How to build a pump track!
Take 30m3 of clay based silt, 10m3 topsoil and 2 Dingos. Place the
basic shape of the track, shaping the berms 1st. This will enable you
to line up the rollers and plan how many 'pumps' you can fit in between
each berm. HINT! the longer the straights the better because you
eventually build enough speed to 'double' two rollers.
Place the rollers and compact all the soil well. Take special note in
the video footage where the rollers are on the exits of the berms. You
need to use the berm to gain speed up the roller and then pump down it
for the next straight to hold your momentum. It looks easy but it's
actually extremely tiring (and fun though). Make sure you cut the
berms quite steep - steeper than you logically think. Cut the berms to
suit. Ride and tweek so that you can ride around the whole track
without pedalling!
See more photos and videos here