A question about lumens.

anotherkiwi

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Don't be bone. Dip your own beam by pushing it downwards a bit.
My arms aren't 1.50 meters long... :rolleyes:

I found your light output very underwhelming in the video tbh. Like in Germany it is illegal to ride with more than one light on the front of a bike here. Something to do with differentiation between type of vehicle. And the legal minimum is 15 lux which I bet many old fashioned lights (before halogen bulbs) don't even reach.

When I reinvest in the trike's equipment I will put a 150 lux high end e-bike light on the front and chuck a 4S Lipo in a beam bag to feed it. It should be good for up to 90 km/h... :D
 
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soundwave

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Last edited:

asc99c

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May 1, 2015
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Yeah, floodlights look better on videos as it looks like the whole scene is evenly lit. Anything with a more directed beam tends to cause the camera to reduce exposure and then everything else looks dark.

Sent from my ONEPLUS A3003 using Tapatalk
 
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anotherkiwi

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SW b+m have taken all those bits and put them in a really nice water resistant case with a better reflector giving a correct beam shape for on road use and a mounting system for me. They also had it certified by German Road Safety. For 47 €... On the road you don't need to light the tree tops, you need a flat, wide, long and bright beam on the tarmac.
 

soundwave

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but that was pumping out 2000lm no bike light has a xhp 70 led in it last time i looked ;)
 

trouty

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Interesting - I have a five year old Hope Vision 2 (480 lumen). The battery is in the twilight of it's career and they've since changed the batteries and connections. I'd quite like to revitalise it rather than throw away a decent light. Is that something you can help with Trouty?

Gaz
Yes can do it gets new leds , new driver , new switch .
Did about 500 of the buggers a few years ago.
Charged £70 each at the time. Including return postage .
But it became uneconomical when the cheap Chinese stuff flooded the market

The leds driver and switch cost £30
So I made £35 profit after posting back .
 

soundwave

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Yes can do it gets new leds , new driver , new switch .
Did about 500 of the buggers a few years ago.
Charged £70 each at the time. Including return postage .
But it became uneconomical when the cheap Chinese stuff flooded the market

The leds driver and switch cost £30
So I made £35 profit after posting back .
http://www.ebay.co.uk/itm/Cree-XHP70-White-Led-6V-16MM-20MM-Copper-PCB-26MM-1-mode-5-modes-driver-/152694165451?var=&hash=item238d480fcb:m:mes0mtYPItMcBUh8EyRr09g
 

trouty

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And that soundwave is why Troutielights stopped trading .

Much kudos to you for sticking with the diy route I still make a few lights and dabble with new leds now and again .

But since the xpg s arrived on the scene. The newer stuff like your 70 is too flood and needs a huge reflector to send the lumens down the trail and each new led while it produces good lumen counts becomes harder to find good optics or reflectors .

I have loads of. XPE , XPG . XML and the newer variant leds in my spares bins
Plus quite a few different driver boards from www.taskled.com
And do enjoy messing with them .

My current helmet light outputs approx 4000 lumens and will send those rays well over 400 mtrs down the trail on full power .
Which is only used for laughs

It’s the bottom one
41128E16-DF7D-4844-8671-2BCE3060AEE6.jpeg

spider eyes. And Liberator. Are the other two.
 
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soundwave

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you got a driver that is 12v to the led kicking about? or a link to one.

also not much out there to diy a bike light as lack of hosts and reflectors.
 

soundwave

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DSC_0663_01.JPG
12v 2.4a tho i think i should of got the 6v ones as lot less hassle for a batt to run them form as buck converter not much use on a bike lol.
 

soundwave

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DSC_0617_02.JPG
 

LeighPing

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I found your light output very underwhelming in the video tbh.
Bang for buck, it's not a bad light. In that rainy, well street-lit video it's hard to judge it's effectiveness. Here's a mix of well lit urban, dark lanes, woods and fields that show it's output a bit better.

 

soundwave

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Gubbins

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soundwave

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MikelBikel

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Jun 6, 2017
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Am using a 'Nestling' 7xCree from Amazon, looks same as eBay one below.
So bright i only use it on dip and angle it down. Would like it to mechanically dip like interior rear mirror, have a real metal fixing and come on in same mode as it was when i switched it off, and switch rear lights as well! Not asking much eh?

https://m.ebay.co.uk/itm/Bicycle-Flash-Light-Nestling-10000Lumen-7x-CREE-XML-T6-LED-Headlight-Light-/322314914286?epid=1389494554&hash=item4b0b7749ee:g:qvAAAOSwKOJYGdt2&_trkparms=pageci%3Ae77dd6ca-af69-11e7-aceb-74dbd180a80e%7Cparentrq%3A1167521815f0a9c5185ecd1cfffcb108%7Ciid%3A6