X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bruce Cosgrove" Received: from mr11p00im-asmtp004.me.com ([17.110.69.135] verified) by logan.com (CommuniGate Pro SMTP 6.1.11) with ESMTPS id 8823884 for flyrotary@lancaironline.net; Tue, 26 Jul 2016 23:28:13 -0400 Received-SPF: pass receiver=logan.com; client-ip=17.110.69.135; envelope-from=bcosgrove@mac.com Received: from process-dkim-sign-daemon.mr11p00im-asmtp004.me.com by mr11p00im-asmtp004.me.com (Oracle Communications Messaging Server 7.0.5.38.0 64bit (built Feb 26 2016)) id <0OAY00H00ETPQP00@mr11p00im-asmtp004.me.com> for flyrotary@lancaironline.net; Wed, 27 Jul 2016 03:27:46 +0000 (GMT) Received: from Mackintosh1.local.mail (231.65.70.115.static.exetel.com.au [115.70.65.231]) by mr11p00im-asmtp004.me.com (Oracle Communications Messaging Server 7.0.5.38.0 64bit (built Feb 26 2016)) with ESMTPSA id <0OAY0090LEY7IX20@mr11p00im-asmtp004.me.com> for flyrotary@lancaironline.net; Wed, 27 Jul 2016 03:27:46 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-07-27_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 clxscore=1015 suspectscore=10 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1510270003 definitions=main-1607270036 Date: Wed, 27 Jul 2016 13:27:41 +1000 To: Rotary motors in aircraft Message-id: In-reply-to: References: Subject: Re: [FlyRotary] Re: New PSRU on the Horizon X-Mailer: Airmail (375) MIME-version: 1.0 Content-type: multipart/alternative; boundary=57982a2d_4cc7db9b_2ba DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mac.com; s=4d515a; t=1469590066; bh=WOzKMQ4vdpa5etwlCXHVvMmsWAP1NwIAvrR0Ehu2668=; h=Date:From:To:Message-id:Subject:MIME-version:Content-type; b=F6PtypW7Y1mqWVdMHerQV0wLi5aMibQl6FBQi+znNVkSzjcvJfzEvt0XX6XmI/wP6 pOhIo5ooSRyT7ccmouQ53siEeDbbqnecgVCz1/fRr2z0yl2H4Ii3IThAfLZOcUgQrx YDsPUlvnVZaVK7/Ph3VA4gR+MaevTN2FF0jaz83NMS3AHH4uB83dfuDihqbMZakVcX LeyfSkdTtahqqiZsVpUwWf/muoafcLIvUzb2N3kVm3pWuCYj50sBbqFq9cUaoR2TsY i7C6aFJQS2SE2u8xnFaEnHkZzaFm/2HqHYQKjxmgHT4TiOkUYp2aHvfEvu9dW4iGer eng0iGi0irvFA== --57982a2d_4cc7db9b_2ba Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi Charlie I agree with you - I was hoping that at least the 2.85 option would be av= ailable with the new PSRU, as I wish to keep cruising revs in the lower 6= K range --=C2=A0 Bruce Cosgrove Sent with Airmail On 27 July 2016 at 12:57:46, Charlie England (flyrotary=40lancaironline.n= et) wrote: 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.rotarpower.com/=C2=A0in collaboration with Neil Unger of Australia is gearing up to produce a new PSRU =C2=A0that wo= uld seem to eliminate any weak points in Tracy Crook's popular RDx searies of PSRU's.........Check out his webs= ite 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, b= ut it's a shame he chose such a wide ratio. Hardly anyone will want to op= erate the engine at 8k rpm, and even if they do, it will need a larger di= ameter prop than most homebuilts can swing safely, due to ground clearanc= e 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=3F (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 --57982a2d_4cc7db9b_2ba Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline