Content-Type: multipart/related; boundary="_2C3A6854-D8C7-4732-BA31-8376D7345C39_" --_2C3A6854-D8C7-4732-BA31-8376D7345C39_ Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"

Charlie, my airframe will be : Twin = fuselage Amphibian (2p+2s, Tandem seating), twin pusher (Billet 13b, P-Port= ), on retractable skis (water ops), imbedded tires (land ops), carbon fiber= (much/most cored sandwich). Oh yes=E2=80=A6my design! =C2=A01=E2=80=9D:12= =E2=80=99 scale electric RC model tested on calm water so far. Starboard ha= lf, skeleton full scale =C2=A0plug on floor now=E2=80=A6 waiting on engines= for nacelle shape integration. They are a year late. Buying from

Australia was slow! Hope to use Neil=E2=80=99s 3.12 reducti= on if it can be beefed up to hold the HP. Yes it is truly EXPERIMENTAL! -Ja= mes whitehurst

Sent from Mail for Windows 10

From: Ch= arlie England ceengland7@gmail.com
Sent: Friday, August 28, 2= 020 12:53 PM
To: R= otary motors in aircraft
Subject: [FlyRotary] Re: Turbos.....= ...

James,

What is your airframe?

<= p class=3DMsoNormal>

Char= lie

Virus-free. <= span style=3D'color:#4453EA'>www.avast.com

On Fri, Aug 28, 2020 at 11:40 AM James Whitehurst flyboyusvi@gmail.com <flyrotary@lancaironline.net>= wrote:

<= div>
??? Above 10,000 ft? I couldn=E2=80=99t figure out how=E2=80=A6 = so I just received my Borg Warner EFR9280 Turbos with water and oil cooled = ctr aluminum housing. I know its more complex but I figure I=E2=80=99ll hav= e the HP to 18,000=E2=80=99. Comments enjoyed? Jame= s whitehurst

Sent from Mail for Windows = 10

From: lehanover lehanover@aol.comSent: Friday, August 28, 2020 9:47 AM
To: Rotary motors in aircraf= t
Subject: [FlyRotary] Re: Turbos.........
&= nbsp;
As you can see on this dyno sheet much powe= r is available where most folks like to run aircraft Rotaries.

The ports you see in t= hat picture are designed to operate best at 9,400 RPM, at 250HP, however th= at is a 12-A engine.
2292 CCs vice 2900 CCs fo= r a 13-B, so more power from a 13-B. So ports designed for best power at sa= y 5,500 RPM would have a shorter top (Closing Point) and a smaller bridge o= pening. I do not let any of the side seal ends to cross over the port so si= de seal damage is not a factor. So very nearly stock service life minus the= wear you would expect from spending hours of operation at full throttle. W= ith synthetic 2 cycle oil in the fuel and in the sump I suspect (but do not= know) about 500 to 1,000 hours. A hot compression check or a hot
leakdown test will tell the tail.........LEH

In a message d= ated 8/28/2020 7:31:58 AM Eastern Standard Time, flyrotary@lancaironline.net writ= es:

One word....Turbo normalizing. Ok that's two words, but that= 's my plan.

In your opinion, how reliable is a bridge= port engine? At what RPM do you see the benefits?
Les Criscillo=
Pilot, Brewmaster, Maker
From: Ro= tary motors in aircraft <flyrotary@lancaironline.net> on behalf of lehanove= r lehanover@aol.com<= /a> <fl= yrotary@lancaironline.net>
Sent: Thursday, August 27, 2020 9:34:07 = PM
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
= Subject: [= FlyRotary] Turbos.........

Lynn E. Hanover

=

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