New Trailer

[Forever Fendt]

Thinking of getting a new trailer 16 ton ,What are the pros and cons of single ram against twin tipping rams

 

[ollie989898]

I've used both kinds of trailer. I cannot honestly tell you that there was any difference but logically a shorter fatter ram would generate more force, have half the moving parts/pipes and probably requires less oil to extend it?

Thinking about it twin ram trailers have rams which extend to a longer length which would explain why their geometry was different to a single ram.

 

[Andrew]

The fans of twin rams will tell you they twist less. However I've never seen a twin ram trailer with a flow divider, just a T piece, so I don't understand this as the oil will take the path of least resistance.
The fans of single rams will say they use less oil and less pressure.
I don't think it really matters, as long as the design is there and the geometry is correct for whichever system is used, which I'm sure you know.

Personally I've never seen a lorry with two tip cylinders, only the big off road Volvo style dumpers which have two big ones pushing outwards.

 

[quattro]

Two rams facing forward makes them easier to tip

 

[Grim Reaper]

I like this so much I bought another today

 

[Hjwise]

It’s an interesting question. I think Larrington say one ram is the only sensible option, yet most manufacturers use two. I’d have thought one big ram would have been cheaper to produce than two slightly smaller ones. I’m not convinced that less oil goes with less pressure - I would have thought it’s just the opposite. More oil suggests a bigger area that the oil is pushing against, so lower pressure.

 

[Matt L]

Single ram can cause bending to the chassis or the buck if overloaded due to more pushing force and a bigger leaver.
The third stage of the ram is still lifting full load on a single ram so needs to be large enough diameter to cope with the strain, this leads to larger lower sections which is how the damage in overloading is caused.
Single and twin will use the same volume of oil, again due to the size of the first few stages on the single ram.