Double Barrel… your a madman! Love it!
Do you know the current during operation of these? what ESC did you use? and did you have water cooling for ESC’s?
ESCs are a challenge. They must be water-cooled in some way, shape or form… and its worth spending $300 on a 300-500A ESC as everything will be built for high current, and when we run our 80A- 135A through ESC it runs very cool and efficient.
Side note on motors in case this info helps?
A motor only has so much torque because of their size and design. the TP 5670 models almost all carry the same overall torque, just the RPMS are different. If you run it on 6S, 10S, or 12S it will still only turn a propeller or in this case an impeller the same speed as the torque will be maxed out at 4500- 6500 RRM roughly is my guess as I have tested with 80mm also.
The higher the KV, the more sensitive the throttle response will be for controlling RPM and feathering the throttle when riding. Technically from my understanding and experience, you could use a 250kv motor of that same TP motor and end up with the same RPM/Thrust, and use lower current, plus your throttle response will be nicer to feather.
Using a lower KV motor gives you more torque per Amp. Example: TP5670 554KV will draw 130A when torque is maxed, vs the 394kv will have max draw of 93A. Both will give you the same end torque and RPM, and ESC will run much cooler at 93A vs 130A. Hope this makes is making sense to someone
That particular TP motor is nearly identical to SSS 500kv/360kv design and torque I think, and TP stats show it should have 1.8Nm in mechanical torque after the loss of efficiency that DC brushless motors have. I have SSS 500 at 1.9Nm, 360kv at 2.1Nm. Im about to be testing a new motor that has 56mm diameter and is a little longer and has 3.1Nm which is a lot more torque, Ill share results here once I test it in a few weeks.