Jogos6910 wrote:
> a question for those in the know.
> my friends buying, so order up.
>
> he picked up a new derby cover gasket for his '98 heritage ST classic.
> the o-rings got bumps on opposing sides.
> are those bumps used to center the gasket in the slot?
> if not, why are they there? i can't see how they'd help sealing anything.
>
> the reason for the question is, he put in the new style after servicing his
> primary, and it weeped oil. he put in the old style, smooth regular o-ring, and
> no more weeping.
>
The new nubbly style rings only work when the derby is perfectly flat.
If it's warped like 90% of them out there, it's can't seal.
The theory is that the smooth one exerts too much force on the cover and warps it.
So, getting the smooth ring is a temporary fix, IMO, a permanent fix is a new flat
cover
and the nubbly ring, and never go back to the smooth one, and the derby cover will
last eternally.
HogDr
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