[TR] TR3A with J type

[60TR3A]

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/