Originally Posted by
Mr IGH
Let me help you understand. First, remember that the same extrusion is used for a 20 hole rim as a 32 hole rim. Same thickness, same weight except for the difference in hole count (this is a fact) . Now think about a spoke hole with a nipple/spoke under tension with stress on the hole. Next think about a spoke hole without any nipple/spoke so that there's no stress on the hole. OK, now here comes the real hard part: Which one is under more stress; the hole with a tensioned nipple/spoke or the empty hole? Read up and understand the principal of "engineering superposition" before you try to answer or your just going to give the same mis-informed reply and continue to be just flat out wrong.
I'm still running with scissors!!!!!
"It's a fact" that SOME rims like the DT460 come in drillings from 20 through 32. It is also a fact that a DT 460 does not come in 16 hole drilling, and it is a fact that if you skipped holes in a 32 hole rim the span between spokes at a skip is the same as the span between a 16 hole rim. If the DT 460 was strong enough for spans large enough for 16 hole lacings, it would come in 16 hole versions.
That isn't engineering, but basic arithmetic. You're treating a minimum of 20 hole rim as a 16 hole rim. Do you understand that?
20 hole rims have the holes 98mm apart, 32 have the holes 61mm apart, and you have gaps that are 122mm apart, which is an extra 24mm more than DT ever drills this rim (122-98).
As for the stresses, rims need to be able to resist spoke tension, road compression and lateral forces. What you did might work in certain directions, but you have induced an outward force in the rim on those sections because there is no tension on the missing spoke spots, and you have made that area susceptible to lateral loads.
I don't know if you are being so caustic because you are defensive about the wheel you spent time building, or if you never thought about the unsupported spans you get skipping spoke holes and forgot that skipped hole makes the span double that of a base drilling. Or maybe you just are an angry person. But if I had a an I-beam that was strong enough to span a gap 98m wide, I wouldn't use it to span 122 meters. That's what you did with your wheel build.