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Machine Shop and Tool Talk

speedy air compressor


can anyone give me any info on a speedy air compressor like this one? are they of any use or value?...

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  #1  
Old 06-20-2013, 11:35 PM
a jossund a jossund is offline
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Default speedy air compressor

can anyone give me any info on a speedy air compressor like this one? are they of any use or value? any history?
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  #2  
Old 06-21-2013, 03:46 AM
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John Newman, Jr. John Newman, Jr. is offline
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Default Re: speedy air compressor

The compressor does not use a conventional piston in a cylinder. It has a rubber diaphragm and operates more like a mechanical fuel pump. If yours puts out good air, then it is working as it should. If not, the diaphragm is probably dry rotted. Might be able to make a new one from a heavy duty truck tire inner tube.
Somewhere in my archives, I have a V-Twin version of one of these compressors. Not sure if it is a Speedy Air brand, but looks similar, if my memory serves me correctly. Will try to remember to bring the camera to the shop and take some pictures of it.
Other than that, I can't offer any further information on them.
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Old 06-21-2013, 08:44 AM
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Alan New Alan New is offline
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Default Re: speedy air compressor

I have a twin V version also. My uncle replaced the diaphragms in it years ago. I have used it for spray painting, and still use it to fill tires. It will pump up to about 35 psi.
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Old 06-21-2013, 09:57 AM
Joe K Joe K is offline
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Default Re: speedy air compressor

Very much used for airbrushing?

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Old 06-21-2013, 10:07 AM
JerryLee JerryLee is offline
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Default Re: speedy air compressor

Gast has dominated the market for diaphragm type air compressors and vacuum pumps for the past forty to fifty years. I wouldn't be surprised to hear that they bought Speedy out as part of their growth a long time back.

Every Gast pump I have seen has reed valves. It's a good idea to remove the head occasionally and clean and inspect the reed valves. It wouldn't hurt anything to spread a very light coat of silicone grease on the diaphragm at the same time, just to keep it pliable.

A well maintained diaphragm pump should be able to deliver 100 PSI air all day long.
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Old 06-24-2013, 10:32 PM
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Default Re: speedy air compressor

Here ae some pictures of mine. It was probably intended strictly for spray painting as the gauge has a "NORMAL OPERATING RANGE" shown on it from 20 to 40 psi. There are spring loaded pop-off valves screwed in each head. Don't know where they open at since I have never run this with power. It was once belted to a Lauson 55-S engine.
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