a.s.elliott(at)cox.net
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 Posted: Tue May 01, 2007 7:47 am Post subject: X1010 beam pattern and weights |
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I have not done any careful measurements of the lights beam pattern, but do have the following *estimates* of lateral dispersion.
Fog bulb cover installed - 50° (taxi light)
Fog cover removed - 25° (landing light)
Vertical dispersion is *very* low with the cover in place, certainly less than 10°. Much more and OK for a landing light (How's that for technical justification?) with the cover off.
As you can imagine, the actual full dispersion has to be at least the same with the cover off as with the cover on. The big difference is really the size and power in the central hot spot. In the fog version, this is a very small spot with limited down-the-taxi penetration. With the bulb cover removed, the hot spot is much larger and more powerful, and completely dominates the beam's appearance.
Note that the bulb cover is actually an enveloping piece of solid metal, completely covering the front 1/2 of the bulb and with carefully cut leakage patterns in the rear and sides. The 4250° units I bought put out out a very white light.
Final note - the case/reflector in the X1010 is 1 piece of metal; only the rear cover is plastic. It is completely weathersealed and seems *very* robust. The lens is tempered glass, meaning that you could comfortably leave it exposed to the wind and rain if that was your mounting preference. It isn't light.
Weights: 1 lighting unit - 25 oz.
1 ballast unit - 11 oz
FWIW,
Andy Elliott, Mesa, AZ
N601GE (reserved)
601XL/TD/QB, Corvair, building...
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