A customer brought me a set of tubular rims for the SES (Smart Envy System)
called the "4.5".
From the model name, you might think they're 40mm and 50mm high,
but they're actually 48mm and 56mm high, making a front and rear pair.
Today I just built the front wheel.
Filwood Road Hub Front 20H
Black CX-RAY with counter-radial spoke lacing.
The bearing that's completely visible inside the end is
a 6902 (outer diameter 28mm / inner diameter 15mm / thickness 7mm),
and with its contact-type seal, the rotation is smooth but feels a bit sluggish.
Unlike the design many manufacturers use—with a contactless-seal bearing inside
a dust cap that has a slight gap—
this approach might actually have better dust and water resistance.
There's probably a reason they want to position the bearing as far outward as possible.
The customer said, "Use them if you can,"
so I have some black Filwood spokes on hand,
but since they're round spokes, I'll use them only on the freewheel side of the rear wheel
and go with a semi-competition build.
They have a threadless design, and to allow a wider margin for cutting,
the plain section on the rim side is quite long.
I can cut them as far as where the Haiko GT is pedaling.
called the "4.5".
From the model name, you might think they're 40mm and 50mm high,
but they're actually 48mm and 56mm high, making a front and rear pair.
Today I just built the front wheel.
Filwood Road Hub Front 20H
Black CX-RAY with counter-radial spoke lacing.
The bearing that's completely visible inside the end is
a 6902 (outer diameter 28mm / inner diameter 15mm / thickness 7mm),
and with its contact-type seal, the rotation is smooth but feels a bit sluggish.
Unlike the design many manufacturers use—with a contactless-seal bearing inside
a dust cap that has a slight gap—
this approach might actually have better dust and water resistance.
There's probably a reason they want to position the bearing as far outward as possible.
The customer said, "Use them if you can,"
so I have some black Filwood spokes on hand,
but since they're round spokes, I'll use them only on the freewheel side of the rear wheel
and go with a semi-competition build.
They have a threadless design, and to allow a wider margin for cutting,
the plain section on the rim side is quite long.
I can cut them as far as where the Haiko GT is pedaling.