Pneumatic Pump

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Posted by Patrick Dingle at 2/8/2001 11:29 PM EST


Other on team #639, Red B^2, from Ithaca High School and Cornell University.



Does anyone know if it is okay to mount the pneumatic air pump upside-down? Someone on our team seems to think it's a bad idea.

Thanks
Patrick

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Posted by Andy Baker at 2/8/2001 11:44 PM EST


Engineer on team #45, TechnoKats, from Kokomo High School and Delphi Automotive Systems.


In Reply to: Pneumatic Pump
Posted by Patrick Dingle on 2/8/2001 11:29 PM EST:



I'm trying to think of why mounting it upside down would be wrong, but nothing comes to me know.

The only advice that the FPDA guys gave at the Pneumatic workshop during kickoff was to use the three shock absorbing mounts for the pump (the small cylinders with #10-32 threads sticking out of both ends).

I say try it both right-side-up and upside down and check the current draw during both mounting scenarios. If the current is the same, then you should have no problem.

Andy B.

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Posted by Rimple Bhakta at 2/9/2001 12:11 AM EST


Other on team #438, Gladiators, from Jack Yates High School and Mrs. Reagan Flowers.


In Reply to: Pneumatic Pump
Posted by Patrick Dingle on 2/8/2001 11:29 PM EST:



the pump can be mounted in any position as long as the filter and fan area can breathe

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Posted by Jim Meyer at 2/9/2001 8:09 AM EST


Engineer on team #67, HOT Team, from Huron Valley Schools and GM Milford Proving Ground.


In Reply to: Pneumatic Pump
Posted by Patrick Dingle on 2/8/2001 11:29 PM EST:



: Does anyone know if it is okay to mount the pneumatic air pump upside-down? Someone on our team seems to think it's a bad idea.

One thing the pneumatic guy at the Kickoff workshop mentioned was that mounting it sideways was not so good because of shear loads in the rubber isolators. Mounting the motor upside-down should not put more shear in the mounts but will load the mounts in tension instead of compression. Since rubber performs better in compression than in tension they may not be strong enough for this or they may be just fine. My guess is they would be fine.

If they're not you could try hanging it by 3 pieces of 1/2 long, or so, poly-cord. This may provide adequate vibration isolation but I don't know how the rules would treat this. I'm thinking string because our motor seems to shake side to side more than up & down. It's something to try anyway.

Hope this helps.