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Conference ssdevo::rv

Title:RV notesfile
Notice:Welcome to RV's new home!roductions * Note 8 4-Sale/Wanted
Moderator:ALEPPO::BOWKER
Created:Fri Feb 27 1987
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1134
Total number of notes:11505

1130.0. "Towing and sway" by NIOPS1::THIBODEAU () Mon May 05 1997 13:52

    Well, I have another question for your RV'ers.
    
    As I said in an earlier note, I'm new to the big rig. I just got a 30'
    trailer and my trip to Disney was my first with the camper. I used to
    have a popup. 
    
    Anyway, the trip went well, the only problem I really had was dealing
    with trailer trucks. I seems to get sucked in, then pushed away and
    then released. This was mostly down south. I felt like part of my
    problem was that I was running my tires at 35lb like they say on both
    the truck and trailer. They seemed to be a bit soft which can cause a 
    mushy reaction from the truck back end. 
    
    My question is, should I boast the presure to say 40 or 45 when I have
    a load, get new/better tires for towing or something else. I don't
    think I loaded the trailer to much in the front though I felt like it
    as kind of low. I did go up a link on my weight distribution chains
    about halfway down which seems to make a difference. 
    
    Any insite from you experienced towers would be appreciated. 
    
    Alan
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1130.1crack open your trailer windows ;^)SUBSYS::VIDIOT::PATENAUDEAsk your boss for ARRAY's...Mon May 05 1997 15:212
Try it. It works. It breaks the vacuum caused by the passing.
1130.2Maybe...SUBSYS::alcor.shr.dec.com::smithApps EngineerMon May 05 1997 15:474
If you don't already have them, going to a true truck tire (8 ply) 
with a stiffer side-wall (and ride!) may help...

Joe
1130.3Tire pressure recommendation...JV::LORIONTue May 06 1997 07:2617
    After moving from a 24' travel trailer to now having a 28' 5th wheel
    trailer I now realize how much my previous trailer used to move behind
    me. Being the son a a truck driver and my father having a trailer
    himself, I was warned about being suck into trucks as they were
    passing.
    I made it a point to by a sway control for my hookup, but what I found
    most affective was the tire pressure being correct. Now I had a 24'
    Starcraft and the recommended tire pressure was 45psi cold. I found
    that if I had them @45psi my swaying was limited to sudden jerks
    avoiding the occasional (Oh I didn't know you were towing 2tons when I
    cut in front of you).
    
    I would definately check your tire pressure recommendation, 35psi seems
    awfully low.
    
    
     Scott
1130.4CSC32::A_WHITEThu May 08 1997 14:2714
On the other hand... NEVER exceed your time's pressure recommendations!
Go to a heavier/stronger 6-ply or 8-ply tire, whatever you can get for the
trailer or for the tow vehicle. Then you can run the tires at 45 (6-ply)
or 65 (8-ply) or 80 (10-ply)! 

Now you know why people go to 5th-wheel trailers -- they sway MUCH less
than pull-trailers! My next one will be 5th wheel. Also, of course, a "fifth"
has much more room inside for the same length vehicle; they measure the
length differently! On a pull-trailer the hitch is included in the length;
on a 5th there is no hitch (if you know what I mean -- nothing sticks out
in front of the body).

Been living in motor homes and trailers for years... They sure are small inside 
but big outside!
1130.5PEAKS::OAKEYThu May 08 1997 16:2010
Re: <<< Note 1130.4 by CSC32::A_WHITE >>>

>>On the other hand... NEVER exceed your time's pressure recommendations!

Ever read "Fear and Loating in Las Vegas" by Hunter S. Thompson?

"These are experimental tires!" (as he pumps ordinary car tires up to over
50psi...)

                        Roak :-)
1130.6Everything helpsALLVAX::ONEILLMon May 19 1997 15:3317
    
    
    	Make sure that the trailer and tow vehicle are level, there should
    be a nice line from the front bumper to the rear bumper of the trailer.
    Adjust the ball mount, my ball mount is bolted to a "L" shape braket,
    the ball mount can be raised or lowered.
    As stated multy ply'd tires do make a di.fference, normal "car" tires
    lack the sidewall strength, an 8-10 ply will do the trick. Sway bar
    will also help, it's tough to control the tow vehicle when the tail
    wages the dog ... 
    When possible, I move over into the break down lane (1-2 feet) when a big 
    truck wants to pass, the distance between vehicles easies the impact on 
    the trailer sway.
    I currently pull a 36' Trailer (non-5th wheel) with a 10' push-out
    My truck is a F250 Over 8600 lbs with 10 ply tires
    
    Happy Camping