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Gordon Gray
Gordon Gray
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nert Offline OP
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First part of the story, I found more power in the 66 after retarding the timing and discovered the clutch slips between shifts and cruising into a head wind at 65/70 mph. I have been putting if off, you know cold in the shed, didn't want to remove the primary cover as the bike has been oil leak free since i built it last year. Weather is looking good and I want to ride my BSA. I bought a gasket with hopes of tightening the clutch screws. One would not tighten. SOOO, I take more apart only to be surprised by this. See photo. [img]https://www.dropbox.com/s/9u79dlrbwc70yc7/IMG_6567.jpg?dl=0[/img] One of the nails is a bit short on thread. The good news is, I found the problem, and the fix is straight forward. Questions, I don't know how old the clutch plates are. They are flat fiber type, no sipes, or grooves. Nothing looks burnt, warped, stained, or pitted. The drive dogs all look nice. Do I reinstall them? Am I missing an opportunity where I will be saying a few miles from here, I should have put new ones in? If so is there some new era clutch plates I should be purchasing? Thank you I dont know why the photo doesnt show.

Last edited by nert; 03/27/21 10:11 pm.

keep your "oddies" lubricated, and carry a dime
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You may get away with replacing the faulty "nail" component and adding a turn or so to the screws.
Bfore you rebuild , make extra sure the plain steel plates are dead flat, reject any that will admit a three thou feeler when laying on a flat surface .
i reccomend glaze busting the plain steel plates with a ten minute pickle in dilute Hydro Chloric acid, sold as Brick Cleaner, degrease plates before pickling then oil to prevent rust after rinsing.,
if that doesnt do it , or the clutch ends up over heavy to operate, there are 7 plate conversions out there that work very well. i have one fitted , it gives a light clutch action with no slip and easy neutral selection.


71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
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Thumbs up on Gavins advice. The 7 plate is the 'modern approach at a reasonable price! PRT Hey, I'm a Jersey guy too.

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+1
Not to forget that properly adjusted, the 7 plate setup gives a sweet clutch lever Pull! Appreciated by some of us older Guys..... ;~)


Down to 1 BSA, 2 Triumphs, 1 '56 Chevy
1 '65 XLCH, Hernia Gift, on the way to Japan!
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nert Offline OP
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The 7 clutch conversion sounds like a good investment. I don't mind fixing something once, very unhappy to do it twice. I will go that way. About how far do you thread the adjusters on the studs? Flush with the bottom of kerf in the adjuster? Flush with the top of the adjuster. 1/8" proud of the adjuster?. thank you


keep your "oddies" lubricated, and carry a dime
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threads flush with the top of the nuts


71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod

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