Thank you all for the replies. The comet has a brand new Honda Clutch. Currently has ATF up to the bottom of the primary chain as recommended by Conways.
Misc: Everything Else Comet: primary chain oil leaking out mainshaft hole behind clutch
- Thread starter Bradley Burt
- Start date
On Dave's Clutch I had to shim the springs on account of the clutch slipping due to the increase in torque from the bigger engine (my racer is worse as the engine is bigger again) so a slippery oil will only make that issue a bigger one. Sometimes you have to go with what works.........You modify one thing and something else down the chain gives trouble.......Nothing new there.
I use coarse 30 oil, Standard clutch, You know I am a Standard man 
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When I was racing my Comet , I used a Load of Commando sintered bronze plates,
I hand cut them to Burman splines, They did gum up after a bit and I had to wash them off,
But my poor old hands can't use a heavy clutch now, So for the road, Am back to standard plates.
One time Dave Jones and me entered road and race class each !! On my Comet,
for a 1/4 mile sprint at Santa Pod, She had a hard day that day !.
I hand cut them to Burman splines, They did gum up after a bit and I had to wash them off,
But my poor old hands can't use a heavy clutch now, So for the road, Am back to standard plates.
One time Dave Jones and me entered road and race class each !! On my Comet,
for a 1/4 mile sprint at Santa Pod, She had a hard day that day !.
For What It's Worth
I got that, but he wrote F WIT?
In my experience with the Comet clutch using ATF in the chaincase works initially but after a while it leads to sticking plates. Now like Martyn I use Motul TransOil, which seems to be satisfactory.
Leaving the Comet parked on the left side propstand for any length of time is likely to cause engine oil to seep into the chaincase.
Hugo
Unless the bearing design is different for the road version, which i seriously doubt there is........I would not be inclined to use a Newby clutch on a road bike......... I don't feel the hub bearing is able to last long in service.
Sealing a gearbox input shaft when you got a primary chain to tension you obviously cannot have a typical shaft seal as it will never be concentric to the shaft. So you could do an easy mod and have a v-ring, no metal in it, on the gearbox shaft or chain sprocket , axially sealing on a stainless plate or on the alu inner cover, no problem. The lip is very soft and mounted in the oil side , effect is like a slinger seal. So then you can have some range for tensioning the chain as long as the lip stays on the ss plate. My photos show same place on a prewar Horex primary - and a Kawa clutch on it, with a v-ring sealing on a ss plate.
Vic
V-ring
Vic
V-ring