Automatic Tire Deflators - recommendations?

[Terrymo]

I moved from Staun‘s to Trailhead Tire deflators. Made in USA. I like them better than the Staun’s.

Because?

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[THAW]

Just kidding. I use a custom, built-in/attached 4-hose system with a digital pressure gauge and solenoid valves for adjustable, automatic pressure regulation both up and down.

 

[C.Sco]

I use Staun deflators. Like others said, they're a bit of a pain in the butt to calibrate, make sure you have air and a good pressure gauge when you do it because you'll need to deflate and re-inflate a tire several times in a row to get them all dialed in.

But once you've got them calibrated, they work great. I calibrated mine one time 3 years ago (to 15psi) and they've consistently worked great since then. Over 3 years they've stayed within +/- 1psi.

I like that if I'm feeling impatient to start wheeling, I can just twist them on and go, and the tires can deflate while I drive. Then I just pull them off when I take my next break (or before I hit an obstacle where they might hit a rock).

I also have a MorrFlate 4-tire inflation system with digital gauge, and I can use that to air down my tires if I wanted to, and technically it would probably be faster, but usually I only use that for inflation, not deflation.

 

[THAW]

I wonder if they are just using the exisiting module from ARB?
https://store.arbusa.com/pressure-control-0830001/

Maybe? I don't see it as an option on their site anymore. @EPIC Adventure Outfitters should be able to clarify that detail.

The Epic Pressure Control Upgrade Kit definitely used (no longer available/in-stock?) the ARB Pressure Control module.

This video shows it:


A buddy has the ARB Pressure Control system (but not the Kraken), and it caused a lot of problems on our last trip. It kept cycling on and off until the compressor fuses blew. But in the end, I think it may have all been caused by a loose battery ground.

 

[flick2614]

Apex valve stems, a timer and the onboard air pressure monitor. Done before you can finish a beer.

Auto's are never reliable and a pain in the ass to set up and recalibrate constantly.

 

[Terrymo]

Just kidding. I use a custom, built-in/attached 4-hose system with a digital pressure gauge and solenoid valves for adjustable, automatic pressure regulation both up and down.

Yeah..uhhh…pretty sure we’re still waiting for the full installation explanation video promised some time ago…unless I missed it?

 

[Terrymo]

I use Staun deflators. Like others said, they're a bit of a pain in the butt to calibrate, make sure you have air and a good pressure gauge when you do it because you'll need to deflate and re-inflate a tire several times in a row to get them all dialed in.

But once you've got them calibrated, they work great. I calibrated mine one time 3 years ago (to 15psi) and they've consistently worked great since then. Over 3 years they've stayed within +/- 1psi.

I like that if I'm feeling impatient to start wheeling, I can just twist them on and go, and the tires can deflate while I drive. Then I just pull them off when I take my next break (or before I hit an obstacle where they might hit a rock).

I also have a MorrFlate 4-tire inflation system with digital gauge, and I can use that to air down my tires if I wanted to, and technically it would probably be faster, but usually I only use that for inflation, not deflation.

I bought a cheap wheelbarrow tire to use and it saves a bunch of time over setting the automatic deflators with a full size tire. Stole the idea from someone here @sherpaJL I think

 

[dragoneggs]

Because?

I had a bit of hassle adjusting the Stauns so I decided to try another set. Staun is still in the tool bag and set at 15psi. The Trailheads are set for 12psi.

I tend to go with 12psi now since I got Icon Rebound Pro wheels that have the inner headlock tech that perform much better at lower psi than typical tire.

 

[Grayhound]

All of the tire deflators use the same principle. Tire air pressure lifts a piston which allows air to escape. The problem is that as the tire pressure drops not only does the pressure differential decrease also the piston lift decreases, so the tire pressure tends towards the target in an exponential curve that takes forever to get to the target. So I always drop the air manually for the last 5 psi or so. Which is a pain.

It would help if the piston diameter was larger and the bleed hole bigger. A better solution would be to use a spool valve, but no one has done that as far as I know.

These were the best deflators but I have not seen them for sale for a long time.

This is exactly why I run wide open and just keep the low pressure at a pace where I can walk around the jeep and undo them one by one and still be pretty accurate in tire pressure of the evic display.

 

[dragoneggs]

Maybe? I don't see it as an option on their site anymore. @EPIC Adventure Outfitters should be able to clarify that detail.

Epic used to carry the Trailhead deflators. They told me they discontinued carrying them because they wanted to focus on Epic products.

 

[Terrymo]

I had a bit of hassle adjusting the Stauns so I decided to try another set. Staun is still in the tool bag and set at 15psi. The Trailheads are set for 12psi.

I tend to go with 12psi now since I got Icon Rebound Pro wheels that have the inner headlock tech that perform much better at lower psi than typical tire.

I keep some of the Coyote deflators set at a higher PSI than the Over-Sand ones as well. As a backup and to loan out at the trail head if needed.

 

[dragoneggs]

The Epic Pressure Control Upgrade Kit definitely used (no longer available/in-stock?) the ARB Pressure Control module.

This video shows it:


A buddy has the ARB Pressure Control system (but not the Kraken), and it caused a lot of problems on our last trip. It kept cycling on and off until the compressor fuses blew. But in the end, I think it may have all been caused by a loose battery ground.

I have the Kraken and upgraded to the ARB pressure control system. App works great.

 

[THAW]

Yeah..uhhh…pretty sure we’re still waiting for the full installation explanation video promised some time ago…unless I missed it?

I hope to have it posted in time for everyone to read it while drinking that free beer...

I'm a lot behind on several projects at the moment, possibly due to wasting too much time on the forum.

 

[Terrymo]

This is exactly why I run wide open and just keep the low pressure at a pace where I can walk around the jeep and undo them one by one and still be pretty accurate in tire pressure of the evic display.

For some reason my evic display lags on the PSI and it doesn’t seem like the same corner every time so I’m not sure why.

 

[Grayhound]

For some reason my evic display lags on the PSI and it doesn’t seem like the same corner every time so I’m not sure why.

Mine seems dead on each time. I carry an analog gage in the glove compartment but when it matches the rig enough times I just stopped using it.

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