Sujet : Re: bike light optics
De : frkrygow (at) *nospam* sbcglobal.net (Frank Krygowski)
Groupes : rec.bicycles.techDate : 10. Apr 2024, 18:36:37
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <uv6f6m$12esr$3@dont-email.me>
References : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
User-Agent : Mozilla Thunderbird
On 4/10/2024 7:06 AM, Rolf Mantel wrote:
Cheap hub dynamoes have a rolling resistance in the order of 15W to generate 3W. A good hub dynamo can probably get those 12W out of a mechanical resistance in the order of 20W.
Wow. I wasn't aware that any hub dynamos were that inefficient. Can you say which brands those are?
-- - Frank Krygowski
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