Some (well, at least one ;) speedometer shops have a dyno for
calibrating speedos.
Palo Alto Speedometer calibrated mine, and installed a new set
of gears in the speedo when I got put a 3.54 diff set in my BJ8.
bs
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Bob Spidell San Jose, CA bspidell@comcast.net
'67 Austin-Healey 3000 '56 Austin-Healey 100M
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Subject: Re: Cruising just fine
> In a message dated 9/16/05 8:31:25 P.M. Pacific Daylight Time,
> GSFuqua1@aol.com writes:
>
>>Another idea for the hopper is to find someone who has a Speedo Gun. NO
> NOT
>>THE POLICE!! Ha ha Many schools now have them for baseball, etc. There
> may
>>also be a local speed strip that would have one. If you could find one
> then
>>you could make several passes at different speeds as Mike suggested and
> know
>>exactly what you are doing speed wise.
>
>
>
>
>
> Another way is to get an inexpensive GPS unit, one for camping/hunting is
> sufficient. It will give you very accurate speed measurements (in a
>straight
> line, they get thrown off when you go around a corner). Then you could do
> your own testing. Pick an indicated speed and see what it actually is. Go
> through the range and track the actual versus indicated. Works for me, and
>then
> you can give Mo Ma good data. Of course, if they can only do it by cable
> revs, that could be a problem. Is it possible you missed two or three in
>your
> measurements?
> Dave Duffey
> 59 BT 7 project
> Paradise, CA
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