Peumatics or Motor?!?!?!?!

[CCCP]

go with the motors

[M'gnad-knockah]

the other downfall to pneumatics is the efficiency, pneumatics only have a 4% efficiency, which sucks because the compressor has to run, and waste battery power.

[IndySam]

Originally Posted by M'gnad-knockah

the other downfall to pneumatics is the efficiency, pneumatics only have a 4% efficiency, which sucks because the compressor has to run, and waste battery power.

where did you get that number?

[M'gnad-knockah]

its common knowledge

[EricH]

Originally Posted by M'gnad-knockah

its common knowledge

We don't know it here... Go look at the books again. (Or I know who to ask, when I am at competition.)

[dlavery]

Originally Posted by M'gnad-knockah

its common knowledge

Actually, without a citation and/or verifiable reference, it is nothing but a common made-up number. Sorry, but saying"pneumatics only have a 4% efficiency " is just not credible without providing more information to back up the statement. Facts are preferred over conjecture.

-dave



.

[Vikesrock]

Originally Posted by M'gnad-knockah

the other downfall to pneumatics is the efficiency, pneumatics only have a 4% efficiency, which sucks because the compressor has to run, and waste battery power.

Assuming this number is true, it needs more clarification. 4% efficiency in what sense? 4% of the potential in the compressed air is converted to kinetic in a moving cylinder? 4% of the electric potential to run the compressor is converted to potential stored in the tanks? 4% of the electric potential to run the compressor is converted to kinetic in a moving cylinder?

[Daniel_LaFleur]

Originally Posted by emo Sponge

if your arm sticks out you should use peumatics
if it does not use a motor
peumatics are not realy safe

What makes you think that motors are safer than pneumatics?

Both can generate a lot of force and a lot of momentum. Both can be made safe, and both can be very dangerous if used incorrectly.

To Sam2197,

both pneumatics and motors can be used equally effective. If you already have pneumatics in your design then adding a cylinder is far less weight than a gearbox and motor ... but if you dont have pneumatics already in your system then the compressor alone may weigh more than using a motor and gearbox.

In short ... it depends

Good luck and let us know what you used.

[Sam2197]

currely i have two designs one using pneumatics and one without. i really think we will need more than just those two positions though so i think we will need a motor for this. thanks for the help everyone