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Old 11-07-2018, 04:00 AM
RV3Kev RV3Kev is offline
Join Date: Sep 2017
Location: Traralgon Australia
Posts: 25
Default Out side main rib

As noted in several post, the outboard main rib at station 108.375 canít be attached the way indicated in the instructions. The easiest way is to use counter sunk rivets on the doubler as suggested by David Paule. Looking at the ED involved, itís ok ,close but ok.

The question is whatís is the best rivet pattern to use. I have looked at two alternatives. The one on the left is the normal pattern to be used on the other main ribs. The other one is designed to get the most spacing between rivets. I think l prefer the alternating pattern

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Old 11-07-2018, 06:19 AM
RussellT RussellT is offline
Join Date: May 2016
Location: Albany Western Australia
Posts: 52

I can't see your pics but with mine I did as the normal pattern, and as mentioned used AN 426's for the rib. The five AN 470's that secure the angle on the spar/doubler are set inboard of the rib flange.
RV 3B. Very slow build. At fwf & baffles...
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