For those who mount a light on a fork, where do you prefer to mount the light on the fork - low, medium or high? Is there any advantage for a particular position? thanks.

mid-fork

problem with low is there's no room with the wheel quick release there
problem with high is my fork doesn't have high rack eyelets

I prefer the fork crown, it is better protected from damage at the lockup racks.

Don't know if this helps, but this is an old English bike. You can see how they mounted the light in the '50s and early '60s. There was a braze-on mount right on the fork blade. It does free up the handlebars for a bag, and is nicely positioned (IMO) to illuminate the roadway.

Thanks all. Very helpful comments.
I ordered a Minoura mount: https://www.amazon.com/gp/product/B00...ls_o00_s00_i00
which doesn't require eyelets. I'll experiment with positions, probably mid to high fork.

To me, it looks like that rack isn't level. If that is indicative of old English bikes of the period, it's no wonder Carradice seat bags are so popular.

I prefer the fork crown, although that's partly because it's the only place I've tried. I like having the light visible to the left (in the U.S.) so oncoming traffic can see it clearly, and I don't want to have to look for the edge of the road to the right using light flickering with spokes from the wheel. Correctly oriented, it's quite adequate for seeing washboard road shadows and potholes.

I was told that the lenses of the fancy B&M LED lights I use have been designed to be mounted at the crown. So, basically, there is not any choice.

The NOB is another option that I like: https://www.ebay.com/itm/CRONOMETRO-N...9#ht_626wt_900

Is said the Low, End of the QR mount .. light has a shadow contrast,
holes in the road stand out.

I have a lowrider hoop mount on my touring bike, [Paul's Gino for LED battery light]
26" high

Dynamo powered, a fork crown mount on the 26" wheel, [nylon-plastic]
33" off the ground

a mount in the headset stack of my Bike Friday, It's a bit of a kludge,
Bike Friday folding steerer mast is a 1" quill , so the Nylon piece
made for threaded 1" headsets, I got from Peter White,
got inserted over the quill , then I put the quill back in the fork..
It's light, 30" off the ground..