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Inflating tires
every so often, we do need to add a few PSI to our tires. A couple of years ago, I had purchased a VIAIR heavy duty 12 volts compressor and have been using it from time to time. It works but it takes a long time and it needs a power source.
every so often, I have also been reading about the “Power Tank”. After reading about it one more time the other day, I ordered the 10 lbs tank with accessories. Got it, took it to a welding shop to have them fill the tank with CO2 and “took it for a spin” back at the bus. It works as advertised and it sure is fast.
So… I decided to share this news with my brother in law in Canada. His response? … You wasted your money! … You could just as well use your own, on board air compressor.
So… Did I waste money? I always thought our air compressors do not deliver enough pressure!???
Awaiting your comments.
Cheers,
Ronald
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18 Replies
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yes you did imho,our coaches have 120-130 psi.
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Yep…our coaches have enough pressure to top off a tire. I have used my coach air to do it a couple of times while on the road.
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Yep me too, but you have to cycle the compressor sometimes to get that last amount in.
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Ronald, wait till the compressor spits which tells me we are at 120 lbs.
If your inflating steer at 105, drives at 95 and tag at 85 there is enough pressure. Another advantage is this air is clean and dry having gone through your air dryer.
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Ron,
Just so there is no confusion the air compressor discussed above is the engine driven compressor. If you are thinking the aux compressor that is not likely to do the job.
Did you waste your money? If I am on the road and have to air up a tire I have to start the engine, unwind 50 feet of hose, throw it under the bus if the tire in question is on the passenger side and then I can top off the tire pressure. If your pressure tank can be carried in one hand I suspect it is easier to use than what I have to go through. So you might have bought a little convenience.
I’m surprised the nitrogen for tires advocates aren’t all over you about using CO2.
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Using nitrogen in any tire other than a racing application is a waste of money and effort. The small amount of water makes no difference as the tire in any other application never gets hot enough.
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How many of you use the Prevost tire pressure guidelines for determining psi for each axle? http://motorhome.prevostcar.com/service/prevost-motorhome-tire-pressure-calculator
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Thanks for posting this guide Alvie, it makes it nice and simple.
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The ONLY tire pressure guide to use is that put out by the manufacturer of the tires and it is based solely on the weight each tire carries. There is no way Prevost or even the converter can state accurate tire pressures without knowing how you load your coach and how much that weight is distributed among your 8 tires.
After buying a coach and loading it with all the goodies, from clothes to food to tools, to spare parts, fill the water tank, empty the holding tank, fill it with fuel and get it weighed. Then use the charts below for your specific weights and tire size.
http://www.michelintruck.com/michelintruck/tires-retreads/load-inflation-tables.jsp
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Ron you can also run pneumatic tools with that tank you bought.
Greg
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Jon, the Prevost information comes from Michelin and is of course based on whether you are running Michelin tires. Thanks for clarifying. Tire pressure recommendations based on Michelin OEM tires. The coach should be weighed fully loaded, all tanks full.
Prevost recommends following Michelin’s guidelines, available atmichelinrvtires.com/assets/pdf/RVTiresBrochure.pdf.
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I understand that but the thing to recognize is not everyone uses Michelins, and while the tires on the coach may be Michelin, there are also different types that owners have selected that are nor original equipment types.
I suspect the pressures from type to type are close and even different brands may use the same pressures, but as long as we are trying to be precise we should use the pressures for the tire type and brand.
Our tires are one of our most important safety devices. We need to respect that and do everything we can to follow the tire manufacturer’s recommendations.
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Here’s Michelin’s link to their tires used for RV applications:
http://www.michelinrvtires.com/michelinrv/tires-retreads/load-inflation-tables.jsp
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I have read the above notes and have not seen any reference to where the quick disconnects are located or where to add a quick disconnect fitting. I would like to have one in the steering compartment and one at the rear of the bus so a 25′ air hose could be used not only for tire inflation but also for my air jack and a 3/4″ impact.
So far I have not found a place in the steering compartment. Does anyone have pics or description of where to tie in ?
Thanks,
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We can help, but need to know your year and converter. Suggest you put that info as a signature by going to Profile.
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