what wheel base for a dump bed...?
Cargo Master
Joined: Dec 2015
Posts: 2,544
Likes: 322
From: Harned, Ky
Wheel base varies according the bed length but basic rule of thumb is a dump bed needs to set 4-6” behind the cab with 60 percent of the beds length being in front of the rear axles center line
So with a 10 ft dump box you would need a minimum of 76” or 6 ft 4 in from the back of the cab to the center of the rear axle
Measure from the back of the cab to the center of the rear axle and post that info here
So with a 10 ft dump box you would need a minimum of 76” or 6 ft 4 in from the back of the cab to the center of the rear axle
Measure from the back of the cab to the center of the rear axle and post that info here
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5th Wheeling
Joined: Nov 2024
Posts: 49
Likes: 3
What a sensible rule of thumb. Thank you.
Here's more info: Taking into account a 6" offset from cab, there is approximately 95.5 +/- .5" of chassis in front of rear wheels, with the remainder of 62 (excessive?) inches behind the rear wheels.
If I were going to do this I think there could be some rear bit sacrificed in a cut off...but I am just guessing....
Current GVW rating is for 27,500 lbs.
Landon
Here's more info: Taking into account a 6" offset from cab, there is approximately 95.5 +/- .5" of chassis in front of rear wheels, with the remainder of 62 (excessive?) inches behind the rear wheels.
If I were going to do this I think there could be some rear bit sacrificed in a cut off...but I am just guessing....
Current GVW rating is for 27,500 lbs.
Landon
Cargo Master
Joined: Dec 2015
Posts: 2,544
Likes: 322
From: Harned, Ky
With 8 ft of workable space in front of the axle your truck will handle a 14 ft bed like a dump flat with sides or a grain dump, but it won’t handle a 14 ft dump truck bed
We run 14 ft dump truck beds on tandem axle trucks hauling 15-20 tons of rock in the bed
The dump hinge pin needs to be just behind the rear springs so 4-6 inches of frame behind the rear spring hangers is all you need, to much over hang is hard on the frame and can cause the front steers to lift off the ground while dumping
My F800 probably has a similar length as I have a 14 ft bed with the hinge pin behind the spring hangers and a couple ft of bed past the hinge
We run 14 ft dump truck beds on tandem axle trucks hauling 15-20 tons of rock in the bed
The dump hinge pin needs to be just behind the rear springs so 4-6 inches of frame behind the rear spring hangers is all you need, to much over hang is hard on the frame and can cause the front steers to lift off the ground while dumping
My F800 probably has a similar length as I have a 14 ft bed with the hinge pin behind the spring hangers and a couple ft of bed past the hinge
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5th Wheeling
Joined: Nov 2024
Posts: 49
Likes: 3
Again, thank you.
I don't know if it is manufactured or not but if I fell over an available 12' dump box I'd be valid in looking at it, no?
https://www.vanderhaags.com/detailvi...0aAntyEALw_wcB
https://www.vanderhaags.com/detailvi...YaAqxNEALw_wcB
Landon
I don't know if it is manufactured or not but if I fell over an available 12' dump box I'd be valid in looking at it, no?
https://www.vanderhaags.com/detailvi...0aAntyEALw_wcB
https://www.vanderhaags.com/detailvi...YaAqxNEALw_wcB
Landon
Cargo Master
Joined: Dec 2015
Posts: 2,544
Likes: 322
From: Harned, Ky
Something like those low side contractors beds would probably be ok, even higher sides are ok providing the bed itself doesn’t get to heavy and one doesn’t overload the truck just because there’s room in the bed
I’m use to beds with 4-5 ft sides built heavy enough to handle good size loads, these beds can weigh a ton or more by themselves thus reducing the amount of product one can load in that bed
With a 14 ft long x 4 ft high side grain style bed I can haul 300 bushel of grain or a full load of poultry litter fertilizer, but at the rock quarry I tell them to load no more than 10 ton of rock in the bed which looks like a small pile in a bed that size, if I had a heavy duty rock bed I would probably be overweight with 8 1/2-9 tons because those beds are so heavy
Hope this explains it some without being to confusing
Is the truck equipped with a pto to operate a dump or will that have to be added as well
I’m use to beds with 4-5 ft sides built heavy enough to handle good size loads, these beds can weigh a ton or more by themselves thus reducing the amount of product one can load in that bed
With a 14 ft long x 4 ft high side grain style bed I can haul 300 bushel of grain or a full load of poultry litter fertilizer, but at the rock quarry I tell them to load no more than 10 ton of rock in the bed which looks like a small pile in a bed that size, if I had a heavy duty rock bed I would probably be overweight with 8 1/2-9 tons because those beds are so heavy
Hope this explains it some without being to confusing
Is the truck equipped with a pto to operate a dump or will that have to be added as well
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5th Wheeling
Joined: Nov 2024
Posts: 49
Likes: 3
Something like those low side contractors beds would probably be ok, even higher sides are ok providing the bed itself doesn’t get to heavy and one doesn’t overload the truck just because there’s room in the bed
I’m use to beds with 4-5 ft sides built heavy enough to handle good size loads, these beds can weigh a ton or more by themselves thus reducing the amount of product one can load in that bed
With a 14 ft long x 4 ft high side grain style bed I can haul 300 bushel of grain or a full load of poultry litter fertilizer, but at the rock quarry I tell them to load no more than 10 ton of rock in the bed which looks like a small pile in a bed that size, if I had a heavy duty rock bed I would probably be overweight with 8 1/2-9 tons because those beds are so heavy
Hope this explains it some without being to confusing
Is the truck equipped with a pto to operate a dump or will that have to be added as well
I’m use to beds with 4-5 ft sides built heavy enough to handle good size loads, these beds can weigh a ton or more by themselves thus reducing the amount of product one can load in that bed
With a 14 ft long x 4 ft high side grain style bed I can haul 300 bushel of grain or a full load of poultry litter fertilizer, but at the rock quarry I tell them to load no more than 10 ton of rock in the bed which looks like a small pile in a bed that size, if I had a heavy duty rock bed I would probably be overweight with 8 1/2-9 tons because those beds are so heavy
Hope this explains it some without being to confusing
Is the truck equipped with a pto to operate a dump or will that have to be added as well
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Tuned
Joined: Oct 2013
Posts: 293
Likes: 119
Something like those low side contractors beds would probably be ok, even higher sides are ok providing the bed itself doesn’t get to heavy and one doesn’t overload the truck just because there’s room in the bed
I’m use to beds with 4-5 ft sides built heavy enough to handle good size loads, these beds can weigh a ton or more by themselves thus reducing the amount of product one can load in that bed
With a 14 ft long x 4 ft high side grain style bed I can haul 300 bushel of grain or a full load of poultry litter fertilizer, but at the rock quarry I tell them to load no more than 10 ton of rock in the bed which looks like a small pile in a bed that size, if I had a heavy duty rock bed I would probably be overweight with 8 1/2-9 tons because those beds are so heavy
Hope this explains it some without being to confusing
Is the truck equipped with a pto to operate a dump or will that have to be added as well
I’m use to beds with 4-5 ft sides built heavy enough to handle good size loads, these beds can weigh a ton or more by themselves thus reducing the amount of product one can load in that bed
With a 14 ft long x 4 ft high side grain style bed I can haul 300 bushel of grain or a full load of poultry litter fertilizer, but at the rock quarry I tell them to load no more than 10 ton of rock in the bed which looks like a small pile in a bed that size, if I had a heavy duty rock bed I would probably be overweight with 8 1/2-9 tons because those beds are so heavy
Hope this explains it some without being to confusing
Is the truck equipped with a pto to operate a dump or will that have to be added as well
Hydraulics can be added either as a conventional transmission-driven PTO pump or there are also DC motor pumps similar to what you'd see on a dump trailer. Many of the newer trucks with smaller dump beds use the electric pumps rather than a PTO.
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Tuned
Joined: Oct 2013
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I'm surprised to hear that number, 3k lbs for a mere grain bed. I've a 16' w/steel 48" sides and a plywood deck, and figured it closer to 2300 lbs w/the hoist hydraulics and large single cylinder, but I'll have to re-think that.
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