Trying to sort through motors this morning. The selections so far are
MK 3538 ($93, US market)
Axi 2814/22 ($130)
Pulso 2814/22 ($65)
Avroto 28-14/11 ($50)
All the motors are 350 watt motors with Kv ratings in the 770 range. Kv is the rpm's per volt of power applied. A higher Kv motor will turn faster which isn't necessarily good for multi-rotors.
If I go with the MK speed controllers (BL's in MK-speak), I'm current limited to approximately 40A but the motors above all list 22 to 25 amps as their max so that's fine.
Has anyone investigated the possibility of even bigger motors for their heavy lifters? Maybe the Pulso 2826/14 (545 watts, 760 kv)? With the bigger motors comes the possibility that the BL's will run hotter and maybe fail sooner but if the weight stays the same then the motors should run at the same current load making the BL's safe for the job. So why go with bigger motors in the first place?
This whole process of building an MK without just buying the kit is to go through these decisions so we can all maybe learn something so let's hear what the gurus have to say on motor selections.
I plan to put my current camera mount and camera (MKTR mount, Canon T2i camera) on this new frame and maybe use the extra lift to carry a third (and fourth??) 5000 mah battery. In other words, I like my camera but I want longer flights and I don't want to be at the limit of my carrying ability as I am now with my stock Okto II. I could just re-motor my Okto II since the BL's can easily handle more current but I also want a second Okto as a backup since I'm operating a business and canceling flights turns happy customers
into mad customers.
Future use of the heavy lifter is to carry a heavier camera mount and possibly a Canon 5D Mk II if I am ever asked to do so (weddings, advertising, etc.) so larger motors/ESC's now will meet that goal later.
Anyone want to chime in?