DT Swiss Competition Spoke Tension
09-10-20, 08:38 AM
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DT Swiss Competition Spoke Tension
I'm building a set of wheels for my Miyata 912 using Sun M13 ll (700C) rims, small flange hubs and DT Swiss Competition 2.0/1.8/2.0 spokes @ 3X.
What would be acceptable spoke tensions for the drive side and non-drive side spokes? I'm using an old Wheelsmith Spoke Tensiometer.
What would be acceptable spoke tensions for the drive side and non-drive side spokes? I'm using an old Wheelsmith Spoke Tensiometer.
09-10-20, 09:04 AM
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Spoke tension is generally limited by the rim. I'd shoot for 100kg on the drive side. The non drive will be whatever it takes to have the rim centered and the proper tension on the drive side. You don't measure tension on the nds when building wheels. I'm not sure what this equates to on the WS tension meter, I've never used one.
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09-10-20, 09:19 AM
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Spoke tension is generally limited by the rim. I'd shoot for 100kg on the drive side. The non drive will be whatever it takes to have the rim centered and the proper tension on the drive side. You don't measure tension on the nds when building wheels. I'm not sure what this equates to on the WS tension meter, I've never used one.
09-10-20, 09:24 AM
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Spoke tension is generally limited by the rim. I'd shoot for 100kg on the drive side. The non drive will be whatever it takes to have the rim centered and the proper tension on the drive side. You don't measure tension on the nds when building wheels. I'm not sure what this equates to on the WS tension meter, I've never used one.
I do check NDS at the end of the build, though. I go around the wheel and see what the range is; it's often below the scale (Park tensiometer) to perhaps 70 kgf. I'll get the low spokes up as close to the high ones without disturbing the true too much. If the high spokes are at 70-75 kgf, I can usually get the low spokes up to at least 60 kgf before the wheel starts to move. Those low tension spokes are the ones that are going to experience cyclic stress going to 0 and back up, fatigue, and fracture if I don't equalize tension as much as possible.
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09-10-20, 09:34 AM
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Agree with most of this; I normally aim for 105-115 kgf, but the spokes will handle a lot more tension than the rim.
I do check NDS at the end of the build, though. I go around the wheel and see what the range is; it's often below the scale (Park tensiometer) to perhaps 70 kgf. I'll get the low spokes up as close to the high ones without disturbing the true too much. If the high spokes are at 70-75 kgf, I can usually get the low spokes up to at least 60 kgf before the wheel starts to move. Those low tension spokes are the ones that are going to experience cyclic stress going to 0 and back up, fatigue, and fracture if I don't equalize tension as much as possible.
I do check NDS at the end of the build, though. I go around the wheel and see what the range is; it's often below the scale (Park tensiometer) to perhaps 70 kgf. I'll get the low spokes up as close to the high ones without disturbing the true too much. If the high spokes are at 70-75 kgf, I can usually get the low spokes up to at least 60 kgf before the wheel starts to move. Those low tension spokes are the ones that are going to experience cyclic stress going to 0 and back up, fatigue, and fracture if I don't equalize tension as much as possible.
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09-10-20, 10:58 AM
#6
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I built my rear @110 kgf DS.
NDS is listed @ 71% per SpoCalc.
135mm Shimano hub
NDS is listed @ 71% per SpoCalc.
135mm Shimano hub
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09-10-20, 11:22 AM
#7
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I try for at least 100Kg on the drive side on 32 and 36 spoke wheels. The NDS is the tension that keeps the rim centered.
The only time I have had problems with that is with a Power tap hub that had too much offset. It required about 120Kg DS to bring the NDS up to an acceptable level.
The only time I have had problems with that is with a Power tap hub that had too much offset. It required about 120Kg DS to bring the NDS up to an acceptable level.
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09-10-20, 11:49 AM
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Right...that's what you'd end up with if the DS was at 110...but you wouldn't put the tension meter on the NDS and try to get 78kgf. It's what they end up at with DS at the recommended tension.
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09-11-20, 05:09 AM
#9
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In reality, I only got about 70kgf, not the calculated 78kgf.
Last edited by Bill Kapaun; 09-11-20 at 05:12 AM.
