Chaps
I cheat and use a cordless Milwaukee impact gun with 650Nm of torque it does not matter if I use the 1/2 inch drive it come with or an adaptor to 3/4 as long as they are impact gun material since the chrome vanadium type can explode into shrapnel. I no longer need a 10 feet scaffold pole to losen crank nuts rusted in place over 30 years.
Eric
Mrs Hawk bought me a new trolley jack a few years ago and it came with 12v impact gun. Expecting it to be a POS I just stored it in one of my cabinets - only to dig it our when trying to undo a stubborn sprocket nut on a motorcycle. And it's bloody brilliant.
I power it from a battery booster pack and it hasn't failed (yet) to shift a nut. They only cost about £30 which is lots cheaper than a decent breaker bar.
