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Rib J

Posted: Mon Feb 20, 2017 3:36 pm
by Johnwell
Still wondering, after reading manual, why I can't place Rib J BEFORE wing close out.... My thinking is a much better (open) access to Rib R and Rib J for laminating it up. I have the 'new' bracket style and steel landing gear. Anybody did this in this order or am I overlooking an important procedure that can't be done if Rib J is already in place when I close out the wing?

Thanks,
John

Re: Rib J

Posted: Wed Feb 22, 2017 12:12 pm
by jchisolm
I've been researching this also. Having done the install after the wing was closed was a real pain. I dont see why we cannot re-arrange the layup schedule so you put in the outboard layups of the aft shear web and rib R with a false skin. Then you can do the inboard side and finally put in the gear. It just means you have to combine the Rib J install and the aft shear web attach plates procedure into one with careful planning on the layup schedule.

I'm in the process of re-writing how I'm going to do those layups so I dont have to try and combine the steps "on the fly". It will be several weeks before I have time to get it done.

Re: Rib J

Posted: Thu Feb 23, 2017 4:34 pm
by Johnwell
I am approaching that step now and will start on Rib R first with layups and the 'false' skin and then onto Rib J in a similar fashion, then Rib I.
I asked several people and all agree that, especially Rib R is so much easier to re-enforce while the wing is open instead of doing this through access holes. Absolute worst case scenario would be removing J or I in case I overlooked something dramatic. Other than mounting gear and flap brackets I can't see any obstacles....so far :mrgreen:

Re: Rib J

Posted: Mon Mar 12, 2018 7:48 am
by pilotniner4
What was the verdict? Did anyone have success with this procedure change? I am approaching wing closure and I like the idea of getting Rib J in there first.

Re: Rib J

Posted: Mon Mar 19, 2018 3:33 pm
by jchisolm
If you still have not closed your wing I would ask if you could check your spar for me. When sitting in the saddles is the spar cap level fore/aft from end to end? I thought it should be, level the length and also fore/aft. My outboard saddles seem a little off. If I level the bottom of the saddle and weight down the wing I'm about 3 deg off level fore/aft at the outboard end with the inboard level fore/aft and the spar level along the length.
I can adjust the saddles a little and get the length and fore/aft all level.

The spar center line is correct with chalk mark on the floor

Re: Rib J

Posted: Mon Mar 26, 2018 12:15 pm
by pilotniner4
jchisolm wrote:If you still have not closed your wing I would ask if you could check your spar for me. When sitting in the saddles is the spar cap level fore/aft from end to end? I thought it should be, level the length and also fore/aft. My outboard saddles seem a little off. If I level the bottom of the saddle and weight down the wing I'm about 3 deg off level fore/aft at the outboard end with the inboard level fore/aft and the spar level along the length.
I can adjust the saddles a little and get the length and fore/aft all level.

The spar center line is correct with chalk mark on the floor


I checked mine with an electronic level and I found .03 degree difference from end to end. Also checked side to side, it was level.

Re: Rib J

Posted: Mon Mar 26, 2018 3:30 pm
by jchisolm
Thanks for checking. Appreciate it