Switched over to a dynohub with an edelux this weekend and I'm playing with my light level adjustment, I just cant seem to find a happy place. Too close and it is a washed out bright patch, too far away and it gets pretty dim.
Anyone found their happy place? Adjustment is also difficult since you need to be moving to have it put out some light, and the light is mounted on my fork crown.. these do not lend themselves to easy fidgeting.
After comparing beam patterns of different LED lights on the Web, I decided against Edelux, because of its too narrow vertical span and the anticipation of such problems as you describe. Instead I went with IQ Cyo with near-illumination that, from comparisons on the Web, yields a wider vertical span. Both near and far-away distances are simultaneously adequately illuminated for IQ Cyo. The situation with Edelux is unfortunate in that the previous halogen lamp of Edelux' manufacturer held a top spot on the market because of its beam being vertically widest of the lamps of the time and achieving goals that apparently Edelux does not.
I run the Edelux in combination with a Dinotte 200 or 400 (the 200 is plenty but I already have both). The Dinotte gives a nice flood to light up the close in area, and the Edelux gives coverage further out. Together they make a very nice combination. This also gives me 2 totally redundant lights. If either fails I can still make it home.
I have the Cyo which supposedly has the same beam as the Edelux.
Basically I put the bike on a flat surface, point it at something like a garage door, and adjust the light so the "horizon" on the light is about at a persons waist level. I would like it a little higher and I've played around with it, but then I end up hitting people in the face with the beam, and "waist level" works well enough.
I'm honestly surprised to hear that it gets to dim if it gets far away - it's supposed to be even brighter than the Cyo, and the Cyo is bright enough (and I'm picky) for everything except when it's raining on new, sheer black pavement, pretty much no matter how high I aim it (well within reason).
The "bottom" of the pattern is maybe seven or eight feet in front of me, and the rest goes out a goodly distance. It's nice and wide and nice and long. What's not to like? It's not as much light as the magicshine, but it's still plenty bright.
Now the back, that's what really matters. My Dinotte 300R should be here in a few days...