ORIGINAL: triumph 67
well after getting ready to run 3s on the hk100a a big puff of smoke came out not sure if the motor or esc took a dive the esc stiil works but the motor is chattering and doesnt want to go.
You sound like a burnout waiting to happen!! lol
Mine makes those funky sounds too usually when the front driveshafts are bent so check them out,, they bend back easily with a hammer once or twice
wouldnt mind seeing some video if you can 4s seems a lil much to me im happy with 2s