4 Way Tire inflator and Deflator

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Pyrotech

Rank III
Member

Navigator I

Airing down tires for traction is an old trick that is used by many looking to gain traction. Airing down each tire on its own, and then airing it back up can be faster with a 4 way setup.

I recently made this setup based on the following video.


with a slight change, I made the Gauge and airport assembly removable so that it would be easier to protect the digital pressure gauge. Not shown is the 2 extra male threaded barbed adapter or the hose clamps. and quick release chuck and extra fitting

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updated parts list from video decription

50’ 3/8 air hose http://amzn.to/2tCWsek

Cut into 7 pieces

2: 12’
2: 8’
2: 3’
1: Leftover section

4: standard bore lock-on air chucks http://amzn.to/2tCZShe
3: 3/8” T hose fitting http://amzn.to/2tx0xQN
1: ¼” brass shut off ball valve http://amzn.to/2seaQ8D
1: ¼” brass barstock female T http://amzn.to/2seuP77
1: Pressure gauge with 1/4” fitting http://amzn.to/2tz3WxZ
5: 3/8” barb with ¼” female fitting http://amzn.to/2szLVvu
15: ¼” to 5/8” hose clamps http://amzn.to/2txf7HZ
2 : ¼” Female NPT Plug http://amzn.to/2seaI99
1: 1/4-Inch Universal Brass Coupler with 1/4-Inch Female NPT

and the extra cut to desired length for you gauge and fill assemble


Start by threading the locking tire chuck on to the ends of the two 12 foot hose section, I mocked everything up with out teflon tape first.

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On one end of the 3 foot hose, push in your barbed 1/4" male fitting and secure with a hose clamp, and then attach a locking tire chuck.

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Attach the the 12 foot hose to the base of the barbed T as shown above, and the 3 foot hose to the leg of the T as shown .
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attached the 8 foot length to the other end of the barbed T fitting.


Now repeat with the the remaining 12 foot, 3 foot, and 8 foot piece to make 2 of these assemblies.

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Join the left and right side hose assemblies together with your left over Barbed T.

I then took the left over hose section cut it in half. and added to the T

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At the other end I added the 4th barbed 1/4" male adapter

20190106_145337.jpg and a Male quick release air fitting

This completes the heart of your 4 way Inflate / Deflate system, The Brains of the system is up next.
the control valve, gauge and air fill /discharge port.

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assemble as shown above and tighten all connections to ensure a airtight seal.

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add your pressure gauge, and your 5th 1/4" male threaded barbed adapter, and your quick release air chuck. Line the face of your gauge up so you can read it while using the valve.


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before attaching to your tires you will want to make sure the valve is in the off position or you will start to loose air right away.20190101_162507.jpg

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lay out your hoses and attach to your valve stems..

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When turn you gauge on and set to PSI, press and release to change settings. press and hold to turn off.
Open the valve and watch your pressure drop. once you reach the desired pressure close the valve, turn the gauge off. and remove the tire chucks.

To inflate just add your air source to the airport before you open the valve.
 

Attachments

sakiwest

Rank II
Member

Traveler II

279
Brentwood, CA, USA
Member #

16139

Super cool! I’ve been thinking about doing this since I saw that other video. Thanks for the write up.

(Yes I deleted my question)
 

jeep670

Rank IV

Advocate II

How long does it take to air up on that compressor? It's the single version right? I like the idea of it since it costs a little less and is smaller.

Thanks!
It takes the same amount of time to inflate all 4 as it takes to inflate 4 individually. It is the same volume to air up. I did not time it but I estimate the inflation time of my four 315s from 17 to 32 psi takes about 7-8 minutes with my arb single.
The biggest advantage is that I do not have to crunch down to deflate/inflate each tire so I just light up a cig and ignore other people's groans and envy. Hahahha. Also, deflate/inflate leaves me with perfect psi match in all 4 tires.
Yep, the single arb works great.
 

sakiwest

Rank II
Member

Traveler II

279
Brentwood, CA, USA
Member #

16139

It takes the same amount of time to inflate all 4 as it takes to inflate 4 individually. It is the same volume to air up. I did not time it but I estimate the inflation time of my four 315s from 17 to 32 psi takes about 7-8 minutes with my arb single.
The biggest advantage is that I do not have to crunch down to deflate/inflate each tire so I just light up a cig and ignore other people's groans and envy. Hahahha. Also, deflate/inflate leaves me with perfect psi match in all 4 tires.
Yep, the single arb works great.
Perfect! Thanks!
 

VCeXpedition

Rank V
Member

Influencer I

2,309
Torrance, L.A., Cal., Earth
Member #

0582

Whooo! Those bore-lock chucks are pricey! That said, i want need them and added them to my shopping list. Thanks for the write-up, my system needs a bit of a refresh and this is just the motivation I needed!

I have a chuck on the front and rear bumper, and have two hose assemblies but a very similar reason for doing this - envy of others ! :tonguewink:

Dan.
 

Dave K

Rank 0

Contributor I

68
Hayward, Ca
Ham Callsign
KK6PXJ
Everyone runs matched tire pressures front and rear? I typically adjust for load just a bit. I guess a two tire setup may be better for me.
 

rich414

Rank 0

Traveler II

Cool setup i have been asking around and called a pump manuf (ABR?) about the 4 tire system They said it wont work because the weight on the front tires is more than the weight on the rear. and thats why they dont sell one.
I dont understand their comment. has ANYONE had issues with different pressure in front and rear tires? they did say it will work if you do the front and rear separately
 

VCeXpedition

Rank V
Member

Influencer I

2,309
Torrance, L.A., Cal., Earth
Member #

0582

Everyone runs matched tire pressures front and rear? I typically adjust for load just a bit. I guess a two tire setup may be better for me.
Cool setup i have been asking around and called a pump manuf (ABR?) about the 4 tire system They said it wont work because the weight on the front tires is more than the weight on the rear. and thats why they dont sell one.
I dont understand their comment. has ANYONE had issues with different pressure in front and rear tires? they did say it will work if you do the front and rear separately
I do run different pressures front and rear, especially when towing my small trailer.
Usually 45 psi front and 54 psi rear, I typically follow the 4psi rule* using tire pressure monitors so I can see how they're doing.

I have a quick-disconnect on the front and rear bumpers, i have two separate hoses - one front, one rear.
I watch the gauge and when I get to 45, I turn off the front valve, and then turn off the compressor when the rears get to 54 psi, pretty simple.


*4psi rule: Measure pressure at cold, drive for one hour, if pressure increases more than 4 psi, the tires are under-inflated, adjust up in 2 psi increments.
If tire pressure increase is less than 4 psi, tires are over-inflated, decrease pressure to hit the 4 psi target.
In other words, tire pressure should increase by 4 psi above cold pressure if set correctly.
This works for on-road driving only but is a good measure of how to set your base pressures for typical driving conditions. YMMV.



Dan.