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  #1  
Old 10-14-2020, 07:42 PM
flymo flymo is offline
 
Join Date: Apr 2019
Location: Dickson, TN
Posts: 28
Default RV7 Elevator Pushrod

While doing some maintenance today, I heard a faint noise upon moving the stick forward / back. Turns out my RV7 forward elevator pushrod is lightly touching something as the pushrod passes it's "Low Point" of travel. I removed the center cover panel in the baggage compartment, but the contact is forward, beneath the seats / floor panels. Anyone seen this before, any fixes before I tear more into it? Thanks
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  #2  
Old 10-14-2020, 08:05 PM
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rswalden rswalden is offline
 
Join Date: Mar 2005
Posts: 139
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Quote:
Originally Posted by flymo View Post
While doing some maintenance today, I heard a faint noise upon moving the stick forward / back. Turns out my RV7 forward elevator pushrod is lightly touching something as the pushrod passes it's "Low Point" of travel. I removed the center cover panel in the baggage compartment, but the contact is forward, beneath the seats / floor panels. Anyone seen this before, any fixes before I tear more into it? Thanks
Yes.... Continue to investigate.
My friend's RV-6 had a slight scraping noise between the seats when moving the stick fore and aft. After opening up the tunnel cover, flap housing and both floorboards I discovered a nutplate screw that had worn a slot in the elevator pushrod.

If something doesn't look or sound normal...investigate...
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  #3  
Old 10-14-2020, 08:41 PM
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climberrn climberrn is offline
 
Join Date: Oct 2008
Location: Carson City, NV
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If I remember right, I had to open up one of the holes where the forward elevator pushrod went through a bulkhead, under the baggage area. Did it before first flight. Rubbing issues donít fix themselves.
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  #4  
Old 10-15-2020, 07:50 AM
flymo flymo is offline
 
Join Date: Apr 2019
Location: Dickson, TN
Posts: 28
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I'm not a builder (yet) so I was scratching my head about how close the design has the fwd pushrod to another structure. Looks like F-705 could be the issue, floor panels coming out. Thanks
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  #5  
Old 10-15-2020, 09:15 AM
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swisseagle swisseagle is offline
 
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Location: 20km outside of Zurich, Switzerland
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Check the bulkhead at the station of the rear spar. There most builders must reduce the height of the spar carry thru a bit in height. make a shallow, big radius. This was discussed here also and VANS support told to do so also.
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  #6  
Old 10-15-2020, 10:46 AM
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pazmanyflyer pazmanyflyer is offline
 
Join Date: Jul 2007
Location: Litchfield Park, AZ
Posts: 1,057
Default Pushrod rubbing

Here's a thread on VAF that might help you locate the issue. Easy fix.

https://vansairforce.com/community/s...ad.php?t=54390
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  #7  
Old 10-19-2020, 09:51 PM
flymo flymo is offline
 
Join Date: Apr 2019
Location: Dickson, TN
Posts: 28
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Finally got the forward elevator pushrod out, it has been touching the rear spar bulkhead. I relieved some material as discussed in other threads, but am wondering if I should build a new pushrod. The rub area is a little over an inch long, and you can feel a slight flat spot. My crude calipers show about 3-4 thousandths worn away. I'll probably ask Van's as well. Thanks for the help.
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