[Tigers] Tiger Cooling

[Jay Laifman]

He's also probably the kind of guy who would leave the radiator brass
colored so as to not insulate it with a layer of black paint!

On Wed, Mar 21, 2012 at 9:58 AM, <CoolVT at aol.com> wrote:

> Theo,
> I agree with directing the flow through the radiator and blocking the
> proper areas. I have done everything that you've done in that area.
> In regards to the type/material of the radiator.  I was at a show  recently
> where a radiator supplier (all aluminum models) had about 100 rads on
> display. Most were ready  made for certain cars. I was impressed because
>  the
> prices looked awfully good.  He said they could make up any  configuration
> that someone would want. I asked how much more efficient aluminum  would be
> over brass for the same size. He said about 25%.  I said that I  thought
> the
> brass would be a better conductor or heat and therefore more  efficient.
>  He
> said "no".  He said you put your hand on a brass  radiator after a hard run
> with a car and you'll burn your hand.  Do the  same with an aluminum and it
> will feel cool. This, in his mind, was saying that  since the al. felt
> cooler
> that it was dissipating  heat better than the  brass.  I came to the
> conclusion that he was probably not someone i would  want designing a
> radiator
> for
> a Tiger.
> Mark
>
>
> In a message dated 3/21/2012 12:43:10 P.M. Eastern Daylight Time,
> Theo.Smit at dynastream.com writes:
>
>
> Hi  Mark,
> I  donb t think that there are any quick cooling aids for the Tiger b  all
> of them  require attention to detail to get more than just a marginal
> benefit.
> The  Cressida fan is about 12b  diameter and has an integrated steel
> shroud;
> it just  barely fits below the sheetmetal in the nose. I used foam adhesive
> tape to  seal the gap between the rad matrix and the shroud. The problem
> you always  have with pusher fans is that the motor obscures some of the
> available area; a  second thing is that if the gaps arenb t filled, then
> the
> air
> can just go out  the side rather than through the radiator. The reason why
> I
> used this fan is  that it was evidently designed from the outset as a
> pusher
> application. A lot  of aftermarket fans are designed as a puller, and then
> when theyb re used in a  pusher application they really donb t move
> anywhere
> near the air that theyb re  supposedly rated at.
> The  only thing that would be nice is to have a similar fan, but larger, so
> that it  would move more air over more of the radiator. Youb d end up with
> part of the  fan output deadheading against the lower radiator support
> though.
> Moving  air through half the rad should be more than sufficient, since the
> fan is only  required to boost airflow at low speeds. You just have to make
> sure that the  air youb re moving is really going through the rad rather
> than
> around it, and  that itb s moving with sufficient speed.
> A  secondary issue is that if the fan only covers part of the radiator
> core, are  those core tubes actually flowing enough coolant to do the job?
> Theo
>
>
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