Borrow a good GPS from a friend - go for a ride - take some readings - very
accurate...
-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
On Behalf Of krazgeo@comcast.net
Sent: Saturday, October 07, 2006 1:57 AM
To: Adam Phillips
Cc: TechSHO; shotimes@autox.team.net; SHOTimes
Subject: Re: [Shotimes] Speedo/odometer problem
-------------- Original message ----------------------
From: "Adam Phillips" <adambant@hotmail.com>
> So since i dont have a speedo, can anyone give me a rough RPM to MPH
> correlation? 35mph, 50 mph, and 80mph would be about all i really need.
> Thanks!
In 5th gear, 70 mph is 2800 RPM plus or minus a few. As a rough average,
2000 RPM in each gear is ten times the gear....so 2000 RPM is 20 mph in 2nd,
30 mph in 3rd, 40 mph in 4th, and 50 mph in 5th.
35 mph in 5th is about 1900 RPM....that is approaching lugging the
engine...I'd be in 4th or third at that speed. 60 in 5th is 2400, and 80 is
3200. There's about 400 RPM per 10 mph in 5th gear...you can do your own
computing for +/- 5 mph speeds.
You might have someone go out and pace you to make sure of these
speeds....Lowrider's tach read a bit high, but I am trying to compensate for
that with these estimates. A ticket might be the result if you don't make
sure.
George
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