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03-25-2012, 10:41 PM
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#1
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Member
Join Date: Sep 2011
Location: Elk Grove Village, IL
Posts: 65
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How Smooth Should a 2000 Dip Ride?
After reading the tire balance thread here, I have to wonder what is "normal", or what should I expect for a ride in an older 2000 Dip?
I just replaced my tires with Michelin XZE, (255/70R 22.5), late last fall and just took my first long trip from Chicago to Daytona last week. I noticed a slight vibration/shimmy that seemingly would come and go, mostly come. The steering wheel was steady and smooth, but if you stepped in the back, (while someone was driving of course), by the shower area, you could hear and feel a definite throbbing, like a slight out of balance or out of round. BTW, I put all new Bilstein shocks on the coach 2 months ago.
I stopped at Speedco, (what a great place that is), and had all the wheels rebalanced and bought a set of Centramatics while there. The result was a very slight improvement, but you could still feel something.
What kind of ride should I expect with this MH? Will I always have this slight vibration? Do driveshafts give bad vibes with no other indications?
Thanks for any help with this.
Harry P
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6/18 2011 Tiffin Red 36QSA, 340hp ISB, Our 3rd Class A, Me GL1800 & DW GL1800 Trike, 757 ret., 510 club
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03-25-2012, 11:54 PM
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#2
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Junior Member
Join Date: Feb 2012
Location: South Texas Oil Fields
Posts: 22
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Yes, check the u joints.
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Michael and Sherri Phelps and Jackson
03 Phaeton w 3126 cat
99 Wrangler
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03-26-2012, 05:15 AM
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#3
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Senior Member
Monaco Owners Club
Join Date: Apr 2010
Location: Saint Leonard,MD
Posts: 750
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Have you checked the ride height as well? If the rear is off it will effect the driveshaft angle and will cause a roar.
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2005 Safari Panther Diamond IV Cat C13
2013 Avalanche Toad
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03-26-2012, 06:13 AM
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#4
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Senior Member
Join Date: Apr 2008
Location: Freeport, ME
Posts: 4,707
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If I go back and stand right over the rear axle on my MH I can also feel a throb from six tires. Mine does not come and go and it is not real bad and my tires are perfectly balanced. It is still worth checking the U-joints just to make sure.
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Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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03-26-2012, 07:58 AM
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#5
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Senior Member
Monaco Owners Club Freightliner Owners Club
Join Date: Oct 2009
Location: Arlington, VA
Posts: 1,043
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I'm thinking tire problem rather than U-Joint. My interpretation of Harry's "definite throbbing" description is a vibration that occurs per wheel rotation.
We all know that the driveshaft is turning at a significantly higher RPM than tire rotation....so if there is a problem with the driveshaft/U-Joints, the frequency of the vibration is not that of a "throbbing" when at Interstate speeds.
With my OEM Goodyears, I had such a throbbing too, but it was minimal. I got "new shoes" on my rig last fall and I'm pleased to report that it's a smooth as a baby's behind back by the shower!
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Robi & Dale ---- Go Navy ----
2016 Winnie TOUR 42'
Tow: '19 Buick Envision
or: '08 Buick Lucerne
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03-26-2012, 09:18 AM
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#6
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Senior Member
Join Date: Apr 2008
Location: Freeport, ME
Posts: 4,707
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I have six tires back there that go in and out of harmonics with each other and the motor. Nothing wrong with my tires or the driveshaft. Don't get me wrong it is not vibration it is harmonical throbbing with the motor. My tires are also smooth.
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Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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03-27-2012, 09:21 AM
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#7
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Member
Join Date: Sep 2011
Location: Elk Grove Village, IL
Posts: 65
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I did have the ride height checked at Monaco a few months ago, it should still be ok.
Mike, you said that you hear and feel a similar "throbbing" on your coach in the shower area. Does it seem like about 2-3 beats per second, or something completely different?
Michelin has shown some concern so far, and it seems they are willing to help me solve this, or at the least, try to eliminate the tires as the cause.
Harry P
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6/18 2011 Tiffin Red 36QSA, 340hp ISB, Our 3rd Class A, Me GL1800 & DW GL1800 Trike, 757 ret., 510 club
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03-27-2012, 11:31 AM
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#8
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,914
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Harry....When you stand at the rear of the coach, you have a diesel engne that's loping along and some big tires that are transmitting noise no matter what you do. I would check a couple of things, but not make yourself crazy over it.
Here are some ideas from simple to difficult:
Keeping the driveshafts lubed on these coaches are very critical, but they are so massive that they're hard to check without disassembly. I would visually inspect (at ride height) and make sure everything is in alignment and well lubed.
Since the tires are so new and if the tire company/Michellin is willing to work with you, I would swap the two outer duals to opposite sides. If there are some harmonics going on, this might change the frequency and make it better or worse.
Check the differential fluid, check the motor mount bolts and if possible, get the rearend on blocks (again at ride height) and spin the rear wheels cvisually checking the driveshaft for movement, straightness and play at the trans.
Without having several of us drive with you to see if it sounds like what ours do, its tough to diagnose or recommend spending a ton of money on nothing, but I would also hate to tell you its normal and have a driveshaft let go. As was stated earlier, I think you have a bunch of things making music back there, just not a melody that sounds good.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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03-27-2012, 02:55 PM
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#9
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Senior Member
Workhorse Chassis Owner
Join Date: Feb 2005
Location: western wa.
Posts: 561
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had a similar problem with the Knight we had. turned out to be a broken blade on the rad fan. just a thought.
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2018 Jayco redhawk E 22
chevrolet express 4500 chassis
6LT
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03-29-2012, 03:25 PM
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#10
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Senior Member
Monaco Owners Club
Join Date: Sep 2003
Location: Quitman MS
Posts: 2,967
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Also check your harmonic crankshaft balancer
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Walt & Will
2000 Dynasty
2017 Ram Big Horn Crew C 4X4 w/ M&G
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