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Torsion or Leaf spring axles for trailer?

select-fireselect-fire Member Posts: 69,518 ✭✭✭✭
edited January 2012 in General Discussion
Getting ready to order an Aluminum enclosed car trailer with 5200# axles. Trailer weight is 2700# whereas the same steel trailer is #4600. Which type axle is going to give the best duty?

Comments

  • nordnord Member Posts: 6,106
    edited November -1
    Torsion if you have the choice.
  • pingjockeypingjockey Member Posts: 1,879 ✭✭✭✭
    edited November -1
    Have built trailers with and used both. Heaviest was a tandem
    with 7k's. Like the torsion best, much smoother ride. Had a
    longer waranty as well.
  • RosieRosie Member Posts: 14,525 ✭✭✭
    edited November -1
    If you go with torsion go with Dexter. I designed and built the machinery for one company which I won't mention. I know every thing a person would want to know about torsion I think. Email me if you have a question and I will answer it to the best of my ability. There is one company you want to stay away from out there.
  • select-fireselect-fire Member Posts: 69,518 ✭✭✭✭
    edited November -1
    Found this article


    What Is the Difference Between Standard & Torsion Trailer Axles?


    Torsion axles are suitable for lighter loads.
    There are basically two types of common trailer axles. Torsion axles use a rubber spring for suspension, while standard leaf spring axles use a metal spring. There are many variations on the leaf spring axle, but they have essentially the same properties. The choice between a torsion and leaf spring axle really depends on the size and weight of your trailer, and your particular needs.

    Size
    Rubber torsion trailer axles are more compact than other types of trailer axles, so they save space and weight on a small trailer. Common leaf spring axles are generally larger and heavier.

    Smoothness
    The rubber elastomer springs used in torsion axles help smooth out the ride and absorb a lot of the bumps. Torsion axles are also quieter than leaf spring axles, which tend to squeak every time the spring bounces.

    Load Limit
    Because standard axles are bigger and tougher than torsion axles, they are able to hold more weight and support a larger trailer. Torsion axles are smaller partly because the design allows it, but also because they simply cannot support large trailers. Torsion axles do not spread the weight around the frame as much as leaf spring axles, so it is harder on the trailer. In a multiple axle configuration, standard axles share the load with each other, while torsion axles remain independent. This means that when you pass over a bump with a multiple torsion axle trailer, one of the axles is under a lot of stress while the other is under relatively little.

    Lifespan
    The rubber in torsion axles does not age well. Over a period of years the rubber elastomer hardens, becomes brittle and eventually cracks. Standard axles eventually wear out as well, but they normally last much longer than torsion axles.
  • tacking1tacking1 Member Posts: 3,844
    edited November -1
    the torsion springs on my boat trailer are corroded like mad. Are these generic in size? If I can get enough of the old ones off should I be able to find replacements?
  • select-fireselect-fire Member Posts: 69,518 ✭✭✭✭
    edited November -1
    quote:Originally posted by Rosie
    If you go with torsion go with Dexter. I designed and built the machinery for one company which I won't mention. I know every thing a person would want to know about torsion I think. Email me if you have a question and I will answer it to the best of my ability. There is one company you want to stay away from out there.


    They are Dexter axles, not the chinese or other brand. In fact the trailer company is in Elkhart along with Dexter. I read Dexter's webpage that said the torsions bolt or clamp to the frame. I have no idea how a leaf spring axle would connect to an aluminum frame. I know Featherlite uses torsions on their trailers.
  • 11BravoCrunchie11BravoCrunchie Member Posts: 33,423 ✭✭
    edited November -1
    quote:Originally posted by select-fire
    quote:Originally posted by Rosie
    If you go with torsion go with Dexter. I designed and built the machinery for one company which I won't mention. I know every thing a person would want to know about torsion I think. Email me if you have a question and I will answer it to the best of my ability. There is one company you want to stay away from out there.


    They are Dexter axles, not the chinese or other brand. In fact the trailer company is in Elkhart along with Dexter. I read Dexter's webpage that said the torsions bolt or clamp to the frame. I have no idea how a leaf spring axle would connect to an aluminum frame. I know Featherlite uses torsions on their trailers.



    Leaf spring axles would probably connect to an aluminum frame the same way they connect to a steel frame: with a spring pivot at one end, and a hanger/shackle at the other.
  • RosieRosie Member Posts: 14,525 ✭✭✭
    edited November -1
    The problem with torsion is the rubber is frozen into a specific shape at -200 degrees under about 100 tons of pressure depending on the rubber size. If it is not assembled right it will be cracked on the assembly table. I don't believe there is a limit on weight capacity of a torsion axle. I know there are 6000 pound axles made. The advantage of course with rubber torsion is independent suspension.
  • LesWVaLesWVa Member Posts: 10,490 ✭✭
    edited November -1
  • select-fireselect-fire Member Posts: 69,518 ✭✭✭✭
    edited November -1
    Dexter warranties the torsion 5 yr. and the spring axles 2 yr.
  • evileye fleagalevileye fleagal Member Posts: 4,238 ✭✭✭
    edited November -1
    my 7x16 have the torx axles, they are great until you have to replace one. wow, those things are as high as girffie p*(%%+.
  • NEIAPredatorNEIAPredator Member Posts: 1,443
    edited November -1
    Less than 10000 lbs trailer torsion axles and over 10000 lbs go with spring. That's my rule of thumb.
  • Riomouse911Riomouse911 Member Posts: 3,492 ✭✭✭
    edited November -1
    All of the 6 tandem-axle trailers I have owned have been leaf spring ones (2 travel, two flatbed, and 2 boat). I never had an issue with any of them.
  • TexasVetTexasVet Member Posts: 2,847 ✭✭✭✭✭
    edited November -1
    My 2004 24' Pace Rally enclosed trailer has the Dexter torsion axles - never had a problem.
  • bpostbpost Member Posts: 32,669 ✭✭✭✭
    edited November -1
    Torsion, listen to Rosie.
  • HandLoadHandLoad Member Posts: 15,998
    edited November -1
    Under Heavy Braking and Load, the Trailing Link Torsion Axle will make the trailer Squat, while your Hitch wants to rise - that nearly doubles the Downward Motion of the Rear Bumper of the Trailer.

    Torsion Axles are weaker against Cornering Loads, and under Static or Dynamic (Like going over A Curb or Limb) Loads.

    The Old Straight Axle, With Semi-Elliptical Springs is a Tried-And-True Design, with features that tend to Fail in Generally Beneficial ways. Makes for more ground Clearance.

    You Pays Yer Money, YOU Takes Yer Chances.
  • 11BravoCrunchie11BravoCrunchie Member Posts: 33,423 ✭✭
    edited November -1
    After having looked at how a torsion spring axle works, I'd rather go with the tried-and-true leaf spring design. What you lose in ground clearance looks like it's made up for in strength of the system as a whole. I just don't trust rubber products as a structural component that much. But, I'm no expert on the topic, so go with whatever you feel best suits your needs.
  • RosieRosie Member Posts: 14,525 ✭✭✭
    edited November -1
    The rubber in a torsion is made especially for that purpose and held to very close tolerances. A side note. I built several machines to try and pull the rubber torsion axles apart when they were out of specs and never did succeed. We could never build clamps strong enough. They would break every time and our engineers put in a lot of time on them. We had to build very thick shields around them. We finally gave up and burned the rubber and nylon out to salvage the parts that we could.
  • JnRockwallJnRockwall Member Posts: 16,350 ✭✭✭
    edited November -1
    quote:Originally posted by nord
    Torsion if you have the choice.


    +1
  • select-fireselect-fire Member Posts: 69,518 ✭✭✭✭
    edited November -1
    Dealer's are like vultures. Have 3 that are bidding on the exact type unit.

    Spoke with two dealers yesterday. They are very close to the same price for exact units. 22K dollar Featherlite trailers are out. Two other companies build similar trailers as Featherlites and I am going with one of those with Dexter torsion axles. Torsion axles run independant of one another. IF tires fail, spare fails I can possibly get home on one axle. Spring axles drop down and eliminate moving the trailer if a malfuction occurs.
  • MobuckMobuck Member Posts: 14,155 ✭✭✭✭
    edited November -1
    On rough or uneven roads/ground the springs with equalizer are superior to the torsion springs. Torsion will allow ALL THE LOAD to ride on one tire/axle while the equalizer does what it's name says.
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