Another day, another wheel (and so on).
A customer brought in a
16-inch WO aluminum rim wheel for a Brompton for me to work on.
The front hub is a Shutter Precision dynamo hub,
but since it's for a Brompton, the over-locknut dimension
isn't the standard 100mm—it's 74mm instead.
There's a cable terminal on the right side of the hub,
so the right flange is narrower, making it an offset hub (with dish).
This does result in unequal spoke tension between left and right,
but it's far better than a no-dish hub designed for the narrower side.
Single-threaded fixed-gear hubs have dish for the same reason.
Basically, maintaining adequate flange width is more important
for lateral stiffness than having perfectly equal spoke tension.
Built it up.
The rim is the same as the rear wheel from before, but with straight-pull holes.
I built it 20H with black Leader non-butted spokes in radial lacing.
Before the rebuild it had CN spokes, 14-gauge plain, so while they're the same gauge,
I didn't reuse them. Since the new rim is taller,
the spokes would need to be shorter than before.
Plain spokes can be cut to any length, so reusing them wasn't impossible,
but since these aren't DT or Sapim spokes
and the spokes themselves are also on loan from the customer,
I used new ones.
A customer brought in a
16-inch WO aluminum rim wheel for a Brompton for me to work on.
The front hub is a Shutter Precision dynamo hub,
but since it's for a Brompton, the over-locknut dimension
isn't the standard 100mm—it's 74mm instead.
There's a cable terminal on the right side of the hub,
so the right flange is narrower, making it an offset hub (with dish).
This does result in unequal spoke tension between left and right,
but it's far better than a no-dish hub designed for the narrower side.
Single-threaded fixed-gear hubs have dish for the same reason.
Basically, maintaining adequate flange width is more important
for lateral stiffness than having perfectly equal spoke tension.
Built it up.
The rim is the same as the rear wheel from before, but with straight-pull holes.
I built it 20H with black Leader non-butted spokes in radial lacing.
Before the rebuild it had CN spokes, 14-gauge plain, so while they're the same gauge,
I didn't reuse them. Since the new rim is taller,
the spokes would need to be shorter than before.
Plain spokes can be cut to any length, so reusing them wasn't impossible,
but since these aren't DT or Sapim spokes
and the spokes themselves are also on loan from the customer,
I used new ones.