LT-40 Shear Web Problems
 

I have just started construction of the left wing on the Sig LT-40.

I'm having a problem with the fit of the shear webs. They are too short to span from one rib to another. About 1/12" away from touching at each end. Would it be wise to add slivers of balsa in between the ends and the ribs to fill the gap?
If not, what do I do? It seems that they have shrunk.

Thanks for any help you can give.

Shear Web fit
 

Shear webs don't need to contact the sides to do their job just so they are attached to the spar top and bottom. That being said I will add small pieces and fill the gap as it looks neater.

EXCAP232

LT-40 Shear Web Problems
 

Ditto, except that I wouldn't fill the gaps. The wing is going to be covered so who is going to see it?

LT-40 Shear Web Problems
 

Thanks for the help guys, now I can spend another sleepless night getting this thing built. :D

LT-40 Shear Web Problems
 

Doncha just love it?! :D

LT-40 Shear Web Problems
 

Another sleepless night getting it built and another day at work thinking about it and another sleepless night.... :o

LT-40 Shear Web Problems
 

Balance the wing before. you cover . Lot less trimming in flight. My shier stip came out on both sides. no problem .

LT-40 Shear Web Problems
 

Work? I wish. More like school.
Here's my space I have to work with.

http://www.lethbridgerocketry.com/wing-room1.JPG

And here's what I did with the Shear Webs

http://http://www.lethbridgerocketry.com/wing-spars.JPG

Yep, not bad for 3 nights of work.

LT-40 Shear Web Problems
 

Here's that second pic that didn't come through

http://www.lethbridgerocketry.com/wing-spars.JPG

LT-40 Shear Web Problems
 

101,i built one on a kitchen table once upon a time for that was what I had at the time.Looks like you have it covered.Just kidding. ;) When you get through,believe me,it will have been worth it.

Bill

LT-40 Shear Web Problems
 

Work looks better than what I can do and I have 700+ square feet. I better improve!

LT-40 Shear Web Problems
 

Looks like you are doing great! The pics remind me of building planes in my bedroom at my folks house some 25 years ago. Good memories- living with the dust after the sanding steps, sleeping to the smell of drying ambroid glue and aerogloss dope...

You picked an excellent plane to build- simple, forgiving and with very good instructions. Join the wings carefully- you will probably want to find a little more room for that step to make sure that you get it right.

LT-40 Shear Web Problems
 

Thanks for the encouragement and tips everyone.

Build n Flyer, I'll be sure to find a nice big flat spot for that. May have to leave the rez to do so. You should see our floors, they feel uneven when walking on them. Sad part is, the building is only a year old. Here's some more pictures.

http://www.lethbridgerocketry.com/wing-room2.JPG
http://www.lethbridgerocketry.com/wing-unpinned.JPG

LT-40 Shear Web Problems
 

Looks like you're well on your way!

LT-40 Shear Web Problems
 

Black,one thing that you may be able to do for more building area is go to a lumber yard and get yourself a hollow core door to lay on that bed.Just make sure it is straight and flat when you buy it. ;)

Bill

flat door
 

Make sure it stays flat! They do have a tendency to not remain that way.

EXCAP232

LT-40 Shear Web Problems
 

Black, I'm with you! I just finished putting th wings together, I think I'll take RC Outlaw's advice and balance it now. When it sits flat, the right wing sits at 4.25 inches, while the left wing is off the ground 3.5 inches, so i'll have to move it 3/8 to balance it out.