Comments by "José Veinte Genario -NISU" (@joseveintegenario-nisu1928) on "The Only 9 Rotary Cars Ever Produced" video.

  1. Having a belt driven radiator cooling fan, behind radiator, working on the less dense, hot air from radiator, is a silly option. You won't find cars having cooling arranged this way today, the right way could be a thermostat controlled electric fan blowing air backwards to radiator. Blessings +
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  2. a- you should never race a Wankel RCE under no-load conditions, unless you want destroying it. b-The NSU Ro-80 engine had initially shaft lubrication problems, solved from 1972 on. Apex seals material, that in other Wankels was IKA, same as ordinary piston rings, was switched to ferrotic, solving the wear issue. Just one plug was considered enough. (You may like Kawasaki patent 3.848.574, 1974, available in Espacenet) c- A Porsche 914 having an NSU R0-80 engine installed in the place of the air-cooled flat-6, had a fuel economy of 11.7 lit/ 100 km, 115 HP DIN, of Unleaded gas, Rotary Engine works best with Gasohol, E10, vs 11 lit/ 100 km of super gas for the original Porsche engine 110 HP DIN, that used 1.5-2 lit of oil every 1000 km, versus 1 lit/ 1000 km for the Wankel engine, that as it burns a bit of oil inside working chamber, doesn't need oil changes, just adding oil to maintain level. For RCEs made before unleaded gas came in, the amount of oil in gasoline must be a bit higher, to compensate for the lack of solid lubricant action lead has. In small engines fed with mix, 3 to 4% oil in gas is suggested by users, Shell Rotella SAE 30 for middle weather, SAE 40 for hot weather. As a precautionary measure, even in cars having a dosing pump for oil, users suggest adding 1% Racing 2-Stroke oil directly to gasoline; also, as Mazda did in the 24 h de Le Mans winning car, an MoS2 organic salt additive adds safety and improves performance, for example: 1 cc LiquiMoly for each liter of gasoline or mix.
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