02-18-2015, 08:50 PM
The nut simply rotates in the bore, once the preload is set the pins stop it from turning and changing the preload. The shoulder on the nut holds it from moving in. The holes are spaced so that when one of the pins are engaged the other one is half a tooth out from engaging, giving you twice as many settings as there are cogs in the nut.
Free advice is worth exactly what you payed for it.
Greg
Greg