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Old 05-07-2013, 11:08 AM   #1
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Crossfire dual and TPS 507

Question for those using both a "Crossfire" dual pressure balancing device and a TPMS such as the TST 507 system. If you use only a single TPMS sensor on each pair of duals and one of the duals develops a leak would "Crossfire" close the valve to the leaking tire so the good one wouldn't be deflated. If that's so wouldn't the TPMS sensor continue to report pressure from the good tire... leaving the driver unaware that one of the duals had gone flat???

Thanks

Don
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Old 05-07-2013, 11:23 AM   #2
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I have Crossfires and a TST sensor. My understanding is that the way the Crossfire works a flat (or low pressure) on the inside dual would cause the Crossfire to "cut it off" after pressure in both tires had fallen by ~10 psi. That would result in the TST sensor showing a drop in pressure of that amount. On the other hand, low pressure on the outer dual would result in it being "cut off" and the TST sensor would show zero. Regardless of which tire has low pressure, you would definitely see a change in the TST readout which would alert you to a problem.
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Old 05-07-2013, 11:30 AM   #3
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I have Crossfires and a TST sensor. My understanding is that the way the Crossfire works a flat (or low pressure) on the inside dual would cause the Crossfire to "cut it off" after pressure in both tires had fallen by ~10 psi. That would result in the TST sensor showing a drop in pressure of that amount. On the other hand, low pressure on the outer dual would result in it being "cut off" and the TST sensor would show zero. Regardless of which tire has low pressure, you would definitely see a change in the TST readout which would alert you to a problem.
Thanks that is what I was hoping and I also heard back from TST and and they confirmed the same thing. Both of these seem to be good products and work together so I am going to have these installed on my coach as well as the TST sensors on my tow car.

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Old 05-07-2013, 11:57 AM   #4
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I purchased a hose from Dual Dynamics/Crossfire that allows me to have a sensor on both tires. Never have to worry if the balance feature works.
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Old 05-07-2013, 12:11 PM   #5
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I purchased a hose from Dual Dynamics/Crossfire that allows me to have a sensor on both tires. Never have to worry if the balance feature works.
How does that work. Thanks

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Old 05-07-2013, 01:43 PM   #6
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I personally do not like the Crossfire system. Mine began leaking after 2 years.

Next time you are at a truck stop, look at their tires. You will not find any connections between dual tires. Even if you have a few pounds difference between duals, it's just no big deal.

I do agree a good TPMS system is great to have. It saves a lot of time checking tires and can alert you of impending failure if you see a sudden pressure increase.
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Old 05-08-2013, 03:37 AM   #7
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How does that work. Thanks

Don
Requires 2 sensors.

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