This is Dean's previous email on the subject. ...bill in oregon
===========================================================================
On Behalf Of Dean Hedin
Sent: Thursday, August 14, 2008 6:09 PM
To: kk7ss@verizon.net; spridgets
Subject: Re: [Spridgets] Speed vs RPM question...
Go to:
http://bgsoflex.com/auto.html
Then scroll down on the left to rpm range program...
Here is a sample output. The key item is to go measure you tire diameter.
Differential Gear = 4.22 to 1
Transmission Gear = 1.00 to 1
Tire Diameter (Inches) = 22.76
Tire Growth Factor = 0.000100 (Inches/(MPH*MPH))
Computation Results:
Vehicle Computed Tire Xmisssion
MPH RPM Growth(In) Eff (%)
--------------------------------------------------
30.0 1862 0.09 100.0
35.0 2170 0.12 100.0
40.0 2476 0.16 100.0
45.0 2780 0.20 100.0
50.0 3082 0.25 100.0
55.0 3383 0.30 100.0
60.0 3681 0.36 100.0
65.0 3977 0.42 100.0
70.0 4271 0.49 100.0
75.0 4562 0.56 100.0
80.0 4850 0.64 100.0
85.0 5135 0.72 100.0
90.0 5416 0.81 100.0
95.0 5695 0.90 100.0
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-----Original Message-----
From: spridgets-bounces@autox.team.net
[mailto:spridgets-bounces@autox.team.net] On Behalf Of Matt Hagopian
Sent: Friday, October 17, 2008 11:24 PM
To: Spridget List
Subject: [Spridgets] calculating speed
Hi, I was just wondering if someone could help me out with the speed I was
going... I have a stock 4spd tranny, 4.55 rear end, 7000rpm, and tires are
65" in circumference.
Thank you guys! I just installed a new rear axle because it was broken, and
I switched diffs to a 4.22 and when i removed the 4.55 a handfull of teeth
came out with it.
--
Sincerely,
Matt Hagopian
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