picking out right air compressor

jorbill2or wrote:

Trackrig wrote:
Having watched the videos that Bshpilot provided the link to, why does the MH in the first video bleed off air when the brakes aren't being used?

Bill

because air from the tank goes to the tire or the other way tire to tank and they equalize . the compressor only comes on if below 90psi and the tire needed over 100 lbs so no compressor and the tire (over 100psi) bled pressure back to the tank. Thus you need to get the pressure below 90 then start filling after the compressor comes on

I should have said while he's not using the brakes and not airing up the tires..

When he is in the cab showing the factory air gauge and his air gauge on the end of the air hose, using the video timer, at 8:28 he has full air pressure of 125psi. At 8:37 he states it's normal for the air system to fluctuate up and down. At 8:40 his air is down to 115psi and at 9:05 it's down to 112psi when the camera is removed from the two air gauges. Unless he's gone outside and done something using air pressure and didn't film it, or edited it out, his air system is loosing air pressure while he's just sitting there filming. Or, did I miss something?

When he says it's normal for the air pressure to fluctuate - I'm assuming he means while the MH is just sitting there idling and no one is playing with the brakes, does his system have a leak or that's what his brand of MH does? The reason I ask the question, is my MH will drop to about 60psi after sitting for a week, nothing like how fast his looses pressure.

Bill