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Re: Tire pressure

Reply #50 –
Yahoo Message Number: 28845
Do you have a web site or contact information for the Crossfire system you have?

Re: Tire pressure

Reply #51 –
Yahoo Message Number: 28859
The 'Dual Dynamics' website (www.dualdynamics.com/dualcrossfire.html) has absolutely no contact information, just a description of their products including Crossfire. The following place seems to have them, and at a price which looks good (about $75):

Customer Service Toll Free (US Only) 1-866-MIDWAY-1 Telephone 214-943-4341

Postal address:

Midway Auto Supply
P.O. Box 4415

Dallas, TX 75208 United States

Customer service:

shopinfo@...
I have no experiance with this company, but I think I might have in future :-)

John 04 Inspire 51078

Re: Tire pressure

Reply #54 –
Yahoo Message Number: 28869
I got mine on e-Bay. $54. You can order whatever pressure setting you need, and will get them in about a week. Type in "Crossfire dual pressure" and it'll take you to them.

Dave and Carol Trotter
'01 Intrigue #11215

Re: Tire pressure

Reply #55 –
Yahoo Message Number: 28877
Which of the Crossfire systems do people recommend? They have the heavy duty rubber hose (CHDRH), stainless hose (CSSH), and what is the "Super Single" Crossfire (Rubber hose, SSCFRH, Stainless hose (SSCSSH)?

Al Colby

2000 Intrigue 10979

Re: Tire pressure

Reply #56 –
Yahoo Message Number: 28878
Fred: I have a question on another subject. If car and RV manufacturers did not use the chassis of the vehicle as a ground return, would electrolysis be less of a concern?
TWI 2004 Intrigue 11731

Re: Tire pressure

Reply #57 –
Yahoo Message Number: 28881
Al,

The super single Crossfire is a unit for just a single tire.
The "Dual" is for the rear duals. I ordered the stainless braid just because the hoses are aexposed and they look better cosmetically than rubber hoses.

Dave Trotter

'01 Intrigue #11215

Re: Tire pressure

Reply #58 –
Yahoo Message Number: 28884
Hi TWI,

Vehicle chassis, although steel and aluminum, does provide infinite paths for electron flow, thus voltage drop is minimal if proper bonding methods are used. Poor or loose grounds cause corosion at the grounding location but not electroysis across large areas. Small plates with multiple poor grounding from plate to plate can cause larger area electrolysis manifestations. This is only a partial answer. Many other factors are envolved. Murphy was an optimist.
Fred Kovol

Re: Tire pressure

Reply #59 –
Yahoo Message Number: 28887
Hey Fred.....how about sacrifical anodes or zincs as in the marine industry? Could they placed at strategic places?

Max

98 Affinity #5487

Re: Tire pressure

Reply #60 –
Yahoo Message Number: 29010
The Crossfires are sold at fixed pressure settings. Does anyone know whether they are adjustable at all? What do you do if you decide to run higher or lower pressures? Buy new sets?

Bill & Debbie in San Diego

Re: Tire pressure

Reply #61 –
Yahoo Message Number: 29031
No, they are designed to work at a specific pressure. If you decide to change pressures, you will need to get a new set, or perhaps you can trade in on the old set.

John 04 Inspire 51078

Quote from: Bill Zucker
The Crossfires are sold at fixed pressure settings. Does anyone know
whether they are adjustable at all? What do you do if you decide to run higher or lower pressures? Buy new sets?

Re: Tire pressure

Reply #62 –
Yahoo Message Number: 29041
I asked this same question to the guy that sold me the Crossfire at one of the Rallys. He told me that they will still equalize the pressure in the two tires but the red/yellow flags in the window will be off. So, they will not report accurate red/yellow information when looking at it. Since I have the Smartire and manually check pressure anyway, I decided not to worry about it if I want to add a few more pounds than what the Crossfire indicator is configured for.
My Smartire verifies that the tire pressures remain equal.

Larry 03 Allure, 30856

Tire pressure

Reply #63 –
Yahoo Message Number: 46588

I have a drivers side front tire that apparently has a slow leak. I will be bringing in to a tire place that can handle big tires soon and hopefully they can fix it since I have only had the coach since October and it is a new '09. The recommended inflation for this tire is 125 psi. The air compressor I own will not produce more that 100 pounds and none of my local gas stations can get beyond 100 psi. Does anyone know of a air compressor that will actually produce 125 psi that would be portable enough for me to carry in the coach? I had a friend bring over a monster compressor on four wheels and a tank that looked like a small car. It was suppose to get to 150 psi but it never got beyond 105 in actual output. I'm open to suggestions.
Chuck
31695

09' Allure 470 Crane Praire

Re: Tire pressure

Reply #64 –
Yahoo Message Number: 46589
Chuck,

I bought a tire pressure booster (http://www.dickmantires.com/air_pressure/air_pressure.html) from Bob Dickman tires a couple of years ago. I keep it in the molded plastic box you can also buy, though I have heard that some have more permanently attached it to the coach. The tire pressure booster connects to one of your air outlets (usually located under the front of the coach on the driver side). I have successfully used it to bring my tires to their correct pressures (I use the placard behind the driver's seat after having weighed the coach to assure proper weight balancing). It works great, it's always with you, it's light and easy to use and I wouldn't be without one.
Harry

06 Inspire 51933

Re: Tire pressure

Reply #65 –
Yahoo Message Number: 46593
Chuck:

Most air compressor systems where the motor is of the medium or larger size have a regulator and some gages on them. In my case it is a 3 HP with a 20 gallon tank on 220 volts.
That said many of the smaller units still have the same regulator. Now for the point of all the description...........
If you check the regulator manifold you should see a plug opposite the fitting where your hose connects. This plug is pressure direct from the compressor that bypasses the regulator. My unit, with the hose hooked up to the correct connection on the regulator, also maxes out at about 105 and not for long with out forcing you to bleed off to get the unit to recharge.
With the hose at the other pluged position I have no problem getting the 125 LBS needed for inflation.
The regulators are in practice limited but the compressor has a greater capacity without in danger of exceeding the safe limits of the tank.
Jim Green Intrigue 11021 "Rollingghetto"

Re: Tire pressure

Reply #66 –
Yahoo Message Number: 46594
Les Schwab sells a gadget that fits in your hand that will double the air pressure provided by the coach for inflating tires. Call the boys in Junction City, that's where I purchased mine. It takes my 12R's from 105 to 120 lbs in about two minutes. It has matching fittings. I sort of remember seeing an ad for one in the last issue of Destinations Magazine. TWI 2004 intrigue 11731

Re: Tire pressure

Reply #67 –
Yahoo Message Number: 46598
Porter-Cable makes a 150 PSI, 110 volt unit that easily handles the 120 psi I need and it'll fit in about any storage bay. Cost around $150

Ken Bradshaw '04 Allure 31042

Re: Tire pressure

Reply #68 –
Yahoo Message Number: 46602
There are also CO2 tanks available from several sources, most common are by PowerTank. With 300psi+ pressure available it fills/tops off tires quickly. Negatives are cost which is about $400 when all is said and done, the tank takes up room and must be refilled after a while. I get two or three years from a $15 fill. I am quite happy with the system except for the size - and weight. You can also use power tools with the available high flow valve but I seldom need that or even carry the tools it could operate.
I would have spent the money on the Les Schwab pressure multiplier system but I don't think it was available 5 years ago when I bought the PowerTank - at least I didn't know about it. I am sure it is slow in comparison to the CO2 tank but it takes up such little space I think it's a better choice. But not enough for me to throw away the tank and spend another $400. It ain't broken so I won't fix it.

Bob Handren
Inspire 51178

Re: Tire pressure

Reply #69 –
Yahoo Message Number: 46608
When you said "The recommended inflation for this tire is 125 psi" is that the max the tire will take or what you need to carry your load?
If what you need to carry the weight is in the 105 - 115 psi range, you can get that with your on-board air tanks.
If 125 psi is what you must have to carry the load . . . hum, that sounds high and potentially problematic.

--

Lee Zaborowski
Intrigue #12153

Re: Tire pressure

Reply #70 –
Yahoo Message Number: 46610
Lee, last Feb in Tuscon I asked Paul with Bob Dickman what pressure they were suggesting and they said CC and their recomendation was to use the pressure on the placard in the coach. I confirmed this with the head of engineering at that time. They both said the tire manuf weight charts had led to some underinflation rates. I had Toyo's on my Intrigue and had weighted it travel ready and fueled when we first got the coach and following the chart it indicated front and tag pressure of 90 and 80 for the drive, I thought this was too low and called customer service at Toyo and was tole to go with 110 front and tag and 100 drive. Since talking to Paul and CC Feb 08 I put Michelin ZXA all the way aroung and went to 120 front and tag, and 100 drive. Rides fine and matches the placard. If you remember the ford Firestone deal years ago was primarily from not running pressure per the manufacture placard. CC attitude was just use the placard and don't run a chance of underinflation.
Phil Baker 03 Intrigue 11667

Re: Tire pressure

Reply #71 –
Yahoo Message Number: 46611
Hi Phil. My readings on the tire pressure subject by many owners was to go with 10 psi above what the tire manufacturer charts say - in your case 90+10=100 and 80+10=90. That's what I've been doing for 3 years with no problems. Adding another 10 psi, as long as you'll below the max for the rim should not be harmful, just a harsher ride.
This whole thread started with air compressors and I still think you can tweak with your on-board air tanks. I am puzzled as to why an owner, if the tires are not leaking, would need to fiddle with air pressure at all and need a compressor at all, once you get it right, other than a small bump up once a year.
I could buy 110 front and 100 drive for you. The tag pressures are a magical mystery show!

Lee

Re: Tire pressure

Reply #72 –
Yahoo Message Number: 46616
Gentlemen

The whole tire pressure issue is as a result of the Ford/Firestone tire situation a few years ago on SUV's When I took delivery of my 09 Magna I had a discussion with the CC engineering Guy. My coach has the 20,000 LB front suspension which is the same as a Prevost Bus CC used the same air pressure ratings as Prevost even though the front end loads are different. The rationale was that if it was good enough for Prevost it was good enough for CC. I E they would have to sue Prevost and CC. Paul at Bob Dickman tire almost had me sign a document so that they would not be sued because I wanted to Run Less tire pressure than what was shown on the label ( A La Prevost ) I had CC do a 6 point weigh of my coach with all our stuff on it. I then went to the Michelin tables ( which I am sure have a safety factor built in ) and added 5 PSI to the numbers. It was only then that BoB Dickman Tire consented to program the Smart Tire at the pressures I selected From the Michelin Chart. It is WHOLEY about being sued. PERIOD If you have a 6 point weighing and allow a safety factor to the Manufacturers tables that they will allow themselves to change from the listed settings ( which are all about Not getting sued ) FMCA has it right --- get your coach weighed , add a safety factor ( to the already safety factored factory tables ) and adjust your pressures to that so that you can be safe and get a good ride. Forget all the other fluff!!

Ron Baran Magna 7025

Re: Tire pressure

Reply #73 –
Yahoo Message Number: 46620
Exactly my understanding of the issue and what we do. Lawyers can cause unintended results like no other profession on earth. You still can't get a weight/pressure table from some manufacturers for some tires but can for others (particularly off-road since the Feds don't regulate all of that - yet.) IF none is available use the Fed mandated placard. If you change brands and the placard becomes inaccurate and no tables are available - good luck. It's probably a law firm will sure over that after a failure and then there will be nothing to guide us.
The safest practice is to know what YOUR coach weighs at every tire with the coach loaded for travel and use the appropriate pressures - as per FMCA guidance. If err you must slight overpressure is much better and safer than underpressure and never exceed the values on the sidewall cold.
I just bought new tires and bypassed any brand that does not publish weight/inflation tables. The coach has been weighed and we follow the tables as appropriate. They are Firestones.

(Gasp.)

Bob Handren
Inspire 51178

Re: Tire pressure

Reply #74 –
Yahoo Message Number: 46622
Ron and I have said the same thing, only I like the 10 psi safety margin.

--

Lee Zaborowski
Intrigue #12153