Dump truck loses brakes while backing down ramp - GIF

Dump truck loses brakes while backing down ramp.

<video controls autoplay loop> <source src="https://s3-us-west-1.amazonaws.com/hmt-forum/dump_truck_backsdown_ramp_water_fr.mp4" type="video/mp4"> Your browser does not support the video tag. </video>

Previously:

https://www.homemadetools.net/forum/...293#post192269
https://www.homemadetools.net/forum/...646#post170525
https://www.homemadetools.net/forum/...852#post198476
https://www.homemadetools.net/forum/...395#post196636
https://www.homemadetools.net/forum/...584#post189695

Did not loose brakes....lost traction.

How? No air in the air brakes they lock up! Maybe hydraulic brakes?

Quote:

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Originally Posted by mwmkravchenko

How? No air in the air brakes they lock up! Maybe hydraulic brakes?

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A lot of time there are only spring lock brakes on 1 of the rear axles so loose the air and yes, the brakes lock up but nowhere near the amount of holding force of having functional brakes on all wheels.

Quote:

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Originally Posted by Frank S

A lot of time there are only spring lock brakes on 1 of the rear axles so loose the air and yes, the brakes lock up but nowhere near the amount of holding force of having functional brakes on all wheels.

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I learn a little more. Thanks Frank.

Can't tell from the video but it's possible that the wheels were all locked and the slope of the ramp and the condition of the surface were such that the truck just skidded into the water.

Likely too heavily loaded and no traction of the front wheels as well as making slowing and stopping on that incline difficult to impossible.