Subject:
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Re: SSClagorpion - Compressor
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Newsgroups:
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lugnet.technic
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Date:
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Sun, 1 Aug 2004 03:10:25 GMT
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Viewed:
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25121 times
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In lugnet.technic, Kevin L. Clague wrote:
> Mr. Pneumatics, Dr. C. S. Soh, has always been quite vocal about the
> superiority of small pumps vs. large pumps. He did static pressure comparisons
> between a small pump and a large pump, each powered by a mini-motor. His test
> showed that the small pumps are superior.
Actually, as I have always emphasied, the large pump is better if operated
furiously by hand.
> I've not done any serious measurement yet, but it is very clear to me that Dr.
> Soh *is* absolutely correct. When running the large pump using RC racer motors
> turning an 8T driving a 40T, and the small pump compressor at the same gear
> ratio, (and the same battery packs), the motors turn faster with the small pump
> compressor. I didn't use a tachometer to measure RPM, but the motors are quite
> loud, and whine at a frequency related to how fast the motor turns. The whining
> with small pumps was higher pitch than the large pumps.
You should get one of the Speed Computer thing instead of relying on your ears
and maybe lose your hearing.
> One thing to note is that I finally have a compressor that can run the
> inchworm faster than I can by pumping by hand.
Hey, what will you be doing with all your large pumps, then?
> So, Dr. Soh, you were right all along. Feel free to say "I told you so!"
Well, I have always believed that the large pump was meant to be manually
operated and the small pump was designed to be motorised...
C S
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Message is in Reply To:
 | | Re: SSClagorpion - Compressor
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| (...) Thanks Eric, I have a progress report, boss.... ;^) I have completed two compressors. The first is basically a two large pump compressor driven by two RC racer's motors (very powerful). This compressor is implemented with one large piston and (...) (20 years ago, 31-Jul-04, to lugnet.technic)
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