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Rank: Member
Groups: Member
Joined: 6/20/2011
Posts: 21
Location: Kalamazoo
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Greetings from Michigan, the land of many axle, non-steering trailers.
I have a question for our European friends.
On a multi axle, steering semi trailer, how do the steering axles '' know'' when to activate ?
For example, on a tight radius curve the wheels steer more.
Is it hydraulic activated thru the drivers steering input ?
Is there a hydraulic line going to the truck ?
Can the driver control how much steer angle from the cab ?
Thank you for your time,
Tim
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Rank: Advanced Member
Groups: Member
Joined: 6/9/2010
Posts: 779
Location: Alessandria, Italy
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Rank: Member
Groups: Member
Joined: 6/20/2011
Posts: 21
Location: Kalamazoo
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Fabio , Thank you very much for the very detailed reply.
I knew someone would be able to answer this question.
Thanks again for all your time putting this together.
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Rank: Advanced Member
Groups: Member
Joined: 8/9/2002
Posts: 996
Location: worthington, ohio
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Thank you for a very detailed explanation of this type of set up. I have often wondered why this type steering is not used in the United States. From the people I spoke with is the cost of operation. I drove straight dump trucks with steering drop axles for number of years. The cost of shock adsorbers, bushing and even cracked castings
was unreal. I would think that pavement wear would be greatly reduced by turning as opposed to dragging the tires around when turning. A couple of people brought up how much narrower and twisting roads are in Europe making this type of steering the only way you can use a long trailer. I sure love and admire how these drivers handle these rigs.
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Rank: Advanced Member
Groups: Member
Joined: 6/9/2010
Posts: 779
Location: Alessandria, Italy
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You're welcome. I don't know why this type of axle/trailer aren't used in the United States. Something is available in Usa: http://www.goldhofer.de/fileadmin/downloads/prospekte/EN_Transport_Semitrailer_STZ-H_Tridem_2013.pdf
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Rank: Advanced Member
Groups: Member
Joined: 6/4/2006
Posts: 7,752
Location: arlington, Tx
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I wish we had steerables would come in handy around the city
NIkl Scale Models
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Rank: Advanced Member
Groups: Member
Joined: 6/9/2010
Posts: 779
Location: Alessandria, Italy
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I forgot something. The steering axle can link by a liver system.  Pendle axle: it works on a ball bearing (pag 13) http://www.goldhofer.de/fileadmin/downloads/prospekte/2016-04_PP_Semi_Low_Loaders_STZ_en.pdf(over the barrel) .jpg) off topic: modular element 
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Rank: Advanced Member
Groups: Member
Joined: 6/27/2013
Posts: 937
Location: Quebec, Canada,
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Playing with toys since 1970, now building them.
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Rank: Advanced Member
Groups: Member
Joined: 6/27/2013
Posts: 937
Location: Quebec, Canada,
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You make me feel like going downstairs and have a look underneath my Nooteboom trailers. :d/
S.
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Playing with toys since 1970, now building them.
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