Re: Speedo-Gear Calculator??

From: Bernd D. Ratsch (bernd@texas.net)
Date: Wed Apr 14 1999 - 18:17:35 EDT


Thank You....

(Trying to find the right gear for the 4.10's and 32's)

----- Original Message -----
From: <Jetmugg@aol.com>
To: <dakota-truck@buffnet.net>
Sent: Wednesday, April 14, 1999 4:30 PM
Subject: Re: DML: Speedo-Gear Calculator??

>
>
> Here's the formula again (from my memory), when I get home I'll check the
> printout to make 100% absolutely sure.:
>
> # of teeth = (265 X Axle Ratio)/ tire diameter.
>
> Example1 # of teeth = (265 x 3.55)/ 28 = 33.6 ==> rounded to
34
> teeth.
>
> Then, the number of teeth becomes the last two numbers in the pinion
gear
> part #.
> Hope this helps.
>
> SteveM.
> P.S. - I have also made a tire size calculating spreadsheet which can
also
> calculate "effective gear ratio". Example - Changing from stock
235/70/15's
> to 245/50/15's is like going from 3.55 gears to approximately 3.90 gears,
> assuming you had 3.55's to start with.
>



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