Re: rpms vs. mph

[AlpineDriver@aol.com]

If Scott is reading 5000 rpm on his tach at 60 mph I think the tach is wrong. 
 

A 3.89  diffenential ratio could account for about 10% reduction in rpm 
compared to a 4.22 (roughly) so that would make his rpm 4500 which is still 
too high.    Small tires could affect it some but not very much.    

My tach read about 5000 at 60 and I had it fixed and I suspect Scott's is 
also way off.

Rob Carpenter