New Moto Guzzi Door Mats Available Now
I have an Airmoto and also bought one for my dad which he's been using. They're convenient and fit our use case which was battery powered for use with motorcycles that are 6V or just magneto bikes with no battery. Personally, in any situation of having a 12V bike with a battery I would prefer to just use a wired inflator connected to an SAE pigtail off the battery. The Airmoto ones do not have a serviceable battery, so they will eventually be a paperweight because of that.I also a few of the DynaPlug inflators, one with several years of regular use on it. They hold up great, the only thing I don't like about them is common for most portable air compressors and it's that they're missing an air chuck so as you unthread them from the valve stem air escapes. To compensate for this, you just overinflate the tire knowing that's going to happen, then use your tire pressure gauge to check again and let some more out if needed. If I were buying one again I'd also consider the MotoPumps ones.
Unless you are moving at the glacial pace you only lose a little burp of air (using a screw on type ) or not enough to effect the overall level of inflation. The DynaPump does have an air test port so you can take a pressure reading while everything is connected. If you are really that worried about nailing the pressure over inflate the tire by 1 PSI and then disconnect. If you are using a $2 stick gauge also be advised their accuracy will rival the accuracy of 70's ere Veglia speedo/tachometers.
I have 12 volt pumps in each bike. I didn't want yet another battery that I need to charge.I did get a small battery operated one for the shed for the riding mower. Mainly just to try one out and play with the pressure level in the tires on a zero-turn mower. It is really handy, and the battery is fine for what I am doing. But it doesn't have great battery life. I'm sure one day I would need it on the bike, and it wouldn't do it.
Before you hit the road with your new portable air pump, double check the fuse in line with the pump has enough resistance to keep working when you need it. Mine popped right when I needed it most…thankfully we had spare higher rated fuses within our group, 200 miles from any rescue, in a desert, at 120degrees, with sweat dripping down your nose and considering how the hell your going to remove and fix a rear tire with tube under those conditions. It doesn’t help your psyche either when the four Harley guys your with start snickering…ask me how I know