Armstrong Siddeley radial engine from an Avro Anson demonstration run at the "Cockpits North" event at Dumfries and Galloway aviation museum on 14th May 2023.
Very cool. You must have the "Battery of Death" To start that thing. You should design a huge Swamp Buggy around it, and install it. That would be awesome! It's so huge, but it doesn't weigh that much. Less than a Harley. You should build it to do say, 600hp. You would really have something there. Great engine!