On Monday, May 7, 2018 at 10:41:18 PM UTC+1, Sepp Ruf wrote:
Jeff Liebermann wrote:
On Mon, 7 May 2018 20:24:58 +0200, Sepp Ruf wrote:

https://fahrradzukunft.de/26/steckdose-unterwegs-6/

Looking at the graph in Fig 13, 16 kph produces 1 to 3.5 watts. What's
different is that this dynamo does not saturate and continutes to
produce higher power output when spun faster.

If my German is still functional, Fig 4 says in the caption 15 watts
at 12 km/h. However, the English language text in Fig 4 says "With
riding speeds up to 12 km/h... can supply 0.5 to 2.5A. That makes no
sense and contradicts the numbers from Fig 13.

Looks like a triple complication the

a) Fig 4's Chinese marketing English;
b) the anti-functional German grammar putting the key verb at the very end;
c) the caption author's consumer-friendly (mis)interpretation of a), as his
caption reads "... which is claimed ["verspricht" does not solely mean
"promises"] to deliver an impressive 15W at just 12 km/h."

The paragraph beneath Fig 14 reads:

The Neco Rove hub dynamo with ballast electronics only starts to deliver
significant charging current from 15 km/h in the 28" wheel. The 12 km/h
mentioned in the Neco advertising are thus to be understood as the minimum
speed for a loading process in the 26" wheel. There, however, not - as can
easily be misunderstood - 15 watts, but only 0.15 watts are supplied. Only
at over 20 km/h can you reach the range of over 2 watts that a modern
smartphone needs in operation. The advertised 15 watts of USB are only
reached at 50 km/h. (....)

(Translated with www.DeepL.com/Translator, which Elon Musk would not
hesitate to call Multi Language Auto Pilot.)

You expect too much, Sepp. Precision, honesty in advertising, even common sense -- any economist will tell you that today those are unpriceable commodities because they are so rare that they are beyond price.

AJ
Dismally yours