If you want the easy way out, I love my eflight alpha 450 sport. Its floatie, light (under 2lbs with battery) and has a 48" wingspan. Setting it next to my dad's .40 trainer, it about 5" less wingspan, and 1/3 the weight. I can also get 20-30 minutes of flight time on a 3 cell 1800mah battery.
Part of what makes the electrics perform so much better, and handle crashes better, is how much lighter they are built. The nitro's and gas planes vibrate the plane to death compared to electrics, so they are built much heavier.
If your mount or standoff is adjustable, I would mount it with 2-4 degree's down thrust, and leave the right/left angle alone, then see how you like it and go from there. Another thing to consider, gas planes are generally built with a nose gas tank, which gets lighter as the plane fly's. You could end up quite tail heavy if he plane isn't ballanced properly. I personally don't believe in adding lead to a plane, so if I'm too nose heavy/light, I'll move up or down a couple sizes in battery, or move componants around to achieve a better weight ballance, rather then add lead.
I am new to flying R/C planes, I have been flying for about four months now.
Recently I have purchased a Nitro trainer from a club member.
I am in the proses of converting to electric, I have a Hobbyking ESC 40-50A with a Turnigy G25 870Kv motor.
All of that aside, I have no clue how to mount this motor to this plane. I have tried to read about the angles etc., but is so confused.
I went to a local hobby shop and purchased a "standoff" mount.
Help would be appreciated
Hard to tell from the photo. Does that motor have an "X" shaped mounting bracket on the motors backside? If so, take a run to your local well stocked hardware store, and buy a pile of nylon spacers, perhaps 1/2 inch in diameter. These nylon spacers need to be long enough to allow the prop to clear the front of your fuselabe. Also buy some 6-32 or 8-32 screws with locking type nuts (the type with the nylon insert.) Drill the firewall holes to match the "X" backplate, and using the screws, nylon spacers and backplate, bolt everything together.
I've used this type of setup up to and including 2500 Watt Hacker motors with out any sort of problems.
Retired and the days are just too short, busier than ever!
A trainer with a high lift wing will pitch up with speed. I think this is much less critical on an electric motor though.
I trim my plane in with motor off gliding level. My alpha 450 sport pitches up with speed, even without throttle, like in a dive. I think this might be the elevator or wing incidence being a bit off though. I personallly have run 0 offset on my planes and like it that way. On my slow stick, right/left thrust made little to no differance. Down thrust made some, and up did more so. But if you know what to expect and your not doing any high speed or percision flying, I don't think it matters.