[Healeys] Car Terms (semi-Healey related)

[J. Scott Morris]

Bob:  Here is a table of three ratios with performance description provided.  To your question, a taller rear-end is a higher gear ratio which is a smaller ratio number; i.e. 3.545 is a taller rear-end than a 3.909.
   
  Crown /               Ratio              Performance                       Performance
  Pinion                 _____             Improvement                      Description

41 / 10                  4.100           100.0 %        4.9 %               quick starting

43 / 11                  3.909          -    4.7 %     100.0 %              all around

39 / 11                  3.545          -  13.5 %   -   9.3 %                cruising & good gas mileage.
   
  --Scott Morris; Simcoe, Ontario, Canada; '60 MkI BN7 & '62 MkII BT7

Bob Spidell <bspidell at comcast.net> wrote: << Question for the general car gurus out there: Is a taller rear-end a higher gear ratio, or lower. That is, is a 3.54:1 rear-end "taller" or "shorter" than a 3.9:1?  I've heard both ways, just wondering which is the correct lingo. >>


J. Scott Morris - Keep Smiling, Murphy Lives
       
---------------------------------
Looking for the perfect gift? Give the gift of Flickr!