Sprockets - Worn?

[rw7810]

How do you know if your cam, intermediate and idler spockets need to be replaced?? Are these normally replaced on a rebuild??

[Groesbeck Hurricane]

Bob,

They are fairly cheap insurance to protect your rebuild. I replaced mine in the '83 with ~100K on the dial. They were slightly worn when compared to the new ones but looked nice. It is a good compliment to a new chain.

How is the motor coming?

[RoninLB]

This is a copy and paste. HawgRyder says,

" OK....to check a chain and sprockets.... Put the old chain on a sprocket and wrap it all the way around.... Hold the chain together in one hand at one side of the sprocket....try to "lift" the chain off the sprocket at the oposite side. This checks the amount of "stretch" in the chain and the amount of wear on the sprocket.
When you substitute a new chain for the old...and do the same test...you will notice that the new chain slides back and forth a bit....this is what kills the new chain. Doing this test will show you that in order to function properly...the chain must be as tight as possible on the sprocket.....the more movement it has....the faster it will wear."

[Doug Zielke]

Of course, chains don't really "stretch".
It's the internal link bushings that wear, adding length (slack) to the chain.

[HawgRyder]

Ronin....could not have said it better myself!
Bob

[RoninLB]

Originally posted by HawgRyder
Ronin....could not have said it better myself!
Bob

yeah.. I'm smarter than I look.....Ron

[Wayne 962]

Incorrect - of course chains stretch! Here's the definition of "stretch":

1. To lengthen, widen, or distend.

That's exactly what the chains do.

-Wayne

[Doug Zielke]

You can put your "dictionary" away, Wayne.
You know what I meant.