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I took my compressor apart, and modded it for MOAR pressure.

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I took my compressor apart, and modded it for MOAR pressure.

Unread postAuthor: psycix » Wed Jan 28, 2009 6:26 pm

I took my compressor apart because I wanted to see how it worked AND I wanted to see if I could improve/mod it. I noted that all parts were rated 12 bar or higher....

I also wanted to see if it had any dead volume, but that appeared to be minimal.


MOAR PRESSURE:

Getting more pressure out of it was easier then I expected. Actually, even my grandma could mod it.
Under the safety cap is a bolt with + and - next to it.
The bolt adjusts spring strength. And the spring tension determines when the pressure switch will turn the compressor on and off.
Just rotate it to the + side. I found out that 1 full rotation was about 1/3rd bar aka 5 psi.

Now there is one problem: The safety popoff. It did his job whenever I went above 8 bar.
But I simply took that off and replaced it with a plug. (NEVER DO THAT! ITS VERY BAD, THE POPOFF IS THERE FOR A REASON) :evil:
But I still did. I maybe will get an adjustable one and put that on.

After some tries fiddling with the magic bolt I decided that 10 was enough as the compressor seemed to take a while to increase the pressure any further.
So for now it just goes up to 10 instead of 8. Thats +25%. And I am happy with that.
All components were rated for 12bar or more so it COULD go up to that (+50% pressure), but I dont need that.

Disclaimer:
I can not guarantee what happens if you open up your compressor and mod it. If you destroy it or if you have a 10gallon air tank to explode in your eye, its not my fault.


Now for the pictures: :D
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Attachments
11- piston.JPG
And finally: the piston itself.
As you can see from the tracks on the cylinder wall it moves up completely.
There is almost no dead space.
10- check valves.JPG
Here you can clearly see that the check valves are just metal strips.
9- Check valves.JPG
The check valves. Note that dead volume stops here, so the big empty cap doesnt matter.
8- Cap bottom.JPG
The cap is hollow on the inside.
7- Taking the cap off.JPG
Opening it up.
6- compressor.JPG
Here you can see the piston housing, electromotor and a capacitor.
5- switches.JPG
The switches that turn the power on and off. These get controlled by the spring, but when pressing in the red button to turn the compressor of (like I do with my finger here) they also open.
4- bolt.JPG
The bolt on top is the magic bolt which determines when it shuts on or off.
You can also see the + and -.
3- stuff overview.JPG
This is what is under the cap with the red button. To the left you can see the popoff valve which I later replaced by a plug.
2- overview.JPG
The air compressor in its full glory.
The yellow warning label reads:
WARNING!
Pressure controls set at factory for maximum safe operation. DO NOT ADJUST FACTORY SETTINGS!
But lets pretend the label wasnt there. :)
1- 10 bar.JPG
10 Bar! :D
Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

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Unread postAuthor: maggotman » Wed Jan 28, 2009 6:40 pm

i removed the gaskets on my homemade one and i have set the switch to cut off at 240psi and cut in at 190psi i found that after 240 it dosnot realy pump well basicaly it cant compres the air in the dead space. nice mod btw
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Unread postAuthor: inonickname » Wed Jan 28, 2009 7:34 pm

This one goes to 3000 8)

3k psi on tap would be beast..

Cool mods though
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Unread postAuthor: Hotwired » Wed Jan 28, 2009 7:45 pm

Spending a few grand on a compressor for your spudgun made with a couple of hundred would indeed be interesting.

Some day when I have half a million pounds in assets I might do that. For a spudgun worth aroundabout the same in costs.


Useful mod. Not something that would be good to find the upper limits of mind you but 10bar is a decent output for more or less free.
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Unread postAuthor: Ragnarok » Wed Jan 28, 2009 7:50 pm

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Does that thing kinda look like a big cat to you?
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Unread postAuthor: inonickname » Wed Jan 28, 2009 8:03 pm

High pressure co-ax

He ended up buying a bottle of nitrogen to feed it. it would end up cheaper using the compressor.
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Unread postAuthor: MrCrowley » Wed Jan 28, 2009 8:20 pm

Ragnarok wrote:Turn it up to ELEVEN!!! :D

Oh God :D
Now you made me watch it again :D

"You're on 10 on your compressor, where can you go from there?"


Cool mod psycix, i'd be a bit worried about doing it to mine because I fear I have a fair amount of rusting going on inside the tank. The compressor is only 2 years old, but I always forget to let the air out of the tank when not using it, and I get a quite a bit of brown water coming out when I drain it.
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Unread postAuthor: Ragnarok » Wed Jan 28, 2009 8:48 pm

MrCrowley wrote:Oh God :D

If you think the Spinal Tap references are bad, wait until someone does a 621 bar cannon. My response will be inevitable.
*Waits for obscure joke to soak in*

Now you made me watch it again

And that's a problem why? :tongue5:
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Unread postAuthor: trae08 » Wed Jan 28, 2009 9:39 pm

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Marvin the Martian: Where's the kaboom? There was supposed to be an earth-shattering kaboom!

Marvin the Martian: The Earth? Oh, the Earth will be gone in just a few seconds.

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Unread postAuthor: jackssmirkingrevenge » Wed Jan 28, 2009 11:51 pm

Interesting, always wanted to have a play with this. I think the 8 bar is a euro thing, as US compressors looking exactly the same always seem to go to 10 bar.
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Unread postAuthor: POLAND_SPUD » Thu Jan 29, 2009 1:27 am

we want MOAR pressure !!
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Unread postAuthor: inonickname » Thu Jan 29, 2009 3:47 am

Ragnarok wrote:
MrCrowley wrote:Oh God :D

If you think the Spinal Tap references are bad, wait until someone does a 621 bar cannon. My response will be inevitable.
*Waits for obscure joke to soak in*
It's ovaaaaaaaar nine thousaaaaaaaaaaaaaaaaaaaaaaaaaand!

Seriously.
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Unread postAuthor: psycix » Thu Jan 29, 2009 7:19 am

Ragnarok wrote:Turn it up to ELEVEN!!! :D

I could, but I dont need it. I actually dont even need 10 out if it, but it gives some extra tank volume if you regulate it down.
For higher pressures I use my fridge pump.
Maybe I should build a BBMG. Just because I have a compressor. And maybe that will ask for 11.... or 12.

This one goes to 3000 Cool

20 times as much pressure. 55 times the cost.
That compressor is a whole different thing then normal compressors, as it is used for other things.

For me there are two kinds of compressors:
Low pressure high volume (normal compressors) Used to fill up large PVC cannons
High pressure low volume (fridge compressors etc.) Used to fill up metal high pressure guns
A low pressure compressor will never reach the higher pressures, and that was not the target of this mod. It was actually just to see "If I could"



"Over 9000"
I knew that one was coming. Actually I wanted to say it myself xD
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Unread postAuthor: maggotman » Thu Jan 29, 2009 12:47 pm

psycix wrote:
Ragnarok wrote:[url=http://uk.youtube.com/watch?v=d54UU-fPIsY]Turn

For me there are two kinds of compressors:
Low pressure high volume (normal compressors) Used to fill up large PVC cannons
High pressure low volume (fridge compressors etc.) Used to fill up metal high pressure guns
A low pressure compressor will never reach the higher pressures, and that was not the target of this mod. It was actually just to see "If I could"



or combine the 2 and ger realy high pressure and high volume just dont over do it like i did
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Unread postAuthor: psycix » Thu Jan 29, 2009 7:13 pm

Maybe I will.
Just need to find out a way to connect a male quick connect to the inlet. Either epoxy, or maybe another compression fitting.
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