic cable type cylinders sold on ebay for peanuts I bought two from China just for the seals , none of the Chinese units had enough travel to fully disengage the clutch, on my MK3, I needed 18mm of cable travel to get 3.5mm of lift on the spring. I made longer cylinder bodies in stainless steel, messed around with piston sizes, and master cylinders, finally I got the system to work but it was heavier to operate than the original cable system I threw that one into must try harder section and went back to the drawing board (sketch pad)
Version 2
Version two had to fit inside the gearbox outer cover and apply direct pressure on the end of the clutch push rod, I had planned to carry out the lay-shaft roller bearing conversion and replace the bushes in the rest, so decided to combine the two jobs while I was in there. I worked on making a cylinder that would fit inside the covers and not affect the workings of the gearbox ratchet mechanism now it's done and working thought I would share it.
Version 3
Hard anodised and ready for use
All installed and working fine
Still a few things to finalise however It's lighter than the cable mechanism to operate, gear changes are more positive and finding neutral is no longer like searching for a lost tribe in the Amazon rain forest :wink: