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23.11.2010, 02:23 | 1 |
Увлеченный
Регистрация: 25.06.2010 Последняя активность: 24.06.2015 07:00 Адрес: Polska - Wroclaw
Сообщений: 57
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Поблагодарили: 24 раз(а) в 11 сообщениях
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CATEYE HL-EL500 (Best, can it be better ?)
Many of bike nightriders know this lamp well... bright, weather-proof, all-night... It is to expensive, to big and gives to small light spot – but you simply can’t find any better bike-lamp in this price Let’s go to business… You can’t dismount EL500 as easy as others cateye’s based on 5 mm leds - collimator is glued with led-base and it won’t take off easily. Most of people will stop here - destroying 50 bucks lamp isn’t the best idea - but by using long kitchen knife (not the spike - blade) and some carefully leverage you can separate collimator from base (if you have some luck the glue will split not the case ). And What you can find here : Luxeon emitter on some alu plate (heatsink) High advanced driver - 3 resistors… (you were expecting something more ?). Ok let’s test it – (4 AA bateries used few times). idle voltage : 5,6v load voltage: 3,48v work current : 230 mA Not too much but emitter in this lamp is pretty well thermal isolated from environment and you can’t give it more current. HL-EL500 have very good optics so I used Cree XLamp 7090 1W (if Lux was to spotty this should be ideal) and at the same current it will give twice much of light. Star wont fit at the first time, but using file do the job. Then some thermal glue, wires and you can put it back together... Before After Distance 2,5m, ISO200, time 1/8s, F 2.8, white ballance manual - fluorescent light. Spot is bigger but brightness is a bit lower, in addition there is 5 feet beam of usable light. I think that effect is worth 7 bucks and 2 hours of time : but it isn't overwhelming maybe with K2. |