Jup, interesting ideed. Gearbest has mentioned they might be doing jointly groupbuy with some bicycle forum for it so the price can be very attractive even with battery as is.
Will take some beam shots tonight with the light attached to the bicycle bar.
Well, I don't expect any PMW when you basicaly just turning on/off the leds. Heat sinking is to be inspected, though, but after I make beam pictures, just in case ;-)
So I guess I was right. The wide beam is appropriate for lo-beam and the narrow for hi-beam. Lo-beam will particularly be useful on heavily vegetated trail rides at night where you need to see ‘everything’ near you. Hi-beam will be useful on straight roads and at higher speeds.
The common problem I encountered with my bike lights (I had four plus the ledoman X6) is that its chargers are usually defective. Of the four bike light chargers (one is using Pannovo Battery Case), only one charger is currently working, one lights up but only gives 4.2 volts, one won’t function, and I had one ordered from eBay wherein I tripped the circuit breaker of my house when I plugged it in. When I inspected afterwards, the wires leading from the AC jacks were connected by a solder blob in its PCB. I assume its was accidentally done during manufacturing.
Also, I think the tail cap current readings of the HD-016 is within what is common among Chinese bike lights. Here are the tail cap readings of my different bike lights on high:
I did some dissasemblig last nigt, but haven't publish the pictures yet. There can be seen sense resistor R150 (0.150 Ohm) and LEDA chip, so the current to the led can be calculated. AFAIK feedback voltage of this chip is 0.25V. So 0.25 / 0.15 = 1.66A
As you can see on my pictures, input power is about 5W (7.82*0.65). If you put it back 5/1.55 = 3.06V. This quite good fits on Cree Vf chart. It only assumes 100% driver eficiency, which is not, of course. So I would say it is about 1.5A to the single led.
I think its simple. They are not made from the same factory and either one, two or all of them are clones. :bigsmile:
All of them were bought from different sellers in eBay, all based in China. Two are colored red and even their ‘reds’ are obviously different from each other. I think its just like what happened to the Sky Ray King. There are so many versions of the SRK that it would seem impossible to tell which is genuine.
Well, yes, more dedicated . Will see how will go about groupbuy. I know the head only would be better, but then yet, for the price you get nice rubber coated battery pack as a bonus.
I’d love to see something like this, with an on-off switch in the light itself, and a remote switch to swap modes between hi and lo beams, close to my thumb. It should have a jumper or group modes to select whether you want to use both beams in hi mode, or just hi beam. that would be my perfect bike light.
switching between all modes in this light when you approach upcoming traffic is a deal breaker. just hi and lo please
The internals look very similar to that of a SolarStorm X2. I may have more bike lights than we have bikes at home but yes I would also be interested in a group buy. :bigsmile:
It seem like a nice bike light…but not quite sure about pulling the trigger yet…maybe GB on this light to about $25 then I might take the bait ( I really hate buying from them though, their handling & shipping is too slow for me )
No, unfortunately not. You can put in shrink wraped 2S2P pack - the one you tipicaly get with cheapo lights. The only problem is plug connector which does not pass the wire hole. This means you have to push wire trough the hole first and connect (solder) it to the pack. At last you put the pack in the rubber coat. Not the easiest thing to do, but it's doable with not much hassle.
I've borrowed picture from the other site. You can see the "window" at the bottom side: