Well said! Bravo! Encore!
Jetmugg@aol.com wrote:
>
> Somebody said it best - HERE WE GO AGAIN.... The actual gear ratio has
> nothing to do with the size of tires!!!!!!! The actual gear ratio is
> controlled 100% by the gears which are installed in the rearend. There is a
> phenomena, which many have called the "effective" gear ratio, which is
> affected by the tire size. This phenomena can be expressed as an effective
> gear ratio, considering the actual gear ratio and tire size, but it must be
> measured relative to some standard value. (A good standard would be the
> as-delivered condition of the truck.)
>
> I have actually made an Excel spreadsheet to study different options and
> combinations of ACTUAL gear ratios and tire sizes, which will calculate an
> EFFECTIVE gear ratio, as compared to the stock setup on the truck. As a
> learning exercise, I would encourage others to do the same, in order to
> better understand the relationships between tires, gears, and rears.
>
> As a side note, if you are going to do the tire rotation/count the driveshaft
> rotations exercise, it is much more accurate to rotate the tire multiple
> times (10 is a good number), count the driveshaft rotations, and then divide
> by the number of tire rotations. This removes much of the error associated
> with only rotating the tire one time.
>
> Steve Menendez- P.E.
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:15:45 EDT