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General Fabrication Any Fab that does not fit into another Forum

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  #1  
Old 01-08-2017, 10:26 PM
Nutty4x4's Avatar
Nutty4x4 Nutty4x4 is offline
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Join Date: Dec 2011
Location: Vancouver Island
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Scissor lift

Hey guys/gals, going to do a dump box on one of my trucks after I finish my wheeler I swear! Anyhow I've looked at scissor lifts and what I want to know if that is really the best way to package a hydraulic dump system? Seems to me a huge strain on the pivots from how they push on the top bars and not at the pivot with the ram oriented differently for a heavy load. Am I overthinking this? As I see a lot of dump trailers manufactured this way, just don't want to waste material if there is a better way. End goal is to have a trap door in the dump box to have rails for a 5th wheel connected to the frame as you should. The gears in my head are turning and thought maybe someone here may know. Thanks!
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  #2  
Old 01-08-2017, 11:03 PM
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deaner deaner is offline
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Some drawings or pics would help.
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  #3  
Old 01-09-2017, 10:17 AM
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Nutty4x4 Nutty4x4 is offline
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Now isn't the way the ram is going to stress the pivots due to leverage applied with a load? and would you get more lift capacity pushing on the pivot where red arrow is?
If that leverage is nothing to worry about I will carry on just thought there would be a better way. Thanks!
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  #4  
Old 01-09-2017, 01:55 PM
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350 Vortec 350 Vortec is offline
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Why not just use a multistage ram?over here a scissors or linkage type tipper is really only used when tipping body needs to be kept as rigid as possible when tipped,site or offroad tippers mostly,otherwise for small ish bodies it's multistage underbody ram mounted upright ,seems a far simpler way to go for you ?
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  #5  
Old 01-09-2017, 02:00 PM
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350 Vortec 350 Vortec is offline
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http://m.ebay.co.uk/itm/tipping-ram-...257Ciid%253A19 Something like this
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  #6  
Old 01-09-2017, 07:26 PM
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Dqracer Dqracer is offline
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Location: Somerset KY.
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the load is split over 5 points, the ram cylinder base, the ram, the dump box hinge, the scissor pivot, and the scissor to box pivot , so its not as bad as imagined ..
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  #7  
Old 01-11-2017, 10:18 PM
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Properly built, they don't have problems with overloading the pivots.
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