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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Walking Beam Suspension Question

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Old Bob

01-08-2004 04:40:55




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Now I know I am old. I was talking with a trucker about trucks and he mentioned a walking beam suspension on a Ford Dump Truck. For the life of me I cann't remembere what a walking beam suspension is. Remember all kinds of dump truck rear axle suspensions but not a walking beam. Some one refresh my memory as to what a walking beam suspension is. Isn't that something work construction all one life and cann't remember what a rear truck suspension is. Remember what I was doing when JFK was shot but cann't rember what a truck rear suspension is like. Your help appreciated. Old Bob

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bob

01-08-2004 19:11:34




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 Re: Walking Beam Suspension Question in reply to Old Bob, 01-08-2004 04:40:55  
A walking beam was used on old-time oil well pumping rigs. This beam traveled up & down to pump the oil out of the well.



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Joel Harman

01-08-2004 10:16:30




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 Re: Walking Beam Suspension Question in reply to Old Bob, 01-08-2004 04:40:55  
Think of a see-saw from a playground.



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old

01-08-2004 06:54:11




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 Re: Walking Beam Suspension Question in reply to Old Bob, 01-08-2004 04:40:55  
If I remember right its also calll a henrickson



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Deas Plant

01-08-2004 12:24:00




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 Re: Re: Walking Beam Suspension Question in reply to old, 01-08-2004 06:54:11  
Hi, Old Bob. I don't know if the Hendrickson comapny were the originators of the term or not but they have been the most prolific manufacturer of this type of suspension over the years, at least from what I have seen. Basically, it is two very short heavy springs attached to the chassis with pivots under them that carry a balance bar each side to which the front and rear axles of a tandem axle system are attached. Quite robust, gave little trouble if used to carry rated loads - until they tried making the beams from aluminium alloy - but not the smoothest suspension you've ever ridden on. They also had some rubber bushes that occasionally needed replacing - NOT a job for your average backyard tnkerer. Hope this helps. You have a wonderful day. Best wishes. Deas Plant.

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Old Bob

01-08-2004 20:12:33




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 Re: Re: Re: Walking Beam Suspension Question in reply to Deas Plant, 01-08-2004 12:24:00  
Thank you Deas Plant for taking the time to communicate, It is greatly appreciated. From where I'm from that's called a Hendrickson suspension. I talked to some one today and we agreeded that the suspendion system I wrote about is the Hendrickson but with out springs, it's mounted on rubber bushing. This rubber bushings instead of springs is what the guy was calling a walking beam.



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case poor in pa

01-10-2004 15:27:22




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 Re: Re: Re: Re: Walking Beam Suspension Question in reply to Old Bob, 01-08-2004 20:12:33  
shoulda left them beams on the oil rigs. proably where mack got the camel back idea



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Glenn Ayers

01-09-2004 14:26:18




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 Re: Re: Re: Re: Walking Beam Suspension Question in reply to Old Bob, 01-08-2004 20:12:33  
Bob , They're both *Walking Beam Suspension*. One's a *Sprung Walking Beam*(Hendrickson) ... the other is a *Rubber Block Walking Beam*(Hendrickson) The Rubber Block Hendrickson will knock your teeth loose.



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Dave Grubb

01-09-2004 16:21:55




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 Re: Re: Re: Re: Re: Walking Beam Suspension Questi in reply to Glenn Ayers, 01-09-2004 14:26:18  
There was another rubber system that was similar to a walking beam called "velvet ride" that was used by White and Autocar in the 60's. It used a rubber in shear donut in the center and the beams were connected to that. I also had a very heavy load rated goose neck many years ago that had a walking beam suspension that had no springs--only a fixed center pivot. It kept the deck height very low and as I recall was rated at 100,000 lbs. The only down side was it rode a tad hard. I hit a RR crossing one time a little too fast with a rubber tired loader pulled down pretty tight on the chains. I happened to be looking in the mirror when the trailer axles crossed the the track. The tires on the loader compressed and when they rebounded the tie down chains literally exploded!!!

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