I'm just beginning a build and have browsed both this thread and the rcgroups build thread. Both are excellent but one very interesting item that I found on the other site is related to battery positioning and balance for the electric version. Anyone who is thinking of making one of these with electric power should check out the battery/motor mount described here (I wish I had but I bought batteries before hand.):

http://www.rcgroups.com/forums/showt...+sopwith+camel

If you are like me forced to put the battery through the fire wall you can fit just about any size if you reverse the firewall mounts so the mounting flanges are outboard of the motor clamp.

Of course putting in the sound system looks like it works just even better.... next birthday perhaps....