In a recent post about fitting up the Firestone R4-tech air assist rear suspension system one of the US Bros, Duane, mentioned that a 3 gal air tank with 120psi pressure would not even run a rattle gun long enough to remove one set of wheel nuts.
Now that the price of a decent 18V 1/2" impact driver gun has come down and even the cheaper guns are rated at 150 ft/lbs of torque, it would seem a better bet to go the electric tool set with suitable charge system and a spare battery.
Has anyone got any experiences/preferences one way or other?
I think most guys running on board air intend to use it for much more than just air tools. Most people with it typically have air bags and typically a train horn of some kind.
If you want to run air tools only and have no need to air down tires for trailing I would have to agree with you, air probably isn't your best bet. If you want to run air though and plan to use it for tools I would really suggest going with an EDC or an oasis compressor, preferably with a 5 gallon tank.