quote Garry in Tampa:
There were 8 different Lightfour models built. I haven’t located the reversing model, but this is the heavy duty model
for a 20" transom. The Navy had a bunch of reversing models they used to ferry cargo to shore where there was no dock.
They were set up for a 30" barge transom.
Garry. I actually had one of these. That gearcase is huge.
During the war, Zephyrs and standard Light Fours were used for rafts. The one like Garry posted here, is a barge motor, like he said. A lot of Big Four series motors were used as well.