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  #1  
Old 08-13-2018, 01:59 PM
Breezy Breezy is offline
 
Join Date: Nov 2011
Location: Okeana, Ohio
Posts: 72
Default Elevator Rub

Mounted Elevator to Stab. Very closely measured the eye bearing distance from stab spar. When moving elevators to travel limits there is rubbing at the HS 912 mount flange and the leading edge of the elevator. Center of leading edge has clearance the contact occurs in the last degrees of the travel limits. Tried backing out the eye bearing a turn to gain additional clearance but not enough.

Any others encounter this?
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Breezy
First offense RV-8; N594WR; 80594 (time served)
ECI TITAN IOX 360 A1A9N, G3X

Repeat Offender: 83137 (Flying 10/16)
N837DW; Superior IO 360; G3X Touch.
Exceptional Aircraft Award, Sun N Fun 2017; Best Homebuilt, Mid-Eastern Regional Fly-in 2017.

One More Time: 140359, -14 in process, IO-390 (Maybe)


KHAO (Hogan Field)
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  #2  
Old 08-13-2018, 02:21 PM
mountainride mountainride is offline
 
Join Date: Jan 2018
Location: Golden, Colorado
Posts: 26
Default

I experienced this as well using the exact specs from the book. Its close tho, it doesn't rub until the last degree or two publish in the book. I am not going to mess with it until I set the travel limit later in the build. If I need to back out the bearing a turn or two or even shim the torque arm bearing out .32 I will do that later. After checking out a completed -14 I still have hope that there won't be any rubbing at all once I set the travel limits.

-Jason
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Last edited by mountainride : 08-13-2018 at 02:23 PM.
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  #3  
Old 08-13-2018, 03:59 PM
PatrickN PatrickN is offline
 
Join Date: Feb 2018
Location: Redmond, WA
Posts: 14
Default

Funny, I ran into this exact problem yesterday! I tried messing with the shape of the leading edge yesterday without much success, but the thought occurred to me this morning that I may be able to back out the rod end bearings a half turn or two. Also interested in how people have dealt with this in the past.
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  #4  
Old 08-13-2018, 04:01 PM
mturnerb mturnerb is offline
 
Join Date: Apr 2015
Location: Ponte Vedra, FL
Posts: 768
Default

I had to back out rod ends a couple of turns. Discussed with EAA tech counselor. Most critical is to be sure you don't have too many threads exposed on the rod end AND properly torquing the jam nut.
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  #5  
Old 08-13-2018, 04:10 PM
JoeRV14 JoeRV14 is offline
 
Join Date: Feb 2018
Location: Poplar Grove, Illinois
Posts: 21
Default Different rod end bearings?

I thought I saw Vans will send a set longer rod end bearing to RV14 guys as this is a known problem. Iíll check the reference when I have more time. Joe (RV14)
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  #6  
Old 08-14-2018, 10:20 AM
Breezy Breezy is offline
 
Join Date: Nov 2011
Location: Okeana, Ohio
Posts: 72
Default

Spoke with Vans. Was told there could be up to 4 threads beyond the jamb nut and still have engagement in the nut plate. Discussed the use of a different eye bearing (MD3616M), however the ball width is greater and would not fit in existing brackets.
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Breezy
First offense RV-8; N594WR; 80594 (time served)
ECI TITAN IOX 360 A1A9N, G3X

Repeat Offender: 83137 (Flying 10/16)
N837DW; Superior IO 360; G3X Touch.
Exceptional Aircraft Award, Sun N Fun 2017; Best Homebuilt, Mid-Eastern Regional Fly-in 2017.

One More Time: 140359, -14 in process, IO-390 (Maybe)


KHAO (Hogan Field)
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  #7  
Old 08-14-2018, 01:51 PM
JoeRV14 JoeRV14 is offline
 
Join Date: Feb 2018
Location: Poplar Grove, Illinois
Posts: 21
Default Thanks!

Thanks for doing the legwork! Almost at that point so this helps a lot. Joe
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  #8  
Old 08-27-2018, 01:57 PM
LarryE LarryE is offline
 
Join Date: Jan 2017
Location: Oklahoma City, OK
Posts: 3
Default Elevator rubbing

I had the same problem. Vanís has a longer resend that will fit in existing brackets. It solved my problem but created other issues I had to compensate for.
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  #9  
Old 08-27-2018, 08:14 PM
JoeRV14 JoeRV14 is offline
 
Join Date: Feb 2018
Location: Poplar Grove, Illinois
Posts: 21
Default Thanks

Thanks Larry! I think I asked you a million questions at Oshkosh and drooled a little on your 14... Lol - Joe
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