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Kinlin XR-300 Powertap cross-3? Rim handedness?

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Kinlin XR-300 Powertap cross-3? Rim handedness?

Old 04-11-11, 08:08 PM
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Kinlin XR-300 Powertap cross-3? Rim handedness?

I just built a wheel with a Kinlin XR-300 and Powertap 32 hole hub laced cross-3 with 278mm/276mm 2.0/1.5mm DT Revolutions and 12mm DT alloy nipples. The nipples didn't quite pivot far enough fore and aft to produce straight spokes as in my box rim/conventional hub wheels so I corrected things as described in Jobst's comments on spoke line correction in _The Bicycle Wheel_. Has anyone had spoke failures in such an installation?

I have another one to build for which I've yet to order spokes and am wondering if I should lace it cross-2 instead to get a better angle at the rim (although cross-3 would be preferable since that produces the same spoke length for a cross-2 28 hole front hub I'm building into a matching front). Although my hub was laced cross-3 in a previous life, it came back from service at Saris with a new hub shell so I don't have existing indentations I'd like to match.

If I looked real close I could convince myself that the hub-side hole right of the valve stem was a hair lower (as opposed to noticeably offset that way as on an Open Pro) although both ends of the spoke holes appear centered and I couldn't find a difference in how spokes sat in the holes in both sides. Is this the case?
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Old 04-11-11, 10:26 PM
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IIRC, cycleops recommends 3x on both sides of the hub.

Originally Posted by Manual
Both sides of the PowerTap should be built using a 3x spoke lacing pattern. Because of the
design of the PowerTap, torque is transmitted through the hub to the non-drive side. For
additional questions please consult WHEEL BUILDING.
Straight from the hub manual.

We haven't had a single problem building 3x, with brass nipples and DT 2.0/1.8 competitions onto RR 1.2/585's which are 30mm deep. Same as your kinlins.
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Old 04-11-11, 11:38 PM
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Originally Posted by operator
IIRC, cycleops recommends 3x on both sides of the hub.
Current manuals read

IMPORTANT:
For your safety, the non-drive side of the PowerTap hub must be built with at least a 2x lacing
pattern. Because of the patented PowerTap design, torque is transferred through the hub to the
non-drive side. Failure to adhere to this precaution will void the warranty.

and recent Cycleops built Open Pro wheels are cross-2.

We haven't had a single problem building 3x, with brass nipples and DT 2.0/1.8 competitions onto RR 1.2/585's which are 30mm deep. Same as your kinlins.
Groovy!
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