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Old Yesterday, 11:49 PM   #1
Voltaire OP
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Joined: Jun 2011
Location: Auckland,New Zealand
Oddometer: 1,408
Riveting Stuff

My R90 lost drive at the last race meeting.
Initially I thought it must be the clutch, then after removing the drive boot suspected it might be the taper shaft coming loose.

Makes me wonder about 44 year old rivets.

My engineer mate looked at them and said you could see how some broke and the others have started to oval the alloy hub.
Interesting, so next time you have your wheel off have a look at them.
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Old Today, 12:29 AM   #2
Bill Harris
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Yes, my R60/5 wenr "No Va" last October. First thought was that driveshaft bolts broke or the driveshaft flange taper twisted loose, but it was the spline cup rivets that expired.

http://www.advrider.com/forums/showt...=spline&page=2

And I pride(d) myself on being smooth and easy with the clutch and shifts. And the ODO just ticked over 200067 miles.

Oh well.

I ended up replaced the wheel with a good used wheel. I _may_ be able to repair the spline cup using 1/4" AN-grade aircraft bolts. But with many of the holes gone oval, that may not be a permanent repair.

--Bill
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Old Today, 12:43 AM   #3
Voltaire OP
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Yeah Bill, I'm easy on the clutch too, change gear mostly before the limiter kicks in at 8000.
Couple of years back it was the Clutch assembly that the rivets gave way on, lots of sparks out of the timing hole
Are there any more rivets left to watch out for?
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Old Today, 01:39 AM   #4
disston
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Here is mine removed from service last year after two rivets let loose. This was a brand new spline cup 12 years ago. The sloppy rivet installation was done by yours truly.



Sorry about the fuzzy picture. I think it does illustrate tho that this is a /6 wheel. The one in your hand looks like a /5 wheel, Voltaire?
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Old Today, 02:20 AM   #5
Voltaire OP
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Yes , its got 1971 stamped on it.
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Old Today, 03:02 AM   #6
boxerboy81
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On a previous bike I had the spline cup replaced and used unbrako bolts instead of rivets. http://unbrako.com/
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