Ultimate Flexible Drive Shaft
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Uploader Comments (low6road)
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All Comments (29)
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id like to design a flying contraption in a y pattern tricopter using flexible shafts that can rotate the pitch controlled props.
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Any idea when it will be available?
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what kind of pressure will those...hydraulic potentiometers(?) tolerate safely?
what kind of torque does that translate to?
what kind of efficiency can it offer?
would you be able to build it with a reduction system for torque/speed amplification?
can it be easily plumbed differently(like with just one valve) to offer counter-rotating and regular rotating heads?
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Wow, thats awsome! How much torque can it handle? There must be a lot of applications where that kind of drive shaft is usable!
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What's the efficensy?
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The hoses limit the pressure. Could be 3,000 psi, or a lot more.
Torque at this size around 40 pound-feet.
Efficiency depends on a lot of factors, like operating speed, hose diameters etc, but it should be OK because there are no fluid losses.
There have been attempts to change speed/torque, but those mechanisms use cams, so it's difficult to make them compact and efficient. It's probably simpler to use a gears outside the motor.
Reversal only needs a simple crossover valve.
low6road 11 months ago
Is this really a new invention?
It looks like two hydraulic motors--the type that can also be used as a pump-- with fittings, in a configuration that is effective to produce this result.
Is there something REALLY novel to the design? Or, is it just a really nice, elegant design utilizing existing technology?
ericsbraun 1 year ago
@ericsbraun
Yes. Quite new. The end units are not hydraulic pump/motors. Hydraulic pump/motors have valves to direct the flow of fluid. There are no valves in the end units.
Each end unit has three cylinders and pistons, and a mechanism to translate the piston motion into rotary shaft motion. That's all there is to it.
low6road 1 year ago
how can you get those (hydraulic pumps is basically all the are) to i guess you could say "grab" so good?
MrBrey1 1 year ago
@MrBrey1 They are not hydraulic pumps. There are no valves, so there is no fluid leakage.
low6road 1 year ago