Re: [AMC-list] gear ratios

["Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>]

Thanks guys,

much appreciated

Armand


----- Original Message ----- 
From: "Ken Ames" <ameskg@xxxxxxxxx>
To: "AMC, Rambler, Nash, Jeep and family" <amc-list@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, June 26, 2012 2:51 PM
Subject: Re: [AMC-list] gear ratios


> The tire should turn about 851 times in a mile, give or take about 4%. 
> Tires of
> the same size from different manufacturers sometimes have different 
> rolling
> diameters.
> I figure 15.4 at 2000 in first and 82.4 and 2000 in 5th.
>
> Ken



Armand

(0.00595) * (RPM * r) / (R1 * R2) = vehicle speed in miles/hour
where:
RPM = engine speed, in revolutions/minute
r = loaded tire radius (wheel center to pavement), in inches
R1 = transmission gear ratio
R2 = rear axle ratio>





> Quoting Armand Eshleman <aje1@xxxxxxxxxxxxxxx>:
>
> > I have a 2.73 ratio in the rear axle, the rear tires are 245/45R-16.
> > The tire is 24.7 inches in diameter
> > The T5 has a 3.35 first gear.
> > Fifth overdrive is .63
> >
> > Can anyone expand on this?
> >
> > What speed will the car be going in first gear at 2000 rpm.
> >
> > What speed will the car be going in fifth gear at 2000 rpm.
> >
> > I know there's a formula for this bt of course my used up brain cells 
> > cannot
> >
> > figure it out.
> >
> >
> > thanks,
> >
> > Armand
> >
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>
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