So team shock dabbled with with brushless for our heavyweight spinner...so learn from our mistakes ! For 1st time users forget brushless...we wasted £400 on HK flux Escs - which fell over just by looking at it and a 6.6kw brushless which should have done the job. But we geared it all wrong...as everyone has said starting torque is rubbish. Get a big old brushed motor and solenoid and it just works..we got lots of advice after our brushless failed. Brushed was heavier setup for sure but for 1st time heavyweight don't mess about is my advice. We also looked at winch motor and we almost went this route. I spoke to a great winch company I got off eBay and they could have supplied a decent looking motor with a usable shaft at about 4hp but Rpm was around 1400rpm at 24v. And weight was ilighter than A LEM 170 which was how we went in the end. they did sell me 600a solenoid for about £35 and that worked faultless. Brushless ESCs at this power required are tricky to get hold of. I think brushless for heavies are still in infancy and only good for advanced teams who have deep pockets !!! Hope this helps.