Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Hi,

An interesting project and I look forward to reading about its progress.  Bruce is right about trying to keep the weight down my Roadster weighs 2.24 kg very near 5 lb the three wheel version is a lot lighter at 1.74 kg about 3.8 lb.  Though their speed and ability to run continuously is about the same the lighter version certainly runs longer using the same amount of water.  Although there is independent springing on the front wheels it doesn't really allow the single driving wheel to reliably stay in contact with the ground other than on very flat floors.  If I modified one again I would look at fitting a solid front axle which was pivoted at its centre to allow the wheels to remain in contact the ground over reasonable undulations.

Take care.

Tony.