Posting on behalf of an acquaintance So, this guy has a tank, that's right a 1951 tank, he's off in country NSW and the tank he's got has got a problem. The problem is with the Gyros which operate the turret, and the tech is (as you can imagine) ancient. He's looking for someone who might be able to build a replacement system for managing the gyros/turret. The turret operates on a metadyne, and is fully electric using 24v DC/150A. He has substantial documentation, so schematics, and descriptions of how it all works in stock form. If anyone is interested in taking this on (and potentially getting paid for your time) let me know, either by pm or in this thread, and I'll put you in touch with the tank guy. Shouldn't be rocket science, arduino (due or something) with a few gyros hooked up to relays etc.. If no one is interested, I'll think about taking it on myself.