Rear lamp: Basta Ray LED
Specifications:
Mass: 74 g (without any washers/nuts).
Size: 114 mm width, 67 mm height, 50 mm thickness.
Light source: 1 red LED, with slightly opaque LED housing which diffuses most of the light (except straight to the rear, which then is bundled by a small lens on the inside of the housing).
Mounting method: On the rear rack, 50 mm or 80 mm bolt distance (centre to centre). To change the bolt distance you need to open up the lamp.
Cabling/connectors: There are 2 clamp connectors for bare wires.
Price: ca. € 5,-
Pictures:
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Beam shots
See the camera settings page for more on the setup and settings to make pictures of the beams of taillamps.
Out of a corner (showing how much light is cast upwards, forwards and to the sides) [ F3.9 & F1.8 ]:
Wallshot (showing the beam pattern):
Visibility from various angles (0°, 45°, 90°, 135°) [ 0.5m, zoom x3, F3.5, ISO80, 1/250s & 1/60s ]:
Comparing taillamps
Experiences
Annoying for following traffic until which distance?: > 25m
Visibility: ?
Visibility by reflection: To be tested.
Ease of connecting wires: Simlpe for bare wires, a bit better perhaps than the original Basta ray although corrosion will be more of a problem. There is no provision for 2.8 mm plugs.
Design- and thus review considerations for taillamps
See Theory for taillamps.
Conclusion
Single LED as a point source, the LED's output is diffused but not spread out over a larger re-emitting area. So it stays a point source and gets too bright at close range for following traffic. Distance estimation is also impossible because of the point source.
Last modified: Fri Mar 30 03:22:08 CEST 2012
