saturnsc2

if you have a cycle computer exactly how fast do you have to be going when the iq-x light first turns to full brightness? since this light has 8 led's installed I read I'm curious. my cyo gets to full brightness almost at a fast walking speed. I think the drawback with these bright lights is you have to go faster for them to reach full brightness. with my old cyo & rear toplight with single led's each, that system got bright at walking speed, but now with my new rear light with brake tek & the new cyo, I noticed you have to go a little faster for full brightness, not much but a little. the new cyo has 5 led's & the new brake tec rear light I think 2 led's when the old system had a total of 2 led's between the headlight & taillight....

saturnsc2

[QUOTE=kickstart;18639284]Did a 45 minute test ride in light rain, and can say I'm very impressed with the IQ

is it the light from those 2 side lights that give the wide beam near the bike?

i was told there was 8 led's installed in this light. 2 for the illuminated switch, 2 for the sidelights, 1 for the main beam & 3 for the daytime running lights. is this how it's configured?

southpawboston

[QUOTE=saturnsc2;18669363]The two side lights are their own LEDs, and they are rather dim. They do not contribute at all to the wide beam near the bike. That is created entirely by the reflector inside the light for the 1 main LED.

noglider 

In general, the faster you go, the more light you need, so this could work out just fine, depending on where you ride and how fast you go.

kickstart

While I do have a computer, its not lit......

Seat of the pants say 1 or 2 mph more is needed to get to full brightness, maybe. In use it doesn't make any practical difference. Overall its a much better light than the 80 lux Cyo premium plus.

kickstart

That's correct, the side marker lights don't add anything to the main beam pattern. They do cast a slight peripheral glow, but its not useful light to see by. The main beam is strictly the single primary LED, the 2 secondary LED's only function in DRL mode. The side marker LEDs are on in both active modes, and standlight mode.

znomit

The main LED is actually two LEDs.



Teardown pics here
Ausflug ins Blaue » Der IQ-X von Innen ? Demontage des Scheinwerfers

I think max brightness is around 15kph buy its hard to gauge exactly, it may slowly ramp up after that. Usable light from brisk walking speed, nice and bright from around 7-8kph, no problems even on steep hills with tired legs.

kickstart

Sure is isn't it. Its just so small, looking at it through the lens it looks like only one. Amazing.

unterhausen

that reflector is pretty interesting. In the past, there have been more facets. Still haven't hooked mine up, tomorrow maybe

saturnsc2

so their just to be seen then. they really don't light up the sides of the road...

saturnsc2

well that's why it's so bright then.

saturnsc2

do the drl's at night turn completely off? on my cyo premium they still glow but dimly & during the day the main led also glows dim, while the drl's then are fully illuminated.....

kickstart

Yes, the side marker lights are just as their name implies, "to be seen", not "to see".

PaulRivers

Yeah, I wouldn't call it a drawback at all. With the older Cyo (non premium) you could get enough light walking the bike to walk it, or ride it at 2-3mph. That was sufficient for that speed. When you went faster and needed more light you got it.

unterhausen

one thing I didn't like about my Luxos is that if you are on a really long climb and not going very fast, then the flashing can get really annoying. I have upgraded my secondary backup battery light for those situations, but there was one ride where I really regretted my lighting choices.

kickstart

The IQ-X doesn't put out light at walking speed, but does at around 3 mph. The standlight being the main beam dimmed rather than the DRLs, is enough for walking speeds.

PaulRivers

Really? Weird. I can say from personal experience that the older Cyo (non-premium) works at walking speed without annoying flicker (I mean it might flicker not sure, but not enough to be annoying). Weird (though certainly not impossible) that they would move away from that.

saturnsc2

so does my cyo premium it puts out bright light at walking speed, it pulsates, but the light is pretty bright just for walking. the iq-x doesn't put out ANY light at walking speed? well that's how they get the 100 lux out of it then. it's dead or very dim at low speed when other lights are already bright at very low speeds. the iq-x sounds like it needs more speed then others to get up to good brightness.

it has 8 led's so i guess it needs more current than most lights.

saturnsc2

here's a video on you tube the first time i seen it showing a person who has this light on his bike: https://www.youtube.com/watch?v=Jd3K5FOOZpw

in all the b&m photos it shows a wide beam near the bike. both sides are totally lit up, but in all the pics i seen in real life it seems to show a narrower beam near the bike without all that side light...

SMartin

from the manual about rear light hook up

Two duplex cables of different length are incorporated in the headlamp:

connect the long cable 1 with the hub dynamo (cut as required)
/connect the short cable (with integral plugs) 2 with the enclosed

cable or with the cable attached to the bicycle to the rear light.

kickstart

I rigged up a light so I could see my computer, and this is what I came up with.

At 2 mph, or a brisk walk it starts emitting a dim, but usable light via the standlight.
At 3 mph it transitions to the main beam.
It continues to brighten, and at 5 mph its casting the full beam.
At 8 mph its at full output.

It will flicker if one stays right at the transition speed between the standlight and main beam, but is otherwise steady. The Cyo is brighter at walking speed, but the IQ-X surpasses it at around 4 mph, and beyond that there's no comparison.

The standlights are completely different.
The Cyo is brighter up close, almost annoying as one is looking directly at the LEDs and it casts a pool of light around the front wheel, but not much further.
The IQ-X isn't as bright up close as its the main beam dimmed with the cutoff effect, but its brighter further away, and extremely bright if viewed below the cutoff. It also casts light out about 30' rather than just a pool like the Cyo.

kickstart

The IQ-X and Cyo are similar for the first 50', but beyond that the IQ-X beam is almost like there's a 2nd brighter light where the Cyo is fading out. It gives the illusion that its narrower because it casts a much longer beam but overall its wider further out, and hard to compare because they are different shapes.

From what I see, the pictures and videos are fairly useless in making a comparison.

saturnsc2

since this light uses 2 led's as the main illumination, there's like 2 separate beams, & you can see the slight dark area between them.
do you yourself own a cyo premium?

saturnsc2

did you sayin an earlier post that the side lights light up with the standlight?

unterhausen

I have a cyo premium which I just installed. I'll have to get the IQ-X installed and then compare