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  #1  
Old 10-14-2018, 08:12 AM
Brent Brent is offline
 
Join Date: Jan 2013
Location: Hanover, Pa
Posts: 21
Default Control movement

I will be flying someone else’s newly built RV7. I would like to check the angular movement of the aileron and elevators, but cannot find the reference. I believe it should be in Section 15, but cannot find it in my RV8 documentation.

I would just like to be able to check how many degrees up and down.

Thanks, Brent O
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  #2  
Old 10-14-2018, 08:25 AM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
Posts: 4,520
Default RV7 Construction manual

Just be sure there are positive stops for all extremes.

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RV-7
1st Flight 1-27-18
Phase II 8-3-18
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  #3  
Old 10-14-2018, 07:44 PM
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AlexPeterson AlexPeterson is offline
 
Join Date: Sep 2005
Location: Maple Grove, MN
Posts: 2,096
Default

A very common rigging problem is that the lateral pushrods for the ailerons bind in torsion near the ends of up and down elevator movement. There is just enough rotation between the two rod ends on each lateral pushrod to accommodate the angle of rotation of the control stick assy. between full up and full down elevator.

The quick and dirty test for this is to lift/lower the elevator at the tail, noting if it feels like one is fighting a spring near the up and down extents (this "spring" is torsional deflection of the lateral aileron pushrods...). One should not have the stick boot in during this test. The more focused test is to verify that each lateral pushrod can be still rotated a tiny amount when the stick is at each corner.

This problem has existed in almost every plane I've inspected prior to first flight.
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RV6A N66AP 1600+ hours
Maple Grove, MN
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  #4  
Old 10-14-2018, 08:24 PM
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RV8JD RV8JD is offline
 
Join Date: Jan 2005
Posts: 917
Default

In addition to the control surface deflection limits in BillL's post above, here is another constraint on rudder deflection - a minimum of 1" between the rudder and the elevators. This was taken from the RV-8 construction manual, but I think it's the same for the RV-7.

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Carl N.
Arlington, WA (KAWO)
RV-8, 420 Tach Hours
(Pic 1),(Pic 2)
- Out with the Old, In with the New
(Pic)
RV-8, 1938 Tach Hours (Pic 1),(Pic 2) - Sold

Glasflügel Standard Libelle 201B, N564NS - Sold
Rolladen-Schneider LS1-f, N61MP - No longer owned

Last edited by RV8JD : 10-14-2018 at 08:26 PM.
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