X-Virus-Scanned: clean according to Sophos on Logan.com From: "Christian And Tamara Mcdonald" Received: from mail-io0-f181.google.com ([209.85.223.181] verified) by logan.com (CommuniGate Pro SMTP 6.1.11) with ESMTPS id 8824363 for flyrotary@lancaironline.net; Wed, 27 Jul 2016 06:49:25 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.223.181; envelope-from=christamarmc@gmail.com Received: by mail-io0-f181.google.com with SMTP id b62so66318988iod.3 for ; Wed, 27 Jul 2016 03:49:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=8YneT6KxdaJX6H8FUw1IVJIF/Nt56PRxWu+2bU2tY0U=; b=QOnHeih5dcrgSe5TvxJp9az8dLCIU3f5DiTyTtn96Dy86kyYDSNFV5gkMPJT+KGqqb qUkQ0p6Rq1WPXa0yrstfZBGQW3yqMcKsrbPGR31GJY1crmPbFaHGznADxIRjBphSY6WJ H7X/NZUeoJEJYUFzSaVFRUO8y87GrtOBidraJC0RmL4TGb+pDJ/J1vLSziXT7W/hFijY 2gEKsN+QuE3pcx/gr+zta0tuqJn+KeqVE/bLoFEHdAtdt3HdbbOu1Rf0L+i0oiuFaPDv E5GSghH1VndkB4VRtyrMLBAl9VaeiGlntqDOjVdFU42he/EEnRNyeadhG91BeItynGVV aQgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=8YneT6KxdaJX6H8FUw1IVJIF/Nt56PRxWu+2bU2tY0U=; b=cA+hjM7QOkSkJ/6aPaVLfJQtbwou6LCU812tI+rQ845mugPFLzbfDDtIeNm2D7lvXK A151jqgc9SjEBuPj2uU7bVxvDlT6wqai8EJw0Ctvf5c7F8JVIl5eSrAdYBNHCV9WA2lJ 52s6KykgFYbghXuyFkKCl4MFRSQnP6+P2m7hqRjAfBM6DYJrfbp5sXUV7YZi9OKS5evJ AtpzzXv9k1LhGD36U4yRgpJGOdUNp/bFa/MRvi9mVERPPTAVmybRnXXQO4EJtG5bXPBw Tdlw7BN0+w9TqrsllOJ2htW4Qyxc/d8+yORaxjCJ2BxRYEt+Y3FY9C5eUlhx1A8kll3j IDng== X-Gm-Message-State: AEkoouuizS+Ag9OGIfy5u1oiYjDUrjbBWdHqMmbRF9D/T1m+95jRE3PAXhKWOLJ+T9quQkIInyJLXq75aCKtpQ== X-Received: by 10.107.6.159 with SMTP id f31mr35343613ioi.124.1469616547545; Wed, 27 Jul 2016 03:49:07 -0700 (PDT) MIME-Version: 1.0 Received: by 10.107.178.136 with HTTP; Wed, 27 Jul 2016 03:49:06 -0700 (PDT) In-Reply-To: References: Date: Wed, 27 Jul 2016 20:49:06 +1000 Message-ID: Subject: Re: [FlyRotary] New PSRU on the Horizon To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=001a113f914045c7a505389bc471 --001a113f914045c7a505389bc471 Content-Type: text/plain; charset=UTF-8 Hi Charlie Sorry helps if I read the website, doh I'm keen to try the new Peru with my prop, just seems a little shy of on song as it seems to really come on strong a around 6500-7500, just my 2 cents Cheers Christian On Wednesday, 27 July 2016, Charlie England wrote: > On 7/26/2016 8:41 PM, Kelly Troyer wrote: > > Group, > > This will be of interest to the Group.........Randy Kempf of > http://www.rotarpower.com/ in collaboration with > Neil Unger of Australia is gearing up to produce a new PSRU that would > seem to eliminate any weak points > in Tracy Crook's popular RDx searies of PSRU's.........Check out his > website and the PSRU page........ > > > Kelly Troyer > > > Hi Kelly, > > Thanks for the update. It's great that a drive will be available again, > but it's a shame he chose such a wide ratio. Hardly anyone will want to > operate the engine at 8k rpm, and even if they do, it will need a larger > diameter prop than most homebuilts can swing safely, due to ground > clearance issues. More typical operating rpms down in the 6k range mean > sub-1800 prop rpm, which begs an even larger diameter prop. > > Any chance he'll offer the more conventional 2.85? (Something closer to > 2.5 would be even nicer, to get prop rpm closer to the design point for > most homebuilt airframe/engine combos.) > > Charlie > --001a113f914045c7a505389bc471 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Charlie
Sorry helps if I read the website, doh

<= div>I'm keen to try the new Peru with my prop, just seems a little shy = of on song as it seems to really come on strong a around 6500-7500, just my= 2 cents

Cheers
Christian

On Wedn= esday, 27 July 2016, Charlie England <flyrotary@lancaironline.net> wrote:
=20 =20 =20
On 7/26/2016 8:41 PM, Kelly Troyer wrote:
Group,

=C2=A0 =C2=A0This will be of interest to the Group.........Randy Kempf of =C2=A0http://www.ro= tarpower.com/=C2=A0in collaboration with
Neil Unger of Australia is gearing up to produce a new PSRU =C2=A0that would seem to eliminate any weak poin= ts
in Tracy Crook's popular RDx searies of PSRU's.........Check out his website and the PSRU page........ =C2=A0

=C2=A0
Kelly Troyer


Hi Kelly,

Thanks for the update. It's great that a drive will be available again, but it's a shame he chose such a wide ratio. Hardly anyone will want to operate the engine at 8k rpm, and even if they do, it will need a larger diameter prop than most homebuilts can swing safely, due to ground clearance issues. More typical operating rpms down in the 6k range mean sub-1800 prop rpm, which begs an even larger diameter prop.

Any chance he'll offer the more conventional 2.85? (Something close= r to 2.5 would be even nicer, to get prop rpm closer to the design point for most homebuilt airframe/engine combos.)

Charlie
--001a113f914045c7a505389bc471--