Intercooler specs please?

weebyf15 · #1 12-03-19, 04:36 PM

Thank you all; Herb I have not intentionally exceeded the limits and will talk to my Mechanic to get them adjusted. I mostly fly turbine aircraft, in which the throttles are full up (military power) for takeoff. As Of late I have noticed this results in too much pressure about 36 and rpm about 2900. So back to the original question in this thread from me. The placard and Pilot Sup both say AA inter coolers but the sup says 32.8 and the placard says 35.3, which should he adjust it to, or more importantly, which should I ensure I do not exceed.
Thanks if you can help

hharney · #2 12-03-19, 09:01 PM

http://americanaviationinc.com/

weebyf15 · #3 12-06-19, 07:12 AM

Great tip; got an immediate answer and they sent me the correct POH supplement. A/C placard stating 35.3 MAP was the correct answer. Thank you

98_bdanny · #4 06-09-20, 01:06 PM

Who holds the STC now?

hharney · #5 06-09-20, 08:58 PM

American Aviation still has the STC. This is a different system than the Riley Intercoolers

98_bdanny · #6 06-10-20, 01:12 PM

Sorry, who holds the Riley Intercooler STC?

hharney · #7 06-10-20, 04:10 PM

Quote:

Originally Posted by 98_bdanny

Sorry, who holds the Riley Intercooler STC?

Good question, about 10 years ago the Riley STC's address was up in northern Michigan. I have no idea if it still is

JimC · #8 06-10-20, 02:01 PM

I just got the AA flight supplement for my T337E.

It does not mention fuel flow anywhere. It only specifies maximum manifold pressure, which is 30.3" at sea level (down from the 32" of the non-intercooled engines.)

As you climb, you can add MP until you reach 31.3" at 20,000 ft on a standard day, or a max of 32" on a hotter day. On colder days you can always use up to 30.3"

Basically, it gives you a chart that makes sure you're putting in the same air mass as before and not going over. Because the induction air is cooled, that same mass has a lower pressure.

There is no extra power (or free lunch.)