<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">In a message dated 3/31/2003 6:55:20 PM Eastern Standard Time, BCripe7350@aol.com writes:<BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">From:<A HREF="mailto:BCripe7350@aol.com">BCripe7350@aol.com</A><BR>
Reply-to:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
To:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
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Hello, I am in the process of building an airplane (Beat-On) and was thinking about using cf rods similar to the nyrod method. CST sells them in 050. I saw them used in a couple pattern planes a few years ago. Is anybody still using them? Are they strong enough for elevator and rudder? Any good tips or tricks?<BR>
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Thanks,<BR>
Bill Cripe<BR>
Tustin Ca</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"> </BLOCKQUOTE><BR>
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Bill,<BR>
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The diameter may be a little small to push the considerable load of the control surfaces in flight, without bending. You might want to try the 070" rods, and get the teflon liners to go with them. You will need to support the teflon tubes every 7" or so but you should wind up with a very nice set-up if your mind set is "push-rods or bust"<BR>
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Another thought might be to use the 050" rods in pull-pull configuration, unsupported.<BR>
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Yet another thought is to use 1/8"x.070" carbon tubes as outers and the 050s as inners in true Nyrod configuration. If you extended the 1/8" outer tubes really close to the control surface, then the 050" inner rods would work okay without buckling. The advantage of this would be that the outers are very straight and would not require much support to stay straight under load. And they would be far easier to retrofit a finished model<BR>
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regards<BR>
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Matt Kebabjian</FONT></HTML>