Hi K2, that's a nice idea, I like the method. I will have a go. Best regards, NigelHi Glue-it. All you need do now is dip it (cold) into hot wax (melted candles) to give it an extra 1/16in. overall, than make a plaster mold and cast an aluminium, or zinc/mazac, or resin, pattern that you can keep for making "cast-copies" when you need them in future! Flywheels (being "precision located mass") don't need to be Cast Iron or Brass, but just a dense material - like Mazac (from scrap castings from car scrap-yards) does a good job at a lower melting point when making castings. - Looks like steel (grey) when finish machined. After making a pattern, the wax on your nice machined part can easily be broken of and cleaned with spirit before painting.
Thanks Pete, at the moment though it is just an outline. I'm sidetracked by the vertical boiler at the moment as I have to understand the boiler thoroughly to enable me to get to the next level of design.Your Burrell compares to a Mamod in the same way that a Brough Superior compares to a Chinese moped.
I hope you have just put the rear wheels on for the photo as they are the wrong way round. The strakes should lead on the inside of the wheel.Someone (not sure who now) asked me how this 1/20th scale Burrell compares to a Mamod. Some pictures comparing it to the Mamod steam wagon
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Makes me realise how much work I still have left to do.