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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Sat, 5 Jun 2004 01:57:31 GMT
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Viewed:
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20701 times
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In lugnet.technic, Kevin L. Clague wrote:
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Thanks for the ideas. I’ll consider the planar design concept (done them
before with large pumps), but first I want to try radial. I’m curious which
design would have less moving parts? Less moving parts, less friction,
higher efficiency.
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From what I’ve been told of mechanical physics, part distortion is also a
concern. There’s a tradeoff between making the pump design sturdier and keeping
the overall weight/size down. Flat component pumps can be squeezed into
available empty space rather than requiring that the frame be expanded if you
need to add more. Heck, you might even find that it works best to run rotaries
for your primary air supply and supplement them with a few sets of flat pumps as
needed.
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I’d prefer a design where the pump is sandwiched between two support
halves, so that it is harder for the pumps to distort the support structure.
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It was merely a quickie build to show a design concept. I would be embarassed
for you if you used it exactly as shown because I’ve already figured out quite a
few potential improvements without really even trying. :)
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In your design, only one endpoint of the supporting pin is fixed to the
structure. This means the pump could force the pin to twist in place, and
have its shape distorted. Using a long frictionless pin and two 24T gears
would reduce the ability of the pump to distort the pin.
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So frame them in on both sides. You’ve got 24 positions available just through
the gearing, so you don’t need the big sheaves for phase-adjustment. Switch
over to 1x2 flat liftarms to save weight. That still gives you four available
positions per bank, you can run a bank on each side of the main drive shaft, and
you should be able to get at least 2-3 banks stretched out over the entire
length of the main torso if you strap them to the belly (it would actually even
be anatomically appropriate for all of the “breathing” to be done there). A
fully-framed side-mounted 4-pump bank could be 1” tall x 2.5” wide x 6” long if
you frame between each individual pump, or 1” tall x 2.5” wide x 4.75” long if
you frame them in pairs on either side of the gear. If you run the drive system
above banks running opposing pumps, you can make a 4-pump bank 1” tall x 4” wide
x 3.75” long. Going that route, if your frame is at least 8” wide and 11-1/4”
long (and from what I’ve seen so far it should be at least that large), you
could fit 6 4-pump banks on the belly alone.
Anyways, it’s just an idea. If you decide to experiment with it and want any
clarification of the modified versions I’ve mentioned, LMK. For now, I’m
eagerly awaiting this rotary pump system you’re working on.
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Message has 1 Reply:
 | | Re: SSClagorpion - Compressor
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| I know how much Steve likes to wait, so...... I got enough three blade rotor parts (from Gigamesh, (URL) ) to make a hexagonal frame for my radial compressor. I've got pictures: (URL) the 44374's that the pump bases are hooked to. Very aesthetically (...) (20 years ago, 8-Jun-04, to lugnet.technic, FTX)
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Message is in Reply To:
| | Re: SSClagorpion - Compressor
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| (...) Hi David, Thanks for the ideas. I'll consider the planar design concept (done them before with large pumps), but first I want to try radial. I'm curious which design would have less moving parts? Less moving parts, less friction, higher (...) (20 years ago, 4-Jun-04, to lugnet.technic, FTX)
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