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Old 09-12-2018, 12:18 PM   #1
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Air Pressure

It’s been a few months since we’ve towed anywhere. I saw one of my 19’s 4 Carlisle tires was low. I like the old fashioned stick gauges because they come straight to the point but I bought the digital because it’s, well, digital. Must be more accurate. Used my Slime digital gauge to check the tire.

The digital gauge always wants to tell me more than I want to know. It forces me to scroll through other stuff I could care less about before getting to the reading I need. The other problem is when you stick it onto the tire valve it never seats right so air escapes before you get it right. My tire read 18 PSI. Should be 65 PSI. The tire beside it was around 26 PSI.

For Christmas I got a neat air compressor gun. Very expensive. Especially if dear one orders it from a fancy catalogue. It looks like a battery powered drill but has another attachment so you can plug it into a cigarette lighter for 12 volts. I charged its battery and screwed its 8 inch long attachment onto the tire valve. The really neat thing is the hose attachment that screws onto the valve. You don’t have to hold it in place on the valve. This is a big deal if you got bad knees or don’t fancy getting yourself down to tire level. (Aside: read that thread, “Gimpy People”.)

Has a little digital display you can barely see because it’s so tiny. But you can set it to shut off when it reaches the right PSI. On battery power it took 12 minutes to get the tire from 18 PSI to 45 PSI. I stopped then, because the handle was now real hot.

That was enough for me. Hitched up ET-19 and drove to the nearest gas station to finish the job. I have, in the past, noted that too many gas stations have vandalized air pressure pumps or want you to pay with a dozen or more quarters. The one in town was good. It only takes credit cards. Fine, I grumbled, at least the job will go faster. You hope a thief won’t hack it, you pay a buck-fifty on your card for um, 5 minutes of air pressure.

Four repeat performances later I quit after my Slime digital was averaging only 45 PSI on all 4 tires. My problem was being down in cruel gravel, and having to physically hold that hose nozzle tightly onto the tire valve stem. I just couldn’t stop more air escaping than what I was putting in.

There must be a better way. Went to Harbor Freight. Home, began the internet search. Read reviews, book-marked several 12 volt compressors. Pondered. Next day we were at Costco and I saw a little 12 volt compressor for $19bucks, only 3 left. It has a hose that locks onto the tire valve stem. I grabbed it.

It took 3 minutes to get to 62 PSI off my trailer batteries, no voltage lost.
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Old 09-12-2018, 12:22 PM   #2
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I hate the Slime digital pressure gauge Myron. After one use I threw it away and went back to my trusty chrome stick gauge I've had for decades.
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Old 09-12-2018, 12:30 PM   #3
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Ditto that. I didn't like their analog version either.
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Old 09-12-2018, 12:31 PM   #4
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I use this dial type pressure gauge. I also added remote tire pressure monitor (a TireMinder 4 tire system) which has worked well so far. The only thing I don't like about it is it doesn't immediately go to zero when the tow vehicle drives away from the trailer - takes about 15 minutes to realize the trailer is gone. It does immediately show changes in pressure when within range of the trailer. Uses a repeater in the trailer...
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Old 09-12-2018, 12:41 PM   #5
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I ran into a situation on my trip back from Chilliwack. I was getting ready to head into the desert and checked tire pressure to find them low. I went to 2 gas stations before finally able to pay to get them filled. One station took pressure out instead of in! When I reached Texas & my daughters house, I ordered the Slime40026 air compressor. Hooks up directly to the batteries, but then lots of power. I never leave home without it now! I also recently added the TireMinder Solar TPMS. It is really nice to be able to see what the pressure is in the 4 tires on the Escape 19.
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Old 09-12-2018, 01:06 PM   #6
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I use the compressor in my garage with a gage like this one to fill my tires (similar but not identical). Seems to work quite well.

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Old 09-12-2018, 01:07 PM   #7
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Quote:
Originally Posted by MyronL View Post

It took 3 minutes to get to 62 PSI off my trailer batteries, no voltage lost.
Interesting, I run my tires at 50 psi.

[QUOTE=kstock11;262409
I went to 2 gas stations before finally able to pay to get them filled.[/QUOTE]

I noticed a sign in a gas station in CA that said if a person buys gas the station is obligated to provide both air and water. This was a new station. I haven't ever gone to the air pump in other stations. Is the free air and water to customers widespread?


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Old 09-12-2018, 01:17 PM   #8
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i bought a little air compressor a few years ago it was featured by someone on this forum it plugs into the cigarette plugs on my trailer (i put one of those plugs on each side ) it filled my tires quickly. i had never tested the pressure or filled them before so i was surprised by how well it all worked - i had been dreading doing that and feeling that i should do it more often! i looked up the suggested pressure on my trailer info it was different then i thought it would be i think it was 50 but i m not sure.
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Old 09-12-2018, 01:25 PM   #9
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You go by the pressure recommended on the tire, not the trailer. Currently the stock factory tires are 50 psi. If you replace the tires, read the tire manufacturer's recommendation for proper pressure.
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Old 09-12-2018, 01:53 PM   #10
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yes they match info from the trailer matches tires - but its a new trailer
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