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Old 08-03-2015, 09:17 PM   #29
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Pat TST recommends metal stems. Weight of the senders will flex the rubber stems. If you have external sensors get metal stems, have the tire shop balance the tires with the senders installed and you will have a happier tire/wheel. Mine are smiling all of the time. Can't see the trailer in the blinding glare of happy tires I paid $10 per tire for Discount Tire to pull them off, install the metal stem, spin balance and remount.
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Old 08-03-2015, 10:01 PM   #30
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G, gotcha. Thanks. I was just a bit confused as Jerry stated that he preferred the cap sensors because they could be used with rubber stems . The only reason to change to metal stems is if one was going to use the flow throughs. Correct?


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Old 08-04-2015, 06:30 AM   #31
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Originally Posted by Pat Cassity View Post
G, gotcha. Thanks. I was just a bit confused as Jerry stated that he preferred the cap sensors because they could be used with rubber stems . The only reason to change to metal stems is if one was going to use the flow throughs. Correct?


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That is not what I was told when I talked directly with them. Knowing I had the cap sensors they recommended I get metal stems because of the possibility of damage to rubber stems.
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Old 08-04-2015, 07:49 AM   #32
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Quote:
Originally Posted by Pat Cassity View Post
G, gotcha. Thanks. I was just a bit confused as Jerry stated that he preferred the cap sensors because they could be used with rubber stems . The only reason to change to metal stems is if one was going to use the flow throughs. Correct?


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Hey Pat,

I'll let Jerry speak on his behalf as to what he said...but I think you are directing this question to me??? I don't recall how Jerry put it unless I reread it. As I understand & accept it and as the TST website states, TST does recommend metal stems in either application...as it "could" pose potential problems. In only "my opinion", I think the weight of the sensors would show up a problem with older dried up rubber valve stems....whereas it may not with new ones....just my opinion. Common sense would dictate that someone as safety conscious as Dan is (TST owner), he would side with caution and suggest avoiding an issue and get the metal valve stems. After all, he has created the sensor sysytem and we are all running it (as well as Jerry and I selling them) in order to prevent a problem. I feel metal valve stems is the right and common sense thing to do. With that said, I'm running the sensors on my trailer, with rubber stems and have had no issues. I had planned to upgrade tires sooner but my 75 hour or so work week delays many of my plans. I have only towed only about 2200 miles with my rubber stems. I do have metal stems on my Roadmaster wagon tow vehicle. It is running very well balanced and smooth Michelins and oddly enough I could tell any difference when I added the sensors. The 510 sensors weigh a little over .75 ounce. I had planned to switch to metal stems on the trailer and have the tires balanced with the sensors installed when I get new tires....which will be before my next outing. I'm interested in going the "happy tire" route as GHaynes outlined.

From TST website:
No, you do not need special valve stems, but you do need commonly available metal valve stems. The added weight of the sensor on a rubber valve stem could cause problems that will be avoided by using metal valve stems.
Most motorhomes and commercial transport vehicles come equipped with metal valve stems. If you do need metal valve stems, they are not expensive; a recent customer had 6 valve stems replaced on a 30’ gooseneck racing trailer for $36. They are available and can be quickly installed by any tire dealer.


I hope this helps.


G
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Old 08-04-2015, 07:56 AM   #33
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There is nothing to reset when the sensors are removed, when the batteries are replaced or when the monitor is turned off. If you want you can call and I'll tell you all about them. I also talk to people about tires, ST vs LT. Too much information on tires and monitoring systems to cover by typing. You can reach me at 813-781-2995.
Jerry,

This is slightly off-topic and I don't want to hijack this thread...but I do plan to buy new 205 75-15 trailer ST tires soon and would like to hear your thoughts. So we don't hijack this thread any further than I have with tire talk, possibly, you could start another thread with some info about trailer tires? If that isn't possible, let me know a good time and I'll give you a call.
I have to buy tires one place, send them out to another place to have the wide whitewalls volcanized on there, it's a somewhat lengthy process that I need to get moving.
Thanks, G
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Old 08-04-2015, 07:59 AM   #34
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Metal stems. No matter which sensor. I would consistently lose air on all tires over a month.. Then one of the rubber stems failed. Changed all to metal. Pressure holds fine now.
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Old 08-04-2015, 09:22 AM   #35
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Thank you All for the comments on TST. If anyone has any questions feel free to call me at 770-889-9102
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Old 08-04-2015, 09:48 AM   #36
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To clarify my thoughts on rubber versus the metal stems and the sensors. I recommend metal stems always. They do not flex and they don't dry rot. They are just better whether or not you have sensors. Whether you have a tire monitoring system or not I recommend that you have metal stems installed the next time you change tires. If you decide to stay with rubber stems make sure new rubber stems are installed at every tire change.

The flow through, because of the design is a heavier sensor and TST strongly recommends metal stems. With the flow through sensor I would place an offsetting wheel weight on the wheel. The non flow through, cap sensor, is considerably lighter and I don't recommend an offsetting wheel weight but if you like you can use a half ounce wheel weight opposite the sensor. The problem here is that we don't high speed balance our tires anymore and so you may be balancing the wheel and tire but have no idea about the running gear.

If you want to get into a true balance look into Centramatics or other forms of continuous dynamic wheel balances. I personally use Centramatics and have for over 6 years. Dexter Axel came out with a disclaimer regarding Centramatics and their use with Neverlube bearings. I've had my bearings checked annually by Glen from Dexter and everything is still fine. I think their disclaimer is just a CYA notice. I don't sell Centramatics. They are tire and lug nut specific. I think they are one of the best, inexpensive things we can do for our trailers and strongly recommend that you check them out.

Back to my preference for the cap sensors. The cap sensors will work with either type stem. The flow through sensors are much bulkier, they attract more attention and I think they are unattractive. Installation and removal for adjusting air pressure with the cap sensor is basically as easy as removing a valve stem cap. Two special wrenches are provided in the kit. To install and remove the flow through sensors you have to use a very small Allen wrench, two of which are provided with the kit, and then try to find the tiny set screw that you previously tightened down on the valve stem. Depending on the position of the tire you may end up standing on your head to find it. If you wear reading glasses it can really be a challenge. All this and it is not as theft resistant as the cap sensor. Another issue that I've had customers report to me is that they have found the airflow through the flow through sensor to be much slower than the valve stem without the sensor installed. A last point regarding the flow through sensors is the battery compartment. I don't like the design. I think the cap sensor much better protects and seals the electronics and the battery. By the way the electronics in all the sensors is GE technology. The price is the same for each type sensor so price is not a consideration. Jerry.





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Old 08-04-2015, 10:00 AM   #37
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Pat, from the posts after your question consensus seems to be to follow the guidance from TST regardless of type of sensor cap. Same advice would apply to any external sensor.

And an easy time to have them installed is when you get a tire rotation done. Even if you aren't due it will cost you an hour of time at a good tire dealer. I'm a big fan of Discount Tire so will give them a shout out. Same tech did my 25FC last year and my Classic this year. And they will spin balance and get the tire balanced. He commented it took a bit of weight to balance. Centramics would make my tires even happier or so I have been told....
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Old 08-04-2015, 10:06 AM   #38
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One last response before I sign off. Regarding the question I was asked about tires. After two failures with Goodyear Marathons I did a lot of research and decided to change to LT tires. Having experience with Michelin XPS Rib tires it was an easy decision. That is what I've run ever since and that's all I'll run in the future. They are expensive but not nearly as expensive as repairing an Airstream.

Whatever you do get a tire monitoring system. If you want the best get at TST. You can get it through me, Mike at TST or any of their distributors.

I'm dropping off this thread. I type slow and this is a very cumbersome method of communication. I'm happy to answer any questions I can whether they be about tire monitors, tires, Centramatics or anything else I can help with, but it needs to be over the phone. I hope this thread has been helpful to all those following it. Jerry O'Connell WBCCI #2105. 813-781-2995.
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Old 08-04-2015, 10:16 AM   #39
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This Mike Benson VP TST. I wanted to jump in and confirm what Jerry O'Connell(Bandits) said regarding the 507 RV Cap Sensors. They are designed to run on rubber valve stems.
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Old 08-04-2015, 04:39 PM   #40
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Update to new TST 507 system installed last week prior to a short camping trip. While hitching the TV to the AS, the alarm went off indicating low tire pressure on a curb side, back axel rear tire. Monitor showed tire 9lbs low. Drove a short distance to a Goodyear tire store, removed sensor, added 9lbs, reinstalled sensor and monitor showed correct pressure with alarm deactivated. This system worked as advertised and added a added comfort level to towing my AS. Thanks TST.
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Old 08-04-2015, 09:05 PM   #41
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I have a Toyota truck tow vehicle that has the OEM TPMS. The wheel sensors are internal with only the metal valve stems showing external. One or more of the sensors are now non-functional. I assume this is a battery issue which requires new sensors. Should there be an issue installing this system on these original TPMS valve stems?

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Old 08-04-2015, 11:42 PM   #42
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Quote:
Originally Posted by ghaynes755 View Post
Pat TST recommends metal stems. Weight of the senders will flex the rubber stems. If you have external sensors get metal stems, have the tire shop balance the tires with the senders installed and you will have a happier tire/wheel. Mine are smiling all of the time. Can't see the trailer in the blinding glare of happy tires I paid $10 per tire for Discount Tire to pull them off, install the metal stem, spin balance and remount.
You can run the 507RV Cap Sensor on a rubber valve stem safely as Jerry said. He did also say that a metal valve stem is better than a rubber valve stem, no flex and they can't dry rot. I agree if you balance the tires with sensors on your tire will be happy😀 If you prefer a flow through sensor than you will need a metal stem due the weight and length of the sensor.
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