Wenn ich so sehe, wo die überall auftauchen. Hier in einem 5 Euro Teil - unglaublich.
(wobei deine Leuchte ja wenigstens noch was sinnvolles ist)

Na ja:Pibach hat geschrieben:Gibt eine interessante Alternative zur Fenix BC30: Evolva Future Technology
Hier bei Amazon für 43,99 EUR incl 2x Panasonic NCR18650B
Sowas im Strassenverkehr einzusetzen ist schon arg asozial.Negativ:
Die Lampe hat keine Straßenzulassung und blendet Entgegenkommende extrem. Man muss also wissen, was man tut.


Du hast da ja auch sämtliche potenziellen Vorteile ungenutzt gelassen. Diese sind:EmilEmil hat geschrieben: Ich werde jedenfalls nie wieder eine Akku- (Battery-) Beleuchtung ans Rad schrauben.
Wobei man zur Lumenleistung im Kopf haben sollte:Pibach hat geschrieben:Zur Lumen-Leistung. Die haben beide etwa 800 Lumen im Dauerbetrieb.
http://nabendynamo.de/produkte/edelux2.htmlLumenwerte geben die Gesamtmenge des erzeugten oder austretenden Lichts an. Sie ist schwierig mess- und nachprüfbar, auch bleibt völlig unberücksichtigt wohin das Licht leuchtet.
Quelle: http://swhs.home.xs4all.nl/fiets/tests/ ... ex_en.htmlThe Supernova E3 triple was introduced late 2008. At that time it was said to be 550 lumen. Later improvements by virtue of using newer LEDs (...) have resulted in claimed light ouput of 680 lumen (ca. Sept. 2009) and in late 2010, 800 lumen. As with all Supernova figures, these are datasheet values which don't take into account the losses in the lens, nor that LEDs often don't achieve the datasheet values. Esp. the Cree XP-G has been bad in this respect. Even if one assumes no losses from the lens, and if one assumes that the LEDs deliver what the datasheets promise, the Supernova figures just don't add up. With the newest E3-StVZO for example the LED, a Cree XP-E, has to be driven at more than 1.15 A to reach 305 lumen. This is above the value Cree says the LED will work (long time) at with no problems. Do they really do this or is something else going on? (Read this as: "Is Supernova just fooling us?". The answer seems to be affirmative)
• The latest E3 pro with asymmetric lens, non StVZO with XP-G LED (the supposed 370 lumen version,(...)) was measured at just 140 lumen at 20 km/h
• The latest version of the E3 triple which they're advertising at 800 lumen was measured at just ca. 330 lumen at 30 km/h and 345 lumen at 40 km/h
(...)
Mounted on a bike where I usually have an Edelux or Philips SLD mounted, it seems very very dim. There's no way this lamp produces anywhere near 550 lumen (not surprising, as even the 2010 version with XP-Gs doesn't reach more than ca. 345 lumen in Olaf Schultz' measurements).(...)
For use on public roads, a regular headlamp with cutoff gives much more useful light and for MTB use the lamp seems to me far too dim.