How do you balance a Chrysalis with a very light radio?

I just finished my Chrysalis with a finished and covered weight of 5.15 oz. I had to use 270 ma batteries and fully cased 535 with a bit of lead just to get to the aft most cg location. I used FMA 80 servos just aft of bulkhead 2. How can this plane be balanced with 110ma and a caseless receiver?

From : Don Stackhouse

Ric, what did you use for covering on the tail? Your overall weight sounds ok, but the least bit of unnecessary weight in the tail of any model can lead to C/G problems. If you used iron-on covering on the tailboom that could be your problem.

Chrysali have been built with 110 mah batteries, a caseless 535 Rx and micro or ultra micro servos, with no balance problems. The way to do this is to be fanatical about weight in the tail, build it as the narrow fuselage V-tail version, do a good, LIGHTWEIGHT Varathane finish on the tail cone and tail surfaces (2-3 VERY THIN coats is all you need, make sure the paper towel is JUST BARELY DAMP when you wipe them on, and be sure to let it dry thoroughly between coats), and put all the radio gear as far forward as possible. Put the battery all the way forward in the nose, with the Rx behind it, and the servos just behind the Rx. This means you will need to make some holes in F2 for the pushrods to go through. If you are using the S-80 ultra-micro servos, stack them one on top of the other so they can both be as far forward as possible. It's possible to get under 8 ounces ready to fly, with the C/g in the specified range.

Your model is probably too far along for some of these tricks, but it isn't too late to re-locate your servos in the nose, if you don't mind altering your pushrods. This should let you take out some of the ballast.

Don Stackhouse @ DJ Aerotech