Re: The wheelbuilding thread
Posted: Sat Mar 02, 2013 11:23 pm
Hey WinterRider, for the NDS spoke lacing for a 16:12 arrangement, lets keep it simple ... 3xDS and 3xNDS but with the 3xNDS leave out every 4th spoke
I believe that leaving out every 4th NDS spoke should mean that the NDS spokes should all be the same length and about the same spoke tension
According to the calculations it will be interesting to see what NDS ratio we get when using a Shimano 7900 32H hub, 130mm OLD, 28H rim
For a 3xDS 3xNDS 16:12 spoking ... according to the calculations we should get about ...
- NDS Tension = (120 * 0.53) * (16/12) = 84.8kgf
- Total Bracing angle = 3.8 + 7.2 = 11.0 degrees (good torque control, good wheel lateral stiffness)
For a 3xDS 2xNDS 16:12 spoking ... an alternative ...
- NDS Tension should be about 90kgf ... something like (120 * 0.59) * (16/12) >= 94.8kgf
- Total Bracing angle = 3.9 + 7.4 = 11.3 degrees (good torque control, good wheel lateral stiffness)
I believe that leaving out every 4th NDS spoke should mean that the NDS spokes should all be the same length and about the same spoke tension
According to the calculations it will be interesting to see what NDS ratio we get when using a Shimano 7900 32H hub, 130mm OLD, 28H rim
For a 3xDS 3xNDS 16:12 spoking ... according to the calculations we should get about ...
- NDS Tension = (120 * 0.53) * (16/12) = 84.8kgf
- Total Bracing angle = 3.8 + 7.2 = 11.0 degrees (good torque control, good wheel lateral stiffness)
For a 3xDS 2xNDS 16:12 spoking ... an alternative ...
- NDS Tension should be about 90kgf ... something like (120 * 0.59) * (16/12) >= 94.8kgf
- Total Bracing angle = 3.9 + 7.4 = 11.3 degrees (good torque control, good wheel lateral stiffness)