SmittyBilt AIR COMPRESSOR 5.65CFM - SB2781

This was amazing for airing up my class c rv tires!

I live near an employee and they hand delivered the replacement part that broke (see image). They said they hadn't seen the part break before. I didn't know about the pipe tape when they stopped by my apartment so I could let them know they should do a quality check. Super nice folks though!I ended up replacing that Japan standard hose fittings with an American standard fitting and hoses. Takes no time at all to air up (IT'S NOT A RACE!). I'd say it takes about 10 minutes from the time I stop, get the air compressor bag out, open the hood, take off the air caps and start airing back up is probably 10-15 minutes. Sometimes I do have to let parts cool down if it's 80 degrees or more outside before I toss the air compressor back in the bag.When I took the Smittybilt factory Japanese fitting off, I noticed pipe tape was covering the opening (see image).The factory gauge on this air compressor is a complete joke and worthless. If you use it, figure out where the pressure is by airing up and keep checking. Then track what the air pressure shows on the pump. Here are my air up notes:2020 4Runner TRD Off RoadSmittybilt 2781 gauge is worthless32 PSI on Smittybilt = 35 PSI on dash computer31 = 34 dash10 = 20 dashPump air ON Smittybilt compressor to read 42 1/2 PSI on gauge TO GET to ~34 PSI on DASH then take air out to get to PSI for ambient - This was never really consistent at all. I ended up abandoning this method.So what I do now (after I replaced the factory fitting, gauge, hoses and air nozzle)Hookup the Smittybilt power leads to the battery and close the hood while watching out for the power cables from getting smashed (you don't have to slam the hood, you just have to get the sensor to trigger the hood is closed).What's my tire pressure supposed to be at?My 4runner door jamb label says tires should be 32 PSI at rest ambient temperature. Meaning tires are not hot from driving on the road and whatever the ambient temperature is. At 10 degrees ambient temp tires are at 32 PSI. 120 degrees ambient temp tires are at 32 PSI. However, if you're at 32 PSI in 120 degrees and drive to where it's 10 degrees, your tire pressure will be 21 PSI when the tires reach ambient temperature when they cool off from the road friction.I close all doors with the drivers side window open all the way. Reach through the window and change the gauge cluster to show TPMS (cluster will switch back to something else if ANY door / hood is open) and air up to when it reads 31 PSI on the dash. By the time you get back to the air compressor and turn it off, it'll hit 32 PSI. 1 PSI is added from the time I see the dash change to when I get to the power switch on the air pump.TPMS rounds PSI up and down. 31.6 PSI is 32 PSI on the gauge cluster and 32.4 is 32 PSI on the dash. It's really not rocket science but if you can get within 2 PSI on all 4 tires, that's optimal.You can always add or remove air, but be mindful of the ambient air temperature and allow 1 PSI per 10 degrees of ambient air temperature. And whether you're going to drive to hotter or cooler places.Parts used to switch over from Japan standard to US Standard fittings (This Smittybilt is an open flow system):https://www.amazon.com/gp/product/B00EVRKSQE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1https://www.amazon.com/gp/product/B078Z98GF2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1https://www.amazon.com/gp/product/B07MCTC6NN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1https://www.amazon.com/gp/product/B089LV75HP/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1https://www.amazon.com/gp/product/B07MCTC6NN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I keep this in my truck at all times. There are times I need to air down and it's great to have on hand when I'm back on dry pavement. I run 70 psi in my tires on the regular and this thing does that with no issue. It does get hot while it's working so just keep that in mind. It works relatively fast. It has a long power cord and a long air hose. I can attach it to the battery terminal in my truck and fill the back tires with no problem. It's a little pricey but I like having it in the truck!

[UPDATE 8/19/2013 Two days ago as I attempted to fill a bicycle tire with a sticky valve, one of the two center prongs inside the nozzle broke--these are supposed to depress the valve needle. With only one prong left, the nozzle is ineffective so I have been using the nozzle and hose assembly from my old compressor as a substitute.]Pluses: fast inflation times up to 40 lbs/sq.in.; circuit breaker with switch, carrying case; (3) inflation attachments; continuous duty-cycle allowed when pressure is 40 lbs/sq.in; and long inflation hose;Minuses: the tire inflation rate decreases substantially above 40 lbs; placement of the on/off switch under the fixed hose coupler (which becomes very hot); it uses more battery power than a compressor I used previously; and it is larger and heavier than other battery-powered compressors on the market.Whenever you compress air, the main by-product is heat--with small compressors, noise seems to be a close second by-product. This compressor is relatively high-capacity for a 12-volt DC model and it generates much heat. Since the carrying handle also functions as a heat shield for the compressed air outlet tube, it can get very hot to the touch during extended runs. So, I recommend you keep a rag close by to wrap around the heat shield/handle any time you need to move it around after more than a few minutes of service. Likewise, wait before you de-couple the flexible length of hose--this hose fitting also gets quite hot. This Smittybilt model runs somewhat quieter than the 2.3 cu.ft./min Q-Industries compressor that I used to use, and I don't have to remove the intake filter before storing it in the carry case like I did for the "Q".Another positive: the compressor flexible hose inline pressure gauge appears to measure within a pound, maybe two, of my standalone Viair dial gauge.Initial experience: My tires are 275/65-18R metric (32.1x10.8-18 Standard); the maximum inflation pressure is 80 lbs/sq.in. Inflation times between my tires was not consistent between them due to poor inflation nozzle sealing with valve stems on two of the four tires. Here's my data from three different inflation events:1) 18-19 lbs up to 45 lbs: 2 min to 2 min 45 seconds per tire (9 min 30 seconds total running time);2) 18-19 lbs up to 66-68 lbs: 6 min to 6 min 30 seconds per tire (25 minutes total running time);3) 18-19 lbs up to 72 lbs: ~26 minutes;Other observations: during the longer compressor running times, the circuit breaker never activated. That stands in contrast to my old Q-Industries compressor, which could inflate all (4) tires from 16-18 lbs to 55 lbs each in about 20 minutes total, but the compressor used to overheat periodically (which is why I eventually replaced the fuse with a circuit breaker). If you intend to inflate all (4) tires, then make sure you run the vehicle engine per the owner's manual recommendation. Inflating all (4) during one of the above events drained my truck battery so much that it could not turn the starter; admittedly, I had operated the compressor on truck battery power only during the previous day, but then I failed to drive long/far-enough to recharge it completely afterwards.

I have the smaller one and two of these. I have not had any issues with any. The only thing I could say is the first that I got back in 2016, the smaller one, had the coil hose get old and crack. I ordered a new one through my local 4WP. Other than that my only complaint was the screw on chuck. That is a simple and cheap fix. The stock screw on worked fine for my truck and jeeps but not for my motorcycle, but my main complaint was how slow it was to attach. I added one of these to each compressor and have no complaints any longer. The small one I use on my Jeep with 33s and the larger ones for my truck and other Jeep with 35s and 37s. It airs them up without a problem at all.https://www.amazon.com/gp/product/B07MXBYPT2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1