[Supras] Clutch cooling?

[Walker, Brian (Rich. Dist)]

I'm not saying I have a issue to resolve just thinking it might help the
clutch have more capacity. I see what you're saying Geoff, when you're
in the meat of the powerband that additional cooling might be negible
since it's not directed to friction surface but it would be additional
airflow just the same. We were thinking this because the FW (Al.) heated
so quickly sitting on a kerosene heater for ~30 sec. that maybe it could
be an improvement.

Agreed, shifting and applying throttle as smoothly as possible will help
reduce heat. of course that goes two ways, when letting off to shift and
applying throttle after shifting. The latter I'm pretty smooth about,
the first is tricky if you're shifting in the power band and I know I
need to work on it even if it feels smooth.

-----Original Message-----
From: Jeff Mohler [mailto:speedtoys.racing at gmail.com] 
Sent: Monday, February 11, 2008 12:51 PM
To: Walker, Brian (Rich. Dist)
Cc: Supras at supras.com
Subject: Re: [Supras] Clutch cooling?

I see the idea, but the cooling effect isnt going to reach the friction
surfaces directly...they would be cooled from the flywheel/PP being
cooled from surfaces far from the friction area.

Its just like brake pads..the temperature/friction capabilities of the
friction material AS its being used/engaged will not be affected by any
cooling in real time when you really need it the most if youre at the
edge.

Could you help this out by not applying power until the clutch is fully
engaged instead of asking for MORE slip to become forward moving
power?   The heat comes from slip, prevent it as best you can.



On Mon, Feb 11, 2008 at 8:34 AM, Walker, Brian (Rich. Dist)
<Brian.Walker2 at vdot.virginia.gov> wrote:
> I don't know how much some of you have thought about clutch cooling 
> but  it seems that if the assembly were better vented it might help to

> combat  slipping under high load/heat conditions. We were thinking of 
> modifying  the front plate with a screen (to prevent debris from 
> entering the bell  housing but allow air to flow in) Also were 
> thinking of doing the same  to the inspection plates since the air 
> passages here are very small. Has  anyone done this or foresee
problems? Thoughts?
>
>  Brian W-88T
>
>
>
>
>
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