Tire Pressure Monitoring System |
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offgrid
Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290 |
Topic: Tire Pressure Monitoring System Posted: 16 Oct 2020 at 7:05am |
Great report, thanks!
Maybe try this stuff on the screen https://www.nushield.com/anti-reflective-film
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold |
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pedwards2932
Senior Member Joined: 21 Sep 2020 Online Status: Offline Posts: 337 |
Posted: 15 Oct 2020 at 6:44pm |
I inflated to 75 lbs cold. On the road never saw pressure go above 82 psi temp 90. The pressure I was reading with the TPMS agreed with my digital airpressure guage. Temp agreed with my infrared with in a degree or two. So I would say the TPMG was a success. I unscrewed a sensor and the alarm went off immediately so the rapid air loss alarm works. If you get one you have to make sure you have the display unit turned on when you screw on the sensors so they "connect" this isn't in the instructions. I didn't drive at night to see the backlight but the readout doesn't have great readability because the screen is shiny and reflects and it makes it hard to see if you don't adjust to an angle to avoitd the reflection. Overall I like it.
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offgrid
Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290 |
Posted: 10 Oct 2020 at 7:30am |
Good. You're looking for changes relative to normal operation, so once you have a baseline of bearing/brake/tire temps when everything is working as it should, its easy to quickly identify anything unusual.
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold |
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pedwards2932
Senior Member Joined: 21 Sep 2020 Online Status: Offline Posts: 337 |
Posted: 09 Oct 2020 at 5:10pm |
I have an infrared that I can take with me to compare the TPMS with infrared.
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pedwards2932
Senior Member Joined: 21 Sep 2020 Online Status: Offline Posts: 337 |
Posted: 09 Oct 2020 at 5:09pm |
The TPMS has a temperature sensoe....not sure how accurate it is.
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offgrid
Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290 |
Posted: 09 Oct 2020 at 5:04pm |
Trailer tires have thick sidewalls, so they don't transfer heat through the sidewalls well. That is fine if you inflate them to their specs but if you underinflate them they will flex more and heat up. That's why its generally recommended to inflate trailer tires to their specified pressure cold.
You probably can get away with 70 or 75 psi but what I'd suggest is getting an IR thermometer and checking their temps when you make a fuel stop. Only adds a few seconds to your walkaround inspection. If you do a highway run at 80 psi as a baseline and then one at 70 and the sidewalls aren't appreciably warmer then you're good.
Super useful tool. You can also use it to check bearing temps and brake temps after a long descent too. Once I got mine I've founds numerous uses for it, now I'm not sure how I ever did without it. |
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold |
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Colt
Senior Member Joined: 16 Nov 2019 Online Status: Offline Posts: 383 |
Posted: 09 Oct 2020 at 3:41pm |
There is some leeway in the inflation pressure, but exercise caution and wisdom. Some manufacturers provide load vs pressure charts. Check to see if yours does. Others say the higher load rating tires will be naturally stiff enough that reduced pressure won't soften the ride appreciably, but you can try it and see. However, a high load tire carrying light weight is not likely to flex excessively if the pressure is reduced a *little* so, they should not be heating too much. Charts from Goodyear and Maxxis imply that. My OEM tires were rated for almost exactly what the axle was rated, no reserve capacity. So, I went up to a D to get a little "mohr", and do run max pressure to get the extra rating.
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John
'16 R-Pod 180 |
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pedwards2932
Senior Member Joined: 21 Sep 2020 Online Status: Offline Posts: 337 |
Posted: 09 Oct 2020 at 1:56pm |
The tires came with the trailer and they are brand new so I'd like to use them. I'll try it at 80 psi and see how it goes. Thanks.
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GlueGuy
Senior Member Joined: 15 May 2017 Location: N. California Online Status: Offline Posts: 2629 |
Posted: 09 Oct 2020 at 1:28pm |
LRE tires are a bit of overkill for an Rpod, but 80 PSI is generally the right pressure for them. They will be very, very stiff because of the light weight. LRD would be more appropriate, and they are generally inflated to 65 PSI.
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bp
2017 R-Pod 179 Hood River 2015 Ford F150 SuperCrew 4WD 3.5L Ecoboost |
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StephenH
podders Helping podders - pHp Joined: 29 Nov 2015 Location: Wake Forest, NC Online Status: Offline Posts: 6288 |
Posted: 09 Oct 2020 at 12:29pm |
LR-E tires are a bit excessive. I have LR-D tires on mine which are inflated to 65 psi. However, I would think that inflating to 80 psi for the LR-E tires would be correct, although that would give a harsher ride. The TPMS should handle that. At the proper inflation, the tires should not exceed the TPMS rating.
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StephenH
Happy is the man that findeth wisdom,... ouR escaPOD mods Former RPod 179 Current Cherokee Grey Wolf 24 JS |
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