Well a little craigslist search the other day brought me home a hydraulic boom crane for a truck bed. (For future M35a2 fun)
A little rusty but a pressure wash and some paint and in the spring along with some new lines for one of the cylinders,
and it will be up and running other than the ancient Tecumseh engine that was running the pump.
Now its a vertical shaft and the engine looked to be about a 8hp there wasn't a data tag to I cant know for sure.( I've never seen a electric start motor less than 8hp atleast in vertical shaft)
But I have a 12hp B&S with electric start, That I can put on it. It has a longer out put shaft than the tecumseh
so it will right a littler higher in the mount enough room for a pulley for a alternator to run worklights on the boom and charge the battery.
Down side I would have to take apart the pump to put on a new belt and it would be a small belt.
So I was thinking #35 roller chain to drive the alternator I have tons of sprockets and chain lasts forever, Now I haven't seen any applications where i've seen roller chain driving a alternator anybody think of any problems? Only thing I could think of is noise vs belt.
Pictures and drawing tomorrow must sleep.