you also need some rods 8 mm steel to join al the gears
also 2 rods to join the stam for adjusting the gears aprox 60 mm eich
also you need 6 Rampa bolts, i included the file blade example so you can mabe lasercut a piece of toolsteel and sharpen it or print it to use it as a stancel if you have to cut it yourself. i trace it on a old circular table-saw-blade (very good steel) and did the holes with a plasma cutter.
they also work in the snow!