I wish it was relatively easy to get a 'cut-off' effect with reflector Mr16 size

[hit4six]

It's easy to work out from thinking about how a reflector works, needless to say I only worked it out through experiment. A cresent shaped strip on the lens should obscure half of the hot spot. Easier to work with a larger diameter lens.

(After I post my pics I'm gone forever.edit i expect by end of month)


*******
ha ha ha ha ha. It looked a lot better indoors than it did facing it on an open road. First test ride was dissapointing. Problem is there is still too much spill. It is better than nothing so I won't give up yet.

I've tried two designs, i'll continue to tweak them, maybe discover somthing else. One is a narrow (0.5cm?) horizontal bar somewhere between 1/2 and 2/3 of the way down the bulb, flat agaist the lens. The other is a reflector just below halfway that projects 5cm forwards and slightly down, maybe 75-85 degrees.

 

[sfCyclotourist]

Re: it is relatively easy to get a 'cut-off' effect with reflector Mr16 size

Looking forward to the photos!

 

[hit4six]

So I'm still here. This is the best I got so far, they both use shields/hoods to limit the spill and protruding reflectors to modify the spot, on the left it is reflecting upwards, on the right downwards.

The left image does not show clearly that there is a cut-off line like in the right image, but is was just as evident when I took the photo. The reflected area is above this line.

The image on the right -the cut off, ie where the light is blocked off by the shield, cannot be lowered further otherwise the shield interferes with the spot, greatly reducing its intensity.

The reflected area is less intense than the spot proper.

Without the protruding reflector spot is also wider. Because of this inefficiency, with 8degree bulbs it may not be worth using the reflector.