Greetings! Scott here. Long time stalker, first time poster. I am interested in building a beetle weight robot and I wish to use brushless dc motors to drive it. This will be my first beetle weight robot but I am under no illusions on the challenges I will face.

So anyway, my first point of call is finding a suitable motor. Around this forum I have seen forum I have seen Turnigy SK3 motors mentioned a few times. Im going to go ahead and assume that its a 2118 type? Probably these:
https://hobbyking.com/en_us/turnigy-...ner-motor.html

These seem a good choice and I do not doubt that these motors would be very capable at beetle weight. But there is this nagging voice in the back of my skull, which says "what would happen if I used more powerful motors?" There are definitely bigger BLDC motors out there that a beetle chassis could accommodate and I could still make a bot within weight limits if I used some. For an example, why not use these NTM 28-26 types:
https://hobbyking.com/en_us/ntm-prop...00kv-252w.html
Provided that I used these motors with a suitable gear box, I don't really see to much of a problem in using them.

I suppose that it maybe obvious that I am also interested in the latter motor due to its ridiculous price tag. However, I also aware of the old adage of "buy cheap buy twice". I would love to know peoples thoughts on this. As well as if im correct about my assumption that the SK3 I've link is one used in beetle weight.

Cheers