Water skier 16
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Could someone please provide me with the formulas for working out speed ratio and torque ratio of gears. Google brings up so much crap.
James
James
- Thread starter Water skier 16
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Luke
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Divide the input speed by the ratio to get output speed - 1000 rpm into a 5:1 gear set will have 200 rpm output.
Multiply the torque, but include a factor for efficiency - 5 Nm in to a 5:1 ratio would give 25 Nm output torque, assuming 100% efficiency. Depending on the gearbox, gear type etc, you might be looking at anything between 60% and 98% efficiency for example.
5Nm through 5:1 with 85% efficiency = 5 x 5 x 0.85 = 21.25 Nm.
In practice, efficiency will likely vary with speed.
Multiply the torque, but include a factor for efficiency - 5 Nm in to a 5:1 ratio would give 25 Nm output torque, assuming 100% efficiency. Depending on the gearbox, gear type etc, you might be looking at anything between 60% and 98% efficiency for example.
5Nm through 5:1 with 85% efficiency = 5 x 5 x 0.85 = 21.25 Nm.
In practice, efficiency will likely vary with speed.
BrokenBiker
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yeah, what he said ^^^^^^ 
beat me to it
but thats probably due to not seeing this till now lol
beat me to it
but thats probably due to not seeing this till now lol
