RCU Forums - View Single Post - Chosing a New Engine OS, Magnum, Thunder Tiger
Old 07-09-2012, 12:54 PM
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airraptor
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Default RE: Chosing a New Engine OS, Magnum, Thunder Tiger



Don't believe HP numbers ANY manufacturer publishes.
Even taken verbatim, the HP rating is usually made using a ridiculously high RPM number.
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X2. According to the OS numbers, the 46FX makes as much or more HP than a Saito FA91 & that's just plain ludecrous. I have an FA91 swinging a 15 X 4 Zinger @ 10,000 RPM on a 7# US Aircore Nighthawk . It will take off after a 50' roll W/less tha 1/4 throttle & then take it straight up when I nail the throttle. I don't think ANY 46 2-stroke would do that.
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telemaster you cant compair the 4 stroke engine to a two stroke in HP look at where the two compair the rpm at which the HP was produced. The 4S make more torgue so it will have a higher HP at a lower rpm yet the 4S will not make the same HP at the 16-17,000 rpm like the 2S.

All the engines are great. you can buy two of the magnums for the price of the OS. My thing is why settle on a 46 when the magnum 52 or OS 55 make more power almost a 1,000 RPM more than the 46 engines. they are almost the same price also.