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Old 10-03-2016, 03:54 PM   #21
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Getting some new noise/vibration the last trip on the van. Best way to describe is a faint "whump, whump, whump..." that comes on from 35mph up thru 65-70. Doesn't seem to change coasting or not or braking. I was also getting some shuddering out of the LSD so I replaced the fluid and that noise went away.. also new rear pads/rotors, greased the ujoints in rear shaft (Tom Woods ones I installed 15k ago with the UJOR de-quigļfy). Transfer case fluid changed as well. Noise feels to be coming from the mid to rear of the van. Anything else to check? Tires don't feel like they're out of balance and the ST Maxx's have 15k and wear is even. Thanks for any tips

Sent from my SAMSUNG-SM-G890A using Tapatalk
Well, simple cure thankfully. Rotate and a re-balance cured the mystery sound/vibe...
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Old 10-03-2016, 04:37 PM   #22
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The specified whump sounds like tires from my long journey getting rid of vibration. I had my tires balanced twice as well as new driveline ujoints and heat/weight balance. Is the van extended and is there a carrier bearing?
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Old 10-03-2016, 09:41 PM   #23
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All aluminum wheels are not created equally. I have steel wheels on now but have had both steel and aluminum alloy wheels on all different heavy 3/4 and 1 ton trucks. Some of the highest quality Alcoas came on Fords from the factory. They are incredibly strong while reducing unsprung weight. The biggest advantage to the steel wheels is that they are strong and cheap. They can be somewhat straightened out if badly damaged on the trail too. I have internally and fully balanced all different wheels too. I have also noticed more consistent balancing with different brands/weight ratings of tires. Due to the weight of my EB and importance of high speed highway manners, I only run Michelin LTX AT2's. They handle really well even at 90+. If you want perfect balancing and longer tire wear, consider buying a set of Centramatic balancers. There's a reason all the big trucks use them.
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Old 10-04-2016, 07:02 AM   #24
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If you want perfect balancing and longer tire wear, consider buying a set of Centramatic balancers. There's a reason all the big trucks use them.
Just went and looked these up....wow!
Those Centramatic balancers are pretty trick!

Tire Balancers, Tire Balancing, Wheel Balancer and Wheel Balancing from Centramatic







Definitely appear worth considering, especially for serious heavy-tire/off-road rigs like a lot of this forum's Sportsmobiles.....and doubly-so since, quite often, the tires and wheels on those rigs are put through "an occasional a bit of off-road hell" (and in the process also occasionally lose their proper balance) before getting back on the freeway to cruise home. (Losing balance due to possibly tweaking a rim, losing a conventional stick-on wheel weight, chunking out a section of tire tread, getting an unseen big stone caught somewhere in the rim/tire lugs etc....)

The Centramatic balancers' dynamic ability to automatically/continuously rebalance the entire rotating mass, regardless of even whether changing forces are present (such as slowly-drying mud or melting snow/ice chunked onto the wheel/tire assembly) is damn impressive.

Quick Demonstration video from Centramatic website:

Cool stuff. They look like very-possibly worthy companions for adventurers who drive long distances AND off-road on the same set of heavyweight tires.

This outfit appears to indeed have them for big American Van/Truck applications....Econoline, Dodge, F-series etc....
Centramatic Automatic On-board Tire and Wheel Balancers

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Old 10-04-2016, 07:26 AM   #25
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Here's a driveline resource from Ford:

https://www.fleet.ford.com/truckbbas/non-html/Q40.PDF


https://www.fleet.ford.com/truckbbas/non-html/Q14.PDF
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Old 10-04-2016, 08:12 PM   #26
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Quote:
Originally Posted by MountainBikeRoamer View Post
Just went and looked these up....wow!
Those Centramatic balancers are pretty trick!

Tire Balancers, Tire Balancing, Wheel Balancer and Wheel Balancing from Centramatic







Definitely appear worth considering, especially for serious heavy-tire/off-road rigs like a lot of this forum's Sportsmobiles.....and doubly-so since, quite often, the tires and wheels on those rigs are put through "an occasional a bit of off-road hell" (and in the process also occasionally lose their proper balance) before getting back on the freeway to cruise home. (Losing balance due to possibly tweaking a rim, losing a conventional stick-on wheel weight, chunking out a section of tire tread, getting an unseen big stone caught somewhere in the rim/tire lugs etc....)

The Centramatic balancers' dynamic ability to automatically/continuously rebalance the entire rotating mass, regardless of even whether changing forces are present (such as slowly-drying mud or melting snow/ice chunked onto the wheel/tire assembly) is damn impressive.

Quick Demonstration video from Centramatic website:

Cool stuff. They look like very-possibly worthy companions for adventurers who drive long distances AND off-road on the same set of heavyweight tires.

This outfit appears to indeed have them for big American Van/Truck applications....Econoline, Dodge, F-series etc....
Centramatic Automatic On-board Tire and Wheel Balancers

I have had poorly installed wheel weights fall off and didn't notice until I washed them! These work and they're foolproof too!
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Old 10-04-2016, 08:30 PM   #27
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Here is another option for dynamic tire balancing.
DynaBeads Tire Balancing Beads
Another DIY option using the same principle is to put the appropriate weight of plastic air soft pellets in the tire. I know of a few people doing this with street driven rock crawlers running pretty large tires with good success. It does make a funny sound when coming to a stop.
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Old 10-05-2016, 12:43 PM   #28
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I installed a set of Balance Masters - essentially the same thing as the Centramatics shown above - six years ago on my Quigley because I could not keep the BFG All-Terrains that were on it balanced for long. Great investment - they do just what they say they will do. Now the rig is shod with Toyo Open Country MT's but I'm amazed at how smooth the thing runs on the highway. It seems the faster I go the smoother it gets...my GPS told me I hit nearly 90 on Utah I-15 a month ago and the ride was smooth as silk.
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Old 10-05-2016, 12:50 PM   #29
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These are interesting.. Might have to try a set.
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Old 10-05-2016, 12:52 PM   #30
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Bummer, neither the Centramatic or the Balance Masters appear to have sets that will work with a 15" rim.


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