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Posted for <dskeele@bellsouth.net>:
Dan Schaefer,
I'll take your post as ment for me, and thanks...The 0.032 Al air box is
"designed" around a K&N #3260 Filter and Vans' design.. Firstly, in cold
country induction fires can be a severe problem when over priming.
Secondly, the Lancair supplied air box will burn (tried it).. Got ahold of
Vans' plans, their box is too deep..shallowed if for the 3260 filter, layed it
out in thin carboard( pushed & shoved) as a pattern..If your Carb sits at the
rear of the sump you gotta clear the nose gear eleo with the box.. Had to cut
the lower cowl horizontally and add about 3/4" to clear the metal air box.
Coincidentally, this gives a larger cylinder cooling air exit, which was an
inadvertant plus.. Engine runs cool all year with gear up and hot when gear
down, air flow is the answer for me.. Don Skeele 235 /320 b-1-b
For NA engines, I can't see how ingesting lower cowl free air can result in
higher IAT's than when one pulls the carb heat knob and pulls in air heated
by the exhaust pipes. However, having made my living from an engineering
background, I'm willing to admit that sometimes the old acronym "ASSUME"
(ASS Out of U and ME) always lurks and can jump up and bite one.
I still think your idea is an elegant solution to what has been bugging me
for a long time - mainly, how to get a filter for ground operations into the
very limited space on my early 235. I will use your idea (and the device if
available) when I do the long delayed rebuild of the lnlet scoop (for other
reasons) on my cowl. Also, to be sure I'm not ASSUMING anything, I will
measure the IAT's before and after.
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