Plumber/welder/mechanic/electrician, and a few other things I've picked up over the past 65+ years of tinkering with things! I build my own run stands from square steel tubing and angle iron, plus whatever's handy in the scrap iron stash! Somewhere WAY down the project list is an engine dyno setup on a trailer that I can drag around to various car shows and other events to draw a crowd, and maybe demonstrate a few of my Rube Goldberg modifications! I'm thinking of using a radiator from a Peterbilt, Kenworth, freightliner, etc. to cool down the water the dyno uses as a brake medium. I'll use a 4 foot diameter shop fan and a portable generator to blow lots of air over it.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!