[TR] high engine rpm

[Joe Curry]

Mark,
In your example, you would not be able to keep 0ne wheel stationary because
a locked (welded) diff would force both wheels to move together.

I tried several different methods a few years ago to see what really worked
and the steps that I presented was the only method that yielded the proper
results.  

Basically, keeping one wheel stationary theoretically makes the free wheel
spin according to the differential ratio.  (Or that is certainly the way my
60 year old brain remembers it).

Joe C.

-----Original Message-----
From: triumphs-bounces+spitlist=cox.net at autox.team.net
[mailto:triumphs-bounces+spitlist=cox.net at autox.team.net] On Behalf Of Mark
J. Bradakis
Sent: Saturday, July 21, 2007 11:14 AM
To: Triumph Sports car discussion
Subject: Re: [TR] high engine rpm

>Yes, Please explain.  The ratio is what it is and therefore I don't
>understand what you mean by "off by a factor of 2".
>
>  
>
If you had a welded diff where the axles on each side were NOT free
to move indepentently then you'd be fine with the simple test.  But
since you hold one wheel steady and turn the other, you are making the
"differential" part of the diff work, and you'd see that the carrier with
the ring gear would move only half as much as the wheel.  It is
pretty easy to visualize oif you take the back cover off and watch ;-)

mjb.
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