Re: [ihc] RPM, Gearing formula needed

[Bob Blair <bobblair@xxxxxxxxxxxxx>]

Tue, 9 Sep 2003 10:02:47 "Ed Sohm" <idaemes@domain.elided> wrote:
> Different answers because Tom,  Mark, and Bob all assumed that a tire is
> exactly the size it says it is
I should have specified "actual" tire diameter as measured, which is what I 
meant.
Nominal sizes are often more PR than measurement.  I've seen more than an 
inch of
difference between worn BFGs and new Swampers of the same nominal 
size.  Wear can
be a big factor in tires with deep lugs.

Anyway, using 32.7" in "my" formula yields 2300 RPM, close to Ed's 2317.
Oh, it's not "my" formula, but I don't remember where it came from.  Should 
have
said that too.

Ed put a lot of work into his reply.  So please Paypal his sixpack value to
rwelty@domain.elided to support the digest.  OK Ed?  :)
Bob