I am surprised it pumps that fast, but then you are not interested in pressure, only volume. The one I have is not supposed to be operated more than 20 minutes without a cooling off period as it gets pretty warm pumping trailer tyres to 65 PSI. Should run much cooler against the ounces of pressure required in the air bed. Works a treat, pumps the airbed up in just about 20 mins, still cool, no probs but as you say, no pressure in the airbed. My workshop machine runs on 240v, was very cheap but works a dream. Dave. We talking 12 volts here or is it 110VAC or more? Probably made in China and available at Horror Fright here in the States so what kind of ID does it have? If it is 110Volts, don't bother to look as I have two compressors of that type, one in each of me shops. Along the ME line, Charles Brumbelow has his new/used (Politically Correct - "Previously Owned") Cli-Shay up and ready for the big Mid-South meet this next week. Crank shaft had apparently had a sudden shock that rotated one of the cranks 90°, but we got that all corrected now and he had it steamed up this afternoon. My Filer and Stowell is loaded in my wonderful Dodge Cummins Turbo diesel truck and ready to leave Troy on Tuesday about noon. I think I got all the various and sundry water leaks repaired so I wont be disappointed at this meet. The rubber liner inside the stainless steel braided pressure line from the tender hand pump to axle feed water pumps had developed numerous pinhole leaks. New line, no leaks! Tested boiler to 150PSIG so all is in readiness. Jesse in sunny West Tennessee near the mile wide Mississippi River. > MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.