Compound Gear
Compound Gear
(OP)
How much is the maximum RPM that have been ever achieved by the using of sequence of compound gears.
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RE: Compound Gear
John R. Baker, P.E. (ret)
EX-Product 'Evangelist'
Irvine, CA
Siemens PLM:
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RE: Compound Gear
The centrifugal supercharger on a Kawasaki H2 motorcycle drives the supercharger at 9.2 times crankshaft speed, and max crankshaft speed is 13,000 rpm, so supercharger rpm would be 120,000 rpm under those conditions. The final output stage is a planetary-geared speed increaser with an 8:1 speed ratio.
RE: Compound Gear
The guys that built it said that they tested one with ~250k rpm output, but it too bulky and ran hot.
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P.E. Metallurgy, Plymouth Tube
RE: Compound Gear
You'll also find that if you do the math, the speed is directly limited by contact velocities. There's an upper limit based on gear material.