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??
If U don't like my Driving .... well then get off the footpath ...... LOL
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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
OF ALL THE THINGS EYE MISS ................. EYE MISS MY MIND THE MOST
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The following user(s) said Thank You: Dave_64, PaulFH
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.
Making a small effort to save the history of road transport in Australia by being in front of Simms
The following user(s) said Thank You: cobbadog, Dave_64