Another smoking part

[weave]

Well it seems you got everything under control.

 

[KyleRC]

If I was going to buy any of the JX servos it would be the PDI-6221MG before the 6113mg, why pay $23 for a 13kg servo when you can get a 20kg servo for $12? https://www.banggood.com/JX-PDI-622...tail-top-buytogether-auto__1&cur_warehouse=CN

6113mg specs
Operating Speed: (4.8V) 0.125sec/60°
Operating Speed: (6V) 0.103sec/60°
Stall Torque: (4.8V) 11.53 kg.cm
Stall Torque: (6V) 13.83kg.cm

6221mg specs
Operating Speed (4.8V): 0.18 sec/60°
Operating Speed (6V): 0.16 sec/60°
Stall Torque (4.8V): 17.25 kg.cm (239.55oz/in)
Stall Torque (6V): 20.32 kg-cm (281.89 oz/in)

For bashing torque > speed.

Because every 6221mg I had fried within a few months upon diassembly I checked the oversized brushed motor and every time it’s the brushes they fry right off. Truth is some brushed motors do not like to switch directions suddenly, repeatedly. I recommended the 6113mg because it has always seemed to be more cost effective in the long run.

The 6221mg motor appeared to have too much mass in the rotor for the small brushes to handle and in the design there didn’t seem to be vary much effort in cooling those brushes.

That is my reasoning on this and I guess if I didn’t get any points across...well $10-$20 may add up to more than the $23 I spent on one of my 6113mg last year, pretty quickly every month.
Hope this helps