Brodak Pathfinder wing construction question

[Matt Brown]

I’m about to start on the wing construction of my Pathfinder profile. I’m a bit confused! There are two different ribs. Technically three but W2’s are 1/32 ply and get laminated to some of the W3’s. My confusion is that the W1 ribs which go in the center section have the section forward of the spars 1/16” smaller on the top and bottom rib profile. This would make sense if only the leading edge gets sheeted but the wing gets either sheeted or capstripped all over. I can’t see double sheeting that section making any sense nor a gain in strength really. Instructions don’t mention anything about it either. Do I just have maybe an early kit that had this mistake in the laser cut file? I’m thinking I’ll just add a little cap strip to each one in that area. Nothing else makes sense to me, unless I’m missing something that I’m not seeing in the build instructions.

Thanks, Matt

[Dave Rigotti]

Double LE sheeting at center section.  "Scrap balsa blocker" is what I believe is called out on the plan set.  ALSO shows on the fuselage side view wing section.

[Matt Brown]

Double LE sheeting at center section.

Thanks Dave, never seen that before but I’ll go with it. I just reread the instructions and still can’t find it. I guess it’s a bit of extra strength for the fuse joint. I could probably do the cap strip I was going with originally as I’ll be using electric power but a few extra grams aren’t going to make much difference!

Matt

[Dave Rigotti]

You can see the notation about it in the pic you posted.

Thanks Dave, never seen that before but I’ll go with it. I just reread the instructions and still can’t find it. I guess it’s a bit of extra strength for the fuse joint. I could probably do the cap strip I was going with originally as I’ll be using electric power but a few extra grams aren’t going to make much difference!

Matt

[Matt Brown]

You can see the notation about it in the pic you posted.

I saw that after my initial post but it wasn’t mentioned in the instructions that I could find.

Matt

[Dave Heinzman]

  Sorry I'm a little late, but my PF Twin has double LE center sheeting sheeting. I lightened up the inner sheeting a little with some holes.
  Hope this helps

  Dave

 

[Steve Dwyer]

Hey Dave,

PM me I'd like to chat about the PF Twin.

Steve