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TOPIC: What happened to steerable front axles on tri-axle trailers?

What happened to steerable front axles on tri-axle trailers? 29 Jun 2020 18:48 #211986

  • Dave_64
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Just thinking not long before retiring, the lead axle on many tri axle trailers, were often steerable, probably I noticed them more on milk tankers that would have been negotiating tight farm pick up areas. Havent seen that many around nowadays, too hard on tyres scrubbing when loaded?? Still see the tri set up where both front and rear axles lift up, running empty on the centre axle only. Not so much the steerable axles though. First saw a set up whenever the tri became popular, both lift up air bag as well as the fixed lead axle with a rod set up that was controlled from, or by the turntable. Another seemingly good idea at the time that outlived its usefulness??

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What happened to steerable front axles on tri-axle trailers? 30 Jun 2020 07:04 #212009

  • lantana jack
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I’m guessing the added complexity and cost wasn’t worth the tire saving.





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“The improver of natural knowledge absolutely refuses to acknowledge authority, as such. For him, skepticism is the highest of duties; blind faith the one unpardonable sin.” Thomas Huxley

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What happened to steerable front axles on tri-axle trailers? 30 Jun 2020 10:44 #212024

  • mammoth
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steering trailer axles are fairly standard in Europe

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What happened to steerable front axles on tri-axle trailers? 30 Jun 2020 20:24 #212043

  • Swishy
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Cogz m80
RE: Steerable n lift axles
if U steer the front axle of a tri it will cut the corner more .... best to steer rear axle on a tri
same with lift axle...... lift the rear so it wont cut the cnr as much
years ago lift axles on a trailer cost about $5000 just to add the lift
we found out more than 50 years ago don't lift an axle but push the axle down to lift the other axles up

WotSezU?

cya
OF ALL THE THINGS EYE MISS ................. EYE MISS MY MIND THE MOST

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What happened to steerable front axles on tri-axle trailers? 30 Jun 2020 20:31 #212044

  • wee-allis
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Swishy, Did that 40 years ago on a 6 x 2 Isuzu so he could get into paddocks to load spuds. A few brackets and air bag on top of diff. Easy.
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What happened to steerable front axles on tri-axle trailers? 02 Jul 2020 18:07 #212121

  • rex
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Gentlemen
While it is somewhat difficult to agree with Swishy I must do so on this occasion. It is the rear axle that will assist with the swept path if it steers.
As for the benefits that is something that would be measured case by case. After all if it had savings and really did improve things it would be an almost every trailer however, we don't see it all that often.
Rex
Making a small effort to save the history of road transport in Australia by being in front of Simms
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