<VV> Semi OT- basic math

[ScottyGrover at aol.com]

If you have a 3.55:1 rear axle ratio, it's simple---60 MPH=3000RPM; for  
other ratios, compute the ratio of your rear axle to 3.55.
 
Scotty from Hollyweird
 
 
In a message dated 8/27/2010 12:14:17 P.M. Pacific Daylight Time,  
jwilson at unctv.org writes:


Okay, so here's a weird little question... I *think* I
know  the answer to this, but everyone please double-
check, cause some days I  just can't do math....

Assuming I know my rear-tires  revolutions-per-mile
number, can't I guesstimate my RPM's at 60 MPH  by
just doing revs-per-mile times transaxle gear ratio?

Because at  60 I'm doing a-mile-a-minute, so my tires are
turning-over the  revs-per-mile # in a minute... equals
revs per minute of the TIRES. Times  tranaxle ratio=
rev's per minute of the ENGINE... right?

Or am I  missing something?

CJ  Wilson