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04-13-2012, 08:15 AM
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#1
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Established Member
Join Date: Feb 2012
Location: Brentwood
Posts: 43
M.O.C. #12232
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Slight shimmy in 344RET?
I am developing a slight shimmy in our 344RET around 90 MPH. Is anyone else experiencing this? 
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04-13-2012, 08:17 AM
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#2
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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You are probably approaching the sound barrier.
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04-13-2012, 08:26 AM
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#3
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Established Member
Join Date: Feb 2012
Location: Brentwood
Posts: 43
M.O.C. #12232
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I just had to see if anyone would comment. We live in California, and 55 to 60 here. They do not mess around...
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04-13-2012, 08:52 AM
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#4
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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I would venture to say that at that speed, the air conditioners are causing turbulence which leads you to feel the shimmy. If you simply add one of those over the truck cab wind deflectors, you will be fine! 
Bingo
__________________
Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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04-13-2012, 10:17 AM
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#5
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Montana Master
Join Date: Oct 2007
Location: silver creek
Posts: 1,507
M.O.C. #7770
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I think Bingo hit it. also you may be getting a little bounce,so if you put a rear wing at a 22.524 attack angle it should help hold the rears from losing traction!!
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04-13-2012, 11:52 AM
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#6
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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Too much air pressure. Drop 2 lbs per tire, you can probably run at 100MPH plus.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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04-13-2012, 12:41 PM
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#7
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Montana Master
Join Date: May 2011
Location: Fayetteville
Posts: 4,200
M.O.C. #11401
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Probably a loose nut between the wheel and seat LOL. HOOK
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04-13-2012, 01:57 PM
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#8
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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X2 on the rear wing. Another needed option not offered by Keystone. Or as Larry says, it could be a loose nut.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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04-13-2012, 02:21 PM
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#9
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Montana Master
Join Date: Nov 2003
Location: Santa Fe Springs
Posts: 4,189
M.O.C. #639
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II have experanced this when the trailer was not loaded properly, This could be your problem. 
__________________
Pulling a 2004, 2980 RL an oldie but goodie.
Tow vehicle is a 2009 RED RAM 3500 DRW.
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04-13-2012, 03:00 PM
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#10
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,547
M.O.C. #2283
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My kinda guy. A guy got caught here on I81 doing 90 in a safety zone. His fine over was $5000. Then he said he didn't like us much and wasn't coming back. Please come back we need some more of your money. A word to the wise, on I81 at exit 137 to about 143 in Va the speed limit is 60 and the fines start at $250.
Lynwood
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04-14-2012, 01:30 AM
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#11
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Montana Master
Join Date: Jan 2009
Location: Vermontville
Posts: 1,129
M.O.C. #9045
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That shimmy your describing is in fact what happens when you start drafting at that speed, better known as turbulence. Now if you and Bingo get together and start drafting maybe you guys can figure out the proper distance to tame that turbulence. Its a fine art but if you do it correctly it will go away "One way or another" LOL
Dave
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