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How to Check Vibration Damper?
Vibration Dampener
- schrader7032
- Posts: 9056
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
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How to Check Vibration Damper?
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
How to Check Vibration Damper?
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- Posts: 503
- Joined: Fri Oct 27, 2006 3:00 am
How to Check Vibration Damper?
There shouldn't be. It needs to be tight or the rubber will get torn up quickly.
Don't trust the old rubber. Get a couple of new rubbers from Bench Mark Works and carry one as a spare. I put one of their rubbers in back in 2001 and after 10,000 miles it is still good and tight. Someone else has almost 20,000 miles.
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- Posts: 503
- Joined: Fri Oct 27, 2006 3:00 am
How to Check Vibration Damper?
I don't understand where you would stack washers. You could use the damper bolt and hub without the damper parts, or you could use an R60/2 generator bolt. But I would use the whole damper.
How to Check Vibration Damper?
I replaced the rubber damper part in mine about 1000 miles ago, which is not quite 2 years...got it from Vech. The original one that was on the bike had turned to a gooey mess. There was evidence inside the front cover of circular black rings as the steel disk was spinning the goo off. I have less than 100 miles on my engine rebuild and notice that black rings are
beginning to show up again inside the front cover. I had cleaned
everything spotless as part of the rebuild.
I managed to find this again (I forgot where it was):
http://www.beemergarage.com/documents/228.pdf
It says that it should rotate on the hub. If it moves easily or if it moves laterally, the damper is not working right. The times I've tried to check mine, I can't move it at all. The bolt that ties everything together onto the generator rotor is typically put on fairly tight. I'm fairly sure that I have all the right pieces.
Mine does not move at all. Does that mean that the clamp up is too
tight and squeezing everything together too much? Any idea why the vibration rubber is giving up the ghost so quickly? How do I determine if mine is still working or not?
Kurt in S.A.