Warsop Benjo rammer.

[weidner]

While on the subject of free piston devices , there used to be free piston pile drivers , which I fancy used a diesel cycle . What puzzled me about these was that they had a very metallic clang to them . Was this from the contact with the steel pile , or was there a metal stop within the device itself ?

[Roger]

[the highwayman]

Originally Posted by weidner

While on the subject of free piston devices , there used to be free piston pile drivers , which I fancy used a diesel cycle . What puzzled me about these was that they had a very metallic clang to them . Was this from the contact with the steel pile , or was there a metal stop within the device itself ?

That sounds like a Marion, didn't have much to do with them, except watching, I've got it in mind that there was a stop inside them, but the piston could protrude past, to contact the pile cap, SPC tried one inside a cabinet, but I seem to think that it did away with the only advantage that they had, in that they could be used in 'Small' spaces. Last time I saw one in use must have been nearly 20 years back, somewhere around Islington way.