ALYN FOUNDRY RLE HIT & MISS ENGINE Part 12+1 by Jason Ballamy Part 12 by Jason Ballamy five by Jason Ballamy

With the engine now proven to run it was time to think about how to mount it; I've done a few on wooded sleds and a few on 4-wheeled carts, so for a change I decided to do a two-wheeled ‘sack barrow’ type similar to what you see the IHC Tom Thumb mounted on.

The wheels seemed the obvious thing to start with. Some ERW tube provided the rims, some 16mm round bar the hubs and some 8mm S275 black bar was cut into circles and the spoke profile milled into them.

They were then silver soldered together after which the hub was bored out to final size which ensures the hole is true and concentric to the rim should anything have moved during soldering.
The axle bolsters were fabricated from some steel angle and rectangular bar, hub retailing collars turned from 16mm bar and the handle bent up from 5mm steel solid bar.
A box was needed for the ignition and battery so some maple was machined down to 4mm thick and the mill used to cut the finger joints
Who needs glue with a fit like this?
With the woodwork completed and some paint on the metal that is another one finished.

Still needs some tinkering to slow it down; it is making a lot of compression and really has a kick when it fires. Also want to get it picking up faster once the governor latches out.






















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