Re: Transmissions P.S.

[Bob Brooks <rbrooks@micrelinc.com>]

Lee:

I suppose this means that you need to warm the fluid in an auto trans to the
recommended 225 degrees, and that you should run a lighter than manufacturer
recommended lube in a manual box.
Good reason to go with the manual box.

Bob


LEE A HART wrote:

> > Why would there be a difference in temperature rise in a manual box, when
> > comparing an EV to an ICE?
>
> The transmission does pick up engine heat, by conduction thru the bell
> housing, from the hot exhaust pipes that run right past it, and because the
> hot air that has passed over the engine and radiator are going right past the
> transmission on their way out.
>
> The other big factor is that an ICE can be driven for hours on end at high
> speeds. The transmission has time to reach its steady-state temperature. An EV
> battery only allows it to be driven for short lengths of time (or at very low
> power levels for longer periods), so the transmission never really has time to
> fully warm up.
>
> Lee Hart                     If you would not be forgotten
> 4209 France Ave. N.          Soon as you are dead and rotten
> Robbinsdale, MN 55422 USA    Either write things worth the reading
> phone (612) 533-3226         Or do things worthy of the writing
> e-mail XURQ03A@prodigy.com   (Ben Franklin, Poor Richard's Almanac)



--
Bob
rbrooks@micrelinc.com

Micrel, Inc.
http://www.micrelinc.com