I've just finished cutting my cores and my TE are drying as we speak (or type).

It's a 60" plank wing using an MH45 airfoil and it looks like a Hershey bar right now. I've also made a little fuse to put the receiver, battery and vertical fin in as well.

Since this is a constant LE and TE rectangle, where do you think the CG should be? Logic tells me that 20-25% of the chord would be a good start as I base this on the Nitro powered combat wings that I've scratch built.

However, I've read planes such as the M60 can see a bunch more tail weight than seems logical.

I plan on using Ultracote to cover it, burying the elevon servos and fabbing a couple cute little fairings to cover the linkage and make it a bit slicker.

For DSing I've seen some planes get kinda heavy (like 3-5lbs). Can anyone clue me in to why so much ballast is needed? And, do I put it on the CG for the best results?

Thanks for the help. NAES