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Hey Bill;
Makes sense, although we're thinking with + or - 1600
degrees at the turbo inlet, not sure how much raw oil is going to make it past
it. Push comes to shove maybe a down diverter of some
kind.
Greg
----- Original Message -----
Sent: Thursday, March 12, 2009 3:47
PM
Subject: [FlyRotary] Re: Fw: [FlyRotary]
progress on N178RG
Greg,
Another thing about the exhaust out the side…Don’t
forget that we are adding oil to the fuel. You will get some oil stains
out of the exhaust and they will look better on the bottom.
:>)
Bill B
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Mark Steitle
Sent: Thursday, March 12, 2009 11:47
AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Fw: [FlyRotary]
progress on N178RG
The "exhaust exit out the side" should look really
cool, but will certainly add drag to your airframe. I didn't do this
because my door is on the left and I didn't want to risk asphyxiating myself
and my pax. My DNA muffler exits out the left tunnel and just about
fills the tunnel. I'm considering adding some louvers on the left
side cowl for the oil cooler exit air. I think it would really help with
the oil temps, maybe enough to allow removal of the oil-to-water
exchanger. It would also provide additional flow for the water
radiator. But, as I stated above, it will add to my cooling drag.
Then again, maybe I should just leave things alone.
On Mon, Mar 9, 2009 at 10:36 AM, Greg Ward <gregw@onestopdesign.biz>
wrote:
Yeah, it's a Legacy, and to flip it over, we have to
wheel it outside, and crank the rotisserie as high as it will go, lotta'
fun. As to the turbo and exhaust, they occupy the whole lower left area
of the cowl, and exit directly out the side, and as I said below, we are
leaving the stock exhaust bubbles in the lower cowl intact for heat to exit.
Tests will tell how effective this is.
----- Original Message -----
Sent: Monday,
March 09, 2009 5:18 AM
Subject:
[FlyRotary] Re: Fw: [FlyRotary] progress on
N178RG
That is a cool looking scoop. I'm looking
forward to seeing the side profile. This is a Lancair Legacy,
correct? (BTW, how do you flip it over inside the
garage?)
One comment... don't underestimate the heat
generated by the 20B exhaust. I think one of the big benefits of
having the radiator inside the cowl is that the airflow helps to
cool the white-hot exhaust. Without that airflow, you risk
melting anything within sight of the exhaust.
On Sun, Mar 8, 2009 at 9:10 PM, Greg Ward <gregw@onestopdesign.biz>
wrote:
----- Original Message -----
Sent: Sunday,
March 08, 2009 7:06 PM
Subject: Re:
[FlyRotary] progress on N178RG
A few shots of our cooling system finally
mounted as far as the firewall. The two 1-1/2" cooling
lines will be covered with 3" 1/2 round plastic covers, 2" smaller in
diameter than the exhaust outlets on the cowling, which will continue to let
heat from the engine exit. You can't see the oil cooler, as it is
mounted inside the scoop, in a similiar fashion as the
P-51.
We are awaiting final engine dyno tests, and then we
can mate the whole mess up, and start on the next
phase.
Lancair 20B N178RG in
progress
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