scott14

Looking for any tips ......

I would like to sheet from the leading edge back to the first spar.

Do I just relief the ribs the thickness of the sheeting and have at it [>:]

Thanks in advance.....

wldcwbypilot

No, glue the sheeting over them. Also glue a 1 inch strip on the trailing edge and sheet the wing from the root rib out to the third rib and the wing tips outer two ribs. Then sand and cover.

bbmass

My Feedback: (2)

don't forget cap strips on the other ribs. Why sheet the bays out by the wing tips?

GPutt33

My Feedback: (2)

Hi Scott - I’ve built two 4 stars now and sheeted both from LE back to main spar like you want to do.

On the first one, I did what you mentioned, and cut down each rib including the stringer notch down the thickness of the sheeting. I then sheeted the whole upper in one fell swoop, and then the lower. It all came out flush with the LE and Main Spars. It was kind of a hastle trying to get an entire sheet bent, and glued down. Of course this was also the first time I had tried it. That was the 60.

I just got done with a 4*120 and did it a little different. I once again trimmed down all the ribs the sheeting thickness, but stopped there. I then cut strips to fit in between each of the stringers from inboard to outboard and it seemed easier to me.

If your interested I have some pretty complete building pictures with descriptions on my RC web site in my picture albums. You have to go to about page 3 of the albums to finds the Sig Four Star 60 build. The 120 picture build is about the 3rd one down on the opening page.

You'll like the looks of it when your finished.

Hope this also helps a little

Edit for mispelled words

scott14

GPutt33,

Yes I'd like to see the pictures..... Can you send me a link to your web site.


thanks for the info.

coveredup

My Feedback: (1)

On my 4* 120 I just sheeted from the middle back on the top and bottom. The wings will supposidly "flap" with a large engine. Mine has a g 3250 and it hovers.

May I recommend beefing up the tail a bit too.

JNorton

My Feedback: (2)

Scott,

Click on GPutt33 profile button at the bottom of his post.
http://groups.msn.com/PuttsRCHomePage

John

wldcwbypilot

Sheeting the tips would stiffen them and strengthen it. You can cut it down, but if you have a and arf kit that is in need of recovering open the wing up. The sheeting is done as I described and it is less hassle besides adding 1/32 sheeting will not change overall flying characteristics. You can wet the balsa and preshape it by rubberbanding or using a vacuum bag. I have seen wings with and without the rib caps, I prefer to cap them with 1/4 inch wide strips. Adds structure to iron your covering to.

GPutt33

My Feedback: (2)

John - Thanks for giving Scott my link. It's been a couple of days since I've had a chance to check this thread out to see other folks building techniques.

Scott, I hope you found the pics and they were of some help.

marwen1

My Feedback: (6)

You know, everyone has their way of doing what you ask of them. One thing that most builders wil not do is think of what you're making as though you were a millman crafstman. Some might call it - cabinetmaking. Regardless, we all think with the expertise we have gained over the years. EVERY leading edge I've ever seen within the plans, the mfg wants you to use a SOLID piece of balsa. If this is going to be your leading edge, its going to take a beating any time you stike it against something. What I've always used was a solid piece of POPLAR and then skin the entire wing with a really thin plywood. Of course, it has a thickness. That being said, allow for that when you merge the leading edge and the skinning so that it will be 100% smooth.

ENJOY dude!