If you’re in pretty good shape, you can generate around 150 ft-lbs of torque with a reasonably-short wrench. But what if you need more? Stanley-Proto’s torque multipliers employ a three-stage planetary gear system to turn your measly 150 ft-lbs into a whopping 8,000 ft-lbs. Holy crap, that’s a lot of grunt.
Think of this as a mechanical impact wrench without the wrench. The gearing system stores up the energy you put in, then drops it out all at once. A “three-position anti-backlash device” keeps the wrench from hammering your arms as hard as it’s hammering the (very large) fastener, and its input and output side accept 1-1/2″ sockets/drives.
What’s the down side, you ask? Price. We couldn’t even find pricing for the 8,000 ft-lb model (pictured), but this should give you an idea: the 5,000 ft-lb model runs $6,000. (OK, Amazon actually has it for $5,923.50, but who’s counting?) The J6202A (750 ft-lb) is more reasonable and a few bucks shy of $500.
But it sure is cool.