Primary Chaincase oil volume

[A10Boy]

Unless I am very much mistaken - which to be honest is very likely.

22 tooth @ 1/2 pitch = 11 inches. 5000rpm/60 = 83.33333333333 revs/second. 83.33333333333 X 11 = 916f/s.

My original calc wrongly used a guessed at 5/8 pitch but its more or less the same.  

[beezalex]

Unless I am very much mistaken - which to be honest is very likely.

22 tooth @ 1/2 pitch = 11 inches. 5000rpm/60 = 83.33333333333 revs/second. 83.33333333333 X 11 = 916f/s.

My original calc wrongly used a guessed at 5/8 pitch but its more or less the same.  

...which is periolusly close to the speed of sound.

Divide by 12 to get ft/s from inches/s.

*again, sorry to go all super-dork on y'all...but I've been grading papers for the last three days*

Cheers!

[trevinoz]

Bob,
             ATF = Automatic Transmission Fluid

   Trev.

[A10Boy]

Of course I forgot that bit. 916/12 = 76 Ft/s. Its still fast and will cook itself in a few minutes.

When I used ATF I found the clutch worked really well, but ATF will leak a lot. When I fitted an SRM clutch pressure plate and springs I went back to 20 grade oil and no leaks. Although the clutch centre with the wrong direction spiral didnt help!

[bikerbob]

Hi there thanks for that info have never thought of using ATF before have always used 20sae fork oil did once use 50sae engine oil but had problems with clutch plates sticking together so reverted back to fork oil  been using that for at least 14 years without any problems.

[iansoady]

Always used ATF in the Commando which had sintered bronze plates, but as I had some 15 grade fork oil lying about I thought I'd try that in the A10 and it seems fine (so far). The only worry I have is that after I'd put it in I noticed that it said "low friction" on the bottle. I know that using car oil with friction modifiers in modern bikes can cause clutch slip so I hope there's nothing like that in there.