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The current will have been rectified to DC by the front light which also provides the stand-light (no?)
No. A standard dynamo front light just passes through the AC power from the dynamo to the rear light terminals. They usually disconnect it if the front light is switched off.
There needs to be a second standlight circuit and capacitor in the rear light.
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Yeah.
That would explain why the dynamo variant is longer.
🙄
And in my heart it is what I knew to be true.It’s the opposite of what I’ve read about rear led dynamo lights though.
Bikeradar says;“These basic lights are little more than an LED inside a suitable casing with a long cable soldered on. These rely on the standlight circuit within the headlight to remain illuminated when you stop.
More complex rear lights are designed to work independently of the headlight and are wired straight into the hub. These will typically include their own standlight circuit”Annoying.
Is there a definitive online source for this info, Sheldon for the 20s?
absurdbird
Busch & Müller µ (Mu) rear lights;
There are two variants; the smaller version is most often described as an e-bike light, but I’ve seen it described (possibly incorrectly) as a dynamo light.
They’re pretty hard to find in the U.K. and are >£50 for something that you can get in Germany for < 30€.
Mostly they’re out of stock (in silver) or not available for shipping to U.K.
Anyway before I’d done proper research I drunkenly bought the smaller version on Amazon 🤦🏻♂️
Why would an e-bike light not work when powered by a generator hub via a front light (B&M IQ Xs)
The current will have been rectified to DC by the front light which also provides the stand-light (no?)
I know it’s not going to work (Sod’s Law) but why not?