David
My first 1960 TR3A that I bought in college never had a working
speedometer (1965 - 1967). But based on having other folks follow me
& I noting their speed when I raised my hand - I determined that in
4th doubling your RPM is very close to you speed: 3000 RPM was
approximately 60 MPH and 3500 RPM was approximately 70 MPH. In
Overdrive, 3000 RPM was approximately 65 and 3500 RPM was
approximately 75 MPH. I think my current 60 TR3A runs a little slower.
I suggest going out on the road with a colleague & establishing your
tach to MPH ratio.
John
John A. Wise
Glendale, AZ
1960 Triumph TR3A
Commission No: TS80422L
http://members.cox.net/60tr3a/
http://www.triumphowners.com/876
1977 Porsche 911S
http://members.cox.net/porsche911s/
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