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Old 07-28-2014, 09:09 PM   #15
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No sway on mine. I have a tag axel.
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Old 07-28-2014, 09:11 PM   #16
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No sway on mine I have a tag axel.
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Old 07-28-2014, 09:13 PM   #17
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Thanks everyone for the warm welcome and the insights! I'm thinking of starting small - 32' or less as a first MH. Great advice all around.
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Old 07-29-2014, 05:38 AM   #18
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if you plan on towing your toad could also cause more excessive tail wag.

We tow a big boxy jeep that catches every cross breeze and even when we are driving it tends to move about.

a 500$ rear trac bar makes a ton of difference in a good way. As others have said, go with something that has decent wheel base ratio. Then there are a few cheap mods that can be done after that.
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Old 07-29-2014, 08:11 PM   #19
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We had a 35 foot Georgie Boy Landau that wanted to wander. We found the front was to light. After adding more weight up front the wandering went away.
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Old 07-30-2014, 09:19 AM   #20
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There must be something to the DP vs front engine aspect of this. We have a 41ft DP and it does NOT sway a bit. If it did it would be G O N E! I couldn't imagine wrestling that much weight down the highway.........
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Old 07-30-2014, 12:20 PM   #21
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Rich n Linda - Our Winnebago Suncruiser 32V brochure lists Length as 32'11" (or 395") and Wheelbase as 200". This would give us a 50.6%. However, our actual measurements are 391" and 204" respectively. This gives us 52.2%. Wow! We just went from nearly dangerous to almost stable. My point is it might be a good idea to get as accurate as possible actual measurements before doing the calculations. We haven't noticed any fishtailing, just front end issues. Oh well, that's what we have to live with. Fortunately we don't load it to full capacity; I suppose that helps.

We've had some issues with sloppy steering and swaying. Most of the swaying was just corrected by replacing the bushings and one missing bracket on the front 1-5/8" stabilizer bar (it was not even connected to the frame on passenger side and just "floating" up and down and all around). I'm also looking into the bell crank because there seems to be a lot of free travel in the steering wheel, but that's not a sway issue.
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Old 08-01-2014, 02:04 AM   #22
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Per the spec sheet, my 2013 Itasca Sunstar 26HE has a wheelbase of 158" and an overall length of 323". That is a ratio of 48.9%.
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Old 08-01-2014, 04:04 AM   #23
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Another thing to consider, that formula may have some validity, however a far more important factor to stability is weight distribution. If the coach is design is such that the center of mass is properly located and the steering geometry is correct, it will be stable.
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Old 08-01-2014, 05:12 AM   #24
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When we got new tires, they only had 70 pounds of pressure. I increased it to 110 in the rear and 90 in the front and they swaying problem went away. Now all I need to do is to tighten the steering box a little to cut down the free play in the steering wheel.
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Old 08-01-2014, 06:24 AM   #25
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We went from a 26 ft class c to a 28 ft class a. There was more "sway with the a", but it wasn't difficult to adjust to when driving. After a few miles you learn to drive it a bit different i.e. making all movements somewhat slower.
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Old 08-01-2014, 10:08 AM   #26
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The larger Class As also feel more stable with the big motor at the very back and a large generator at the very front. This high polar moment of inertia with a long wheelbase helps to counteract any forces that would induce a rapid sway movement.
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Old 08-01-2014, 10:30 AM   #27
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Quote:
Originally Posted by jerztime View Post
I'm thinking of starting small - 32' or less as a first MH.

Ever heard the saying ".....buy your 3rd motorhome 1st ...." ?

Refers to people buying the small motorhome 1st, finding out it's too small, then trading up to a larger coach.....finding out it's too small.......then finally getting a coach that makes them happy. All that trading, costs $$$$$$ vs buying the right one to start with.

If you have the budget.....seriously consider getting a coach larger than you think you need....because as new RV owners, most underestimate what will make them happy.

Again if you have the budget to spend.....seriously consider getting the diesel pusher 1st also, as the air cushion ride, air brakes, etc. are also things the new RV owner doesn't think they need, but later wishes they had them.

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