I built a front wheel using a Kinrin (キンリン) XR31T rim that a customer entrusted to me.
HB-CX75 28H, all CX-RAY spokes, reverse Italian lacing pattern.
Building a disc hub front wheel with reverse Italian lacing is
indeed Shimano's specification (→here),
but some complete wheel manufacturers use straight-gauge spokes,
which is effectively equivalent to JIS lacing pattern.
My choice to use butted spokes with reverse Italian lacing comes from my own philosophy,
and it just happened to align with Shimano's specification.
↑The red line on the rim in its packaged state appears to indicate the "cancellation" mark.
The XR31T rim has a brake zone,
and the XR31TS is the version without brake zone finishing,
but this rim has XR31TS specifications while the label reads XR31T.
I titled this post as XR31T though.
↑H1ST on the naturally higher side
↑H1ST on the naturally lower side
This is a practical example of what I wrote about the other day—
when building an offset rim disc hub front wheel,
I oriented the rim holes opposite to how they're oriented on the rear wheel.
Both left and right spokes are CX-RAY, and since they're the same spoke,
comparison using first-order spoke tension is possible.
From actual H1ST measurements, the maximum value on the naturally lower side exceeds the minimum value on the naturally higher side,
and the left and right spoke tensions are so close you could say they're nearly equal
(if this were using semi-comp or other different-sized lacing,
comparison using H1ST would be meaningless).
With rear hub-level runout, as long as both sides use the same number of spokes,
combining different-sized/different-count left-right lacing with an offset rim
will never result in "nearly equal spoke tension on both sides,"
but with disc front hub-level runout, it's sometimes possible.
Given this fact and my reasons for tying/connecting spokes, this front wheel doesn't need them.
Or rather, either both sides should have them or neither.
For a normal front wheel this would be obvious, but
without looking at the wheel, if you squeeze one of the final cross sections,
you can't tell which side it is
(strictly speaking it's a bit different, but H1ST is the numerical expression of that squeeze).
The reason I didn't build the rear wheel (or couldn't) is that I'm out of rear hub stock.
HB-CX75 28H, all CX-RAY spokes, reverse Italian lacing pattern.
Building a disc hub front wheel with reverse Italian lacing is
indeed Shimano's specification (→here),
but some complete wheel manufacturers use straight-gauge spokes,
which is effectively equivalent to JIS lacing pattern.
My choice to use butted spokes with reverse Italian lacing comes from my own philosophy,
and it just happened to align with Shimano's specification.
↑The red line on the rim in its packaged state appears to indicate the "cancellation" mark.
The XR31T rim has a brake zone,
and the XR31TS is the version without brake zone finishing,
but this rim has XR31TS specifications while the label reads XR31T.
I titled this post as XR31T though.
↑H1ST on the naturally higher side
↑H1ST on the naturally lower side
This is a practical example of what I wrote about the other day—
when building an offset rim disc hub front wheel,
I oriented the rim holes opposite to how they're oriented on the rear wheel.
Both left and right spokes are CX-RAY, and since they're the same spoke,
comparison using first-order spoke tension is possible.
From actual H1ST measurements, the maximum value on the naturally lower side exceeds the minimum value on the naturally higher side,
and the left and right spoke tensions are so close you could say they're nearly equal
(if this were using semi-comp or other different-sized lacing,
comparison using H1ST would be meaningless).
With rear hub-level runout, as long as both sides use the same number of spokes,
combining different-sized/different-count left-right lacing with an offset rim
will never result in "nearly equal spoke tension on both sides,"
but with disc front hub-level runout, it's sometimes possible.
Given this fact and my reasons for tying/connecting spokes, this front wheel doesn't need them.
Or rather, either both sides should have them or neither.
For a normal front wheel this would be obvious, but
without looking at the wheel, if you squeeze one of the final cross sections,
you can't tell which side it is
(strictly speaking it's a bit different, but H1ST is the numerical expression of that squeeze).
The reason I didn't build the rear wheel (or couldn't) is that I'm out of rear hub stock.