Mayf, First I am not a auto trans expert. I have been to school on them and
building them since 1969. With an automatic trans I can see no real performance
increase in preheating the oil. The oil in a auto trans with a converter will
heat up quickly because of the converter. The trans oil cooler only takes about
10% of the oil from the front pump and uses it for lube oil. I have taken many
transmissions apart. I have never seen one that failed because it got too cold,
but most fail because they got too hot. I run a drive unit not a converter, I
loop the cooler line right back to the trans for lube oil. The only thing the
oil does in my trans is hydraulically hold the clutches and or band tight. I use
the synthetic trans oil so its thin to start with. This is just my opinion and
what I have had success with. Someone has a better idea, I'm open to ideas.
Doug Odom in big ditch
DrMayf wrote:
> Ok, now how did you trace the gain of 1 mph to heating the oil? How about
> the tail wind or frontal wind or side wind. 1 mph is pretty small to balme
> on one particular thing...This is unfortunately the real issue with trying
> to determine data from racing without actual data from all the parameters
> involved. The air density could have been changed a little bit, the baro
> pressure cold have been up, the temps, well, you get the idea...you could
> have had burritos for supper the night before at Senior Jones, lol.. ANd of
> course because a run takes so long to repeat it is hard to get consistent
> run to run data because everything changes. So many things to consider.
> However, glad you went faster no matter the cause! Speed is good...
>
> mayf
> ----- Original Message -----
> From: "Russel Mack" <rtmack@concentric.net>
> To: "Dan" <dwarner@electrorent.com>; "land speed"
> <land-speed@autox.team.net>
> Sent: Tuesday, April 22, 2003 9:00 PM
> Subject: RE: trans heat
>
> > Dan, Mayf:
> > I did Dan's procedure with my bike, before my best run (about 1mph better
> > than any run w/o trans warmup). Of course, it's a lot easier to do that
> in
> > the staging lane with a bike.
> > Russ, #1226B
> >
> > -----Original Message-----
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/// what is needed. It isn't that difficult, folks.
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