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The Basement
Help with 12V air compressor, please.
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<blockquote data-quote="Royce Covington" data-source="post: 24327" data-attributes="member: 346"><p>Re: Help with 12V air compressor, please.</p><p></p><p></p><p> </p><p> </p><p>the vacuum is measured in pascals, or more crudely inHg (inches of mercury) rather than psi.</p><p> </p><p>achieving a 29 inHg vacuum is fairly easy, but i would think the pump and measurement equipment to effectively achieve the vacuum-pressure necessary to transfer the helium from the balloon to the tank would far outweigh the savings. also, i believe the result would be an equalised pressure considerably less than that of the balloon.</p><p> </p><p>thinking back to the use of the vehicle, you can install a compressor (like an a/c compressor) which will run off of engine power. tire service trucks often use them, but i imagine they'd only be capable of <150psi.</p><p> </p><p>R~</p><p> </p><p> </p><p>found 'em:</p><p><a href="http://www.vmac.ca/index.php?underhood" target="_blank">http://www.vmac.ca/index.php?underhood</a></p><p><a href="http://www.vanair.com/underdecks-c-4_152.html" target="_blank">http://www.vanair.com/underdecks-c-4_152.html</a></p></blockquote><p></p>
[QUOTE="Royce Covington, post: 24327, member: 346"] Re: Help with 12V air compressor, please. the vacuum is measured in pascals, or more crudely inHg (inches of mercury) rather than psi. achieving a 29 inHg vacuum is fairly easy, but i would think the pump and measurement equipment to effectively achieve the vacuum-pressure necessary to transfer the helium from the balloon to the tank would far outweigh the savings. also, i believe the result would be an equalised pressure considerably less than that of the balloon. thinking back to the use of the vehicle, you can install a compressor (like an a/c compressor) which will run off of engine power. tire service trucks often use them, but i imagine they'd only be capable of <150psi. R~ found 'em: [URL]http://www.vmac.ca/index.php?underhood[/URL] [URL]http://www.vanair.com/underdecks-c-4_152.html[/URL] [/QUOTE]
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