yeah I imagine getting it to idle at 500-600RPM would require an insanely oversized and out-of-scale flywheel that would never fit inside that bellhousing. Either that or it would have to be made out of something like tungsten or depleted uranium.Kenny, you are right about the laws of physics, scale and speed. Designing a model engine, you can work to the SAME piston max speed (to do with rings rubbing bores) as a full sized engines, but at 1/10th scale the engine is running 10 x faster. See what I mean?
Also, to get the SAME pressures and combustion flame speed in the combustion chamber... which affects idle running. Cam timing, ignition timing, flywheel mass, etc. all have an influence, and some modellers tweak the "tune" of the engine to slow them down. But that moves away from "exact" scaling...
But there are dozens of factors, some linear, some square and some cube - that screw-up scale engines working exactly like full sized ones. e.g. the 100th of the power, but 1/10th of the friction for a 1/10th scale engine: Yes, the laws of physics apply, but also the laws of mathematics (squares, cubes, etc.).
But I agree it is a fantastic model!
At the risk af adding mud:What many people forget is the valves don't start to lift until all the valve lash is out of the valve train.