X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from web83915.mail.sp1.yahoo.com ([69.147.92.125] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with SMTP id 4480930 for flyrotary@lancaironline.net; Sat, 25 Sep 2010 13:37:19 -0400 Received-SPF: none receiver=logan.com; client-ip=69.147.92.125; envelope-from=keltro@att.net Received: (qmail 59483 invoked by uid 60001); 25 Sep 2010 17:36:42 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1285436202; bh=eZf34vvp8enMyuOx2jM3YzwnaQ9yiWizOJOGwh96cBQ=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=qw9RdVCvRl0KCdJcV1ETurzw1P4E7wbcWFezpqJbZISICiopJZQXTghYITwBs1Xzj1oFVVLsaUaAMwV4gYhQYclP+w0cqJcFlAKlvPS1o6DLh4iudLjSIvg+gkbqarYykaWjucpeH+0iZ5prWFDyLc1fZE78G2ufezTQ3FzXKvA= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=att.net; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=4F77c7eL4MwEtEHUl4N/YrHBbdf4xguVcue5B5BrSsANEZgUR6K+41xGQQJiEiYyPRaAMJR1RpE/cbfAUes5GaZfhQlh5ezLdGCcj/IdFK42O43mcoEJccvNtu1WeeN/EYFSIKNKLQEHLrWNNVEFvne9HcBRSsHGe1W79s/GATI=; Message-ID: <594546.57071.qm@web83915.mail.sp1.yahoo.com> X-YMail-OSG: EKVAeZQVM1kdxZxe35mItITdDPAQTBnzNtnDbQZayP3wQbb SKiNfvlCDU6PuO7sV43rPQGW.RgafT7ezYtUQL3xg.RvlIvx9o.H89M3j6Gk 1Mw9cx4azy2Gs5_9fT.BUe4X9bx6_1pCYm2JyMFHDvSB5csiy9WHN7Zcmchi 9fwg3YESL4ga8UsqS1SCsjI5402vWdJGlrkWRe9yLQCe8Y.F8B6Bvhy_ZI_m rpauHLZQDrjMr4rckRQApLT8fagfkI4BOkCtqmwkmoNFV1xAPaZOGESIHPKv pgDrqFTJ5S4njlNVI4uC3Dra3lPjHRxfqug.USYvNujYV4.hD Received: from [208.114.46.0] by web83915.mail.sp1.yahoo.com via HTTP; Sat, 25 Sep 2010 10:36:42 PDT X-Mailer: YahooMailRC/497 YahooMailWebService/0.8.105.279950 References: Date: Sat, 25 Sep 2010 10:36:42 -0700 (PDT) From: Kelly Troyer Subject: [FlyRotary] simple dyno To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-245059808-1285436202=:57071" --0-245059808-1285436202=:57071 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Andrew,=0A=C2=A0=C2=A0=C2=A0 You are going to do your HP measurments withou= t a gearbox (direct =0Adrive)?.......=0A=C2=A0Kelly Troyer=0A"Dyke Delta"_1= 3B ROTARY Engine=0A"RWS"_RD1C/EC2/EM2=0A"Mistral"_Backplate/Oil Manifold = =0A=0A=0A=0A=0A________________________________=0AFrom: Andrew Martin =0ATo: Rotary motors in aircraft =0ASent: Sat, September 25, 2010 10:56:16 AM=0ASubject: [FlyRotary] s= imple dyno=0A=0AWhilst researching propellers, I came across this gem of in= fo from =0Awww.jcpropellerdesign.com =0A=0A=0AGustave Eiffel (1832-1923) ca= me up with a simple solution for measuring HP =0Awithout complex apparatus,= By using a balanced wood bar instead of a propeller =0Awith a square cross= section of 1/15th=C2=A0of the length of the bar, you can measure =0Athe rp= m and calculate the HP available.=0APower in HP =3D 0.0532 (diameter/450)5 = (RPM/1000)3=0A=0AAs I need a load on the engine when I run it I=E2=80=99m g= oing to give this a go, 1350 x =0A90mm at 7000 rpm will give me 191hp, that= =E2=80=99ll do if I can get it.=0A-- =0ARegards=0A=0AAndrew Martin=0ARenesi= s RD1c =0AWest Australia --0-245059808-1285436202=:57071 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
=0A
Andrew,
=0A
    You are goi= ng to do your HP measurments without a gearbox (direct drive)?.......
&n= bsp;
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/= EM2
"Mistral"_Backplate/Oil Manifold =0A

=0A

=0A
From: Andrew Martin <andrew@martinag.com.au>To: Rotary motors in airc= raft <flyrotary@lancaironline.net>
Sent: Sat, September 25, 2010 10:56:16 AM
Subject: [FlyRotary] simple dyno

Whilst researching propellers, I came across this gem of info from <= A href=3D"http://www.jcpropellerdesign.com/" rel=3Dnofollow target=3D_blank= >www.jcpropellerdesign.com =0A

Gustave Eiffel (1832= -1923) came up with a simple solution for measuring HP without complex appa= ratus, By using a balanced wood bar instead of a propeller with a sq= uare cross section of 1/15th of the length of the bar, you can measure= the rpm and calculate the HP available.
=0A
Power in HP =3D 0.053= 2 (diameter/450)5 (RPM/1000)3
=0A

=0A
As I need a load on the engine when I run it I=E2=80=99m going to give= this a go, 1350 x 90mm at 7000 rpm will give me 191hp, that=E2=80=99ll do = if I can get it.
--
Regards

Andrew Martin
Re= nesis RD1c
=0A
West Australia
--0-245059808-1285436202=:57071--