In addition to motorcycle production Triumph Engineering Co Ltd also made twin cylinder generator sets for the RAF.
below,hand cart version.
below,operators hand book.
below,post war the head and barrels were used on the Trophy models up to 1949,also the grand prix racing model.
New about the engines, when I worked for TC Motorcycles in Harborne, Birmingham in the 80's, they had NOS engines, they could be adapted for motorcycle use (remember the little treaded bosses on the fins for the cooling shroud), and we sold a lot of that stuff, but never seen the handcart version.