need help have a delta wing spad plan with no instructions or CG placement need to know where the CG of this plane is.

It's a flat wing design delta wing for a .10-.25 engine
wing spans is 24" and length is 24" anyone know would be greatly apprieciated.

thanks guys

delta's generally balance between 11 and 18% mac, but, without exact dimensions, its not possible to figure out where that is.
You can go to this site: and plug in your dimensions, and the %mac, and find out how far from the leading edge the cg should be.
http://www.palosrc.com/instructors/cg.htm

the sweep is 11.5, root cord is 19, tip cord 6.75 half span 11.75
i didn't buy if from a website i got it from the anual swap meet were venders bring stuff to sell.

these are the exact dimensions. not including the elevons.

here it is maybe this will help.

side veiw

I use to have a delta with no airfoil, it use to stall when I went under warp 2 for landings

and moving the CG back a bit would make landing easier but then it would snap and go into a unrecoverable spin if I turn to hard

hope your serves you better

a normal pbf would balance at 22% mac, but, i am not sure what to tell you about that one. Incidentally, you include the elevons in the equation. I think i'd start at 22% back from the leading edge, and just move it back from there, as need be.

thanks i'll try it at 22%

thanks for the help.

The CG on your delta is 9" from the front of your engine mount. Or 7" from where the coro starts. Boogerboy!

hey boogerboy,

what are the throws supposed to be.

elev.
alia.

and how stong a servo should i use, i put a PAW .19 desiel on it.
shouldn't be super fast but unique.

http://www.rcflyers.net/rcfrev_correx.shtml

This looks similar to what you bought.

I get all the throw I can get! I make mine about 45 degrees. Full throttle when u take off the first time. Your using a really cool engine! You should have a bullet! I guess you're figured out u bought that from us? Thanks for the buy and email me anytime for help! We always just use standard servo's. Thanks R/C Rita and the Boogerboy!