Jump to content
theksmith

Automatic Tire Air-Up to a Pre-Set PSI

Recommended Posts

pre-requisites

 

my solution requires a "closed" style on-board-air system to start with (i.e. one with a pressure based shut-off).

 

this type of OBA setup typically includes a hard-mounted 12v compressor, a check valve, a manifold and/or air tank, an emergency blow-off valve, a pressure switch, a solenoid or heavy-duty relay, and a quick-connect fitting for the output.

 

here's a pretty typical example from Quadratec that uses commonly available components:

 

HRMj5_P1SGFXp7lcrYAbzkgK8mA0_DthgbF7MbkgyhUwFJk0xMwrdEBqgDt0cbC9JNSQOH5nnKANChk6c8Jb4gzz-VcZr_a53pshVG0Ydi4sK4pwmzBBfGub6-n4Y9YDMq4uQ5Oh50rTn3FCRLuMtbyIVDNqqx4tWjJz0kcSjz1Qb_RxtgRr0mQlt9rFAY0SFCibdkLiKq49QxuFzuQNiOKsQjFmU4j8aLYO5q2Sj98a0eeaaNufoYoPUarqcS1XMQXKmjgWjzjARYuCazGE8TYqVEchTuYQ3w7PN7upbVihpMG970o6-PoMl2Yv6ounzKh_unA_YfzVohS9PcvXBTZd80BXihWHU3hox3MJ8ypDlJfemYWK0ue48-Au63Jpy9f4eDt0_ybN39SUnAsYxfYazm2WvAvRkQFM0jwJgf2o6ybFk1582qHVqDYKKB2exH1lzqYT4VtySrR1IgpAPP91jxP9BoneBzLjW_6jDRf0F8CxNFlfS1OTrUzX0eYpXmneE-TofDMh8Xky0s2e2outFEAlMA8Ife07tGMGXaEhEwwJ4xmemhRLD0SPIbfucc-tMIx4kQzo2VVlpgr98s_REkIawHjEMi75nHYAZfpck-PqVAhsxGsKNvMtHnI7UPd6yIDKjeuXsK2EhV31FO2l_RYfUvo-q8ZxG-Z7HcA1r8g1gEZ7Tm3xCWxJMKjC2XpQhCsuxgVedQXEeQ=s800

 

 

the gist of it

 

you pretty much just replace the typical pre-set pressure switch with a programmable one. but the devil's in the details (the settings/options)!

 

ojZTQPbWpkiDZbl_uVvHj1ZCjdCs4I_lU2u47biPiw8QKKvpn7Ok3q_WlCnXkQyK1lwkIWr4r3zB1r2CN5YztFbf_GOV7u-XGg_3QZ3vpKNJfQnGk3JzxJQKcqMm_DGsaceTUxGg4HYLlz88BQE6TJyyWl3M1Ha71LDiICIGK1RM1O4W2hPaop7U5N9sgjtTLr7vSwSEQu2FwjTwMb7iheyxLt0slimnIwvKkY9PL5TtiQFBoBge7Xuch7Hf__m2HE1ORr3eQ3qrfxX-07yggnlmEz7y3sU9-me6INYstS0xtfbdeqedEhcWYcCgxjlN6DHLgI8cX1llPg3CoLa8wj89AAUqBOQmzZWF7UpxPBCex1P1gmJ1b5cR0a_86G1GXgEPHDOcVgBrn5iVToT8180a5fPEOBEREPNIzn8oI7PwaSyLYLsloqcWPhfiTKsU-ELWG0PKuwXIGb60HqsytUaU_atQ6QYu5C9CkCT2dSdLXpnaJp4CiREVO4P9TGOQQH-eqoLQ3IrP5CO8TJqI04-W303L7tuPcPrfav3Sq9gkvMlROAbWSISwe7Jtw_9FRpyzc50iLKKVeUZK3s5tr5GTQmNpD7PkckXIIbjzMc2vT-7wjW3OiEdOoVZ9tK3xSJG7xN0QXF--apyNPSudUadTZFv0kPwIMyPvufWHTu2ee9s_8CeddMlOEFbRfJ8jIaekZ8p09U3_F7jWSA=s800

 

beyond being able to set a "turn off" pressure, you have to be able to set the hysteresis or deadband (i.e. have different turn-on and turn-off pressures).

 

an additional time delay feature is helpful as well, to prevent relay chatter under certain circumstances.

 

the module i used (QPSH-AP-42 from Automation Direct) was about $70 and also has dual outputs which came in handy.

 

sLCFBhrWjucoPeEEPXGXmhcZeyHWv32AjXG7nzEMZi3gdVPI_KIshFYliokHsiC6OIScIkbvTgZKUMOBPApxbyo6s9e0Vav9vBZQyIZrb19YXCU4q2xnniLZEt2Rx-wJEquYWu73plu0_-w9QSR-yX_tGzzpNbEzgoxEPKHt36o2CY-pN0GqefVRXeoqfEWKZohoDgAXbOVasNLUHt3nwMicwxF6a60n81aQPVq0UhunG72NOPhRMvogntykEMulPce48Iy_bLO1WRrFVYAZRlqt-zxx1KPnZbF06Zwhj8U3ZCpzA4PBqcthYlsxR3YFVr1Bd9Nabp13GgHqBQfXLLREdQstw0dU2Qr3fmt_u8N3KRctATA9mKV6MRokfUkgSxOZjt-U46w7sm_G2JSmFylmpMq6PBXG-fw0b5oKDIe1kAsmOUs9GflJzdQk-X_6iN_XZMIzFq1KNbqpauKMTfz_BMkdXyVW3eO7N6ozz3Zh-R8QbQcZGIJR8sR2DBG7h2P3kKaQ4a5aFr3WFMdkV9T1nbzQCPHtD41JgqmKIZ1saulpAZBNBwdKwzXiXHyEktgTiSguTCjHSYqWyZ8CFuM5BxY9vL9YOzuFAVF9FgwhtmSkI07LEpoEV36jP7aIgnS4H0WKj04E8LO_Q8C86RDFVGbRiIrmidBikn4Soao4tyyU1FJEWdBvaOIfhLYl_yPVy5yq66gPzD4p4g=s300

 

 

how/why it works

 

if you've ever had a compressor with an integrated gauge, you've probably noticed that it's not accurate while running - they read higher than the actual PSI till you turn it off. you might have also realized it would usually be off by a consistent amount... that's the theory behind this whole idea.

 

for example, if you wanted your tires at around 30 PSI, you might set the turn-on at 30 and the turn-off at 40... the exact split depends on a ton of variables like hose size, tire size, compressor flow rate, etc. - so it's different for any particular system. it's pretty easy to dial in though and a 10 PSI differential seems to be a good starting point.

 

fi1Wd1GXvr0FKJF0vtLPEU76ixE4SZyDcJ-nu2zYoHpXZ8Tx5jj9gt2YudbR06cBJTz9vgPfuubkYX25oH9_NjHGAtaVe5s_6MQiMcqziY2Gx5nBYTFmpWNYE0jB6jSID2Z_mYKaPsb0X0z0xkxd75-BLKtvxk5y2BncxAHUoTToniqsCFPeqIQoDQdyQFbrxye9ejyNqk5wUyx6_DSACInlARxFcz9ITK4YhdzzI1gf2fWJsU_S6YR3WD1MuL439F_OZYPXYGqD7-0anAGQ7xVmf2GRGEOdOvGazO07gYf99CXeExkQusokc_oN68LpGmjI9RjNBa5R0rqGUxFTHjq_1jUbsLBXpogoOkyGS-xmKgS-3onL9kcO1SjMn2lUmNfTPxvYDKrejDmuZdA3Ns25RGVjwxkEd0_hd0eGqNIxTYRIHpvtxZ6J2GJddqv9ANSWPYRZdVelMKQzHOBDIQfwx2fJvt_CGKavY9EXX9oymLdHcwjQ2pBWBkXIQuyv04StIjh7wLQvGfhitGvnn9jSSDhvlkqUhfCzJh_n4OLKu91pThNrXFP8Cn5FD1PImXsZIhXattiLY68SmllTdpLCUNFjUYcOPgPLnGFn8_XA8mSEPCcUrdQVkm1lNxe5l7Xo85M4dpmwftPZQgrScM8I7UAUquf4Jw1WpclghFl5wUr00FlwAQSA28pLYM8RZ2uOj6A_wZxpP1yOnw=s800

 

 

wiring

 

i'm not going to go into depth on wiring unless someone decides to actually try this and needs some assistance.

 

there's a wiring diagram in the instructions, just be sure you use the second one (for the AP series, if you buy the exact module i did anyway): https://cdn.automationdirect.com/static/manuals/prosense/prosense_qps.pdf

 

also, in that diagram, where it says "LOAD", that's where you put your heavy duty relay or solenoid coil. this module can't handle enough current to switch a compressor directly. if you need a good solenoid, this Cole Hersee 85A continuous duty one will handle most compressors. you don't need to hook the Analog Output to anything.

 

i wired it up with one switch to turn on the whole system, and then a 2 position switch to choose between the 2 outputs on the pressure switch. that way i can easily change from "tire mode" to a higher pressure setting for tools/lockers/etc.

 

 

continued...

Share this post


Link to post
Share on other sites

Do you ever get tired of being so knowledgeable and helpful.

Share this post


Link to post
Share on other sites
Do you ever get tired of being so knowledgeable and helpful.������

 

Aimee tells me i'm "being so helpful" all the time, but she usually rolls her eyes when she says it ;)

Share this post


Link to post
Share on other sites

settings

 

it's a good idea to configure the module before you actually make the final power hookup from the relay/solenoid to the compressor.

 

below is how i have mine configured, reference the instructions for more info. FYI, this is assuming you use Output #1 as your tire inflation mode and Outpt #2 as your standard air tools/lockers/etc.

 

in "Pro Setup Mode":

  1. sub = std
  2. dsp = 100
  3. hys = 1
  4. pos = off
  5. dpy = out1
  6. cod = 3180 / 300 (this is a read-only, it's a quick way to compare all your settings to someone else's)
  7. cpy = don't use (it will say off)
  8. aso = off
  9. rst = don't use (it will say off)

then also in "Quick Setup Mode":

  1. ot1 = hys
  2. ot2 = easy
  3. noc = 1c2c
  4. spd = 500
  5. clr = r-on
  6. unt = PSI

and finally in "Run Mode":

  1. 1-H = turn-off PSI for tire mode - example 40
  2. 1-L = turn-on PSI for tire mode (your desired PSI) - example 30
  3. 2-P = 5 to 10 PSI less than your desired PSI for tools/lockers/etc. - example 80

 

2pdccxEqP_o7IoU26OlhHaT4I2mfUoup-zSTYGcSysSNkSf_QK9432WM4SDKYSOMLJqCeIRVOcaqk7WpwsSYrO1c42jJdX8mq6sWKbzA8kAgalg0TQZm_sLFxRXt3CKCLWjej_IxjJEFkpngHyr0Pd8N_wMveTPih5CPvgSl9_gRGadRyijTdU1vWtwisNm6KjtxQEyH2lIja9ddHLlscse4Z2_JwoYLz8tmpKPH3YIHJzbpEb36cjo_xKk8bAhzeOBDGialakp_iwF_6RMDJYT6AlhX1IUWIhE-HfJ3Pt3IfvfaG53LkBLBkid2l6FHvkSW4kCBnSEJI7Rif6DPc2ipdYB2viuc3PeauhMmJ-i2b6Lz-F-p4jIxwX20RINRUzvvq2IDbb3bV86Ty4ufE2YHmnLP-0gUAUR3E1jBgb9yiWXyFJpt6g5TA_s_XAmz3O5R601wTy9_Cso2RTDCR_DyS_GujQNTna0q6v3PdNfqmgYsZ-dlYCqIzWv4WBI0r8NH8ujFUwWEEN_bKL5aJU90P8TrZgljU8Mh_nuha9xCu-hhJGh_s9r-UZeaCHfrVWjN-sydA9CHmOvxVAg29yGFQIvR23OtE3yaqAckz89BpGWxAc5JAFCpE-OsG5uKYMMXgAhTN-KXHk_rFwmjbhnecictxX9wbTL5ux0fG9Ey83yaxSzGMlA1a6vW3YQJoCbPb3CywpTMfxvdZA=s400

 

 

dialing it in

 

when you first try to air up a tire, the system will likely either:

 

- over-shoot your desired PSI and then kick off and stay off

- OR, under-shoot, i.e. kick off too soon and then keep turning on and off till it finally gets up to the right PSI

 

a realistic goal is within 1 to 2 PSI of your desired pressure.

 

- if it's overshooting, then lower your turn-off PSI a little (setting "1-H")

- if it's undershooting, then raise that same setting a bit

 

even though undershooting will still eventually get to your desired PSI, that kicking on & off over and over can wear out your relay/solenoid and probably isn't good for the compressor either. the delay (setting "spd") of at least 500 (half a second), prevents relay chatter at least.

 

the final exact setting depends on many things. i hand to dial mine in again when i changed from stock to larger tires. my current settings are actually 1-L = 29.9 and 1-H = 42.1, and it usually ends up at 30.4 to 31 the first time on each tire.

 

for the output 2 (tools/lockers mode) i am using the "easy" config with just a single number instead of a off & on pressure. the "spd" (delay) setting still applies here, so just be sure you go a little lower than you desired max and lower than your emergency blow-off valve! mine is currently set at 2-P = 80, which turns off pretty consistently at just under 90 PSI. my blow-off is 125 PSI.

 

Elt4jUMXygDN0yWXoWHHer0m8-YxTq8XoxjemRQlLatact_qQOcj3XALig-nT6BdsfgR3fgoDOdpRdCpuB0H5RIBsOZ91ByzrLvXUe8Gr3RGgVQAwtX8HQKYw4sx2Y88PVNX48A2Ay9yw8KwZ3YxfRJzLCkae91FDoG7rBTZNV-ZUDV4MlhNpybGLpDKRCb2nZkHU0aTO3WW1FbyiOT-x9bOcW0MM1rwYEkJsdjqH2n6Jr2b79BYB_SntlJx3mk8SJGLWhwhbFI9kZKujK_RO6myVGABMQm5Yq5M8Y3cOoOfRP_i7GZrIcCH8Lc9IDyeagt6TrEeKNir2cTPmlxOASQrep3CyYqx0Nrw6kUTt6A9VQlcRwkLlhJXhrPD1Ad_9Gyp8YqgpjDSrwbK9nvWwIwJZc4LnzG0vmYYM8U9Y5yw96sjTvl8xFb0e8xfVefqe6HX5w2XDFr9fE2HoLsbmUfoTapayznkrxq2PI2AGGMQ0OOMskH4jwtIKV4sfNQjkuaHMRLxM6eHT4YLR5zC3NGEMg5rWDCLvMMhGyveBr_uftJ8SLAJk3A_cqaEwozuksYaZFaPbahA1GFIJA8nT3f3hnEfOVAXOrZ_x59FR7F_PwukamMmxtKPf7NfW3-CqRyj26ClYMBXTy372SnEQTMuYODotmM6tNq-qRo_EM-9BXEh14yMTgXTQPDZG28TUEzrtzg9uey53sNWnQ=s800

 

 

gotchas!

 

2 common things that can affect the overall rate of air flow and give inconsistent results are:

 

  1. the voltage at the compressor... always run your rig when airing up to save the battery. even having the A/C on or off can change your idle speed and therefore the system voltage and thus the output of the compressor.
     
     
  2. if you get a kink in your air hose, or don't get a good connection with your tire chuck, you'll here the compressor start cycling on & off.

for that second issue, having a quality clip-on chuck really helps. i use a Haltec H-5265 Standard Bore Lock-On Air Chuck.

 

r8DTdrEDUFEPByCVLeID_YMX42G2mypJMn-Wqap-v9NRLEHOZYX0ZKpDYwcOk3mVj1k0edoFAKi3OKQZdbpOJSImelvSO9aLZghs3Vv4cCAoTINPplrAl2jF0Tv2m9WfHw-Y2pcYBStvB7JOpEet3SoBOBmoR8J3uUkxQqBG5VMbhQrhslqWeyEluSudYhS-iLZCWwNki6Hv54c_5b4HYU9cc92iAF-pzIEiHhe1-28HJo-ElvRJ1fmDXzPwJhHcpdAsdEDAwguTDiVrtYvB1RF2jkAGeJ6aORsqat22epsMS0EBZQh0XA_dva1ty7MV_YBL-BtzjkgHBQd3QeMAGJSaxvarEf-UjkNZxk4y47IspE6ZAQ8fdORFk6g3yVLTY_oOkKNks30Hb8yFtLwvI6yC9z-fs9w8tr6nCU8tscwwjYIZcTm6oe_NXfkh0CYKRQ0jnauO53S0PXd1ysv1UfhDVEiRka3_oxb9k-0f5VbvfEJZ6D6Zc77NSm-532uPb-XxvoDCsNpZV1h_SIoginLE_FwzKRL44rKgODPLXDqLAHtoQ-QcYEowPP6vioiENy-VgXmq1ACJmlxLed_md4deC6RovF5lVQoyMgFPWJMc2AGcGTyR2cbaS2NHWZVXnatoUomidz8gA_oqEzZ9k_IKs-QF68Cvsr-5EpwzgesxmjMzibLAfmpY-PDWBlcciJ8uxpPlbTqbPPQOKQ=s400

 

 

conclusion

 

this write-up was a little long and probably sounds way more complicated than it is! if you already have an on-board-air system, then swapping in the programmable pressure switch is easy. dialing it in can be done in 30 minutes or less.

 

Bradywgn71 is about to add this to his OBA setup. i'm eager to see how different the final PSI settings end up since he has a different compressor, tire size, and an air tank.

Share this post


Link to post
Share on other sites

i upgraded my setup so i can easily air up 2 tires at a time now, without making any major changes or having to run a bunch of new lines in the Jeep.

 

5AWaMwOPNUXCi3px4IghSfY9c57Ar2PrZ0f14P4RfSkyfyJoZw3JGR_CV2J7I6HtaOC9KgHRo3hatCM5avejZJNWQZWMjKwq7Zo3_xyWp0JCSfbwNddNV99RZfT_1CAd92hgrrD23Dw_yzwCcfkvlsHJZ73oLxUHl8dUHzXjnkEj_sApQU9WfL8bnjBdkNdRRoBFV-pAo0kY5yoty4Ja_roSAVo62LHyLkkZ2LEbrQVJVkdQcKFk5luZ9gpx06U_wKiPNng7X2ZDSZqi2pO61pPk8dSz8lF40lq5yZmbr_Yf4uZCa6UIj1NjLErBEHz02vHo_ljYJmDVeRmknrRVdyMDuaxoNnaFchHQD2JGE2mnvHLPhtLOpqdsGd22czZX7eBR0LUjvlYk-D1rnE0Km_ct9sHyQvlMquW8L9OBlnqHBrhotnj4s_UinMLT8YXfkXu1X2yQ0XF6iM5Id60rKjkS03MEQg1-0L7YJX8_6tnhReyx7tcaABYpFutwzZWYsvjhnIOwmMVZfAPQAlO-c0iKOaEAbDCbcOuI3RjFAMGa1l5WNwfWdL2zdozRPnIXTBqdL681D2bKKHk2DbIrm-tYx7elrEdwtJDKEv13pgzlmSQKwkUH1dcM5SaIO4Z6_NzPiJmOpKujZUPECnyH0oSkT_K2xCWEGN0WLaycY-nkbcv5dzrMV-o3nwe30s7Z1o-wjigCwbqSb4GXaw=s800

 

i joined 2 Coilhose Pneumatics 15' Flexeel 1/4" coiled hoses together with a female-female-male tee fitting and a second Haltec lock-on tire chuck.

 

-MKbbh0TEq3n2XxL-T9S0dQ4c0EMfROWVkGh1jRcSqdsc-wHch7TPhNuXK5bnYa0HH5FO7NjTe70-29gYtqiBR7eFbn4hzoBppp2xET_ze8_iL6Hr9uQZeX4BWFjec5a1CloBsWKd1VDXCx-MabKhzM4QcCWj5arxUju0f2EmYSWB2Q8GlQskqm1_A5ZqjUSYGuQkmcxBGnIW3XqMB4SksXotwZv0L-uJQOy2TQqUe40j9CagfLj0dhWzItzDYQUdKGjuuTzySwPpvr4b3KOyCuIW0PcMOVvUeJsM_snAE-Mxwcumo32AWq4pbdJZgt-xiDGk7QtxW8hs7oxtl41PXg6UR1zCgr_Bcc4SHKGmXPyLemCg66cW54os-P9E-7Gbg-_YxCdNl7kIs1l8oP5inpkF3lEgKma3yGrdz57a-3h0tiNepoiFEaE-hMGmNysnRkRe7OPozekmH7xiVQ6_pkj35-ZgCPj9JHnw9bnH_ZKkPi9VGt6y5RBHkNYrAFCwraJPZgCopulOZILgofrnqnPRHRB6lA3w6i7_RdUAUdrSnMBvcC9DbMLWbpIk9RrIF661XhRoxtVRJVdBoi2S3-gGaxxHI03HS5gGEjjosz6Y0aMxyQfrtLx-N5tQ-n37mldP8EsX_nJQMC73uOZQOeOMYqB6vt6XumYiXN8bIEMiRgl1ks_4H3faxZ25OuSqu7akNnaF9u3loGGTw=s800

 

i have a quick-coupler on the very end of the hose so it can still be used for air tools as well (like the blow gun i keep in the rig to clean out the dusty interior occasionally).

 

i also switched to high-flow couplers/fittings since i recently swapped all my home air stuff to that style (the one shown here is a Husky brand from Home Depot, but all the V/HF/high-flow coupler stuff works together).

 

7ovYqiQfq869VWXSSaMeF7KLtu-ZtCCoTYBCVskHzGKVElQB6TKqla2NcL-rOxW5X3hkM3dJj4U9xfpyF9tzKkIMQziF2ROAKM_MSYpulUkjGY9tNqt8jy4W4sBqBz9hhEWz_fIVvL0KAPyq30e21JPzq67TpnPuFJ38k9Ky56H8nBuTkdZyTmYeZstPqQwtqW75AU11QiFTKtUEOaxeFAXQBghmTsU5FmVBMUtghFjvuIowHbCK7iFKxj7FcNSmW5JG-qi8b2sp7dmiYQRYXUPRzKsSAP5-eQoWQpW4slttXIuqx3ablUHlnZpPk_H97md7OCntSYCf39UnzDE92LAt7vu_KkiqydY4TvX7VeoTN8Rsugzyo4JfkfEVRi8OF-NXGju5nawVxBboMxLoI3a5un378EpqR5NjfQZQwayAg3ODv34OtSk02JckE6s1YJ7HupagB8T_d_7Luj79oun9Ev_gyEeBM7ne3fai51EfNvRHe94Nga9V-o5jBAke-XiU-LT4A0_sInJk8wnBOTr5fHgRoh2-rLtHoZr5NNGq4zZ5Gdz4j2a0E5mUNSB2JqKfgzoK4tzzzYIOX-qIXkGIRPNo6kKZxRxcPRXBAbQVS-qSKK7Veq5hETMbPumJ_wLNfTmmOrvSZjTzL7eg7zScQwH-afrDEZiRpumifO6n969DQTBnCVcTJdI-m9iU8WYjSxPvkRqc7etfTw=s800

 

the flexeel hoses have a nice small coil diameter, so everything still fits in my rear cargo drawer.

 

b0vjkCtdUQONklPiZ7XrPNqrnuPXRVioQQmFNkPguzPOlomGHi58MXb1smqm9QLNSUeBndrIQfMr28jcqU0c9pBZz6ukyLsxn37AbkLs3_q8JgSLuZaj0OLdBsxHwA05g7RfqowGAzbdHsb4AG4hcqwcCpO0_BSwJw5hTitD2SYY-C4GLiFocNa7z81eccdSQXPWUQseOUcR-i0-7zQLVPi-dpsQUtB_r3iV0z-Du2ee8tqhYGlBDjtu0osXWinia3xt-iU2Wzkp7hwni894Fwby4eG1_9xK8oL2LIZrTfRkoPbMh6S_IBj_VX1n3yQUw2UZJ9xCXFQDabwaS7RLP5RnnG3GlxTW5yUtFdDMHkFdTcFDnxnCAE_Wrmqb6_e-UPH-MWvwquTm373tPx2_myDP0iyG_9L9DlmmCJ8N52HhHt_bz4M0Ge-s6bIIsr3NaYSL-KHg8KO_2RDAMeF7g7fAfy9tRQX3qO5nM1eFye6SdIqRbQrUVxxRplrwCuSdnmumTCmgOwdroBvCdjQyNbMDeCrnoDONXug4PHSDndrxYC681IANZ59nhAKkPZ56bZE1iyCiaZmcfwxET0PK3pTthAtUzj_-md1eYBp4HN4OTeYtiNmnPQ0Ho9u82mB1pWmdnHd2Ug7_vekShlMsUhqlg-7-WXFj-s6EC1PfRb9thACMj9k-ZvU6310t2zSJjs5hksD7Y2vYcSslew=s800

 

interestingly, i had to decrease the upper pressure limit on my programmable switch once i switched to doing 2 tires at once. my settings are now 1-L = 29.9 and 1-H = 34.5 to still end up somewhere between 30 & 31 PSI.

Share this post


Link to post
Share on other sites

Looks like a cool way to do this Kris... Nicely done... ;)

Share this post


Link to post
Share on other sites
Looks like a cool way to do this Kris... Nicely done... ;)

 

thanks Steve!

Share this post


Link to post
Share on other sites

i liked being able to air up 2 tires at once so much, i finally ran some additional lines and fittings to be able to do all 4 at once...

 

x45VJnTT-0ASGgiiWG2rnHu9mrWTlWm420NWtSQgwAdMAfam5EdRJ1eUvhf33gPlAm37sMWDA8OQ9YkVT8g2-gegdTNAorGZWiMWol4uHUH2hP80uLbzOF7mKza3xI7nq8pboAMfUWh4iCejbZcPWhQl2hdKevXsygB4KVUxgvyHKkm-ySOstv2tqGbu-MVU2luv0p9GmGwyKnWRgSl3AwwGjD-qaTHY5Ik1Crex8XGWDdi-UKpzr6z0K5V-Geb7D8ecjE6K6l7jjEppCopjcTjTfvHQLx5g17rEDOogkxDQL2afnvb_aqZoa9ROMyF_fb8gtuC0WRQy4mBU7Q9z0P5ip6jdzTn867t7HzuB51WI3r_DuCp7BTYQP0a6YBWxrng0V1Kn_5c-0cYwl9CvQ_q9KH5NFlRpZolBOE3shsVE08qPCtrA2kX5htE95moRtmdLQp50hq8rEYum0Er55MGrgs8clybeN7akDVm1_z_LEcDvzCWqQkwM4T-DyeN75ZzlG1Rbt2ApIKslvD24ctWcEW6S3s2xp9QH7Q3YFHf2XuQdpwU097EYw-dwyjZQlPq0pYa7OrI23MeTUyLvrGZkKL5Et8CPYFN5JDwhOSqtHg5wEDy-2MPfbRNaV5fFzG2LcrPyl3blXUCvKcBWE_aK5HAazdpfOWCHoEAIX-gFJkolSfEdgR6J9dQje7wAf9rDfwCeTKOcecYwM87OKdPnOg=s1024

 

of course they don't get done any faster, but it means i can get everything started and then have a solid break to go find a bathroom spot or just bother the folks with regular inflators while they go from tire to tire! ;)

 

i ran semi-rigid 3/8 air line from the compressor up to 2 new quick-couplers at the front. standard brass compression and/or NPT fittings were used for all that plumbing.

 

IDf4AIVyYYmPDZsUznKIyZ0H5Bp-PZsH78Wim4VB5DWNJtObY44p0V3N32J0SCK7OUdy0KQAWF_KdHalTxMYGlheZbyeZkrNIUymCXPWHMBPKv6x-1-2jCMGmfxhDxXPdZTgHL3mUr-zFg7yX1RJz2UanyT34_CXAHblDOa3gn008LNBSgxVMNItfKuyGmcsl0ZRYDS9NBIhOEZUK_mzp-taMRVRFQ-E6ryGOqKubw_Ss2JnAkFwbu8fZXixVwxo9mea7cp3TusQVe1T1d1gBBxsRGZ8bE-jhB8AgP-_t8iSg8ZdvgiaemMAtpzR41r4DuZGNLuo3s4RAjPAAuks9-uHkVQcb8WUPvUpz-Ltj_DDcETM56MnKSh1VKDx_BKS5iGWUCmhvnqC0T4S1HJwc7bSZ2A4brzdBM-pjedZWUoAsdqIocytAxre73ZP8ztwUeNdR3HNKlJSt4vDseBZtK0w5Ar9Q3vJ-9IV0Fh0sRazgpD9-BMlT7OtXxtiMzCe4YXGzRGo9NgGulJMtGb8fcPTsz5kNeg7L8xxr7DkXa7kIsfYAmvoWlVmZbZRsx1-QZ3BuZDgDdgoxyCxJzjB6YTG7RD9fMx3UxOVWnsFyEF5WoGhg7euUK4ADJA5i5Du71rXfWmXWKpl_dN_4wQrLirF7VgmH0yxPWxDfdu6WUtaGS8OcYLAPqKP5LtGhZrQmAOEFYp6VdSzdQAEV9ZjrOTKvg=s1024

 

the couplers are high-flow (HF or V style) and i put them with the winch because that was a well-protected spot somewhat close to the tires (to avoid having overly long loose hoses to coil up).

 

the dust/mud covers are Dixon Valve model K4DC. they're made of Nitrile and i'm hoping they last a little while exposed to the AZ sun.

 

cHxwnrUNveG1xh9eUKqoox-vCd-3iDMxEaJRxpWlIkPW8xWpIVK1wUJ6YowgvG7QYXYMiXWMbWsOPnYzUFVjbsc7RLQkP83FYpha75PBxJbdsg2zGv8-9lLHmMVhddj59FfGGbjHR81kjI9D5GAuDhRxZYghDuMiKdHihwvEcfGiAGKCLbLtLY9vMRcAgUvjG-KNtpQkmjXUnZytzfnsYsJ7gVTkbLEXpJplO3csb0ljS8-VMWzPafYBNx3bMHmFRCYK63_aQq4HvnvjGYz7_Wn-WeqOvvDRrjDnS1MhF9ivm6dNr8M_nxAW2tTLP5AGWIOXfl2VXZW4dMwcOoHQ_lsJYFejTGrRz4UhjVzV9xPDjLduGalbdIrbFCASJ0lvCwHyzt264lBULqy0Gob53KXiYLR7BMp-IsRsbi-zFvHZLJxExP4Vi8CI9qouxMBosuI_uSYbkJHMwVWThx6CQgO0dn3WoOVkGO8_s3Qxz2NEI8-l73YUSeExs-PFwV0CaW8QITj-qfa1GhNz_688fUW1ZNHxTk1ZmTRWjyM_95Dpqzqj7nuZUTEPXZ_TtUFspHmq0AGHz-CKQQn1AE322bWuSE-5LWoe3DxeKIyQ1dOXLh83bvqvmmJaK7Wn7B_5OMYxQQFgMohEXqSJfCIj3Gj6sNl3pOxVgai8lOR_mUmCgD4DbOn7Z7UXLah0FVNbH8GGX8My2YMNvFl-jyBMlRYXqA=s1024

 

i made custom hoses just long enough for each side from 50ft of Coilhose Pneumatics' Flexeel 1/4 reinforced poly hose and several of their reusable swivel fittings. the swivel action is key to making the hoses manageable.

 

i'm still using the Haltec closed lock-on chucks because they just work perfectly. the chucks are attached to 1/4 brass tee's for the front tires and then to couplers at the rear.

 

6rsTmkjgop5E1P-1okEFufGA7GP5Sul5S7WGA7pN7HL1xQvr1vy-OqQyCTAw1AOIH6v-1IM1rV9GV8Ws1mKbAbVOooFTMC7Gl8oz2BXN89H6UOgls6sk56bO3NnJjMCsfIwTIkLGCHQgmtxG-maG1FDGjhVW6epOlo4JLXxKPRU-cFpHA01fczOu6VM1SpHaqNbIFv5AF4NnaPss6TYHcm1FcGx3BSodknTHAulnr5rzXDanifTT6Zkd4IowBySp3heGuGaQZhyAJeu2cg5Wu8LCBaui2U1UDekJOnd-F32nBDtP0Id7Tvjt5bxqtEeA9hu1NFiH_uD4aEKCQSQ8D3O7qIzlA9xucyDB2hYUvEackhKe2rmC8uKhxUHhBtcMwczQNC9QuOeoVSxPAPAPRIoGHJ5MTIjxkk5R9ikj_9FG3OEQ38CYK45RLc_8xXb1gQx-L8ACQ8Oa1puKW6mjxpG86qP01qMVR2X02wN_rgKDdzXmoeVsHberJJh-yVo_ciJhVQQxL0hSWT2atOwwWdYrz10Qf6ity5d2fXcUUlbrzpoO6A954ZwtiWNe4t7p6699VUWnKzdpQiy95Wi7mEHiQFWKAb1vSbh3vI8Pn4uUfesLdUMxxTWcWjvJvxRR5q_ak6hZHM_0SHRNP-FGuoqOEo_RDGCRHQ4tMJPCoI1yY0mfgnz1EunsA_kuepTKih21TR9Eb-7XWgf6FdSfn6zQPw=w1679-h944-no

 

4KfoV8o8jUCFfovEEsRhBcey36TpcUscGoPA7CFGwxFGRHs3bblKmR_4Q0RDSfe9WzIAc1CWXbtDw-C0jtHl0cmdRMNugtpHNdbRCqeg17smLqq_osr2lePZHKxldWVyOaTwgJwGmCX1A4qp3KxoOm2pZVZNQUys7WABKjv2Iy82RuPVoTxgElqlnDOiuDj6j421Bvy90kygchtgwD1j07hA4ZC5NbdmL7MhnsUE9ZbNLYTdMa5oXIaRFCONugILKGtFVx_-H8n1cOx7Cx4g0fwAaIYOJTF7aeJRVIMDTaU11Nai0d4x7rBGbsyY5FwOzYozffr2hG9y1PREmTXq4cweZdyszrlp7mh7oWktLBksl7AO2F6yKLDINJtZXriS5LBNMx5BWfNZtr7Azt6XpIX3E9GD80X6A20TF__SCB2SoPbx2wWZ_HZ7Swet8g5U_DkfP6ijxs8Hbn2HNatst37WipoIQ7nNpEGJq6Vpa-0n2n3S0DBCuh7-YqxLEikV1gk6jMF_ZkweagYWbjq18fvXEAr06DIGzCL8e6Zwg-QAYZgKZN0sBwsgUDnPpC3eonl7BZcR5zmFWo1uSetMTW5aFVlCbWhLF5NFZTFOMz8yDwqN2KMC_rn_-HSogZWfG9GejGaNQlJ8k_WJCTq8V22MtKGWYdkW3Cf8zV-moyVgD8mamgpmpLEUd4ka1zIMkoaKeOu_QLmpS6ff_lsCW_DKIQ=s1024

 

after some minor re-arranging, i was still able to fit both hoses in my little quick-access rear storage drawer. they stay coiled nicely thanks to a couple oversized velcro cable ties.

 

__Aub_futpbuhxuOb77ROXSU1IFDw3owCwn7eKup43mpvi915hlnbEpfBA7bU708MKD4RIh7Ynh2uhTDIiK0luvRidBUxbnZkjc-Hs1SWNrPRxShGl9FCZDqd_DclspLpwX15sCXci0sXRsufFTlurScb_yDI21hf8gG_UZ7EhVuvxM9N8GbK-L3gvdneZ4_y1w-d3I42E8KSmi_YUpIOqaNTG2g28x3Yi6kMA0hBmHx9nAcOzRnZ1LEcKEL1bZJp0XkgZX0EQ5HXiV29cOTc48mniSr5z3wYQPA3bLqyg9Hba6ups2oTf0OL7XpAhC-uq4-1np1gYADVBy84HC2MUdUdt3va-oZbDHV9_B3s86IY5tOGC2tRyrKLAY2pmwd_QWGOKybavYca_JJBgY2GR_QEKxE-sMHqBEobMBKYLARrH3Ll2peqCGh-bOaQolTuNJ9OC5DhnaOEGe3wvPyBLuUbY_LU5H5NiwDZGnENOkI_ygmVbbih7PcPW572lW5dsZTZ76Ee83pnBeWHdDbavJVfKgCO2uwCb3bzb4Vc6YwD-QkgbdRkFmIFLVKV4_mebNIK4KH-wFDbBt_SBm87euw3LC1ZZBeZaSzpTeTsCgXA81z6_uXXwkBlM5P5RsWlHJbNjJ-2PjEvR78BTXKzmLEwq_Pzn_1Ox2zmUWEgWm1lYJVTrwUBetrBGeB5y-OfNiCmbYSOhoOT64YTbBzLcIVkA=s1024

 

i've been using this latest version for a few months and haven't had any issues. all four tires consistently come out to within 1 PSI of my set PSI thanks to the programmable pressure switch setup (detailed earlier in this thread).

 

this wasn't a cheap project, mainly due to all the fittings needed, but it's a nice luxury that gets used every time i wheel.

 

XRXlGYhanoY0RhqAsjvQEZtsUf0EnokAC49243Db59WR-_dC_cZhvd5BbNT1U2XWFNMhpu3Y8P80B14TQFgBj_286QavdbHw5scwJAWkcHkpPDfLVHlJfMA2aw3BNcYx2ZcvlXwIg6zjMFIToOcY7TFtSCoBar5l9WjS6ezs7aIi_AMac4TukVc88HjvUC2azFCnfWF7OmDqz4FKEk7iGHXpINDXA-9c503BRkT7SGv_Gw52GHYB8h_FtK2mNdSe46GShAQwLHAMToaa_v5U7SEaEdNY-uI0DQKmkSHrlGG-qlLVcGtTWRblxxfkOhYT9jcdbRM1g4Zqng6gWcEjWYV9b9mukHHdlKTRSXZ3BVm9jAnb_F0Op32FdtT_R-S6ZqfAWkQKMxJT0Dvweksrg-D7CUaKe5opD2fMP7AQleDTxjCwZ9OdjecWrBIOg6iW_4hJLGk6zu66BGISXOWhCgz3xIPztV1P6tyNyLdKk13FTZlTwxpM6psFF5N2RvJQVdfUh-Elj8lKXn-G2zpCm3eKbCVXoKjFW7FTNlHboz8cZygfeyASkkTf9TNHONdBTEj3_eQ10Ayy9T2bWOX8V28oTuXzs2ozv3ROLXavm8as5KLW43Q-X4PNx9lGBgoYiLFLYm_L5mYFKH_5J7AfjEm8LbdZElRm_HaIZW1PRJXAHKm5Y8m7h72qCEFITS-x02oZAvNUYRhcwwbrYTOjltYCbQ=s1024

Share this post


Link to post
Share on other sites

Nicely done Kris!

Thanks (as always) for the details and the links.

Share this post


Link to post
Share on other sites

Awesome write up! Definitely on my to do list

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...