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svenhöek
Lukas
I'm building a triplet-laced rear wheel, and I'm having difficulty calculating the correct spoke lengths. The hub is a Tune Mag150 (55.5mm PCD DS, 17mm flange offset DS) with 16 holes on the DS, and the rim is an AForce Al33 with an ERD of 576mm, which I've checked. I calculated the DS spoke lengths by treating it as a 32h 2x wheel, which gave a figure of 267.4mm which I rounded down to 266mm. However, 266mm spokes are definitely too short.
I assume that this is because although there are 16 holes on the DS hub flange, there aren't 32 holes on the rim but only 24. However, I can't find any way so far to calculate what the spoke lengths should be in that situation. Or rather, I've found lots of conflicting ways of doing it using various decimal crossing values but none of them are consistent and the reasoning behind them is either scant or non-existent.
Any tips on calculating the proper spoke lengths on a 16:8 triplet wheel? It also occurs to me that it might be better, given that the DS is effectively one half of a 32h wheel, to use 3x rather than 2x on the DS.