GABob Report post Posted September 17, 2018 Question for someone with a later E450 Ford Chassis...by chance do you know the size of the valve stem stabilizer needed for the 4 slot w16 inch wheel? I keep the RV about 30 mins away and would like to order some without having to run over there. Thanks in advance! Share this post Link to post Share on other sites
GABob Report post Posted September 17, 2018 Found it...in case anyone else needs to know, the Part number is VHRG4, 4.25" by 2.25". Share this post Link to post Share on other sites
jleamont Report post Posted September 17, 2018 GABob, what year chassis do you have? Share this post Link to post Share on other sites
GABob Report post Posted September 17, 2018 It's a 2018 chassis Share this post Link to post Share on other sites
wayne77590 Report post Posted September 18, 2018 Dually Valves may have some. Share this post Link to post Share on other sites
aufgeblassen Report post Posted November 16, 2018 What can go unstable about a valve stem? 😎😎😎 just curious 😎😎😎 Share this post Link to post Share on other sites
rsbilledwards Report post Posted November 16, 2018 Some of us with long stems from the inside dual could use some support, particularly if the rubber plug support will not stay put or is missing. Share this post Link to post Share on other sites
wayne77590 Report post Posted November 17, 2018 7 hours ago, Aufgeblassen said: What can go unstable about a valve stem? 😎😎😎 just curious 😎😎😎 Especially if you are using a tire pressure monitor system. The sensors will whip around by the force of the rotation and wind combinations. this could damage the valve stem. It's nice to have the stability of the rubber wheel grommet. Share this post Link to post Share on other sites
aufgeblassen Report post Posted November 17, 2018 10 hours ago, wayne77590 said: Especially if you are using a tire pressure monitor system. The sensors will whip around by the force of the rotation and wind combinations. this could damage the valve stem. It's nice to have the stability of the rubber wheel grommet. I'm about to add valve stem extenders (hard, not flexible) and TPMS at the ends, but am pretty sure my valves are hard mounted (i.e. METAL), rather than just rubber, so should be fine. BTW: They don't "whip around". The G forces are static, rather than dynamic when wheel is spinning. I mean big rig trucks have hard mounted valve extenders w/o "stabilizers" - no worries. Share this post Link to post Share on other sites
wayne77590 Report post Posted November 17, 2018 Not whipping around but there will be much more vibration where the stem goes into the tire. The rubber wheel grommets for the stems are not that expensive. Dually Valve is where I got mine from. Share this post Link to post Share on other sites
jleamont Report post Posted November 17, 2018 My solid inner stems were not supported, they notched the outer wheel from rotation. For Less than $20.00 they are now supported. Share this post Link to post Share on other sites
aufgeblassen Report post Posted November 19, 2018 On 11/16/2018 at 11:26 PM, wayne77590 said: Especially if you are using a tire pressure monitor system. The sensors will whip around by the force of the rotation and wind combinations. this could damage the valve stem. It's nice to have the stability of the rubber wheel grommet. They don't "bounce around"! The G-forces go in one direction ONLY; NOT dynamic vibration, "bouncing around" the TPMS sensor. The very MOST that would happen, is it gradually contacts the rim (with increasing vehicle speed) & simply stops there. No worries! 😃 Share this post Link to post Share on other sites
wildebill308 Report post Posted November 19, 2018 2 hours ago, Aufgeblassen said: They don't "bounce around"! The G-forces go in one direction ONLY; NOT dynamic vibration, "bouncing around" the TPMS sensor. The very MOST that would happen, is it gradually contacts the rim (with increasing vehicle speed) & simply stops there. No worries! 😃 Wow, thank you for your observations. But I don't drive on a glass smooth surface. The roads I am on have tar strips potholes bridge transitions rumble strips and generally rough surface. I am pretty shure that if it vibrates the entire coach it is causing the valve stems to bounce around especially if you have a TPMS sensor on the end of it and unsupported. You might shoot some video and prove me wrong. Bill Share this post Link to post Share on other sites
jleamont Report post Posted November 19, 2018 Mine wore a notch into the wheel at the hole, no bouncing, but long term cannot be good. Share this post Link to post Share on other sites
elkhartjim Report post Posted November 20, 2018 9 hours ago, Aufgeblassen said: They don't "bounce around"! The G-forces go in one direction ONLY; NOT dynamic vibration, "bouncing around" the TPMS sensor. The very MOST that would happen, is it gradually contacts the rim (with increasing vehicle speed) & simply stops there. No worries! 😃 You're stating the valve stem "gradually contacts the rim & simply stops there". You don't really believe that do you? Share this post Link to post Share on other sites
jleamont Report post Posted November 20, 2018 9 hours ago, elkhartjim said: You're stating the valve stem "gradually contacts the rim & simply stops there". You don't really believe that do you? yes, it stops there, said another way...the stem stress fractures and you stop on the side of the road. That I believe....wait, I experienced it with the last coach, turned into roadside triage. , as Herman says, "I got a shirt to prove it", well maybe not a shirt, but I have a DW to remind me of it, every time we pass that spot! happened on Thanksgiving day 5 years ago on I-95 in Baltimore Share this post Link to post Share on other sites
elkhartjim Report post Posted November 20, 2018 I understand now, Joe. I thought he meant the valve stem moved out until it touched the wheel and the valve stem stopped and didn't move. Share this post Link to post Share on other sites
manholt Report post Posted November 20, 2018 Aufgeblassen. I'm no expert on what happens, when my 45 foot "Rolling Earthquake", goes down the road. I do know, that as a retired engineer, all static equations are dysfunctional ! So, with that said, I would appreciate some proof. Share this post Link to post Share on other sites
aufgeblassen Report post Posted November 20, 2018 Oh, OK. I did not take into account for less than ideally aimed valve stems. If aimed properly, there should be nowhere near enough flexing of the valve stem (or TPMS) to impact the rim. If you have THAT much flexing, the valve stem would fatigue & fail in short order. They are generally designed for 100s of 1,000's of miles (i.e. for like big rigs). 😎 Share this post Link to post Share on other sites
manholt Report post Posted November 20, 2018 Big Rigs ? Talk to Joe, I think he's got several dozen in his care...OTR's! Share this post Link to post Share on other sites
wayne77590 Report post Posted November 21, 2018 Aufgeblassen, I have grommets for my long stems, apparently you don't. Bookmark this page and in a couple years we will compare notes, if that is okay.😀 Share this post Link to post Share on other sites
jleamont Report post Posted November 21, 2018 14 hours ago, manholt said: Big Rigs ? Talk to Joe, I think he's got several dozen in his care...OTR's! 1300 TRACTORS 3000 TRAILERS 500 FORKLIFTS We do not use valve stem extenders at work. You have to keep them simple here, the more to break from abuse the more road calls Share this post Link to post Share on other sites
aufgeblassen Report post Posted November 21, 2018 1 hour ago, jleamont said: 1300 TRACTORS 3000 TRAILERS 500 FORKLIFTS We do not use valve stem extenders at work. You have to keep them simple here, the more to break from abuse the more road calls They had 'em on trailers with companies (4 different ones from 5/05-6/13) I leased onto as a CVPOO (Commercial Vehicle Professional Owner Operator). They would have frowned upon me taking them off. 🤩 Share this post Link to post Share on other sites
jleamont Report post Posted November 21, 2018 Trailers we run auto inflation systems on newer. older, nothing. Share this post Link to post Share on other sites
aufgeblassen Report post Posted November 21, 2018 18 minutes ago, jleamont said: Trailers we run auto inflation systems on newer. older, nothing. That was then, this is now. They don't work too well, when your tire blow to pieces! Share this post Link to post Share on other sites
