ENGINE THRUST RIG

Keith Beaumont describes his rig for comparing the static thrust of model internal combustion engines

words & photos » Keith Beaumont

I enjoy making and refurbishing model IC engines. To me, it takes a lot to beat the sound of a recently completed engine starting for the first time, or after the re-build of a classic engine that probably has not been used for some 40 years. My model flying days are long gone, so all my engines are ‘test bed’ items. My standard procedure with a new engine, after initial start-up, is to go through the run-in procedure, then try it with different propellers and settings, while recording the RPM for each setting. After about a total run time of an hour, I find my interest for that engine tapers off and I then clean it up and mount it on a stand for display. Some years ago, at an…

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RCM&E (Digital) - 1 Issue, October 2022

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