RSM's Classic T-Bird II

For whoever knows?????

The RSM T-Bird II plans only show the inboard wing and it is 28" long. The Span listed for the airplane is 56". That would make it an equal span wing airplane! I had a Veco version and kind of remember it being a 1" longer inboard wing. If you make the outobard wing 1" shorter that would shrink the span to 55". I guess what I am getting at is this - was the original T-Bird II equal span for both wings? Or was it 1" longer inboard??? Just curious about what seems contradictory to what I remember. Thnaks for the replies.

Hi Jim,
The T-Bird II wing is built as equal panels and offset in the fuselage 1" inboard.
Bill <><

WWHHOOOWWWEE It's TWO inches Different. I built mine in 1996 and have the planes in front of me. Don McClave re-drew these planes given to him from Bob Emit(sorry for the Spelling Bob)in 1993. RSM then did the kit. The outboard wing is 2” less.

Scott

That's logical. If you move the fuselage inboard 1", then the outboard panel will be 2" longer . . .

As described, it sounds as if it's easy to put the fus where you want. If it's o.k. by you, you can have equal wings or whatever offset you want, depending on what you favour. (Always bearing in mind just how "original" you want to be). All this is o.k. and will probably work fine. However, it's always satisfying from an engineering point of view to locate a rib directly under the fuselage sides. How does this pan out in this case?

There is a center rib that falls under the inboard fuse side. It is built like the Brodak T-Bird I kit, in that regard.
Bill <><

Can we clarify something here? I think we want to move the fuselage to the OUTboard side, which would make the inboard wing longer. That is the usual procedure. Is the T-Bird different somehow?

Thanks,

Ron King

Sorry Ron,
I guess I was a "little" confusing,
If you put the *center* rib under the Inboard fuselage side, you have moved the centerline of the fuselage 1" (or whatever) on to the outboard wing panel.
I think we are straight now.
The wing is offset 1" to the inboard since the middle of the wing is moved to the inboard side.
This does mean that if you cut both fuselage sides exactly alike, one will be wrong for the wing saddle. Either too big, or too small. The true center of the wing starts the LE taper under the inboard fuse side, therefore the out board fuse side opening needs to be fractionally smaller.

I still love building T-Birds!
Bill <><

O.K.

I see, move the fuselage 1" toward the outboard wingtip and make the outboard fuselage side slightly smaller. Seems logical to me!
I suppose there should be a note on the plans somewhere stating to do that?

LAST EDITED ON Oct-05-04 AT 10:46 AM (CDT)
 
Hi Jim,
I just looked at my set of RSM T-Bird II plans. The fuselage centerline is drawn on the wing plan, and is in line with the flap horn. If you look, you will see the center of the leading edge point is 1" to the left of the line drawn through the flap horn/fuse c/l.
There is no note to this effect on the plans. I first realized the fact when I got my first T-Bird plans from Tom Dixon year ago. He pointed it out on the plans.

Bill <><

Bill,

Actually, it was Ralph Wenzel's comment above that confused me. Your comment was clear, but my mind was so befuddled by that time I just wanted to build my plane with equal panels

I guess it was very obvious back in the Good Ol' Days about how to build these things. With the dawn of RC ARFs and now CL ARFs, I'm afraid model building skills will soon be extinct. Pity.

Different Topic - I had hoped to come down and fly at Huntersville, but we had a death in the family recently and the service has now been scheduled at Arlington National Cemetery for that weekend.

Hope to see you guys soon,

Ron King

Hi Ron,
I am very sorry to hear of the death in your family.
I hope to see you soon.
Bill <><

LAST EDITED ON Oct-06-04 AT 11:46 PM (CDT)
 
Hi Bill and all
Just checking in on this one. First. Bill...did your plan of the Veco kit arrive ok? Anyone wanting a copy of this complete VECO kit plan can maybe contact Bill or Leonard.

The Veco kit has only 1 off rib 1. If you measure the wing of 56", this rib is placed on the wing centreline. The fuz centreline is placed on the centreline between rib 1 and rib 2 of outboard wing thus giving 1" offset resulting in 2" difference in the wings 29" and 27". The 5/16" L/E strips are joined on this centreline between rib 1 and rib 2 resulting in slight misalignment which is hidden in the fuz.

Hi Dallas,
Man, I thought I emailed you!
Yes, the plans arrived QUICK, in great shape, and look great!
Thanks, so much.
Bill <><