why do people dispense with the glands? is it a performance issue for people wanting to reduce friction? or to increase the oil flow.. I mean the glands seem to be one of the more enduring design successes of the bottom end of most Scotts! They will pick up if you run them dry of course.. but working as they do as an oil drenched disc valve they obviate all other neccessity for delicate (and possibly blockable) non return valves etc in the oil supply..The mains are hardly a problem point are they ? The only cup problems ive seen have been to do with lack of oil or just plain rust .. Am i missing something?
No..really.. clutch contamination… i am surprised? I mean ive not spent much time riding standard scotts but it would surprise me if oil on the primary chain would have a great tendency to contaminate the clutch..Surely clutch contamination would be through the gearbox output shaft wearing the bush in the high gear,through lack of alignment of the outrigger, and then oil coming past the felt seal into the clutch?
Oil from the primary chain will surely tend to be flung out(unless the Scott clutch has its own gravitational force!) . My fathers racer even has a dripper to feed oil to the primary chain! and no clutch slipping on his standard scott clutch until the late eighties when he had to change his exhaust to pass noise regs and unexpectedly boosted power ..
He does however control the outrigger from sliding back under power with a snail cam arrangement so the bush is probably in good condition ..
I am with shakespeare at the moment.
A little oil on the primary cant do any harm..
Is this then the main reason that people fit seals?