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06-16-2014, 12:25 AM
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#15
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: May 2012
Location: Today? Clayton, North Carolina
Posts: 5,093
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Nerdy, if you buy a diesel it will likely have an integral compressor. However....... if you need more than 95-100psi anywhere, using the onboard will require you to have three hands and seven thumbs to manipulate a kind of Rube Goldberg kluge to trick your compressor into kicking on when it thinks all is fine.
Alternatively, many buy a separate electric compressor and just be done with it. Buy something that will push 150psi so you'll get a flow rate that will add something to your tire in less than 15 minutes. I bought this one. $100 @ HF. Many are satisfactory.
__________________
John and Diane (RIP Lincoln, 21 FEB 22) RVM103 NHSO
Fulltimers since June, 2012
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element
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06-16-2014, 05:59 AM
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#16
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Member
Join Date: Nov 2009
Posts: 77
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I think I paid $18 to fill my Powertank. Just use it for tires and LP burners, occasionally something else that needs blowing out with compressed air.
I fill it at a shop that sells gases for soda fountains. I've also filled it at Matheson Tri gas, and some people go to shops that service fire extinguishers. The great thing about it is how quick it tops off tires and it's portability.
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06-16-2014, 06:10 AM
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#17
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Apr 2012
Posts: 2,079
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Quote:
Originally Posted by Moonrover
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A friend of mine bought this air compressor. The advertisement is correct it is the quietest air compressor I have ever heard run.
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06-16-2014, 06:15 AM
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#18
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Registered User
Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
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JMTCW, the 125 psi compressors just don't have the guts to fill up a 22.5 tire to 120 psi.
I first bought a Husky 125 psi and finally sold it and bought the 155 psi Husky. I now have no problems getting my tires to the desired psi, 105 for the fronts and 115 for the rears based on my weights.
Make sure you check the maximum psi for your tires and wheels. Most 22.5 tires max out at 125 but there are wheels which max out at 120 psi.
Dr4Film ----- Richard
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06-16-2014, 08:04 AM
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#19
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Member
Join Date: Jun 2014
Posts: 47
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Quote:
Originally Posted by Ggrvusa
I think I paid $18 to fill my Powertank. Just use it for tires and LP burners, occasionally something else that needs blowing out with compressed air.
I fill it at a shop that sells gases for soda fountains. I've also filled it at Matheson Tri gas, and some people go to shops that service fire extinguishers. The great thing about it is how quick it tops off tires and it's portability.
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After you fill that tank 10 times, you've just spent enough to buy an air compressor. And I wouldn't be able to run air tools.
I like the idea of a Powertank as an emergency backup though. Definitely worth looking into.
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06-16-2014, 08:12 AM
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#20
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,780
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Quote:
Originally Posted by Dr4Film
JMTCW, the 125 psi compressors just don't have the guts to fill up a 22.5 tire to 120 psi.
I first bought a Husky 125 psi and finally sold it and bought the 155 psi Husky. I now have no problems getting my tires to the desired psi, 105 for the fronts and 115 for the rears based on my weights.
Make sure you check the maximum psi for your tires and wheels. Most 22.5 tires max out at 125 but there are wheels which max out at 120 psi.
Dr4Film ----- Richard
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Richard, I'm curious about your pressures. We have the same rig and I somehow came up with 110 in the front and 100 in the rears. I think I got those pressures from a Goodyear chart (and added 5 lbs or so).
Joe
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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06-16-2014, 08:14 AM
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#21
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Senior Member
Join Date: Aug 2010
Posts: 1,495
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Keep in mind that if you need 95# in your tires and the compressor has an upper limit of--say 100#- it will take quite awhile to reach your desired 95#. That last few pounds is like getting close to the top of a very steep hill after the long traverse up from the bottom.
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06-16-2014, 11:25 AM
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#22
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Member
Join Date: Aug 2011
Posts: 61
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I had a craftsman compressor unit without a tank prior to buying the RV and tried using it, buy it was so noisy I could not tell if air was going into the tire. My compressor with 6 gallon tank is great at home but too big and heavy to drag on long trips. My solution was a tank from Harbor Freight. It is rated to 125psi, but the valve would bleed down to 120, so I taped the valve. It holds 125psi and I can add 3-4 psi to all 4 tires on one fill if needed. I run my tires at 86-88psi. The tank takes less space and is easier on my old back and I recommend it.
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06-16-2014, 06:59 PM
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#23
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Member
Join Date: Nov 2009
Posts: 77
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10 fills would rake more then 10 years. Speed and convenience, are why I love the powertank. It's not about $
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06-16-2014, 07:19 PM
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#24
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Registered User
Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
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Quote:
Originally Posted by MSHappyCampers
Richard, I'm curious about your pressures. We have the same rig and I somehow came up with 110 in the front and 100 in the rears. I think I got those pressures from a Goodyear chart (and added 5 lbs or so).
Joe
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Joe,
It is really dependent on your actual corner weights and tire manufactures recommended tire inflation psi for those weights.
I run Michelin's in the front and Bridgestone's on the rears.
My most recent weights as of October 2012 are:
Total full weight of the coach.
Front = 13,200 lbs. With people and dog.
Rear = 23,200 lbs.
After doing the math here are my corner weights.
Left front = 6,500 lbs.
Right front = 6,700 lbs.
Left rear = 11,640 lbs.
Right rear = 11560 lbs.
The weights I had back in April of 2010 were:
Left front = 6,340 lbs. Without people and dogs.
Right front = 6,400 lbs.
Left rear = 11,080 lbs.
Right rear = 11,320 lbs.
Based on the inflation charts for both Michelin and Bridgestone, the fronts should be 100 psi but I always have a 5 psi safety margin. The rears are OK at 110 psi but again I add the extra 5 psi.
That's how I came up with 105 psi for the front and 115 psi for the rear.
I will be re-weighing my coach at the same place I did back in October 2012 when I head for Alaska in May of next year. Hopefully both the coach and my Rolling Garage will be lighter than they were in 2012.
Dr4Film ----- Richard
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06-16-2014, 07:27 PM
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#25
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Senior Member
Join Date: Dec 2012
Location: Full Timing
Posts: 751
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Quote:
Originally Posted by Brockx
I'm real happy with this one. Weighs about 20 pounds, 150 psi, I only take it to 85 for my tires but it is fast. Got this at amazon, Sears has it also as a Craftsman, $100.
Edit
BTW, it is also low amp draw, runs off my outside plug. Generator or Campground current.
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This. Works well. Cut in pressure at 125 psi fills my front tires at 110psi, no problem. Love it.
__________________
Mike
2003 Alpine Coach 40MDTS - 400HP Cummins ISL
Can Am Spyder Roadster
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06-16-2014, 07:34 PM
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#26
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Senior Member
Winnebago Owners Club
Join Date: Apr 2013
Posts: 1,061
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i dont have a problem inflating my tires to 105 PSI using my built-in onboard compresser in my diesel pusher.
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06-18-2014, 08:12 AM
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#27
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,780
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Quote:
Originally Posted by alpha99
i dont have a problem inflating my tires to 105 PSI using my built-in onboard compresser in my diesel pusher.
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You need this!
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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06-18-2014, 08:39 AM
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#28
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Senior Member
Join Date: Nov 2008
Posts: 3,648
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Quote:
Originally Posted by alpha99
i dont have a problem inflating my tires to 105 PSI using my built-in onboard compresser in my diesel pusher.
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Looking for the correct air hose fitting to connect to the on-board connector, do you remember the fitting number you used?
__________________
2024 KZ Durango Gold
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