30 & 40 come to mind. Think it had to do with the bend of the tube. 30° or 40°. The formula as printed, states 30, but may need to be 40, depending on the bend of the tube.
All this by m e m o r y, as good as that is(???) Hopefully someone can confirm, or ???
(Don't use a motor myself, I mounted a Ku to the BUD, but I read a lot of posts)
The worst case try 30 in the formula, and if that don't work out, recalculate with 40 and try again.
One night I walked home very late and fell asleep in somebody's satellite dish.My dreams were showing up on TV's all over the world. -- Steven Wright
Openbox S9, Pansat 3500SD, 139w to 55.5W +30W
10Ft USS Steel BUD and an assortment of ChannelMaster dishes, (1)84e, (2).7m, (2)1.2m,(1)1.0M, (1)2.4m[8ft] offset in storage.