Sidewinder
ø18mm spur gear GS1831 /32/33/34/35/36 require CH67/CH68/CH69 motor mount and brass ø6,5mm pinions PS10 /11/12/13 or Ergal pinions PI6510e 6511e/6513e
ø19mm spur gear GS1934 /36/38 require CH65/CH67/CH68/CH69 motor mount and ø6mm pinions PI6011o /6012o