Re: [RBW] Help With Wheelbuilding: DA 7700 Hub lacing

[Peter White]

I've built many wheels with these hubs. I used one for the rear wheel of my Rambouillet way back in the precambrian epoch. I much prefer the tight fit of the spokes on those hubs to the sloppy fit on most hubs these days. When the spokes are tensioned, they conform to the shape of the hub flange, and then there's no further movement of the spokes at the flange. No movement means no work hardening of the steel, and no breakage as the spoke becomes brittle from that hardening.

I don't know why Shimano made the right flange wider than the left, but it's certainly nothing to worry about. The difference is about .2mm. These hubs have been around since the mid 1990's. Mine is still going strong.

On Fri, Apr 18, 2025 at 9:15 PM Oliver Moss <oliverda...@gmail.com> wrote:

Hello All,

I'm attempting to lace a Dura-Ace 7700 rear hub (FH-700) with DT Competition spokes. The spokes will pass through the spoke holes and the bend will make it through and the head will seat on the non drive side, but it seems like the flange on the drive side is thicker and the bend gets stuck. It almost seems like the spoke holes on the hub need to be countersunk just a tiny bit more for the spokes to make it around the bend.

Does anyone have experience lacing these 7700 hubs and know what might be going on? Or what to do? I sort of doubt that these are designed for 1.8 spokes [I]just[/I] on the drives side, that doesn't make sense, but what do I know?

I know there are some super skilled folks on here, so please let me know what y'all think, and thanks for your time.

~Oliver

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Peter White

[Peter Bridge]

On Saturday, April 19, 2025 at 10:10:57 AM UTC-7 Peter White wrote:

I don't know why Shimano made the right flange wider than the left, but it's certainly nothing to worry about. The difference is about .2mm. These hubs have been around since the mid 1990's. Mine is still going strong.

I've never seen a flange failure on a Dura Ace hub. It's possible I've never seen a flange failure on a Shimano hub. I've seen a good few on other brands. I wonder if something triggered an alarm bell for Shimano, and they thickened the drive side to accommodate spoke tension. Maybe Wayne Stetina (I refer to him because he represented Shimano way back when) told them about Campagnolo failures. 

~pb