Lancair 320 ram air?

"Michael Pilla" wrote in message
...
[...][flush BYB] ===========
Every Mooney I have flown has always gained an inch with filter bypassed.
I
don't have my manuals or logbook handy, but I recall that the POH
indicated
an inch gain. The models were older Mooneys: M20(F?, don't recall) and
M20J.

YMMV.

Michael Pilla

At altitude no big worry about dust and bugs, I wouldn't think. However, in
Missouri where there's lots of particulates and airborne effluvia and
pestilence, I would always filter the air.

"RR Urban" wrote

For the sake of argument, if we assume...
My *RAM AIR* only yields 0.75" HG with NO filter...
it's not difficult to understand why a filter is anathema
to the designed RAM AIR system.


Barnyard BOb --

OTOH, you could take the stance that the ram air is there to negate the
effect of having a filter, if you wanted to view the presence of a filter as
a mandatory option.

OTOH, I could be wrong, or mistaken.

Naah ;-)
--
Jim in NC

"RR Urban" wrote

Ponder this perplexing question, Sir Morgans...

Is the glass half full or half empty?



Barnyard BOb - the half fast curmudgeon

Tis easy! Neither half full or half empty!

Jim ( pessimism are us ) in NC

RR Urban wrote:

Ponder this perplexing question, Sir Morgans...

Is the glass half full or half empty?

It's twice as big as it needs to be.

Dave 'overdesign' Hyde

On Sun, 28 Dec 2003 05:03:54 GMT, Dave Hyde wrote:

:RR Urban wrote:
:
: Ponder this perplexing question, Sir Morgans...
:
: Is the glass half full or half empty?
:
:It's twice as big as it needs to be.
:
ave 'overdesign' Hyde


The other half is stored in a redundant, damage resistant container in
a secure location.

On cars,,,of which I had some experience in the decade of the 80's
many cars had very poor positive crankcase ventilation filters.
To my simple mind it always seemed more important to filter the air
going into the crankcase where dust must be removed by the oil filter
as compared to the intake air which spends a VERY short time in the
combustion chamber.
As for me and my airplane we filter the carb heated air and taxi on a
dusty strip with the carb heat ON thus making sure the carb is always
nice and warm and then shortly after applying full throttle on take
off I close the carb heat and I KNOW it will not ice up for a least a
few minutes until I am safely in the air.
Now of course this is all contrary to what I was taught by the flying
club,,,but what do I know.

Ray Toews

On Fri, 26 Dec 2003 22:50:47 -0500, "Morgans"
wrote:


"RR Urban" wrote

Ponder this perplexing question, Sir Morgans...

Is the glass half full or half empty?



Barnyard BOb - the half fast curmudgeon

Tis easy! Neither half full or half empty!

Jim ( pessimism are us ) in NC

From: richard riley

On Sun, 28 Dec 2003 05:03:54 GMT, Dave Hyde wrote:

:RR Urban wrote:
:
: Ponder this perplexing question, Sir Morgans...
:
: Is the glass half full or half empty?
:
:It's twice as big as it needs to be.
:
ave 'overdesign' Hyde


The other half is stored in a redundant, damage resistant container in
a secure location.



Actually due to the capitalistic greed of the Yankee running dog imperialists
only half the water needed by the ever suffering workers.

I couldn't quite work "hegemonists" into that.

Dan, U. S. Air Force, retired

(ROBIN FLY) wrote in message ...
Few weeks ago, 2 Lancair 320/360s stopped at my airport. I went over to get a
better look and found their engine air intake does not have any air filter.

Are they designed this way?

Would bugs be a problem?

Does it shorten the TBO?

I built a Lancair 320 back in '91. It was the 16th "fast-build" kit
shipped from the factory. As I recall, the builder's manual for these
early models had few details regarding engine installation. They had
a diagram of a simple airbox that could be constructed out of
fiberglass (which suggested incorporating a foam air filter), but no
other specifics. I ended up making one from sheet aluminum with a
ram-air inlet (unfiltered).

I think there is now a factory built airbox for the plane, but early
examples will vary (it's a homebuilt after all).

Yes, the lack of a filter will probably shorten the TBO, but plenty of
people go without 'em.

Craig.