Engine choice

Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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From: "Cami Kucera" <cpkucera@idirect.com>
To: "Rebel Builders" <murphy-rebel@dcsol.com>
Subject: Engine choice
Date: Wed, 13 Jan 1999 22:19:26 -0500
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Hello fellow Rebel builders/flyers. I'm a slow (but determined) builder =
in Streetsville Ontario. I am fighting with the idea of building this =
lightweight craft and than hanging a 300+pound thirsty monster on the =
firewall to take my floats of the water some day.=20
I have played with the wing and powerloading figures and came up with =
the attached chart (use Excel 5 or higher).=20
A good performing small seaplane should have a combined wing and power =
loading equal to 25 or less (30 or less for small land plane). A Cessna =
172 seaplane with 180 hp at 2220 lbs has a total loading of 25. 150 hp =
SuperCub with floats: 21.6!!! Wow! (I trained on a 160 hp Cessna 172 =
seaplane and it performed OK with 2 people, total loading at 2220 lbs: =
26.6).=20
I know drag is a factor here as well. Not sure how clean the Rebel is =
compared to the Cessna (all those rivet bumps on the wing must interfere =
a bit).=20
Anyway, you can plug in your own numbers for pilot, passenger etc. and =
see how it comes out.=20
All I need now is a lottery ticket to get me the 914 or the 912S. =
(Anyone with Hirth F30 experience? )
Happy building. Paul Kucera, 453R=20

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<META content=3D'"MSHTML 4.72.3110.7"' name=3DGENERATOR>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT color=3D#000000 size=3D2>Hello fellow Rebel builders/flyers. =
I'm a slow=20
(but determined) builder in Streetsville Ontario. I am fighting with the =
idea of=20
building this lightweight craft and than hanging a 300+pound thirsty =
monster on=20
the firewall to take my floats of the water some day. </FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT><FONT color=3D#000000 =
size=3D2>I have played=20
with the wing and powerloading figures and came up with the attached =
chart (use=20
Excel 5 or higher). </FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>A good performing small seaplane =
should have a=20
combined wing and power loading equal to 25 or less (30 or less for =
small land=20
plane). A Cessna 172 seaplane with 180 hp at 2220 lbs has a total =
loading of 25.=20
150 hp SuperCub with floats: 21.6!!! Wow! (I trained on a 160 hp Cessna =
172=20
seaplane and it performed OK with 2 people, total loading at 2220 lbs: =
26.6).=20
</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>I know drag is a factor here as =
well. Not sure=20
how clean the Rebel is compared to the Cessna (all those rivet bumps on =
the wing=20
must interfere a bit). </FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>Anyway, you can plug in your own =
numbers for=20
pilot, passenger etc. and see how it comes out. </FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>All I need now is a lottery ticket =
to get me the=20
914 or the 912S. (Anyone with Hirth F30 experience? )</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>Happy building. Paul Kucera, 453R=20
</FONT></DIV></BODY></HTML>

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