[rickbert]

Just a wondering.....



The little washer shaped gaskets that go around the screws that hold the exhaust shields in place on each side of the bike:



The only purpose I can see that they serve would be to prevent rattle.



My question is does anyone know if they are available at an auto parts store ? They are $2.20 EACH online which seems unreasonable.



Or are they 100% necessary ?



It is #3 on this here parts fishy thing :



http://www.bikebandit.com/houseofmotorcycles/honda-motorcycle-cx500c-1982/o/m9599#sch411081

 

[InWeldingWeTrust]

They are there I think to prevent rattle in a compomnent that is subject to expansion/contraction, but you could just as soon use a belleville or thackeray washer in its place

 

[marshallf3]

Exactly, and I need to add those to mine. They're fiber washers and serve a dual purpose.



1) They serve as sort of a lockwasher by taking up the small amount of expansion and contraction the H-Box goes through as it heats and cools.



2) They provide a small amount of cushioning to help keep the H-box resonances from the heat shields.



Any Ace/True Value etc hardware store will have fiber washers, just take a screw with you and match it up.

 

[magilla]

I'm thinking that they're there to reduce heat transfer ie as an insulator, as well as to reduce rattle from expanding and contracting due to heat.



I've been useing red fibre washers and haven't had any problems yet.

 

[DavidfromWisconsin]

They are special washers with an insulation built into them. They definitely are there to prevent heat transfer. That shield will get pretty hot without them.

 

[Cruiser]

Unless what you try to match up fits perfectly on the bike, just spend the whole under $10 and

you will never have to worry about that part of the bike again. Strange little rattles and

vibrations that come with a 30 year old bike are bad enough, no sense encouraging more of them...

 

[rickbert]

Yeah probably a good point....I don't usually try to skimp, normally I put in new parts/bolts etc even when I don't really need to (Roger w/vouch for that LOL)



Actually there are 8 of these little/felt/insulated washers needed.... 2 for each screw.

 

[magilla]

I think you'll find that they are made from some sort of heat insulating material, maybe even asbestos, and not felt