NTJ 1 Pair LED Motion Activated Bike Bicycle Wheel Valve Stem Cap Tire Light (4 Colors to Choose From)
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- motion activated LED valve light
- easy install screw on cap
- 3 AG10cell batteries included
- fits standard usa/europe valve stem
- 48-72 hours continuous approx. lamp hours
This item is available because of the Add-on program
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Name: Bicycle Valve Light Material: Plastic/metal Race Speed: 10km/Hour Length: 6.25cm Usage: wheel LED Light Setup: simply screw on your tire valve stem Valve Cap: American Standard / European Standard Supported Circuit: Independent Circuit Design, Light control circuit, sensor circuit, LED circuit Power by: 3*AG10cell batteries (include)
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My rear wheel has a drum brake, so for the rear wheel, this LED valve stem cap is long enough that it almost makes contact with the drum in the center of the wheel. It's a 15 inch rear wheel btw. The front one which is the only one I've been able to get a good glimpse when in motion by leaning over to the side of the bike, is an 18 inch wheel.
The brightness leaves a lot to be desired, and i do mean A LOT. It looks kind of like... fire in my wheel's spokes... actually. Pretty neat, but it's dim. I was hoping for something brighter.
I bought this color because of DOT lighting standards for motorized vehicles says that running lights on the side have to be amber. I'd get blue because blue LEDs are typically so much brighter, but the last thing I want is to get pulled over by a cop that wants to enforce lighting laws regarding blue lights being for cops only, despite the fact that nobody would ever mistake it for cop lights.
I was worried about having to balance the wheels with them on but even at 80mph I didn't notice any balance issues.
If they are screwed all the way onto the battery, they will not come on. I had to leave them a little loose, and worried about them rattling free, I secured it with some duct tape. When I got home after testing them, I took them off, removed the tape, and removed the batteries because these things don't have a proper on/off switch that physically cuts the circuit. The accelerator in them is therefore always on, and I don't feel like replacing batteries very frequently.
Still, for the money, it's pretty decent. It definitely won't look pretty on a bicycle since bicycles are so slow and have much larger wheels, requiring much faster velocities to achieve a ring of light, but I'd say it's probably bright enough for bicycles to at least get extra safety out of them... For a motorcycle lighting effect, eh, I think I'll save up for that transflective tape and LED setup that makes the wheels light up in a circle even if the wheels aren't turning. I'm just intimidated by how easy the installation is to mess up on that.