I like this unit (replaced a cheap one I had bought that took forever to inflate). The inflates-in-1-minute is questionable--must apply only to slightly deflated tires, but it still does a very good job.
As with many, I was frustrated with the screw-on adapter for it let out too much air, so one had to slightly over-inflate to compensate. So I found a solution.
In short, I spliced on a clear 1/4" plumbing tube tube/hose + quick release adapter from an old manual bicycle pump I had (of which I kept about 6 inches of its hose). One can find this clear hose at any Home Depot and similar stores.
The splices were done with leftover metal tube I had that the clear and yellow hoses fit right into and I used some Goop Plumbing--same as Goop Shoe Goo, really--to seal them (I love this stuff it's very versatile adhesive). A plastic cylinder of correct diameter and sufficient thickness will work as sleeve too.
So if interested in making something like this, here are two versions after you cut off the screw-on valve adapter keeping at least 6 inches of its yellow hose:
A) BASIC (with original spiral hose) for Cars, Trucks
YELLOW SPIRAL HOSE END === > splice sleeve < == HOSE FROM QUICK-RELEASE ADAPTER/VALVE.
B) NON-SPIRAL (spiral replaced with clear hose) for Motorcycles, ATV's
PUMP-END YELLOW HOSE (minus spiral) === > splice sleeve < === CLEAR HOSE === > splice sleeve < == HOSE FROM QUICK-RELEASE ADAPTER/VALVE.
Some additional notes:
-- HOSES: Depending on your distance to tires, keep or cut as much or little off the original spiral yellow tubing from either end as you need. In may case, I got rid of the spiral part entirely (the above "B" version) since I get around only on a motorcycle: I plug the 1040 into a custom 12v outlet near my odometer and only need a couple of feet of hose to reach my back tire. The spiral also took up too much room in my customized baggage compartment on the bike.
-- QUICK RELEASE ADAPTER: The better quality, i.e. made of or mostly made of metal, the better. If yours still has some of that braided cloth on the hose, I'd suggest peeling it off so that there is a smooth and snug fit in the splice sleeve. The un-peeled black rubber hose from these pumps usually is the same or very similar diameter as yellow and clear hoses (it was in my case).
-- SLEEVES: They should be long enough for a solid grip around hoses overlapping these by at least 3/4", so double that in total length. Also make sure there are no rough edges to the sleeves to avoid damage to the inserted hoses during gluing and thereafter (using the pump, storing, etc.).
Sure, this takes a little work, but the pay-off is worth it, IMO.
You'll thank yourself in the years ahead.
Case in point: Right now, I have a mystery slow leak on my rear tire whereby I have to inflate a bit every time I go out to ride (correct tire pressure on motorcycles are far more critical than on cars), so I'm very grateful for the 1040 -- and its new quick-release interface.
Last but not least:
While I've been buying stuff at Amazon for years, I got a better price for this item than what is currently listed here -- at my local Pep Boys (about USD $10 less).Get more detail about Master Flow MF-1040 Cyclone High Volume Portable Air Compressor.
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