At the 2 minute mark in the following video the throttle and reversing lever are moved and you can see how this engine responds: https://www.youtube.com/watch?v=AcU7dOx541c
P.S. I am also posting this because this steamboater's youtube channel has less then 10 subscribers as of this writing, I'm sure he would appreciate a little more attention because he obviously put a lot of effort into putting this launch together.
Last edited by cyberbadger on Thu Jan 27, 2022 1:26 pm, edited 1 time in total.
This looks like a Marshall gear driving rocker arms w/ valves at the ends of the engine, I'd guess to reduce length. The purpose for the two rocker arms/cylinder, slightly out of phase, is perhaps a riding cut-off. Note the integral flat plate heat exchangers as well. A very neat piece of design, very compact.
Thanks for posting these links. It looks an interesting vessel. I need to look at the videos with the sound on (I don't do sound on the laptop) and see what we can learn from that.
On closer look, I'm not sure this is a marshall geared engine. I don't see the linkages of a marshall valvegear, it looks like the valve motion may ride in a straight slotted link cut into the round bar, in a way similar to a hackworth.
I was wondering if anyone can identify the valve gear, or perhaps describe the operation of this engine.
