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Paired-spoke hub laced to standard-drilled rim?
I have a pair of very nice DT made hubs from a pair of Bontrager
paired spoke wheels that I'd like to relace into a pair of rims with standard drilling, wondering whether this is possible. The front hub and rear NDS spokes are all nailhead spokes, the rear DS spokes are j- bend into a flange. Anyone have any experience with this? |
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Paired-spoke hub laced to standard-drilled rim?
Dave wrote:
I have a pair of very nice DT made hubs from a pair of Bontrager paired spoke wheels that I'd like to relace into a pair of rims with standard drilling, wondering whether this is possible. *The front hub and rear NDS spokes are all nailhead spokes, the rear DS spokes are j- bend into a flange. Anyone have any experience with this? If you can determine the angle at which the hub holes diverge from normal, you can express this as a fractional crossing when you enter the data into Spocalc or another spoke calculator that allows fractional cross numbers. For instance, a 36 hole wheel has 18 holes per hub flange, spaced at 20 degree intervals. So in that case, 20 degrees equals one "cross". If some of the hub holes are 10 degrees out of phase, then you could specify 2.5-cross or 3.5-cross as applicable to calculate the spoke lengths for those holes. This is the technique I use to do skip-hole lacing that matches (for instance) a 36 hole hub to a 24 hole rim. http://www.rideyourbike.com/36hub24rim.shtml Chalo |
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Paired-spoke hub laced to standard-drilled rim?
On Sep 8, 11:16*am, Dave wrote:
I have a pair of very nice DT made hubs from a pair of Bontrager paired spoke wheels that I'd like to relace into a pair of rims with standard drilling, wondering whether this is possible. *The front hub and rear NDS spokes are all nailhead spokes, the rear DS spokes are j- bend into a flange. Anyone have any experience with this? Been there, well, kinda... did a 2:1 rear rim with a standard-spaced hub. Rim was evenly spaced but going 1:1 from 2:1 means the spoke line for a buncha the spokes was 'suboptimal' due to drilling for the other side of the hub. Your spoke line will prolly be less than stellar too. But you can 'correct' the spoke line by bending the spokes near the nipples. Both of these spoke configurations (mine and yours) are definitely suboptimal., even with correction. Don't have any longterm data on that - my buddy's been riding it for about two months as his rear training wheel and hasn't had a failure or truing required. Good luck with that. This sort of mucking about is not for the faint of heart - especially the rider of said wheels. D'ohBoy |
#4
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Paired-spoke hub laced to standard-drilled rim?
On Sep 8, 6:16*pm, Dave wrote:
I have a pair of very nice DT made hubs from a pair of Bontrager paired spoke wheels that I'd like to relace into a pair of rims with standard drilling, wondering whether this is possible. *The front hub and rear NDS spokes are all nailhead spokes, the rear DS spokes are j- bend into a flange. Anyone have any experience with this? I've done it. Paired-spoke hubs have spoke holes drilled directly opposite each other whereas standard hubs are drilled so that the hole on the one flange is directly between two holes on the other flange. This causes every second spoke to be too short. You'll need four different spoke lengths in two sets (left and right flange). Calculate the length for one set on each flange using the standard method. For the other set for each flange, add some length. Determine this additional length by adding one quarter of the distance between two spoke holes on a particular flange. In other words, you need an additional dimension which is the distance from spoke hole to spoke hole. Now you just have to figure out which way the hub will rotate for the crossings and configure it so that the longer spokes travel the longer distance. |
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