I'm 62 years strong, with 15" 'guns' - I stay fit. Retired professional with electronics, RF experience. Computers (I build 'em), house wiring, ALL kinds of mechanical and electrical design and repair experience. I calibrated pressure instruments, mass weights from 1mg to 50lbs, I have the 'magic touch' when it comes to fixing things. My current project nearly complete - a 14speed mountain bike, stationary standing car alternator DC generator to run a 1200W inverter; with the gearing I should be able to pump out 300wh, or 25A....now where did I put that battery - lol :^)|