Bike is 1959 Model 50.
I have replaced the kick start oil seal twice now. The seal works for a few months and then it begins weeping again. Any ideas on how i can reolve this in a more permanent way ?
You may be able to machine the seal location for one of the supposedly better “x” section o rings -also polish the shaft in the area of seal contact . A lot of work/ expense so it may be easiest to do what I do - LWI . Live with it - wipe it off and monitor the oil levelin the gearbox frequently.
There is another solution, you can buy one of the later Mk3 Commando ones, that have better oil seals are part of the outer cover.
I fill my horizontal box until oil begins to flow out of the level plug hole. The box has no O-ring or lip seals, and weeps oil from every shaft. I don't worry about it. If I pull the level plug out, it still passes oil. The quantity of oil weeping from the box is insufficient to be concerned about. It prevents corrosion of the castings.....
I machined my cover out for a MK3 commando one and then put an X seal behind it ( belt and braces).
Great idea Christopher, can i be cheeky and ask you for the seal type and sizes ?
Use an old 'o' ring off the bottom of your pushrod tubes. It's a really tight squeeze and it'll be stiff as hell for a while but once worn in it'll be fine and should last for ages. I've used this dodge on both my ES2 & Dommi for years now and neither leak from the kickstart.
I stuck an x-ring in. Put silicone sealant into the groove behind it as the groove is quite deep. Works pretty well. I bought a pair from one of the three big Norton suppliers but haven't needed the other. Must be cheaper in bulk...but I don't want such bulk! They do one for the gear lever also.