Air Powered vehicle/ cart ideas

[centor]

I have to use a small air receiver to build a wheeled vehicle that will be operated by compressed air. The goal is to build the vehicle that can travel in a straight line, towing a standard load (about 3-4 lbs), on one charge of 90 psi in the receiver.The volume of the receiver is 16 cu in. I cant use any air or electric motors. But I can use cylinders.

 

What are some good ideas to accomplish this?

 

I was thinking of using a crank shaft mechanism with the cylinder. How can I make the most out of 90 psi of pressure.

Edited September 17, 2011 by centor

[insane_alien]

90psi isn't a quantity of air, it is a pressure.

 

it will give you 620.5J per litre of air.

 

the number of strokes you get out of your engine will depend on how much air you use, not the pressure.

[centor]

90psi isn't a quantity of air, it is a pressure.

 

it will give you 620.5J per litre of air.

 

the number of strokes you get out of your engine will depend on how much air you use, not the pressure.

 

thanks, i will fix that in the post.

[CaptainPanic]

I am confused: you can't use an "air or electric motor" (but is an air motor something different from a pneumatic motor?)

And then you say you can use cylinders - but those are part of a linear pneumatic motor.

 

A pneumatic motor is essentially just a tool to convert the energy contained by compressed air into a movement.

Edited September 19, 2011 by CaptainPanic

[centor]

I am confused: you can't use an "air or electric motor" (but is an air motor something different from a pneumatic motor?)

And then you say you can use cylinders - but those are part of a linear pneumatic motor.

 

A pneumatic motor is essentially just a tool to convert the energy contained by compressed air into a movement.

 

Cant cylinders be used without using pneumatic motor?

[CaptainPanic]

Cant cylinders be used without using pneumatic motor?

What do you mean by a cylinder? A piston (like in an engine)? Or just a pipe (like an exhaust)?

[Pantaz]

Just off the top of my head, one double-acting cylinder operating a crankshaft would get the job done. Timing might be a little tricky -- pneumatics don't exactly react instantaneously.