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Update in the original post. In short, KDE's specs are nonsense. Their motor has a lot going for it and is probably the one I will use. But it doesn't perform even close to their claims.

The odds of me ever doing commercial work dropped to zero if this is true. Here is what will happen: A few big companies will dominate the space because no small business could afford the entry cost. At the low end people will just operate illegally. This is what excessive regulation does. It...

We need a head-to-head comparison of the Ronin M and the Gremsy H6. Both look like great options. But, with DJI's price being $800 lower the H6 would have to be substantially better to demand the premium price. Just superficially and without trying either one I'm not sure how the H6 can compete...

As for Inspire vs. P3 -- I bought the Inspire before the P3 was announced. I'm happy with it, and with the wind we get at the farm it's going to fly/hold better than the P3. But, unless you need the additional speed or power I would go with the P3 -- much more value for the money. It may be that...

I agree with everyone here. The Inspire (and now the P3) are over the "good enough" bar for many purposes. But, for the photographer in me, and for my own uses, I still want to be able to get the GH4 or a Blackmagic in the air. I don't have the commercial experience to know, but I do believe...

@SleepyC -- do us all a big favor and buy one to compare to the Gremsy!

I would never buy a DJI product based on future firmware promises. But for $1,399 -- wow. That will put the hurt on the competition for sure.

No gimbal is perfect. The horizon is an issue, but I'm just about convinced that is unsolvable without onboard GPS and/or integration with the flight controller (and even then just better, not perfect). What I like about your design is what appears to be easy adjustment and very solid...

I can't say I've seen everything, but so far this is looking like the best CP / Alexmos gimbal out there for the GH4 and smaller range. Great work!

Your experience has definitely influenced my thinking. It is just terrific to have a specialist in bearings posting here. Thanks a lot.

Yes, it's a 16-inch limit on the props with the 950mm Z arms.

I ordered the folding "black widow" X8 frame with the quick latches (all 4 arms are "mantis"). Also a quick release set of retracts. This thing should travel well. Will do a full writeup of the build. But first I need to get this motor issue solved...

Aiming at around 12kg, with room to go to maybe 14 or so. No firm decisions yet. For a while now I've wanted a compact X8 with lots of lift and relatively high RPM to really handle the wind. That's the motivation for my leaning toward high rpm motors with relatively small props. Having said...

I guess I don't understand how the ESCs could be undersized if (a) KDE says to use them, and (b) KDE says the motors pull, at most, 823 watts / 37A at 6s with a 15 x 5 prop, and (c) the ESC is rated to 2S - 8S, 55A+, and 1,630 watts. I would be pulling, at most, about half the watts and...

My concern is this: If I can't trust KDE to spec a correct ESC for their own motor, particularly when my intended use is at the low end of the operating current range, then I wonder whether I can trust anything they say. Take your point above about bearing life vs. T-Motor. That's a very complex...

I have had good luck purchasing T-Motor stuff from readymaderc.com.

I saw his thread on the power consumption. I would run 15-inch props with these motors (he had heat issues with 18" props). According to KDE's specs the 4215XF-465 motor with a 15 x 5 prop maxes out at about 825 watts (37A) at 6S. KDE recommends their 55A+ ESC for this motor. Given all of that...

I understand completely.

I will follow up with a head-to-head comparison of the KDE 4215XF-465 and T-Motor U7-490. I will order the recommended ESCs for each as well (KDE 55A+, and T-Motor T80A), and compare performance with the 15-inch folding props.

I am in the early stages of building a copter to lift my MōVI M5. With solid knowledge of the weight of the M5 and cameras I plan to fly, as well as a general idea of all-up weight, I have started to look at motors. This is a description of that process and what I have concluded so far. This...