I was trying not to discourage CJPOSADA from getting the UCD, but RCLEMENT is right, even the manual calls for 50 oz./torque servos and a minimum of the 70 Surpass 4 stroke. I even bought the other suggested motor, the OS Max 50 SX (a $160 motor!!!) only to find that it wasn't enough. There is a review that was written by a guy who had a .46 AX in his and he ran (Futaba) all S3003's and a S3010 in the rudder who said he had a blast for 3 seasons before going bigger!! I think rtn9105 hit it on the nail with the rubber band comment. The only other thing in question is the radio. I'm not sure what radio you have CJPOSADA, but this plane does pretty much require a computerised radio. With dual elevators and twin ailerons for a total of 6 servos (2=wing, 3=tail 1=throttle) you won't be able to enjoy flaperons or ailevators and dual rates are a must (unless you have exponential turned way up). Plus you might want to mix certain controls. I had a JR 421EX and it wasn't near enough radio for this airplane. I guess I could've flown it with the 421 and the OS .50 SX but I wanted to have this thing able to do anything it was able to do so bit the bullet and started building up the arsenal. I now have a better radio all around and am shopping for the 4-stroke as we speak. After the motor, I only need to switch from 4.8 volts to 6 volts to beef up what servos I have available, but those too will end up getting upgraded.
My present issue, Tower is having an up to $30 (on orders over $225) off sale right now. That means I could get an OS Surpass .91 II, brand spanking new for about $219.99!!! I know it's no Saito and it's a lot heavier, but! Why doesn't Tower sell Saito!!! I've never seen anyone (esp. Horizon) run sales like Tower does, so I doubt there is a way to get the Saito 82A new, for less than $254.99. I am not to inclined to buy a used engine, not that that there are any Saito 82's available!! Everyone who has one loves it and won't sell it. I'll keep looking, maybe a nicely treated, uncrashed, unflamed Saito might present itself. Heck, I might have to see if RCLEMENT still has that Saito 72 available. It might be fine for me for now. I know, I'll buy the Surpass for $219 and sell it on Ebay for list ($249) after the sale ends and buy the Saito. Nope, too much trouble!! I am so &*^# cheap!! RCLEMENT, still got that 72??? I might just bite!