Originally Posted by phantomcow2
it should be from the bend in the elbow to the end of the threads. So wait your trying to offset the rim 2 inches? Then why need 18 different lengths?
Thanks for the information!
Perhaps to clarify, the hub is being made closer to the rim on one side, as opposed to making it highly 'dished'. This will give the wheel a serious vertical 'wobble' as you ride, which is part of the propulsion system.
So, when you are building the wheel, the key spoke will be your shortest spoke, and the spokes will get longer and longer as you work your way around to the spoke opposite the key spoke, and then shorter again as you work your way back up the wheel. So theoretically you'll need about 18 different lengths, and two of each. In reality, the way the numbers round to the nearest mm, there are usually 3 or 4 of each length, but its still a lot of different lengths.
Thanks,
Sam