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Old 10-16-2014, 06:14 AM   #15
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Quote:
Originally Posted by dpinvidic View Post
I also use mine, but I only need 10 psi.

Dan

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Old 10-16-2014, 07:59 AM   #16
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Here's what they told us to make at freightliner school. The valve allows you to bleed off pressure to have the compressor running
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Old 10-16-2014, 08:32 AM   #17
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My on-board compressor cuts off at 125 PSI. It would take forever to inflate a tire to 120 PSI!
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Old 10-16-2014, 08:41 AM   #18
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Wait a minute!! Are you inflating these tires from zero or just topping them off? Topping off should be easy with the onboard compressor. However, 125 is alot. Don't fill your tires to the placard limit printed on the side of the tire, it's too much air or you have too little tire. YOu should weigh your rig and get a batter idea of the air required to give you a flat footprint. Mine goes about 105 for a loaded 40 footter using 275/70/22.5 x 6. Nice flat footprint wears evenly and rides great. Too much air wears the middle and rides like a rock. TOO LITTLE IS ALOT WORSE, AND CAN BE FATAL. Any good tire dealer can give you the chart to figure the air needed for your tire size and loaded weight.
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Old 10-16-2014, 08:42 AM   #19
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This sounds like a good idea to me. My mh has a air quick connection for use when need to be towed, wouldn't that connection work to access the air system? My mh makes 125 psi also, and has 2 air tanks , I'm thinking that would compensate for the lighter air pressure. I would agree if you needed to inflate a flat tire it would probably take awhile, but wouldn't think it would be any problem at all to top one off.I'll be trying it out.
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Old 10-16-2014, 08:55 AM   #20
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Hi,

I found this one at Lowes and it has been working great for me. It is much quieter than others I have found. I leave it in the bay and hook up a 50 foot hose and power it with an extension cord.

Kobalt 3-Gallon Air Compressor - Kobalt Tools
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Old 10-16-2014, 08:57 AM   #21
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What are you blowing up balloons?
Apparently I can't type....should be 105 PSI....

Dan
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Old 10-16-2014, 09:07 AM   #22
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I don't understand the need for huge air volumes when inflating tires. Is everyone starting out with flat tires? I check my tires before any distance travelling and I'm seldom off more then 10psi from ideal. I can check and top off all 8 of my tires in less then 20 minutes using the MH air. If you're having to fill tires all the time you have a problem with those tires.
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Old 10-16-2014, 09:21 AM   #23
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Quote:
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There I s a good YouTube video on this. Your coach air system pressure varies between 75 psi and 120psi. The video shows how to put a "Tee" on the input of your inflator so you can see when the system has higher pressure than your tire. My opinion is 120 is too high of a target to use the coach compressor.
I also use mine, but I only need 10 psi.

Dan
I have no problem inflating to 120PSI using the "Tee" described in the video mentioned above. The idea is to be sure that the coach air compressor is above 120 when filling those high PSI tires. The "Tee" allows you to observe air compressor pressure while filling, and to force the compressor governor to kick in if the coach pressure drops too much. I only fill my front tires that much (they are rated by Michelin to go to 130PSI under full load), and my rears are in the 90-95PSI range. Adjusting pressure on all 8 tires takes about 5-6 minutes.
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Old 10-16-2014, 09:25 AM   #24
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sometime ago i was looking at rvgeeks' video thinking to use onboard compressor, quickly scratched the idea. in order to do that, i needed to t-off from an existing air hose, and added a valve so to shut it off when not in use. well, it had to be done correctly or you lose air from the main air system creating more problems.

i have since been pursuing a standalone air pump, specifically - (1) on 110v; (2) oil lubed; (3) small; (4) 135-150 psi; (5) durable. well still looking... if somebody has seen one similar, please advise...
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Old 10-16-2014, 11:48 AM   #25
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Ok I tried it and it works great!! I'm assuming all MH with air brakes have the same air connections to release the air brakes in order for it to be towed? It doesn't make much sense to purchase a air compressor when you already have one on board.
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Old 10-16-2014, 02:22 PM   #26
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I set mine up the same as RV Geeks video. I have a nipple on the drain line at the front of coach for quick connect. I just put female quick connects on both ends of my airline. YMMV.
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Old 10-16-2014, 02:26 PM   #27
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The one PanJH posted a picture of is a waaay better way of doing it compared to rv geeks
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Old 10-16-2014, 03:52 PM   #28
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Quote:
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Here's what they told us to make at freightliner school. The valve allows you to bleed off pressure to have the compressor running
This would work fine, but you would want to connect it to the end of your air hose. You need to be at the tire so you can release pressure in the coach if it is below your tire pressure to get your compressor started.
Then once your coach pressure gets higher than your tire pressure, you can start to fill your tire. Otherwise you are running back & forth. The release valve is a great idea so you don't have to go into the coach to pump the brakes.

Dan
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