10-05-2010, 12:09 PM
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CC Member
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Join Date: Aug 2006
Location: San Diego,
CA
Cobra Make, Engine: SPF1715, Roush Built 434 ci Stroker, Dart Block, Ported AFR 205 Heads... 561 hp / 547 tq, Former Roush Show Car, Completed and Prepped By Olthoff Racing.
Posts: 1,066
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Quote:
Originally Posted by jcraigau
I find they also take a couple of seconds to show changes in speed.
When braking or accelerating I could notice the difference.
Very accurate when doing a constant speed.
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This is all true. I have had GPS speedos in my boats for years. They are very accurate, but they do have some lag. When doing top speed runs in my boat, I have to hold the speed for a couple seconds if I want the real number. I have wondered for a while now why they are not more popular in autos. You can change tire size, gear ratios etc... the speedo does not have to re-calibrated. |
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