(...) and I have over 100 pistons (large plus small) from bricklink. I also recommend the 8455 Technic Backhoe. It has new form factor pistons which make it a bit more challenging to hook two pistons together back to back, but challenges are fun! I (...) (21 years ago, 16-Mar-04, to lugnet.robotics.rcx.nqc, lugnet.robotics.rcx.legos)