I have started an attempt at replicating a Lil Wizard.  Pictures in ebay ads and here and there on the internet provided some plan views of the parts, which were converted into rough plans.  So far I haven't been able to find anything about where the bellcrank was mounted, and on what (ply platform?).  Same for the exit point and separation of the lead outs.  Can anyone provide the measurements?

Bellcrank center back and out from wing l.e. and fuse;
Leadouts back from leading edge to front line and to rear line.

I built one of these back when attending Ordnance school at Aberdeen Proving Ground in 1965!  Also a Baby Ringmaster.  Long time ago.  Thanks.

Jim

I too have a Carl Goldberg original from around 1972.  Certainly a little worse for wear but might be helpful.

Paul

Terrific help; thank you all.  The control mount pictures are invaluable.  I can get it right now.

I have read how nose heavy they are.  I gave some thought to shortening the nose but decided against it.  The motor mount pieces have been lightened.  The cheeks will get hollowed as well.  The weight savings are probably too small to make a difference. 

Jim

Jim,

I just pulled the shrink wrap off my Lil Wizard kit and dumped out the contents. Some observations:

Goldberg shows the pivot point of the bellcrank 1 and 3/8 inches back from the wing's leading edge, but as we know, bellcrank posiition isn't what determines line tension, other factors do. The left wingtip line guide has the center of the front hole at 1 and 1/8 inches back from the leading edge, the back hole 2 inches back. The nearly 3 inch long piece of lead for the right wing tip weight measures in at half an ounce.

Goldberg called the heavy wing tip weight, plus a rubber band to give some "up" elevator if the lines went slack, its "Fail Safe" system. The rubber band is attached to the aft hole on the bellcrank and to a small piece of wire (I suppose a paper clip would do) and an included balsa gauge is used to set the elevator up about 3/16 of an inch. The wire is then pushed into the underside of the wing and glued in place.

The system worked very well. If line tension was lost, the rubber band gave "up" elevator and the heavy tip weight banked the plane outwards to regain line tension. I flew my Wizard at a Scout jamboree near Clovis, NM, in 1976 in winds so heavy none of the R/C guys dared go up. I was using dacron lines about 40 feet long and although the plane came halfway in when the wind was in my face, it always went back out!

I see no balance point indicated on the plans, btw.

Happy flying,

Bob in NEPA

Any chance you can get full size scans of the plans (and maybe kit too) made?  That would be super awesome.

Phil

A PDF is pretty easy to handle by most. 

If you don't mind risking pencil/ink on the wood trace the parts, unless it is printwood...then scan them directly.  I don't remember what my kit looked like, I was 6 at the time and Dad and I built it at the dining room table.

Phil