Return-Path: Received: from mail16.syd.optusnet.com.au ([211.29.132.197] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP-TLS id 724771 for flyrotary@lancaironline.net; Fri, 11 Feb 2005 04:53:04 -0500 Received-SPF: none receiver=logan.com; client-ip=211.29.132.197; envelope-from=lendich@optusnet.com.au Received: from george (d211-29-165-181.dsl.nsw.optusnet.com.au [211.29.165.181]) by mail16.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j1B9qEan012162 for ; Fri, 11 Feb 2005 20:52:15 +1100 Message-ID: <003701c5101f$ab706e70$b5a51dd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: : 13b vs 360 performance Date: Fri, 11 Feb 2005 19:54:25 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0034_01C51073.7CD31960" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0034_01C51073.7CD31960 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable [FlyRotary] Re: : 13b vs 360 performanceKen, Did you ever work out why you had problems with the rotors seizing. George ( down under) The Coot is a whole different bird than most of you are flying but = for comparisons I have flown with another Coot with an IO-360 and I can = blow him away on takeoff out of the water but I am cheating as I kick an = extra 100 hp with the nitrous to lift it out of the water, on climb out = he will blow me away as my prop is fixed for cruise and he has a CS = prop, in cruise we are a dead match when I am running at 6500 rpm < gear = ratio is a 2.95 to 1 >. Ken Ed / Jerry, I stand corrected. Let me say that 'the 13b power I see being = achieved so far in NA 13b airplane installations seem to be less than = what O-360 guys are getting'. After mounting props was anybody able = to attain even 6000 rpm in their 13b NA aircraft installation, = level-flight? Tom=20 Jerry Hey wrote: I assume you are talking about a 6000 rpm limited rotary vs a wide = open 0-360. Run the rotary faster and thats the end of the story. Jerry Ed Anderson wrote: > Tom,=20 > I don't really think anyone can accurately make a generalization = like > that. > From: Tom > It's my understanding that NA non-renesis rotary installations > produce less power than 360s, Perry Mick might have a word on = this. > Eric Ruttan wrote: > A 360 Lyc does not produce the same power as a rotary. > If true, then the Ellison card may not get enough air. > If not true, then there is no real reason why the Ellison cannot = feed a > rotary. > > Ed, I understand your math, but even if the local inlet velocity = is much > higher, we dont care. the velocities adverage out to the same, as = the > volume of air =3D velocity * carb area. > > If the velocities are higher, the rotary consumes more air, and = makes > more power. > =20 -------------------------------------------------------------------------= --- Do you Yahoo!? Yahoo! Search presents - Jib Jab's 'Second Term' ------=_NextPart_000_0034_01C51073.7CD31960 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable [FlyRotary] Re: : 13b vs 360 performance
Ken,
Did you ever work out why you had = problems with the=20 rotors seizing.
George ( down under)
   The Coot is a whole different = bird than=20 most of you are flying but for comparisons I have flown with another = Coot with=20 an IO-360 and I can blow him away on takeoff out of the water but I am = cheating as I kick an extra 100 hp with the nitrous to lift it out of = the=20 water, on climb out he will blow me away as my prop is fixed for = cruise and he=20 has a CS prop, in cruise we are a dead match when I am running at 6500 = rpm=20 < gear ratio is a 2.95 to 1 >.
  Ken



Ed / Jerry,
I stand corrected.  Let me = say that=20 'the 13b power I see being achieved so far in NA 13b airplane = installations=20 seem to be less than what O-360 guys are=20 getting'.    After mounting props was anybody = able to=20 attain even 6000 rpm in their 13b NA aircraft installation,=20 level-flight?
 
Tom 

Jerry Hey=20 <jerryhey@earthlink.net> wrote:
I assume you are talking about a = 6000 rpm=20 limited rotary vs a wide open
0-360. Run the rotary faster and = thats the=20 end of the story. Jerry

 Ed Anderson wrote:
>=20 Tom, 
> I don't really think anyone can accurately=20 make a generalization like
> that.
 
> From: Tom
> It's my = understanding=20 that NA non-renesis rotary installations
> produce less = power=20 than 360s, Perry Mick might have a word on this.
 

> Eric Ruttan = wrote:
> A 360=20 Lyc does not produce the same power as a rotary.
> If true, = then the=20 Ellison card may not get enough air.
> If not true, then there = is no=20 real reason why the Ellison cannot feed a
> = rotary.
>
>=20 Ed, I understand your math, but even if the local inlet velocity is=20 much
> higher, we dont care. the velocities adverage out to = the same,=20 as the
> volume of air =3D velocity * carb = area.
>
> If the=20 velocities are higher, the rotary consumes more air, and = makes
>=20 more power.
>
       =20        =20
Do you Yahoo!?
Yahoo! Search = presents -=20 Jib=20 Jab's 'Second Term'

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