
This is a Gif shot from 1990 the log is 20 inch 50 cm x 20 inch 50 cm
we made this hydralic firewood machine of old waste materials
it was the first of its kind with twin or tandem cylinders
normaly it is run with the lowest cylinder 5 t. 250 bar
3 sec. forvard 1 sec. return
with 2 cylinders it makes 10 t. and runs little slower
the 12 mm thin knife is made of Swedish hardex 400 steel and it has the strenght of 30 mm ordenary steel
the cylinders and pistons are all made of plast not stanless steel
and it is driven with ordenary water (water hydralics)
it has served us fore more than 20 years and is still going strong
and gess what the hydraul pump is ?