A question about Dihedral

[Mike Griffin]

I you have a profile fuselage and the wing is sitting low in the fuselage and calls for dihedral, how much would you have to move the wing cutout up to use a straight wing?

Mike

[George Truett]

I think the object is to move the wing to where the leadouts exit at the same point as with the dihedral.  If you have 1.5" of dihedral under each wing tip, you would move a flat wing up 1.5".  Pat Johnston can probably best answer if you can reach him.

[Mike Griffin]

I think the object is to move the wing to where the leadouts exit at the same point as with the dihedral.  If you have 1.5" of dihedral under each wing tip, you would move a flat wing up 1.5".  Pat Johnston can probably best answer if you can reach him.

George that makes perfect sense to me.  The plan called for 1 1/8" of dihedral. 

Thank you,

Mike

[Mike Griffin]

What ever you do,  do not let it go above the prop thrust line. That is too much. Guess how I learned this many years ago.

Tom Morris put out a kit of the P51B, a profile,with dihedral, based on Pat's plans. Works fine.

Ty that is exactly the kit i was talking about.  I wanted to build the wing straight and was trying to find out how much to raise it in the fuselage.  Did the one you bashed fly good or did you build it with Dihedral?

Mike

[Mike Griffin]

It flew great, but two wind gusts in a row jerked it of control and bounced it. Typical of Toms kits, almost all wood is 1/16th and when they crash, they crash. Really PO'd me. It was a great flying profile/WarBird. H^^If I was younger and didn't have 17 kits lined up, I'd do one more.

Ty, just wanted to make sure,  you raised the wing and made it straight,,,,correct?

Mike

[Mike Griffin]

No, I kept it at the bottom, scale like, with dihedral> Wing builds in one part, but one side is elevated.

OK..understand now.   Thanks TY

Mike