This is a Pride Gogo traveller.The ride was very hard, It turned out
that the buggy was fitted with seat suspension (the instructions said
'where fitted', but it was completely seized up. One tube was meant to
slide inside another but it was rigidly stuck. It took a big hammer to
free it. The grease had solidified into a waxy substance. I cleaned it
all up and adjusted the suspension to 'softest'. The spring appears to
be a valve spring out of a big diesel or something similar; a very very
strong compression spring. The suspension now works but it is still
quite hard.

Bill