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Here I Go Again! Dump Trailer Time!


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#16 KennyP ONLINE  

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Posted September 15, 2011 - 12:16 PM

Brian, I went out and got a scissor jack. It has 15" of lift, But takes many revolutions to get there. Didn't count.

#17 Texas Deere and Horse OFFLINE  

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Posted September 15, 2011 - 12:32 PM

Kenny, the lift drawing you show looks good, but one small adjustment. when the unit is collapsed, the winch is at it's worst mechanical advantage. The "scissors" are going to straight line and it may not open. Wouldn't it be easier to put a small tower on the tongue and have it lift straight up? Or have the cable go up & over a pulley? If the winch doesn't have the "umph", you could double the cable runs, it'll move half as fast, but be twice as strong.



Alan, Won't the cable be lifting the front of the bed and opening the sissor lift? If you look at Kenny's Drawing I think it will work fine because the cable will be lifting the bed until the bed clears the top pulley.

#18 Chuck_050382 OFFLINE  

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Posted September 15, 2011 - 12:51 PM

Kenny, My idea isn't working out the way I thought it might now that I have a model made.

#19 ducky ONLINE  

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Posted September 15, 2011 - 12:55 PM

"Brian, I just threw out two old 12 volt Makitas. Batteries wouldn't hold a charge and the triggers quit functioning. Ducky sharn!"

Nice one KennyLOL

#20 KennyP ONLINE  

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Posted September 15, 2011 - 01:07 PM

Ok! Revision 1. See what ya'll think of this here design.

Dump Trailer2.jpg

I lowered the frame attachment for the lift by 4". This leaves the scissor open a smidge. I also connected the cable directly to the lower lift bar. When the winch strats reeling in cable, it helps pull the front of the dump bed up, thus making it dump. This gives me 39"+/- lift. Anything in the bed should slide out at 55 degrees.
ducky, thought you would enjoy that remark.
What say ye?

#21 Texas Deere and Horse OFFLINE  

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Posted September 15, 2011 - 01:08 PM

I think it will work the other way also. This looks good to me.

#22 ducky ONLINE  

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Posted September 15, 2011 - 01:17 PM

Ok! Revision 1. See what ya'll think of this here design.

[ATTACH=CONFIG]21128[/ATTACH]

I lowered the frame attachment for the lift by 4". This leaves the scissor open a smidge. I also connected the cable directly to the lower lift bar. When the winch strats reeling in cable, it helps pull the front of the dump bed up, thus making it dump. This gives me 39"+/- lift. Anything in the bed should slide out at 55 degrees.
ducky, thought you would enjoy that remark.
What say ye?


Hey Kenny, You have my permission to try it on the "Map". Anything to make grow Right.

#23 Chuck_050382 OFFLINE  

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Posted September 15, 2011 - 01:17 PM

looks good Kenny, I just suggest bracing the tower down to the tongue of the trailer.

#24 JD DANNELS OFFLINE  

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Posted September 15, 2011 - 01:31 PM

The winch would work for sure. There is a guy on another forum who is using one on a Murray to lift plow,disc etc on a modified Sears 3 point. Like you I don't care for the dump onn my cart, so will be watching this.

Also read of a guy using 2 electric actuators from Northern tool to run a dump body on a toyota tacoma with a scissor frame.125011_lg.jpg

#25 MacWorld OFFLINE  

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Posted September 15, 2011 - 01:42 PM

This layout or the other doesn't change much, the cable is still fully parallel with one of the scissors arms. At the beginning the lifting will be done by the cable with the front pulley only, as per the original plan. You will have to lower the pulley in front of the bed so that the cable is horizontally aligned with the scissors center pivot point.

#26 KennyP ONLINE  

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Posted September 15, 2011 - 01:45 PM

JD DANNELS, those would be nice, but can get expensive for my budget. I already have the winch, just need to source some scrap metal. Thanks.
And thanks to every one for their comments. That's a big help with this.

#27 KennyP ONLINE  

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Posted September 15, 2011 - 01:52 PM

MacWorld, I'm not doubting what you say, but if the cable is high at the pulley, won't it be helping the lower link lift and rotate? If it is lower at the pulley, the angle of pull would be more straight on from the link attachment 4" below the bed. Wish I had a program that would let me animate this.

#28 MH81 ONLINE  

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Posted September 15, 2011 - 03:46 PM

MacWorld, I'm not doubting what you say, but if the cable is high at the pulley, won't it be helping the lower link lift and rotate? If it is lower at the pulley, the angle of pull would be more straight on from the link attachment 4" below the bed. Wish I had a program that would let me animate this.


I think if you just drop the pulley on the front of the bed (4") so it's at the same hgt as the center pivot when collapsed, all will be well, you'll have the best of both pulls and a little less stress on the top pivot of the lift arm.

#29 Texas Deere and Horse OFFLINE  

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Posted September 15, 2011 - 03:58 PM

Alan, Won't the cable be lifting the front of the bed and opening the scissor lift? If you look at Kenny's Drawing I think it will work fine because the cable will be lifting the bed until the bed clears the top pulley.


If you look at Kenny's drawing, the cable will be against the front of the bed. By being against it, it will be lift the bed and opening the scissor lift at the same time, IMHO.

#30 JD DANNELS OFFLINE  

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Posted September 15, 2011 - 04:22 PM

That looks pretty good Kenny. If you already have the winch it makes sense to use it.
Had you thought about a pulley/roller to mount on the front of the bed till the angle gets such that the cable clears?
It would prevent the cable chaffing the bed or wearing the cable.
I have in my mind one of the rubber V rollers used on boat trailers.




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