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Shimano Hub dynamo - any good?
I'm thinking of having a wheel built up with one of Shimano's hub
generators for winter riding purposes. Has anybody ever used one, and what were your experiences with reliability, power output at low speed, drag when not in use, etc? The have at least two different versions with different power outputs, and I am looking at the 3 Watt version. -- I want to ride my bicycle, I want to ride my bike. I want to ride my bicycle, I want to ride it where I like! |
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#2
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Shimano Hub dynamo - any good?
I have the DNH370 or DHN370 or whatever it's called. The '370 model.
I've had it for just under a year. It's great. I love being able to get on my bike, flip on the lights and go, no worries about batteries. I do run a battery-powered light in back, but I almost wish I had the rear light hooked up the generator as well. It's really cool. To answer your questions: 1. It's been rock-solid reliable. 2. I run a Lumotec halogen light, and it flickers a bit at very low speed (slowing down to stop). I keep a white Cateye blinky on my helmet for this reason. 3. If you try to spin just the hub, it's notchy. If you spin the wheel with no load connected, it's not quite as free-spinning as a regular hub, but not bad. If you spin the wheel by hand and put a load on it, the wheel stops pretty quickly. In actual riding, you notice no difference. 4. You didn't ask, but...it is significantly heavier than a typical front hub. That doesn't matter much to me, but I can understand how some people wouldn't like it. 5. Make sure you get a good headlight. I recommend the Lumotec, for one thing because it's easy to change the bulb. Generator systems DO burn out lightbulbs over time (a bit faster than battery systems) so it's a good idea to have a spare bulb handy. With the round Lumotec model, I can change bulbs wearing full-finger gloves. |
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Shimano Hub dynamo - any good?
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