Re: Mileage 3, or maybe 4

From: andy levy (andy-dml@levyclan.us)
Date: Sat Jul 10 2004 - 23:06:16 EDT


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On 7/10/2004 6:27 PM, mike-lists@tepidcola.com wrote:

| Haven't had a chance to read the list at all since I left town, but
I figured
| I'd let y'all know that I set a new high speed milage record
yesterday... I
| got 18 even on I-71 back and forth between Cleveland and Columbus,
which is
| about 1.5-2 MPG better than I usually get.
|
| No reason that I know of - but I was going far faster than I usually
do: in
| the area of about 80 or so. So I think that's pretty solid proof that I'm
| geared way too short for my tires. If my milage goes *up* when I go
10-15 MPH
| faster than usual, when it should drop due to more wind resistance.... I
| should hit a dyno and see what my tq curve is doing around 2000 RPM -
that's
| 80MPH as geared and tired now. I think my "cruising speed" might be a lot
| higher than I thought =)

I would question the accuracy of your speedometer & odometer (and thus
your mileage calculations). You're right that wind resistance (actually
it's drag) goes up as you go faster - dramatically. There's a
noticeable *decrease* in my mileage when I cruise at 70 MPH instead of
65 (which is why I'm now commuting w/ the Pimpin' Acclaim at 75-80,
instead of the truck at 70).

What's your GPS say your speed is?

- --
- -andy

http://home.rochester.rr.com/alevy/dakota - andy-dml@levyclan.us
- --------------------------------------------
"Whatever Adam does, do the opposite and you'll be fine"
        -Bob Tom
- --------------------------------------------
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