As I posted earlier, I bought one of these Viairs after reading they were on sale at Amazon. Upon receipt, I checked out the parts, and placed the bag into my basement storage.
Well, on another thread, I had explained that I had a cracked valve stem on one of my tires. I took the tire in to my local retailer and he installed a new valve stem. Today, we hitched up to leave for the weekend, and after dropping the leveling gear, I noticed the sidewall of this tire bulging out. I grabbed the pressure gauge, and sure enough, the retailer had only filled my 110 psi tire to 50 psi. I grabbed my newly acquired Viair, and pumped the tire up from 50 psi to 110 psi. Even with the 33% duty cycle, it pumped continuously 50 up to 110 psi. I never dreamed I'd need it so soon after buying it.
I'm so glad I read this thread last weekend.