Read all what I wrote again. I said an 10HP electric has an overload capability of 2.3 to 3.0 times it's nameplate capacity.Which will carry surge loads which will stall an 10HP diesel dead. A fan that requires 10HP to spin at rated rpms will spin at the same rpm with the same shaft torque. No matter the prime mover be gasoline, diesel, two stroke, four stroke, gas turbine. Electric series, compound,series/compound, induction, synchronous or repulsion start/induction run, three phase or single phase.Horses or hampsters So for surge capacity and engine life a 10HP electric gets replaced with a 15-30HP gas or diesel. Depends if it's a fan or a hammermill subjected to surge loads. If the fan portion of that dryer draws 10HP shaft HP while driven by the tractor at 1800rpm. Then that fan will operate just fine with a 10HP electric at 1740rpm. Which brings another factor into the equation, the square root and cube root rule with centrifugal fans etc. That dryer fan using 10HP to spin at 1800rpm will only use 9.3HP when turned at 1740rpm. We have all seen at shows a tractor loafing along driving a baker fan. Yet add a little throttle and try to increase the fan rpms 10%. The engine is now labouring flat out and can't make the extra 10% increase in rpms.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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