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Re: Engagement of O/D

To: mgs@Autox.Team.Net
Subject: Re: Engagement of O/D
From: Mark Moburg <markmoburg@mindspring.com>
Date: Tue, 22 Apr 1997 02:40:06 -0400 (EDT)
At 05:42 PM 4/21/97 -0500, you wrote:
>
>>
>>Do you guys with 'ordinary' automatics try to guess when it is about to 
>>change gear and back off till it has?  Or just leave the foot where it 
>>is and let the gearbox get on with it?  Isn't the MG O/D constructed to 
>>the same principle?
>>
>>PaulH.
>>(Still trying to catch up)
>
>Yes Paul, exactly the same principle and operation.  I thought the same
>thing when reading the posts, but apparently that fact was overlooked.  I
>was afraid of being flamed for stating the obvious, but since you said it
>first, I will stand behind you (hopefully you will block enough of the
>flames from reaching me)   : )
>
>Chad 
>'72 B Daily Driver w/O/D and w/o a bit of concern about engaging or
>disengaging....
>
 . . . except that an automatic has a fluid coupling (torque converter)
which absorbs some of the shock from trying to force the engine to slow down
to match the higher gear ratio.  Your O/D only has those diddly little
friction plates on the planetary carrier.  Guess what wears out after too
many full-throttle engagements? (The main clutch -- under your left foot --
won't slip enough to take up the difference).  So, on moderate acceleration,
I'd let the 'box get on with it.  Under hard acceleration, back off when
engaging for longer O/D life.  My .02

Mark Moburg
markmoburg@mindspring.com


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