| http://www.w3.org/ns/prov#value | - If you pull the power allthe way back on a radial engine - carefully, it issupercharged after all - and let the prop drive theengine, there is a danger that there will be a lackof lubrication in the main bearing.I have around fifteen thousand hours on radial engines and about forty years working on them as a mechanic.All the radial engines I flew had direct drive oil pumps and as such the oil pres
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