Re: Air driven prop
There are (used to be?) a couple manufactures of underwater scooters powered by steel-72s. The 72 is preferred over the al-80 because of buoyancy characteristic. One company was making an al-80 unit that would propel and you could breath off the same tank while tooling around. In an application like this, buoyancy at depletion may not be a bad thing, if you want to keep your scooter.
<br /><br />Given the endless array of pneumatic paraphernalia that is now available, I would think building a scooter wouldnt be that difficult. Propeller-size choice would be a stumper for me. Get your hands on an industrial catalog, something you can page thru and look at gismos for idea and compare specs. Try
www.mscdirect.com s Big Book. Its free and arrives USP in a couple of days. Grainer has a free catalog also, but not as big. Its a start. I think what you are after is called an air motor or pneumatic motor. <br /><br />Dont know what you need but comparing a couple air motors, <br /><br />2000rpm 0.1hp 6cfm of air at 20psi - $127.00<br /> 300rpm 0.1hp 20cfm of air at 20psi - $389.00<br /><br />Some local guy built an electric unit, strapped the battery to his chest and had his tank on his back. While tooling around with his scooter he came across Fluffy and chased her. Initially Fluffy went away, then stopped, turn, and came back and bit the guy. Fluffy chomped down on the tank and up on the battery
thats how big Fluffy was, one bite. They guy laughs and said he felt some pressure but otherwise, being attacked by a great white shark is no big deal. Im not sure chasing Fluffy was a good idea
its Darwinian, his days a numbered.<br /><br />I dont even know if this is the application you had in mind
chasing Fluffy.
