REFLECTOR: Intercooler pictures

[gpoole]

Thanks for sharing the pix of your cooling arrangement Brian... if you'll
pardon me for  posing some dumb observer questions....cause I just don't get
it!

For a moment I thought you had scoops pointing forward...but now I realise
they are more likely outlets facing aft (as outlets obviously should!) - but
if that is the case just how does air go thru your radiator?  I thought
smooth transitions in change of direction were the order of the day and that
from a small scoop opening, one made a large area to slow the air down and
build pressure, so for your design how does relative airflow do a 900 to go
up and then 900 again to exit? I have always considered the  P51 arrangement
as a proven design and it canted that aircrafts' radiator to align it with
the flow of air down its' duct.

Your cooling radiator looks way bigger than any I've examined and I would
have thought it's positioning would necessitate a much larger and
subsequently a much draggier scoop to accommodate it and the space air will
need to flow?

Best as always...

Greg 




-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Brian Michalk
Sent: Friday, 31 August 2007 7:07 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Intercooler pictures

Yes, they are too big for the horsepower.  Also referencing Corky Bell.
However, if I recall correctly, these were the smallest I could find for 
motorcycle ... I seem to recall RGM racing, or RJM racing.  I would have 
done better to go with a single intercooler, but it was a much simpler 
install to go with the split IC.

Scott Derrick wrote:
> Brain,
> 
> Interesting design.  So the cooling air makes an "S" turn as it goes
> through the intercooler?
> 
> How did you calculate the intercooler size?  My intercooler doesn't look 
> anywhere
> near that big, I used Bell's formula from his book "Maximmum Boost".
> His company made my intercooler and I had one of their engineers verify
> my size requirements for 325 HP.   The intercooler that came with my
> engine was about %15  larger than the new I had built but the cooling
> air through that one also had to make an "S" turn like yours to get
> through.  Both were made by Bell.
> 
> Hopefully I haven't undersized it.  I have a temp probe right after the
> intercooler to monitor the boosted air temperature.
> 
> Scott
> 
> 
> 
> 
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