Had my local shop run the calculations for a new hoop and cut spokes to spec for me to rebuild my Chris King rear wheel. 32h MTB disc 135mm rear hub. Lacing 3 cross and the spokes that are pulled from inside the flanges are too long by a few mm and the ones on the outer pull are pretty spot on. When I try to push to 4 cross on the inner pull they are definitely too short to connect. I unlaced and moved the inner/outer pull one hole over for the non-drive side and that did not change anything, as the long spokes are from both sides of hub, just inner/outer of the flange. I am dang sure my 3 cross is correct, but I am running out of reasons it is not working.
Hope this makes sense….
by bikehikepunk
4 Comments
First of all, are the spokes from each side different in length?
Second: generally spoke length isn’t _that_ different unless it’s an asymmetrical hub, which as far as I remember isn’t the case with Chris King, their hubs are all symmetrical (PCD is the same on both sides). So, switching spokes from one side to the other will not change the results significantly since the difference comes mainly from the dish of the wheel.
Personally, I would just cut a few mm of the spokes that are too long, or take it back to the LBS, since they did the math for the spoke length, and ask them to correct it. Since I don’t have too much patience I would just cut them off
What spoke length(s) did they come up with? It doesn’t make sense to chase lacing errors until it’s confirmed that the spokes are the right length.
Yes, drive side was 290mm brake side 292mm.
It looks like a lacing error to me. If you built the wheel by dropping the first set of drive side spokes in, those look good. The second set (first set dropped into the non-drive side) are off by one hole, leading to the long/short pattern you’re seeing. Basically, if your key spoke is one left to the valve, the spoke from the non drive side which would sit to the left of that needs to be dropped into the hole on the non drive side that’s slightly offset to the left of the key spoke hole in the flange. It’s a subtle error that took me a while to spot when looking at your pictures.