Hella HL 2000 front LED - any good? heatsinking?

I notice Halfords here in the UK are stocking the Hella HL 2000 LED
front lamp under the Bikehut brand, alone or with a charger and NiMHs
or bundled with a rear LED.

Anyone know much about this? It's quite neat, looks like it should have
good side visibility, says it's BS approved.

I cobbled together an LED headlamp from a luxeon 3, schottky bridge,
fraen lens and an old lamp housing to use in series with my existing
dynamo lamps and schmidt hub. Works well but not very elegant.
I was wondering if I could substitute the luxeon in the Hella (clearly
visible behind the lens) which is presumably a 1W for my 3-watter and
drive it similarly to get a neater lamp with better and more
bike-suited optics, but i'm wondering if the heatsinking is up to that.
Anyone opened one up?

cheers,

rob.

wrote:

I notice Halfords here in the UK are stocking the Hella HL 2000 LED
front lamp under the Bikehut brand, alone or with a charger and NiMHs
or bundled with a rear LED.

Anyone know much about this? It's quite neat, looks like it should have
good side visibility, says it's BS approved.

It is good although the switch can be temperamental. As good as a 2.4W
*battery* lamp (not a 2.4W dynamo lamp, which is going to be brighter
because it's invariably overvolted).

Zog The Undeniable wrote:

wrote:

I notice Halfords here in the UK are stocking the Hella HL 2000 LED
front lamp under the Bikehut brand, alone or with a charger and NiMHs
or bundled with a rear LED.

Anyone know much about this? It's quite neat, looks like it should have
good side visibility, says it's BS approved.

It is good although the switch can be temperamental. As good as a 2.4W
*battery* lamp (not a 2.4W dynamo lamp, which is going to be brighter
because it's invariably overvolted).

Just another thought. NiMH batteries don't normally drive LEDs hard
enough for full brightness (more like half, measured with my light
meter). I'd run the LED on lithiums if you can.