Wheels again today (and so on).
Today I built a hub dynamo for a small-wheel bike.
Small-wheel bikes have higher hub rotation speeds compared to 700C wheels at any given speed.
Even on a 700C, if you hit 60 km/h going downhill, the bulb will occasionally burn out.
As long as you don't ride that aggressively, you should be fine,
and since I'm using a 9.6V bulb instead of 3V, it shouldn't burn out easily.
With an 18-inch rim and a large-flange hub at that,
the spokes are extremely short and difficult to build.
I'm weaving the spoke crossings, but theoretically for a small wheel like this,
it's sometimes better not to weave them at all.
This time I went ahead and wove them for good reason.
Today I built a hub dynamo for a small-wheel bike.
Small-wheel bikes have higher hub rotation speeds compared to 700C wheels at any given speed.
Even on a 700C, if you hit 60 km/h going downhill, the bulb will occasionally burn out.
As long as you don't ride that aggressively, you should be fine,
and since I'm using a 9.6V bulb instead of 3V, it shouldn't burn out easily.
With an 18-inch rim and a large-flange hub at that,
the spokes are extremely short and difficult to build.
I'm weaving the spoke crossings, but theoretically for a small wheel like this,
it's sometimes better not to weave them at all.
This time I went ahead and wove them for good reason.