I would really appreciate an episode that goes over picking a motor, specifically from hobbykings.com site. How do you go about picking a motor when you know you need 700w of power, just as an example.
This is what i had done (just did it actually):
The motor is for an "ordinary" plane, not a really slow flyer or a fast (jet).
If I want 700 W a can get something for a 3 cell Lipo with about 70 Amp or something for a 4 cell Lipo coming down to 50A - (lower amps are normally preferred).
I need a motor for about 700W
I need a controller for minimum 50 A and more if i want 3 cells.
I need a battery .... I want to fly 10 minutes but not on max power. 3000 mAh 4 cell will give enough at 20C but i want to fly in the winter so i choose 40C.
I go to HK and brushless motors by sice 46 and larger.
What to choose? I am a light flyer so i sort by weight and find The 480G as a possible choice - but slightly big with 1000 W
Go back to outrunner by size - 15-40
Check the first one - Donkey 194 grams with 680W 11*5 prop.
Limited to front mounting and need a collet adapter.
Next down in the list is Turnigy 3542 130 grams with 1250 KV and 8*6e prop giving 800W according to Frank´s review
OK my plane is a light combat/pylon trainer so i choose the Turnigy. If i had a high wing trainer/cub the choice would have been the Donkey with lower revs and bigger prop. Both are about the size i wanted. The Turnigy can be mounted in front of or behind the fire wall and comes with a collet adapter.
The controller :
40-79 Amps will be something to go from.
The first is the red brick - it will be fine. 5A bec will be more than needed for my small plane.
But i have a lot of Turnigy Plush that have worked perfect for me many years.
The 60A will also be a good choice. 3A bec is perfect but for my combat/pylon trainer i will get the red brick.
The battery:
Well - after many years and a lot of batteries i go directly to the nanotech and select 4 cell.
the size already selected give me a 4 cell 3300 mAh battery for 42 dollars - expensive.
An alternative could be the Zippy Flightmax 4s1p 40C for 29 dollars.
I need 4 mm bullet plugs to the controller.
http://www.hobbyking.com/hobbyking/store/__9283__HXT_4mm_Gold_Connector_w_Protector_10pcs_set_.html
I need some shrink tube and soldering help to finish the job.
Some propellers according to the reviews. This is a lot of power - i do not want any slow fly or GWS props to this motor.
This is just one of many possible ways to select a working motor-esc-battery.