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push pull tube vs. cable

 
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tallswampman



Joined: 12 Nov 2009
Posts: 4

PostPosted: Tue Jan 12, 2010 6:24 am    Post subject: push pull tube vs. cable Reply with quote

Has anyone on here used push/pull tubes instead of cable for the control surfaces. It would appear to be a better method in several aspects.
<![if !supportLists]>1. <![endif]> Eliminate the necessity for periodic cable tensioning.
<![if !supportLists]>2. <![endif]> Ease of inspection
<![if !supportLists]>3. <![endif]> Easier to disassemble and re-assemble
<![if !supportLists]>4. <![endif]> Simpler for folding the wings with the folding wing option.
<![if !supportLists]>5. <![endif]> More positive feedback of control inputs

I realize that this is a major design change, but I also realize that with all of the adventurous spirits that we have out there building the 701’s, that several of you have come up with something that works.

Mike
scratch build, just started
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n801bh(at)netzero.com
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PostPosted: Tue Jan 12, 2010 7:02 am    Post subject: push pull tube vs. cable Reply with quote

I don't know about the 701 but........
The 801 has pushrods all the way to the flaperons so speeding up the folding wing option seems moot.
The geometry of the elevator and its non symetrical bell crank angles and pick up points do not
lead to push rods without a major redesign.
Other then that these things are "experimental" so one can modify to their hearts content.
do not archive.
From: "Mike Schaff" <mschaff(at)dbdoran.com>
To: <zenith701801-list(at)matronics.com>
Subject: push pull tube vs. cable
Date: Tue, 12 Jan 2010 08:13:35 -0600


<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
Has anyone on here used push/pull tubes instead of cable for the control surfaces. It would appear to be a better method in several aspects.
1.  Eliminate the necessity for periodic cable tensioning.
2.  Ease of inspection
3.  Easier to disassemble and re-assemble
4.  Simpler for folding the wings with the folding wing option.
5.  More positive feedback of control inputs

I realize that this is a major design change, but I also realize that with all of the adventurous spirits that we have out there building the 701’s, that several of you have come up with something that works.

Mike
scratch build, just started
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bobkat



Joined: 07 Sep 2008
Posts: 143
Location: Bismarck, ND

PostPosted: Tue Jan 12, 2010 7:20 am    Post subject: push pull tube vs. cable Reply with quote

Same with the 701. Takes only a few seconds to unhook the flapperons. Do not archive
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