X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-iw0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4416462 for flyrotary@lancaironline.net; Tue, 03 Aug 2010 00:30:59 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=wdleonard@gmail.com Received: by iwn8 with SMTP id 8so4475074iwn.25 for ; Mon, 02 Aug 2010 21:30:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=cmevRSnitkd5OaRG9Jj/GfoVf9+Q2JjHgTk4vtQ9xVo=; b=oNl+r+dVblPcL9fyB1VMndAUwpmhb3zKOvrpKDpQJXpy2cnFtqUwMb60rJoJl4FJlD bEwROYESu9Jw4rkqqHVpk4mBrBrS/cnYK77RFLwRLYeIiTwzwBp1ZD5gWAXc38OXXq4E 5yQi9ZLMOn/XA+SW27SALwTiIPhZ3u8a+oPRg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=dQZvgRyz6vIPYzqMEHJUqogzs07ZmDetpfq9EYPQtDsk3FkP1hm6ru2eKjLWt8X3NM P9WbM6qMItsO1gMhcDi9vjuwe5YwC5KZFw6wQm7rj2A3uYhQ1ZFoJuSXO84Pxi69nI6g YAaLLb136adkVNl1TCcU5EaejDBPkIv9tugC8= MIME-Version: 1.0 Received: by 10.231.12.76 with SMTP id w12mr8052073ibw.87.1280809822234; Mon, 02 Aug 2010 21:30:22 -0700 (PDT) Received: by 10.231.32.71 with HTTP; Mon, 2 Aug 2010 21:30:21 -0700 (PDT) In-Reply-To: References: Date: Mon, 2 Aug 2010 21:30:21 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Bad rotary week From: David Leonard To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=000325574cb27ac1a6048ce3c65e --000325574cb27ac1a6048ce3c65e Content-Type: text/plain; charset=ISO-8859-1 Dwayne, I have over 250 hrs on my current turbo, and I think I have identified the problem as running EGT at peak all the time. Now I keep the EGT under 910C (about 1620F I think) and I have a reasonable number of hours and counting. That being said, if you want to run 250+ h.p. for anything more than just take off, you would do best to put in a 3-rotor. There are not many unique parts and most of those will likely outlast any aircraft use. I never burn ANY measurable oil other than the 2-stroke oil I add to the gas. I dont have an oil hatch on my cowl, and dont check oil level on pre-flight. (but I do have an eletric oil level sensor in case it leaks out or something crazy) BTW, I would not trust anything that D. Atkins says. He cost me more time and money in my project than I care to mention. IMHO, he will tell you anything to make a sale. -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net On Mon, Aug 2, 2010 at 3:44 PM, Dwayne Parkinson wrote: > Thanks for the quick reply. I'm building a Bearhawk (4 seat, high wing) > on floats so the extra HP is needed especially for take off. I've looked > extensively at using a 13B-REW to try to get the HP I need without adding > the weight and unique parts of a 20B, but turbo installations seem to get > eaten by exhaust heat. I'm unaware of anyone getting 100 hours out of a > turbo. Is there anyone on the list who has more than 100 hours on their > turbo? > > Thanks for the feedback!!! > > Dwayne > > ------------------------------ > *From:* George Lendich > > *To:* Rotary motors in aircraft > *Sent:* Mon, August 2, 2010 5:08:41 PM > *Subject:* [FlyRotary] Re: Bad rotary week > > Dwayne, > I had a feeling things weren't going to plan, however unless you need the > extra power a 16X would deliver because of the larger eccentric and volume, > the 13B is still a good choice IMHO. > Give the volume is the same with the RX7 and RX8 the power is the same. If > more power is needed then PP or Turbo is the answer. > Personally I believe the best answers are in those driving enhancements in > the 13B development for Aviation. I'm hoping Bill Jepson will be up and > running with his lighter housings and PP design sooner rather than later. > He's not saying much as I believe he wants to leave the talking to the > testing results . > George ( down under) > > > For anyone hoping that a 16X would show up any time soon: not ... gonna > ... happen. No RX7 and the RX8 is still powered by the Renesis for 2011. > > http://www.mazdausamedia.com/content/2011-mazda-vehicles-glance > > As if that's not bad enough, when I was at Oshkosh I took in David Atkins > rotary seminar. I came away pretty depressed thinking that I probably won't > put a rotary engine in my airplane. Is everyone else really using 1 quart > of oil every 5 hours? He also didn't have much good to say about the > Renesis in an aviation application which leads me to conclude that the 16X > will fare even worse in aviation applications as it is tweaked to meet > higher EPA requirements and produce more low end torque. > > Is anyone but Tracy using a Renesis? I'd really like to know what HP > you're getting, what the fuel burn is and how it's holding up. > > Thanks, > > Dwayne > > P.S. I couldn't find any rotary planes on the field at Oshkosh. Perhaps > they sank into the mud. > > > > > > > --000325574cb27ac1a6048ce3c65e Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Dwayne,
=A0
I have over 250 hrs on my current turbo, and I think I have identified= the problem as running EGT at peak all the time.=A0 Now I keep the EGT und= er 910C (about 1620F I think) and I have a reasonable number of hours and c= ounting.
=A0
That being said, if you want to run 250+ h.p. for anything more than j= ust take off, you would do best to put in a 3-rotor.=A0 There are not many = unique parts and most of those will likely outlast any aircraft use.
=A0
I never burn=A0ANY measurable=A0oil other than the 2-stroke oil I add = to the gas.=A0 I dont have an oil hatch on my cowl, and dont check oil leve= l on pre-flight.=A0 (but I do have an eletric oil level sensor in case it l= eaks out or something crazy)
=A0
BTW, I would not trust anything that D. Atkins says.=A0 He co= st me more time and money in my project than I care to mention.=A0 IMHO, he= will tell you anything to make a sale.
=A0
--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net


On Mon, Aug 2, 2010 at 3:44 PM, Dwayne Parkinson= <dwaynep= arkinson@yahoo.com> wrote:
Thanks for the quick reply. =A0I'= ;m building a Bearhawk (4 seat, high wing) on floats so the extra HP is nee= ded especially for take off. =A0I've looked extensively at using a 13B-= REW to try to get the HP I need without adding the weight and unique parts = of a 20B, but turbo installations seem to get eaten by exhaust heat. =A0I&#= 39;m unaware of anyone getting 100 hours out of a turbo. =A0Is there anyone= on the list who has more than 100 hours on their turbo?

Thanks for the feedback!!!

Dwayne
<= br>
From: George Lendich <lendich@aanet.com.a= u>=20

To: R= otary motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon, August 2, 2010 5:08:41 PM Subject: [FlyRotary] Re: Ba= d rotary week

Dwayne,
I had a feeling things weren't goi= ng to plan, however unless you need the extra power a 16X would deliver bec= ause of the=A0 larger eccentric and volume, the 13B is still a good choice = IMHO.
Give the volume is the same with=A0the= RX7 and RX8 the power is the same. If more power is needed then PP or Turb= o is the answer.
Personally I believe the best answers = are in those driving enhancements in the 13B development for Aviation. I= 9;m hoping Bill Jepson will be up and running with his lighter housings and= PP design sooner rather than later. He's not saying much as I believe = he wants to leave the talking to the testing results=A0.
George ( down under)

For anyone hoping that a 16X would s= how up any time soon: =A0not ... gonna ... happen. =A0No RX7 and the RX8 is= still powered by the Renesis for 2011.

= http://www.mazdausamedia.com/content/2011-mazda-vehicles-glance<= /div>

As if that's not bad enough, whe= n I was at Oshkosh I took in David Atkins rotary seminar. =A0I came away pr= etty depressed thinking that I probably won't put a rotary engine in my= airplane. =A0Is everyone else really using 1 quart of oil every 5 hours? = =A0He also didn't have much go= od to say about the Renesis in an aviation application which leads me to co= nclude that the 16X will fare even worse in aviation applications as it is = tweaked to meet higher EPA requirements and produce more low end torque.

Is anyone but Tracy using a Renesis?= =A0I'd really like to know what HP you're getting, what the fuel b= urn is and how it's holding up.

Thanks,

Dwayne

P.S. =A0I couldn't find any rota= ry planes on the field at Oshkosh. =A0Perhaps they sank into the mud.









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