Seems to me that a change in rear end gear ratios would also be a ratio.
For example, going from 2.88 to 3.07 would give a ratio of 1.066. Taking this
times the RPM at a speed using 2.88 gears and multiplying by 1.066 gives
the RPM with the new gears at the given speed.
My Tiger runs 2400 RPM at 60 MPH with 2.88 gears. With 3.07 gears the RPM
would be approximately 2558 RPM. This assumes everything else stays the
same.
Fred Baum
In a message dated 8/7/2013 9:58:23 A.M. Eastern Daylight Time,
awtiger@cox.net writes:
A big "thank you" to all of you who responded to my gearing question!!!
The calculators and spreadsheets that several of you turned me on to are of
great assistance.
So, the general concensus I'm getting from you guys appears to be that the
close-ratio tranny is more of a culprit in contributing to slower off
-the-line response than is the rear end ratio. Going to the wide-ratio gears
does sound like the answer I'm looking for as it yields the best of
everything without cutting up the car; quicker response off the line and
easier on
the clutch while still maintaining the highway rear gear advantages of less
noise, less wear and tear on the engine and reasonable gas mileage. This
may be the route that I should take as I'm going to have to have my trans
gone through anyway when I replace the clutch in the car this winter. This
would be a great opportunity to make the suggested ratio changes.
Having said that, it appears that most of you who have made this change
have done so by just changing the gears in your close-ratio boxes. So, to
Gary and others who have done this, where should I be looking for the parts I
would need to make the recommended gear ratio changes?
Thanks again for the suggestions and assistance,
Andy Walker
Edmond, OK
B382001600LRXFE
TAC #740
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