by fozzza » Sat Mar 12, 2016 2:08 pm
I had a similar problem with my 1275 many moons ago, the one I built my Midas out of infact. I thought it was to do with the actuation of the clutch, I tried everything with the hydraulics and even simulated a traffic jam with my old man in the car and checked the clutch lever operation, it was still good. This made me point to the clutch itself. I changed the complete clutch, it was then fine. I later found out from an old mate who raced minis that I had probably got a warped clutch plate that was made worse by heat and maybe caused by uneven spring pressure from the diaphragm.
This worked for me but I hope you find that it is something simpler causing the problem, Obviously exhaust every other avenue before you go for a clutch strip down.
Good luck Geoff I hope its an easy fix.
Roy