I received this little air compressor for Christmas. I thought it might come in handy. The usual price is around $59 at Lowes. I played around with it today and so far like it. I will start off by saying that 85% of my offroading has been at URE. There is a gas station a mile away where I can inflate my ties up again. So I did not want this for my usual tire inflation. I wanted this so when I go to other places (Brown Mountain, Richland Road, Hurricane Creek, etc.) I could air down a little.
Here is what it is. This little inflator can run off of 120V AC, or run off 12V DC plugging into the power outlet (cigarette lighter). It come with a few adapters for various other uses. It even come with room for extra valve stem caps. There is a digital pressure reader that reads as it inflates. It fastens to the valve stem so you do not have to stay there bent over. Best of all it has a target pressure setting and automatically switches off when it is reached.
I practiced with it today and here are the results. The below times were with my 255/85/16 KM2s. I was using a 20' drop cord when using the FJ AC power outlet. The shorter the cord, the less resistance, and more current you can get out of the AC outlet. I think 20' would most likely be the shortest that would still reach all four tires.
Plugging into my home power outlet:
from 20psi to 30psi - 3.5 mins.
from 30psi to 40psi - 4.5 mins.
Plugging into my FJ AC power outlet:
from 20psi to 30psi - 4 mins.
from 30psi to 40psi - 5.5 mins.
Plugging into my FJ DC power outlet (cigarette lighter):
from 20psi to 30psi - 5 mins.
from 30psi to 40psi - 6 mins.
As expected it was slow, but all in all not too bad. With the automatic pressure setting I can be doing other things as it inflates. I run my tires around 42psi. I usually air down to 22psi when playing. However all I really need is something to get me from the mid 20s to the mid 30s to get home. I can air up further there with a larger compressor.
Now the pics