portable air compressor
Looking for thoughts and considerations for an AIAir 4000P 12V air compressor capability to air 22.5" tires on a Class A motorhome. All information and comments will be appreciated
Forum Discussion
From the Vair web site, the Viair 400P has a 33% duty cycle at 100psi. It also lists the following example fill rate for an off road tire:
35? x 12.5? Fill Rate
0 to 30 PSI 5 min. 20 sec. (± 15 sec.)
15 to 30 PSI 2 min. 45 sec. (± 10 sec.)
This tire is significantly smaller than a 22.5 wheel where the tire can be almost 46" in diameter. The fill rate drops to 1.19 CFM at 100 psi from 1.86 CFM at 30 psi. Since the duty cycle is 33% you will need to give it a rest to let it cool off. It also does not have a tank.
I used a Viair 450 as a replacement compressor for my air leveling system. The 450 is a continuous duty compressor at 100 psi. After installing it I exercised pretty hard and had it running to 15 minutes continuously leveling to coach from an empty air bank. The compressor got very hot, hot enough to burn you.
To top off our tire we bought the compressor for Lowes:
Fini 1.2-Gallon Portable Electric Hot Dog Air Compressor
This little compressor works great for topping off tires. It is a lot smaller than a pancake compressor. I have also used in the field to run nail/brad and staple guns when my big compressor was not available.
35? x 12.5? Fill Rate
0 to 30 PSI 5 min. 20 sec. (± 15 sec.)
15 to 30 PSI 2 min. 45 sec. (± 10 sec.)
This tire is significantly smaller than a 22.5 wheel where the tire can be almost 46" in diameter. The fill rate drops to 1.19 CFM at 100 psi from 1.86 CFM at 30 psi. Since the duty cycle is 33% you will need to give it a rest to let it cool off. It also does not have a tank.
I used a Viair 450 as a replacement compressor for my air leveling system. The 450 is a continuous duty compressor at 100 psi. After installing it I exercised pretty hard and had it running to 15 minutes continuously leveling to coach from an empty air bank. The compressor got very hot, hot enough to burn you.
To top off our tire we bought the compressor for Lowes:
Fini 1.2-Gallon Portable Electric Hot Dog Air Compressor
This little compressor works great for topping off tires. It is a lot smaller than a pancake compressor. I have also used in the field to run nail/brad and staple guns when my big compressor was not available.
