Date: Fri, 24 Nov 2006 07:43:54 EST
From: [EMAIL PROTECTED]
Subject: Re: Final drive ratio
(if a posi/limited slip rear)count how many times the yoke for the
driveshaft on the rear turns for one full 360degree turn of the
wheel/brakedrum/rotor(not sure what is on the rear). You can do this by
yourself if the rear is off the ground a little.
================
correct, one turn of each drive wheel = 2 full wheel turns = one full turn
of the ring gear.
If the rear is "not" a posi/limited slip rear, you will
need someone to go on the drivers side of the rear and turn the wheel to
keep
up with the side you are turning.
================
That is one way to attain 2 full wheel turns, but it involves a lot of
"babysitting" or careful attenton to exact behavior that is simply not
necessary. Like I said, the carrier does not care if you provide it 1 turn
of each of 2 wheels, or 2 turns of 1 wheel or 0.5 of one and 1.5 of the
other, as long as they ADD UP TO 2 full wheel turns.
With the open diff, it is _far easier_ to keep one wheel stationary, no
babysitting needed there, and just get your 2 turns off the one elevated
wheel. If you ever see a cutaway differential in action, you will instanly
grasp why this is so, as the spider gears walk around each other, turning
the carrier at 1/2 the speed of the one rotating axle [while one axle is
held still of course]. At least, that did it for me.
If you just turn the one side of the rear without someone turning the
other wheel to keep up ...you will not get an accurate reading at all.
=================
Not true.
you just need to ensure that you get TWO FULL DRIVE WHEEL TURNS
one on each side = two [the posi method, or a PITA for open diffs]
Two on one side = two [the easy non-posi method]
0.1 on one side and 1.9 on other side = 2 but what a PITA.
Its sounds more confusing than it is.....
Harry Mager
===============
agreed
I tried to generalize the text to apply to 4WD and FWD vehicles, too
"final drive ratio" applies to Toro's as well as RWD cars. "rear end ratio"
does not.
WANTED:
1968-9 2 groove Water Pump PULLEY "KA-401462" stamp . NOT the common PS Pump
Pulley. Must have 4 bolt holes + center hole for water pump use.
-----------------------
Chris Witt
*the* Rocket Scientist
1303 W. Miller Rd.
Lansing MI 48911
[EMAIL PROTECTED]
Cell 517-449-0432 weekends or short weekday calls or leave message.
Home 517-882-9747 thru 10-11pm MI time most days
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