Airspring dump

20 20 · Jun 9, 2010

Zick said:
YouTube - Double Spring Dump Trailer

He has more videos. Doesn't seem too bad.

I have to wonder what the true weight of that load was. The narrator said 5000+lbs, To me I would say under 4000lbs??????? Hard to tell without being there or seeing it on scales

schmism · Jun 9, 2010

LD1 said:
It sure was easy with an empty trailer.

It appears to be about 10" in diameter and @ 100psi of air that would give roughly 11,000lbs of force. But hydraulics are positive displacement. The fluid wont compress, which means hydraulics will raise just as fast under load as empty.

Look at the volume of air required to fill that bladder with 100psi. How long would it take your air compressor to fill a tank that size to 100psi??? I am guessing longer than if it were a hydraulic trailer. That trailer with 7k on it looks like it would raise pretty slow to me.

depends on your compressor. would be easy to slap the air chuck on the tank before i run to get gravel from the shop compressor. else a little portable compressor running off the aux circuit of the 7 way (running off the tow vehicle) running during transit.... if your trip time is 10 min and it takes 5 min to fill the thank, what do you care?

Some other obvious advantages. Low pressure 100psi air vs 3500psi hydraulics. Could be plumbed and parts acquired for a feild fix at any big box hardware store... no so for leaky/blown hydraulic lines.
No additional linkages or scissor mechanisms to wear out. no pins on the ends of the hydraulic rams to shear off (ask Eddie about that)
only need a compressed air source to run the bags. if the onboard compressor buns up you can always stop at a gas station and fill the tank. If the motor on your electric over hydraulic burns up... still no dumping the load without re plumbing to a separate hydraulic source.

as to speed. loaded version looked no slower than electric over hydraulic setup which can seem agonizingly slow especially at near capacity.