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Old 07-21-2022, 10:29 AM
fabio fabio is offline
Join Date: Jan 2021
Location: italy
Posts: 54
Default rudder rod end bearing measurements

on page 8-18 in the main manual the measurements are these:
Top: 51/64
Middle 63/64
Bottom 1 3/64
I tried to use these measurements but the top is too close , did you use these measurements or did you use a different?
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Old 07-21-2022, 10:32 AM
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bjdecker bjdecker is offline
Join Date: Jun 2005
Location: Georgetown, TX
Posts: 1,286
Default Start there...

I used 51/64", 59/64" and 1 1/16" as specified in DWG 7, Revision 5 (R5 - 2/25/03) and then adjusted accordingly to get it to fit.
Brian Decker
RV-7 (Flying)

Last edited by bjdecker : 07-21-2022 at 10:35 AM.
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Old 07-21-2022, 11:16 AM
nohoflyer nohoflyer is offline
Join Date: Sep 2018
Location: Brooklyn, NY
Posts: 320

A twist or two of the bearings will make your cutting with a laser overkill.
RV-7A builder
A320 Capt at some airline
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Old 07-21-2022, 12:41 PM
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bruceh bruceh is offline
Join Date: Mar 2008
Location: Ramona, CA
Posts: 2,659

Is the rudder counterbalance hitting the VS skin? That may require some trimming of the skin.

The thread pitch on those rod end bearings is 1/32", so just a half turn will give you 1/64" more or less. Get the top and bottom in and moving smoothly, then figure out where to set the middle one. You also may have to press on the forward edge where it is rolled to get the necessary shape that won't rub on the aft VS spar. Lots of springback in the rolling, so give it a good massage with the palm of your hands and make it into the shape required.
Bruce Hill
RV-9A N5771H flown over 1000 hours!
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