portable air compressors for tires
- Thread starter alsmith
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tomjasz
1 GW
When I rode Vespa GTS250 scooters I carried a "CyclePump" and incredible little compressor, but limited to 12V and quite expensive.
The aluminum case is less than 2″ high x 4″ wide x 6″ long
I sold it with my scooter and scooter tools. So far I've avoided a DCDC device, even though I have one. I prefer riding with one less device to manage. That said if anyone wants one of the best 12V compressors and is willing to spend $110 for it's very compact size...this is the one!
July 18 2017: Motorcycle Consumer News awarded the CyclePump their “Top Choice Award” in a shoot-out with 6 other tire inflators. https://bestrestproducts.com/wp-content/uploads/2017/07/MCNEWS-August-2017-Mini-Compressor-JCW-1.pdf
The aluminum case is less than 2″ high x 4″ wide x 6″ long
I sold it with my scooter and scooter tools. So far I've avoided a DCDC device, even though I have one. I prefer riding with one less device to manage. That said if anyone wants one of the best 12V compressors and is willing to spend $110 for it's very compact size...this is the one!
July 18 2017: Motorcycle Consumer News awarded the CyclePump their “Top Choice Award” in a shoot-out with 6 other tire inflators. https://bestrestproducts.com/wp-content/uploads/2017/07/MCNEWS-August-2017-Mini-Compressor-JCW-1.pdf
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alsmith
100 kW
OK, just been offered a refund from banggood, I guess it's an admittance that it's a 12V item. I think it will go to my brother as an emergency option for his car (but I AM tempted to put 48V through it ....)
So back to the original hunt for a cheap emergency compressor...
I have to say that I'm reasonably happy with Bangggood but a little disappointed/annoyed too. When I originally contacted them about the problem I included pictures clearly showing the problems yet they mustn't read the initial messages because they asked for a video of the problem. All I did in response was ask what a video would show that they didn't already have, added a couple of extra bits of mildly sarcastic captions, and say if they really did want the video what was the extra things that they wanted me to show that the pictures didn't have.
So back to the original hunt for a cheap emergency compressor...
I have to say that I'm reasonably happy with Bangggood but a little disappointed/annoyed too. When I originally contacted them about the problem I included pictures clearly showing the problems yet they mustn't read the initial messages because they asked for a video of the problem. All I did in response was ask what a video would show that they didn't already have, added a couple of extra bits of mildly sarcastic captions, and say if they really did want the video what was the extra things that they wanted me to show that the pictures didn't have.
Alan B
100 GW
The video of high RPM and smoke might be entertaining.
I expect Lunacycle has the right voltage units.
I expect Lunacycle has the right voltage units.
dilkes
100 W
Thanks for the update. I had ordered one as well, but have not received it yet. I assume it will be the same issue so I will also go for a refund or replacement.alsmith said:
If you do get "brave" and put 48V through the unit, I'd be interested in what happens!
Here's one, also from Banggood that is not quite as inexpensive, but definitely works at 48V -- a friend of mine bought one.
https://www.banggood.com/Wholesale-...=105229698&sc_uid=m8O34jI3Rm&cur_warehouse=CN
dilkes said:
That looks like the same model I have. Works great on my 52v pack.
tomjasz
1 GW
tomjasz
1 GW
Based on unit I recieved they messed up the choice in their shipping department. Mine is clearly marked 48v.alsmith said:
Alan B
100 GW
It would be interesting to know if the motor is different or if there's a regulator module added on the 48-72V units.
alsmith
100 kW
I'd be interested to know about the motor inside the unit- if it is marked as 12V or 48V? Mine has no additional circuitry inside- the 12V cigarette lighter is connected directly to the motor.
Alan B
100 GW
In fechter's photo on page 1 the wires appear to come straight out of the motor, so it would appear to be a higher voltage winding rather than electronics. Perhaps fechter will confirm this, as the complete wire path is not clear, but if there were some electronics the wire routing would likely have been different.
tomjasz
1 GW
I’ll open mine tonight and post pictures.
Alan B
100 GW
Why does the Bangood unit have red on the gauge from 30 to 45 psi or so??
The small Ryobi was only $19.95 at Home Depot, and is very ergonomic, shaped like a drill. They have a larger one as well, too large. But it requires their 18V lithium tool battery. It is much smaller than many others, though it is not as small as it could be, internally they are all pretty much a motor, some gears and a piston with a couple of one-way valves. The Ryobi has a much better than average gauge. It is really excellent around the house and vehicle. It is a bit larger than I'd like to carry on the bike, but it is within the range that it could be.
The imported unit that Lunacycle and Bangood carry is smaller if it is cut down as fechter and others have done. If I had one I'd design a 3D printed case for it instead of hacking on the plastic, but whatever works. Apparently the motor is wound for 48V instead of 12V, and Lunacycle indicates 72V max. I wonder how it operates on a fully charged 72V battery up around 80V? Might be really fast.
The small Ryobi was only $19.95 at Home Depot, and is very ergonomic, shaped like a drill. They have a larger one as well, too large. But it requires their 18V lithium tool battery. It is much smaller than many others, though it is not as small as it could be, internally they are all pretty much a motor, some gears and a piston with a couple of one-way valves. The Ryobi has a much better than average gauge. It is really excellent around the house and vehicle. It is a bit larger than I'd like to carry on the bike, but it is within the range that it could be.
The imported unit that Lunacycle and Bangood carry is smaller if it is cut down as fechter and others have done. If I had one I'd design a 3D printed case for it instead of hacking on the plastic, but whatever works. Apparently the motor is wound for 48V instead of 12V, and Lunacycle indicates 72V max. I wonder how it operates on a fully charged 72V battery up around 80V? Might be really fast.
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Alan B said:Apparently the motor is wound for 48V instead of 12V, and Lunacycle indicates 72V max. I wonder how it operates on a fully charged 72V battery up around 80V? Might be really fast.
Maybe the high end of the range is for the big staypuft marshmallow man?
tomjasz
1 GW
tomjasz
1 GW
I looked back and saw none with red for 30-45?Alan B said:
Mine, and Fechter's has a red scale for BAR.
alsmith
100 kW
Alan B said:
That's what I wanted but not at the cost over here- even imports end up around four times as much, and then if it's spotted by customs it would be duty, then our vat at 19% on top of it.
Alan B
100 GW
Local taxes and protectionism are a different problem. We should probably avoid that discussion.
I saw the red gauge on the Bangood 48V unit, probably just a different version of the colored scale on the other units. Not sure what it is for but probably just a typical pressure range for vehicle tires.
While reviewing the thread just now I see that fechter posted more photos of his unit on page 1 that clearly show the full contents and no electronics were evident. The new partial photo showed a diode only.
It is much cheaper to wind the motor for 48V than to make electronics that can handle the motor's surge currents.
I saw the red gauge on the Bangood 48V unit, probably just a different version of the colored scale on the other units. Not sure what it is for but probably just a typical pressure range for vehicle tires.
While reviewing the thread just now I see that fechter posted more photos of his unit on page 1 that clearly show the full contents and no electronics were evident. The new partial photo showed a diode only.
It is much cheaper to wind the motor for 48V than to make electronics that can handle the motor's surge currents.
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Alan B said:
Mine had a diode also. It would prevent it from running if you reversed the polarity, though with a brushed motor it could still run if reversed but maybe the brush timing favors one direction.
tomjasz
1 GW
Alan,Alan B said:
Oops, I guess I missed the blue picture. But wouldn't that be the normal, or common vehicle tire range?
FWIW No other electronics were evident. Why (I'm an electronics dullard) does the motor need a diode to limit flow in one direction?
Now that I see the space available I'm wondering how long 12V in 18650 batteries will fit in the 12V version and how long they would last? Any guesses 3p3s might fit.
Thanks for the comments!
T
Alan B
100 GW
The 18V tool batteries are 5S1P and run the 18V compressor quite a while, I would think that 3S2P should be good. Even 3S1P will probably be adequate for the 12V models if you keep them well charged.
alsmith
100 kW
i've just seen an aliexpress offer, but only 4 hours to go. Throttle with keyswitch and voltage display at £5.99 0r $8.13 delivered
Alan B
100 GW
Which would seem to have nothing to do with this thread.
eCue
10 kW
Unless you use it for a compressor on switch
Alan B
100 GW
We're still waiting for the video of the 12V compressor running on 48+ volts.
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