> My missus is having some problems seeing things on the 
> road now that she
> is riding her (motor) cycle home in the dark.
> I was wondering how 2 of these things mounted beside the 
> main light
> would go in terms of enhancing the "near field" 
> illumination something
> in the order of 20-30 meters or so would be the upper 
> limit of what I
> was hoping for, this is in addition to her existing light.
> Aimed fairly downwards so as not to get in the face of 
> other drivers.

Unlikely to be a cost effective solution. Biggest is 4 Watts 
which is only maybe 20 Watts tungsten equivalent or 5-10W 
halogen equivalent.

If it's legal where you are add some extra driving lights.
If it's not legal move somewhere sensible :-).

Or perhaps try and play with the beam forming optics in her 
present headlight.

In my motorcycling days I found that more light was usually 
better. Much more light much better.
Converting a 6V trail bike alternator system to 12V gave 
enough Watts for a real headlight at the expense of less 
light at low revs.

For night trials (car) a Cibie Super Oscar 100W Driving 
light made gravel roads an even greater joy. With the added 
bonus that if someone oncoming  ever stayed on high beam ... 
.

___________

Use with an A123 torch is attractive.
You'll need a boost converter with less than 4 cells.
Ask if you get serious about that.

Note that a 2000 mAh cell has about 2 Watt hour capacity at 
moderate load so at 4W load it will last << 1/2 an hour.



        Russell

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