I don't have any formal tables, but my speedo didn't work for a long time so I
used the tach as one.? I found out the following (with the overdrive on):
1500 RPM - 33mph
2000 RPM - 44mph
2500 RPM - 55mph
3000 RPM - 66mph
etc.
I found it very accurate.? It now matches my speedo that works and my GPS.? I'm
sure it would vary with different rear ends, tires (mine are 165/15), etc.
Ned Paulsen
1960 BN7
-----Original Message-----
From: Bob Spidell <bspidell@comcast.net>
To: healeylist <healeys@autox.team.net>
Sent: Sun, 18 May 2008 6:35 pm
Subject: [Healeys] Speed Calibration
Now that my speedometer is working correctly again, I need to calibrate
it against RPM. Anyone have the table handy that lists Speed vs. RPM
including gear ratios and tire diameters?
I checked the archives, but no direct hits and I'm too lazy to noodle
about in there for too long. This List spoils ya, I guess ;)
bs
--
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Bob Spidell San Jose, CA bspidell@comcast.net
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