Originally Posted by
Wogsterca
One wonders though with deeper rims, how do you reach the screw for the nipple, do they use extra long nipples, extra long screws or do the holes go through to the inner most layer, and if that is the case, doesn't the hole cost a lot of the strength?
I'm not sure about the B43, but in the case of other deep section rims there's 2 ways they go about it:
Option 1 is the old carbon deep section clincher type, where the spoke nipples are actually seated like they would be for a regular rim, and the carbon deep section is only drilled to allow passage of the spoke. So the spoke length is much longer than what you're seeing protruding from the rim.
Option 2 is for deep aluminum and newer, structurally more sound carbon rims, and the nipples are seated like a tradition rim, closest to the hub. This shortens the spoke length, and strengthens the wheel.