I have been flying electric planes for about 2 years or so. I am mechanically inclined and I tend to grasp things pretty quickly. However, when it comes to swapping out electric motors and ESC's and figuring watts, amps, and canooter valve settings, Im lost as lost can be.

That being said, I really dont want long complicated answers to the following questions. If you have links that explain the quantum physics of proper motor/esc/prop/plane combinations just post them and I will stuff my cranium later.

I have two planes in need of service.
1- Elfite Apprentice. This was my first plane and I still like flying it. Last spring I took a chance and flew with low transmitter batteries and now Im paying for it. Ive had one stock replacement motor because the bell cracked after a particularly hairy landing in a cross wind. The latest (and only the second real "crash") has repeated this injury. I went on HK and found a motor that I thought was a suitable replacement. I looked at the max amp draw and it said that it maxed at 32amps. The Apprentice has a 30-35a ESC so I thought I had a match. I bought the Turnigy G25. After receiving it I looked over the specs and in small print I see that it requires a 50a ESC. " Sigh." Can I use this motor in my Apprentice? If so, what modifications do I need to make to make it work?

2- I also own a Parkzone T-28. This poor thing has had a bad, bad, bad season. THe first thing that happened was that one of the battery leads wasn't soldered very well and mid flight, low, and fast, it died and crashed. It was a total dead stick. The entire front end snapped off, the wing mount broke, and the fuselage cracked here and there. I was able to to use epoxy and put the T-28 back together and make a plane of it again. She flew wonderfully. I was very proud, as it was my first major repair job. Then, another battery malfunctions. One of the balancing leads came loose from the battery and I dont know what it did but the ESC shut down and another dead stick. Luckily, it powered back up and I was able to drift it back down to land. Both batteries have been repaired, all structural damage repaired, and she went out for mid evening flight. The sun was low, the air was slightly cool with not the slightest breeze. I hand launched the T-28 and she cruised out to treetop level at WOT and I snapped her into a loop, like Ive done a million times, and it did a lazy sideways loop instead. It lost speed, and altitude, and must have gone into somewhat of a stall because control response was mushy. She rolled into a power line and hung off the vertical stab for a moment before dropping straight down. Now my T-28 motor is cracked and burned up. I have scoured the web and I cannot find a single post or forum that clearly explains what motor I can swap into the T-28. Im sure that to some it made sense, but it was greek to me. I do understand it depends drasticaly on how I want to fly the plane. I honestly wouldn't mind a little hotter flying but not red hot. What do I need to do to make this thing fly again?

I almost just want to rip the guts out of both planes, sell what I can, and buy something new.