Nice custom driveshaft.I went with the Viair 450 for the 100% duty cycle. It is great and I use it for the vehicles and around the house to fill bike tires and such versus turning on my bigger air compressor. Overland journal has done two different write ups on air compressor tests.
Overland air compressor test 2011
Overland air compressor test 2018
I replaced the chuck with a Milton 503 and the hose with 25' of 1/4" from Flexzilla.The 400P is the sweet spot in the Viair lineup. I did need to replace the air hose and the inflator/chuck. The hose cracked and the chuck quit working. The pump itself has been excellent.
I've been using this Air Armor M240 for a few years, and have been happy with it. Only 33% duty cycle, but it is more than enough for me and my 33" tires. I'm never the last one to fill back up. It comes in an ammo can, so it is easily transportable between vehicles. Costs about $130.00.
MasterFlowAir
masterflowair.com
View attachment 564971
Yeah,my chuck died and I have the same unit. It'll inflate 295's from 25 to 50psi in less than 20 minutes easy.The 400P is the sweet spot in the Viair lineup. I did need to replace the air hose and the inflator/chuck. The hose cracked and the chuck quit working. The pump itself has been excellent.
I've been using this Air Armor M240 for a few years, and have been happy with it. Only 33% duty cycle, but it is more than enough for me and my 33" tires. I'm never the last one to fill back up. It comes in an ammo can, so it is easily transportable between vehicles. Costs about $130.00.
MasterFlowAir
masterflowair.com
View attachment 564971
I don't know if this still holds true, but the difference in duty cycle ratings between some VIAIR compressors seemed to be based on their motor speed and the resulting heat. In my case, it made more sense to buy a 400P compressor with a lower duty cycle (but higher output) than what appeared to be an identical model (450P) that had derated output that allowed it to maintain a continuous rating. My truck has relatively small tyres, so it actually takes less time to inflate them with the cheaper compressor, and I don't believe I'm abusing it in the process.
Just something to think about before spending more when a lower priced model may be a better fit for your use.