REFLECTOR:Metal Pusher Props

Scott Baker reflector@tvbf.org
Tue, 6 Apr 2004 18:14:03 -0400


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Hello Bob,
Yes - the quick answer is that they are too heavy and they are not =
"optimized" for the speed ranges of the Velocity.
Metal blades are still vulnerable to dings from debris - Dings in metal =
props require dressing to avoid stress cracks.  In many ways, wood is =
the better choice over metal.  Now ... what we need is a tough-as-nails =
all carbon fiber blade ... which Aero Composites hopes to produce (in a =
pusher configuration) some day ... but not yet.  Someone mentioned =
Whirlwind in an earlier post.  Whirlwind made a few propellers for =
Velocity aircraft - once upon a time - (I believe John and Mary Wright =
have a Whirlwind on their XL) ... but Whirlwind changed their =
manufacturing process and decided to put pusher blades on the back =
burner.
For now, Mt is the best choice in cs props for Velocity aircraft.
Scott B.

----- Original Message -----=20
    From: SlvEgl99@aol.com=20
    To: reflector@tvbf.org=20
    Sent: Tuesday, April 06, 2004 5:26 PM
    Subject: Re: REFLECTOR:Follow up on my bad landing


    I notice a lot of Lake aircraft flying around. They have pushers and =
I think IO540's driving them. Any one investigate their props?

    Bob Wood
    XL FG, IO540, MT 
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<BODY bgColor=3D#ffffff>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Hello Bob,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Yes - the quick answer is that they are =
too heavy=20
and they are not "optimized" for the speed ranges of the =
Velocity.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Metal blades are still vulnerable to =
dings from=20
debris - Dings in metal props require dressing to avoid stress =
cracks.&nbsp; In=20
many ways, wood is the better choice over metal.&nbsp; Now ... what we =
need is a=20
tough-as-nails all carbon fiber blade ... which Aero Composites hopes to =
produce=20
(in a pusher configuration) some day ... but not yet.&nbsp; Someone =
mentioned=20
Whirlwind in an earlier post.&nbsp; Whirlwind made a few propellers for =
Velocity=20
aircraft - once upon a time - (I believe John and Mary Wright have a =
Whirlwind=20
on their XL) ... but Whirlwind changed their manufacturing process and =
decided=20
to put pusher blades on the back burner.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>For now, Mt is the best choice in cs =
props for=20
Velocity aircraft.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Scott B.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <BLOCKQUOTE=20
  style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
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    <DIV=20
    style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
    <A title=3DSlvEgl99@aol.com=20
    href=3D"mailto:SlvEgl99@aol.com">SlvEgl99@aol.com</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dreflector@tvbf.org=20
    href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, April 06, 2004 =
5:26=20
    PM</DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: REFLECTOR:Follow =
up on my=20
    bad landing</DIV>
    <DIV><BR></DIV><FONT face=3Darial,helvetica><FONT lang=3D0 =
face=3DArial size=3D2=20
    PTSIZE=3D"10" FAMILY=3D"SANSSERIF">I notice a lot of Lake aircraft =
flying=20
    around. They have pushers and I think IO540's driving them. Any one=20
    investigate their props?<BR><BR>Bob Wood<BR>XL FG, IO540, MT</FONT>=20
  </FONT></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>

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