Ok, Ihave a custom designed plane that flies GREAT, except Ihave to add 16oz of weight to the front just to get it CLOSEto neutral (still a BITtail heavy).

It's an aerobatic design, much like a yak/sukhoi, but custom design.

Iwant to make it again but fix the CGissue. I'm thinking that Ican shorten the tail by about 2"to fix it, but was wondering if ANYONEout there can estimate the distance needed to neutralize 16oz on the nose?You will of course need info to do this.Here is the basic info. Let me know if you need more.Iwill even pay you (can send you paypal or gift card to horizon or something)for your knowledge.Just let me know if you want to talk on the phone or email to get specifics.

It's a yak style(but funky made up design).
Wingspan:75"
length:spinner to tail tip:71"
Length:Prop to hinge on stab:57.5"
DistanceProp to CG(where the plane flies nuetral, ideal CG):18.5"
CGto LEof Stab:35"
Stab/Elevator Chord:9.5"... Elevator 4"Stab 5.5"

AUW:no gas - 14lb 1oz. This is WITHthe added 16+ oz of weight added to the nose.

It actually flies amazing, but having to add a lb of weight to the nose is making it hard for the engine to fly it well, ANDI think removing some of the tail would NOThurt it's tracking, as it's tail moment is much longer than any other plane (3d aerobatic)i've ever seen. I think Iwent a little crazy with the moment in the original design.

the tail surfaces are BIG. BUTIhave heard that a bigger stab/elevator actually allows for a slightly more aft CG since there is extra lift in the rear. I could reduce the rudder a bit without affect on flight ithink. The servos are mounted JUST in front of the stab, and are about 2+oz each.So 4.5 oz total.

Just looking and studying it, I'm guessing at moving it all up about 2" .But Iwant to get some good info before igo ordering laser cut parts again etc.

Thanks!