| Author |
Message |
Jim Shepherd (Rv_safetyman)
Registered Member
Username: Rv_safetyman
Post Number: 257
Registered: 1-2004
Posted From: 67.142.130.20
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, June 16, 2007 - 11:51 am: | |
Ace has two threads going on this subject. I am starting a third thread with a bit more defined title. I also wanted to make sure folks had a chance to read this safety related post.
I am not a fan of extenders, but I have not found a case where they don't work with tire pressure sensors mounted on the valve stem. With the Doran/Pressure Pro system, there is a gage that comes with the units to make sure the sensor presses on the schrader valve enough to measure the pressure. I have heard of cases where the inside component (guts) of the schrader valve needs to be screwed out a bit, and that could happen with the use of an extender.
Extenders can provide a leak source if they are not installed tightly, or are of poor quality. That is my major beef with them. Many motorhomes/buses have sufficient tire spacing to install the sensor on the inside dual without the extender, by reaching in between the tires. That is the best option if you can do it that way.
If you do have to use an extender, make sure it is purchased from a reputable supplier. I have seen some that look very “cheesy”. I would recommend that you buy them from a reputable commercial truck tire dealer. This is not the place to scrimp on cost.
My main reason for this thread is to emphasize that extenders should be supported even without the sensor. There are various support brackets/plugs that can be purchased at a truck tire store. On our motorhome, we had to install extenders, and the extender vibrated on the stainless wheel cover and came very close to wearing through!!!! That would have caused a very rapid pressure loss.
In the “Monitor” thread, Jack Conrad talks about making your own support.
Jim Shepherd
Evergreen, CO
’85 Eagle 10/Series 60/Eaton AutoShift 10 speed transmission
Bus Project details: http://www.rvsafetysystems.com/busproject.htm |
H3-40 (Ace)
Registered Member
Username: Ace
Post Number: 561
Registered: 10-2004
Posted From: 70.221.185.70
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, June 16, 2007 - 12:54 pm: | |
Thanks for the heads up Jim! I bought my extensions from a truck parts house. They were not cheap at 10 bucks a pop. Well made SS with a hex at both ends. I HAVE to use them because I cannot get between the wheels/tires to attach the sensors. I bet there is only about 3 inches between them if that!
Once the extensions were on, I used the test tool included in the kit and it worked fine! I still have the other 7 wheels to do!
Jacks Idea of a support sounded pretty cool and easy to do! I will try it and see!
Ace |
James Robinson (Jjrbus)
Registered Member
Username: Jjrbus
Post Number: 73
Registered: 12-2000
Posted From: 76.1.180.218
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, June 16, 2007 - 1:05 pm: | |
Good post!! I purchased a set of expensive extenders. I had an inside rear dual go flat because one of them leaked. Fortunately I caught it in time and did no damage to the tire. Extenders are in the trash!!!! |
clark lane (Bus05eagle)
Registered Member
Username: Bus05eagle
Post Number: 17
Registered: 3-2007
Posted From: 74.33.37.119
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, June 16, 2007 - 1:18 pm: | |
Ace you can buy the supports at most truck tire repairs or truck stop don't cost very much |
H3-40 (Ace)
Registered Member
Username: Ace
Post Number: 563
Registered: 10-2004
Posted From: 70.221.185.70
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, June 16, 2007 - 5:41 pm: | |
Clark, thanks for the tip! I have to go back and get a couple more extensions so I will ask about them then!
Thanks again...
Ace |
Stephen Fessenden (Sffess)
Registered Member
Username: Sffess
Post Number: 701
Registered: 1-2002
Posted From: 67.142.130.34
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, June 17, 2007 - 12:43 pm: | |
Ace the best place to buy supports is a tire supply wholesaler between Lakeland and Winter Haven. The holes on my bus tires were not the same size as the ones on many truck tires but they had the black rubber plug supports for the smaller holes at the wholesaler. It is near Recker Highway. |
Dennis Tracy (Eagle10)
Registered Member
Username: Eagle10
Post Number: 14
Registered: 10-2006
Posted From: 74.75.127.129
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, June 17, 2007 - 12:51 pm: | |
I put them on the inside duals because it seemed easier to check the pressure. MY trucking buddy told me not to and he was right as I had a tire go flat because of a leak in one. It cost me $25 at the tire shop to have them tell me that the leak was in the extender. They said they get alot of them that leak. I removed them and no more flat tires. |