very nice tear down.. I liked the smiple mechanism behind the pressure gauge.. i never knew how it works... very nice. nice explanation of the electric circult..
4:27 I have a Slime brand compressor that seems like a little brother to this design; the piston is almost identical. The rubber seal on mine is just about non-existent, so it has no hope of working. I don't know if one can order a new one, or if it would be possible to improvise something. Thanks for posting this; at least I know how it should look now. PS: The hole through my piston rod is conical from the wear of it clanking around all this time. I flipped it over, and added a plastic plug to limit its side-to-side motion, so there might be some more life left in it as I sealed a lot more grease in the chamber than was originally there.
I rembered that name since I was a kid, when my Dad had an oil gauge from our Bugatti which developed an oil leak at the sealed end from the bourdon tube.
A pair of simple (and small) ball check valves. I've ordered two new compressors from eBay (250psi for £5.25 inc. delivery), will be interesting to see if it blows up before the bottle does, and if it can get anywhere near 250psi!
@AintBigAintClever There are different air compressors without inlet valve on cylinder head. Where else could inlet valve be located? How are such inlet valves working?
I don't think so. The valves are simple one-way valves. Blowing air in through the inlet valve would blow it straight back out through the outlet valve. Blowing in through the outlet would get you nowhere as it would just stay closed.
The lamp is probably 8W or so as that is a common power rating for those types of lamps (G6 single contact bayonet) over here (67, 97, 98, etc). 21W lamps usually have S8 envelopes.
My 12v compressor is DOA -- no hum or anything when plugged in. I replaced a burned out fuse in the plug and it has not blown after subsequent plugins. There are no hidden switches and I've jiggled it in the lighter socket -- with car running -- to no avail. As an experiment I ran continuity test with multi-meter, putting one lead at connection to motor and the other at the center (fuse) contact or one of the side clips on the plug. I've run every combination of leads and: when leads are on the same wire, (e.g., side clip of plug and connection of THAT wire to motor) I get 0 ohms. When leads are on opposing wire (e.g., center (fuse) on plug and connection of opposite wire to motor) I get continuity with 001 ohm reading. That seems to indicate current runs through motor, and brushes are at least good enough to send tiny multi-meter current through, and if there's any internal switch it is "on" (I think). When I plug motor into car (while running) and put leads on motor connections for voltage test, I get 0 volts. So, the motor is drawing zero voltage even though all the connections are good. This makes sense since motor isn't running, but I'm trying to understand why it doesn't even draw a little bit. Would you conclude that motor is simply fried (although it passes current through and wouldn't it at least hum in that case?) or is it possible that the plug itself is bad, i.e., maybe the side clips aren't making contact at all (seems unlikely but it's all a mystery to me so I'll make any guess!) Thanks in advance for anybody's input. I'm a total rookie at motors and this old roadside emergency compressor is my first attempt at trying to learn. I suppose there are components within the motor that cause the motor to fail even though current passes through, and I just don't know enough to understand what's happening.
Thanks for replying! Yes, the car sockets work. I tried testing my compressor on two different cars. In one car, phone usb charger works. In the other car, a power inverter works. Any guesses?
howzit buddy. Excellent on explaining the tech part of how a miniature portable air compressor work. However I wanted to know are the internal hose that connects from the motor and hose that connect to PSI gauge do the hoses have a specific name or are they known as fill air hose. I can't find anything on line that describes the names of all the parts of portable 12V air compressor. There's alot of data about the regular large compressor but not too much about 12V compressor
Does anyone know where to get the rubber/plastic piston rings for this little compressors?? I have a Diehard 1150, Sears doesn't list or have any parts for these things...
A counter-rotating disc geared to the the same speed as the crank would perfectly balance the piston and that would cut the vibration a lot. I've seen some models with a lot less vibration, so I'm guessing that they added this feature.
I have one of those too, but now im trying to make a 2 stroke engine out of it but there is no videos of it, if you still have it could you try to make an engine out of it you too?
Hi AintBigAintClever, there are like thousands of these tyre inflators out there. Reading the comments on each always throws up the fact that most don't last beyond a few uses. Which one would you recommend that's well made? I don't even mind one that operates off the mains (power). I bought one off Argos but it died after less than 10 uses I should say. Thanks!
I know this video is old but what would make a brand new 12 volt compressor not come on? I opened the package, plugged it in cigarette lighter and NOTHING. Nothing on it comes on. The cigarette lighter works great but compressor will not come on in any kind of way. Is there a fuse in it that could be blown or something? I can't figure out how to get it to work . Any help by anybody on here is greatly appreciated.
1) There may be a fuse in the plug (the tip will unscrew to reveal the fuse) 2) The plug may not be making contact, try rotating it (in the socket there's a centre contact plus two sprung side contacts which grab the lighter when pushed in, these contacts need to touch the side contacts of the plug) 3) The socket may be off when testing (some cars have permanent 12 volts to the socket, others need the key turned to the first or second click) 4) The compressor may have a switch fitted (possibly in a daft location) 5) The compressor may be DOA.
+Manz I suppose that would be called the gearbox. No idea what sort of metal it was, probably the same sort of die-cast stuff used when making Matchbox cars.
THOSE SIMPLE COMPRESSOR SHOULD HAVE POST USE MAINTENANCE; EACH TIME USED EACH TIME SHOULD BE CHECKED AND FAT THE PISTON. I THINK FRICTIONS MUST BURN THE FAT BETWEEN THE CYLINDER AND PISTON;
very nice tear down.. I liked the smiple mechanism behind the pressure gauge.. i never knew how it works... very nice. nice explanation of the electric circult..
Never pulled apart a pressure gauge before. You learn something new everyday; Cheer for the upload old mate!
I know this is ancient but WOW! Just what I was looking for. THANKS!
I agree, he's very good at explaining. He deserves more views.
The bourdon tube ( I think ) within the gauge.
Great video and excellent explanation of the circuit for the flasher.
4:27 I have a Slime brand compressor that seems like a little brother to this design; the piston is almost identical. The rubber seal on mine is just about non-existent, so it has no hope of working. I don't know if one can order a new one, or if it would be possible to improvise something. Thanks for posting this; at least I know how it should look now.
PS: The hole through my piston rod is conical from the wear of it clanking around all this time. I flipped it over, and added a plastic plug to limit its side-to-side motion, so there might be some more life left in it as I sealed a lot more grease in the chamber than was originally there.
I rembered that name since I was a kid, when my Dad had an oil gauge from our Bugatti which developed an oil leak at the sealed end from the bourdon tube.
Standard tyre valve. 10mm hole in the bottle cap, push the valve through as far as it'll go.
Very well explained!
A pair of simple (and small) ball check valves. I've ordered two new compressors from eBay (250psi for £5.25 inc. delivery), will be interesting to see if it blows up before the bottle does, and if it can get anywhere near 250psi!
Not quite, but I did pry it open with the wrench when I couldn't get the screws undone all the way.
@AintBigAintClever There are different air compressors without inlet valve on cylinder head. Where else could inlet valve be located? How are such inlet valves working?
nice one.with pop bottles i've had trouble connecting to the bottle top .what do you use ? good tear down and circuit explanation
I don't think so. The valves are simple one-way valves. Blowing air in through the inlet valve would blow it straight back out through the outlet valve. Blowing in through the outlet would get you nowhere as it would just stay closed.
thank you very much
The lamp is probably 8W or so as that is a common power rating for those types of lamps (G6 single contact bayonet) over here (67, 97, 98, etc). 21W lamps usually have S8 envelopes.
Nice video :)
My 12v compressor is DOA -- no hum or anything when plugged in. I replaced a burned out fuse in the plug and it has not blown after subsequent plugins. There are no hidden switches and I've jiggled it in the lighter socket -- with car running -- to no avail.
As an experiment I ran continuity test with multi-meter, putting one lead at connection to motor and the other at the center (fuse) contact or one of the side clips on the plug. I've run every combination of leads and: when leads are on the same wire, (e.g., side clip of plug and connection of THAT wire to motor) I get 0 ohms. When leads are on opposing wire (e.g., center (fuse) on plug and connection of opposite wire to motor) I get continuity with 001 ohm reading. That seems to indicate current runs through motor, and brushes are at least good enough to send tiny multi-meter current through, and if there's any internal switch it is "on" (I think).
When I plug motor into car (while running) and put leads on motor connections for voltage test, I get 0 volts. So, the motor is drawing zero voltage even though all the connections are good. This makes sense since motor isn't running, but I'm trying to understand why it doesn't even draw a little bit.
Would you conclude that motor is simply fried (although it passes current through and wouldn't it at least hum in that case?) or is it possible that the plug itself is bad, i.e., maybe the side clips aren't making contact at all (seems unlikely but it's all a mystery to me so I'll make any guess!)
Thanks in advance for anybody's input. I'm a total rookie at motors and this old roadside emergency compressor is my first attempt at trying to learn. I suppose there are components within the motor that cause the motor to fail even though current passes through, and I just don't know enough to understand what's happening.
Is the cigarette lighter socket still working normally apart from this? Running a USB charger or an actual cigarette lighter, for example?
Thanks for replying! Yes, the car sockets work. I tried testing my compressor on two different cars. In one car, phone usb charger works. In the other car, a power inverter works. Any guesses?
howzit buddy. Excellent on explaining the tech part of how a miniature portable air compressor work. However I wanted to know are the internal hose that connects from the motor and hose that connect to PSI gauge do the hoses have a specific name or are they known as fill air hose. I can't find anything on line that describes the names of all the parts of portable 12V air compressor. There's alot of data about the regular large compressor but not too much about 12V compressor
Just braided air hose I think. Putting that into Google Image Search brings up lots of examples.
Does anyone know where to get the rubber/plastic piston rings for this little compressors?? I have a Diehard 1150, Sears doesn't list or have any parts for these things...
So what makes such a racket? Connecting rod - Piston assembly?
It would be great if such compressors can be modded to be a bit quieter.
A counter-rotating disc geared to the the same speed as the crank would perfectly balance the piston and that would cut the vibration a lot. I've seen some models with a lot less vibration, so I'm guessing that they added this feature.
I have one of those too, but now im trying to make a 2 stroke engine out of it but there is no videos of it, if you still have it could you try to make an engine out of it you too?
Well spotted, cheers. Googling "Bourdon tube" brings up a Wikipedia entry that goes into detail.
Air compressor 12v kese riper kare
Hi AintBigAintClever, there are like thousands of these tyre inflators out there. Reading the comments on each always throws up the fact that most don't last beyond a few uses. Which one would you recommend that's well made? I don't even mind one that operates off the mains (power). I bought one off Argos but it died after less than 10 uses I should say.
Thanks!
I'm currently using a Michelin one with digital gauge and auto cut-off, on a weekly basis due to leaky tyre beading.
+AintBigAintClever Not broken the Michelin one yet.
I know this video is old but what would make a brand new 12 volt compressor not come on? I opened the package, plugged it in cigarette lighter and NOTHING. Nothing on it comes on. The cigarette lighter works great but compressor will not come on in any kind of way. Is there a fuse in it that could be blown or something? I can't figure out how to get it to work . Any help by anybody on here is greatly appreciated.
1) There may be a fuse in the plug (the tip will unscrew to reveal the fuse)
2) The plug may not be making contact, try rotating it (in the socket there's a centre contact plus two sprung side contacts which grab the lighter when pushed in, these contacts need to touch the side contacts of the plug)
3) The socket may be off when testing (some cars have permanent 12 volts to the socket, others need the key turned to the first or second click)
4) The compressor may have a switch fitted (possibly in a daft location)
5) The compressor may be DOA.
Thanks for the reply
what material was the framewrok for the gear/piston made out of? what your left thumb was on at 3:16
and what would that part be called?
+Manz I suppose that would be called the gearbox. No idea what sort of metal it was, probably the same sort of die-cast stuff used when making Matchbox cars.
THOSE SIMPLE COMPRESSOR SHOULD HAVE POST USE MAINTENANCE; EACH TIME USED EACH TIME SHOULD BE CHECKED AND FAT THE PISTON. I THINK FRICTIONS MUST BURN THE FAT BETWEEN THE CYLINDER AND PISTON;
Would you happen to know what material the cylinder is made off?
+allnattyBRO Not sure. Felt like steel if I remember correctly.
allnattyBRO Алюминий
these enclosed ones seem a daft idea, that piston is getting super hot, and nowhere to go, except ruin the seals and valve rubber
is it possible to make this air engine into a fuel or nitro engine?
pls let me know if i can
Not much inside an air compressor, so might as well make the teardown as complete as possible. Except for the motor, we all know what's in there.
There are different air compressors without inlet valve on cylinder head. Where else could inlet valve be located? How are such inlet valve working?
You didn't 'open it up carefully' Photon style :P
probably done a reed valve, not a very well built pump unit!
Lol you can make a steam engine out of that
good thing i dont get a hold of that, i would have *made* it kick a rod ;p
☺'
ta ,