Hi Vic, I decided before I bought the kit to go with twin 80mm EDFs (w/80 amp ESCs, recovered from a couple of FreeWing T-33s). Just the extra weight of the plywood for the swing wing mechanism told me to go larger. Of course, I’ve already built and flown the F-18 and F-4 on twin 70mm EDF power, which seemed ‘just right’ 😁. The Tomcat is bigger and heavier, so 80s seems right.With a 6000 mAh 6S pack, I have my timer set to 3.5 min of usable throttle time. I start my landing with 1 minute left, that way if I have to go around I still have some juice left in the tank so to speak. With my existing power system I find that I'm at max throttle throughout most of the flight. I have to do some creative wing mixing to get the plane to roll, and I have not had the courage to try a loop...don't feel like I have enough power to do it. The power system I'm using was pulled from an old Su-30 that I "refurbished" but its giving me the same flight times as the one John Overstreet recommends in the Flite Test store (I have that power system in my F-18 MS, lighter airframe better performance).
I've been experimenting with other battery packs:
1. 4.35 volts/cell HV packs from SMC racing give better power with similar flight time
2. 9000mAh packs - longer flights (4-5minutes usable throttle) but flies heavy
I'm thinking on my next build to have twin 80mm EDFs on 100Amp ESC using 2x6S 5000 mAh batteries. I'll use the same landing gear, reinforce the battery tray for 2 batteries. I'm confident the air frame can handle it.