Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-15-2016, 05:26 PM   #21
Full Time Camper
 
travelin texans's Avatar
 
Join Date: Feb 2016
Location: Texas
Posts: 1,019
Never had an issue with lack of signal with TST, even when I get a low battery warning all 10 still have signal & no booster
required.
__________________

Danny & Linda
Fulltimers since '08
2013 Redwood 36FB (FOR SALE)
2013 GMC Denali DRW
travelin texans is offline   Reply With Quote
Old 02-15-2016, 06:33 PM   #22
Full Time Camper
 
woodwalker's Avatar
 
Join Date: Oct 2015
Location: ca
Posts: 517
My tire minder came with a booster that I mounted in the battery compartment. They worked without it but I figured instead of throwing it out i may as well mount it. The first time it saved me I adjusted the pressure in the tires the evening before leaving. Pulled out at 6 am and 5 miles down the road it went off. Came to find that the nut holding the valve stem in place had backed off causing the tire to start leaking. The other part of them is when you look at a 100 psi tire it looks the same whether it has 50 or 100 psi in it they give fairly accurate psi and temp
woodwalker is offline   Reply With Quote
Old 02-15-2016, 06:53 PM   #23
Full Time Camper
 
Join Date: Oct 2004
Location: Texas
Posts: 1,508
Quote:
Originally Posted by rcflyer View Post
The big issue I have with the TST is the 1 hr time before it will notify you of a loss of signal.
You may be right about 1 hr, I've never checked it, but then the probability of loosing signal on a single tire and that same tire failing within 60 min. is pretty low.

I will add this, having had both external and internal sensors I can say that external sensors are pretty useless when it comes to temperature readings. Therefore they are unlikely to provide any help when it comes to detecting other issues like hot bearings or dragging brake shoes. I've had internal sensors on my fiver for 3-1/2 yrs now and the diesel exhaust from 20 ft away raises the temps inside the curb side trailer tires by 6-10 degrees above the street side tires. Previously with external sensors the temps were more influenced by sunshine or wind direction than by anything actually happening with the tire/wheel.
__________________
Larry Day

Texas Baptist Men-Retiree Builders member since '01
13 Silverado 3500HD D/A, 2wd CCSB srw, custom RKI bed
11 Cruiser CF32MK
http://www.picturetrail.com/dayle1
Dayle1 is offline   Reply With Quote
Old 02-16-2016, 07:53 AM   #24
Seasonal Camper
 
Join Date: Jul 2009
Location: Idaho
Posts: 372
We are missing the point about loss of signal.

If the TST gets at least one signal within one hour it will display that pressure reading for one hour.

Example the TST sensor sends a signal once every 5 minutes. So in one hour it sends about 12 signals per hour. Lets say you have a monitor that is marginal in signal strength and manages to get one signal to the receiver at least once per hour.

Then for most of the time you do not have protection and will never know it.
rcflyer is offline   Reply With Quote
Old 02-16-2016, 08:21 AM   #25
Full Time Camper
 
Join Date: Oct 2004
Location: Texas
Posts: 1,508
That only means that the display values may not be the most recent data. If there is a sudden loss of pressure it alarms immediately, within a second or two. So, in your example the sensor would have to loose signal for 60 min on THE tire that was going to fail in that same 60 min. I've got probably 600 hrs towing with TST with one alarm and two known signal losses
Dayle1 is offline   Reply With Quote
Old 02-16-2016, 01:39 PM   #26
Full Time Camper
 
travelin texans's Avatar
 
Join Date: Feb 2016
Location: Texas
Posts: 1,019
I must have a different model or something as the temps & pressure appear to change regularly, no hour delay!! If your temps are affect by the truck exhaust I'd be checking bearings or brakes, there's a 100 different things that would affect the temp, but IMO exhaust would not be one of them, or maybe some stacks on your truck.
__________________

Danny & Linda
Fulltimers since '08
2013 Redwood 36FB (FOR SALE)
2013 GMC Denali DRW
travelin texans is offline   Reply With Quote
Old 02-17-2016, 07:01 AM   #27
Full Time Camper
 
Join Date: Oct 2004
Location: Texas
Posts: 1,508
Quote:
Originally Posted by travelin texans View Post
If your temps are affect by the truck exhaust I'd be checking bearings or brakes, there's a 100 different things that would affect the temp, but IMO exhaust would not be one of them, or maybe some stacks on your truck.
Again, external temp sensors are pretty worthless. Tire temperature info is obtained via conduction thru the valve stem, meanwhile the sensor is rotating thru the outside air at 600 rpm. Kind of like holding the wrong end of a thermometer in your hand, sticking the bulb in front of a fan and then trying to determine if you are running a fever. The effects of sun and wind are far more dominate than tire temp, bearings or brakes.

If you haven't used internal sensors then you probably don't realize the difference. I am 100% convinced that internal sensors provide more meaningful temperature data. That is why I mentioned the effect of diesel exhaust. Yes it is real but 6-10 degrees higher temps is not a big concern. I did some research and there are cases of diesel exhaust, especially during regen, actually melting trailer exterior plastic parts. So, I do pay attention to the plastic corner on my Cruiser. However, adding stacks is not a solution as that would put hot exhaust even closer to the trailer, at the front cap, clearance lights, decals and rain gutter.

Quote:
Originally Posted by travelin texans View Post
I must have a different model or something as the temps & pressure appear to change regularly, no hour delay!!
Yes it changes regularly, according to TST, the sensors transmit about every 2 min. But, maybe you misunderstand 'RCFLYER' point. In the event of a signal loss, the display will continue to show "old" data, no 2 min. updates. This is ez to see, just unhook from the trailer, drive about 1/4 mi and see how long the display continues to show 'data' for the trailer sensors.
__________________
Larry Day

Texas Baptist Men-Retiree Builders member since '01
13 Silverado 3500HD D/A, 2wd CCSB srw, custom RKI bed
11 Cruiser CF32MK
http://www.picturetrail.com/dayle1
Dayle1 is offline   Reply With Quote
Old 02-17-2016, 08:58 AM   #28
Seasonal Camper
 
Join Date: Jul 2009
Location: Idaho
Posts: 372
When it comes to TPMS systems and in particular the TST system there is a lot of misinformation and understanding how the systems work.



This is from a TST manual.

Instantaneous reading of a tire problem will not happen. As stated the monitors detect the pressure every 6 seconds. Thus a rapid loss of pressure can take 6 seconds before the data is sent to the monitor. I have noticed this when I have adjusted pressures on my TST system. At 60 mph that means you have gone about 1/10 of a mile before a pressure loss alarm will be received.

Routine pressure updates are only sent to the monitor every 5 minutes.

A loss of signal alarm will not be displayed by the monitor until it has not received a routine update for one hour.

If you have ever received a loss of signal alarm that means you did not have protection from that sensor for the previous hour. As such your system is not very reliable.

I also have found the temperature of the tire on the TST is worthless. The typical readings I get when going down the highway at 60 mph is within 5 degrees of ambient. My infrared meter shows actual tire temperatures way above ambient after 10 miles or so.
rcflyer is offline   Reply With Quote
Old 02-17-2016, 09:19 AM   #29
Full Time Camper
 
Join Date: Oct 2004
Location: Texas
Posts: 1,508
Quote:
Originally Posted by rcflyer View Post
We are missing the point about loss of signal.

If the TST gets at least one signal within one hour it will display that pressure reading for one hour.

Example the TST sensor sends a signal once every 5 minutes. So in one hour it sends about 12 signals per hour. Lets say you have a monitor that is marginal in signal strength and manages to get one signal to the receiver at least once per hour.

Then for most of the time you do not have protection and will never know it.
You are right, sort of. TST says it transmits every 2 min. IF a sensor transmitted just once each hr AND the driver doesn't notice, there is no protection for that tire. I don't know the probability of repeating intermittent signal loss. But using my data of 1 tire event and 2 signal losses in excess of 60 min in 30 K miles, the probillity of both events occurring at the same time and on the same tire is greater than 1 in 20 million
Dayle1 is offline   Reply With Quote
Old 02-17-2016, 09:47 AM   #30
Full Time Camper
 
Join Date: Oct 2004
Location: Texas
Posts: 1,508
Quote:
Originally Posted by rcflyer View Post

. Thus a rapid loss of pressure can take 6 seconds before the data is sent to the monitor.. At 60 mph that means you have gone about 1/10 of a mile before a pressure loss alarm.
Or it will alarm in 0 seconds. Statically it will happen in 3 seconds and any monitor system will have some delay, with limited battery power sampling at nanosecond intervals isn't too practical.
Dayle1 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Crossroads RV or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 07:05 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.