I'm building a Senior Telemaster currently and like many others am leaving the spec'd "servo-compartment" empty and placing the servos elsewhere. This leaves the entire under the wing cabin area empty for a variety of uses (bomb bay, camera gear etc.) The area in my configuration is about 4" W x 6" H x 15" L. Assuming that one needs a fuselage former under each end of the wing, that's about the maximum size of such a compartment on the Senior Telemaster. Photo's on the Senior Telemaster Modifications To Be Thread. I'm able to fit comfortably a 24 Oz Great Planes fuel tank in the fuel compartment with plenty of room under that for the Rx and Servos battery pack. As to your cargo weight questions that pretty speculative. How heavy will the plane be built, how will the weight be distributed? How many control functions will be necessary? From the posts I've seen re glider tows, candy drops and such, payloads of up to 10 lbs are referenced ???? The Giant with the right engineering would be capable of more than that I would assume but wouldn't hazard a guess.

Power plant choices for both the Senior and/or Giant are numerous. Far more than I would care to guess at. I have a OS FX .61 2 cycle glow installed for my purposes. A .91 would fit easily but what's the optimum power for what purpose..............????

Not sure what you have in mind, how much you need to lift how high for how long but your search may wish to include looks at the Flyin King and Super Flyin King by BTE as well. Large high lift planes as well. More ruggedly built as well in my opinion.

A search will reveal a lot of information on a recent build of the Giant and a variety of others. One of the many virtues of the Telemasters is the simplicity and lightness of the original design. As to plans, they are available from RCM magazine and the supplier of the kits involved, Hobby Lobby.