I got that iBlaast front light mentioned in a recent thread. It's pretty awesome. It's sort of stupidly good, the only thing it could do to make itself any more ridiculously OTT would be if it made you breakfast in bed and danced a jig.
I've just done a ride from Banbury to Brecon and back, and not being an early riser, each way involved about 5 hours riding in the dark. I had the iBlaast on its third-from-lowest setting most of the time, and when I got to brecon I'd still used less than 15% of the 4.4Ah Li-ion battery, I didn't bother charging it, and when I got back home, after another 5 hours in the dark, the battery STILL wasn't more than 15% used, as indicated by the charger, which has indicators for bulk or top-up charging, the threshold being the top 15%.
Two things worth mentioning, I kept the dynamo light on all the time, a Solidlights 1203D - this is because I hadn't yet got a decently fitting socket on the iBlaast cable and was afraid of it working loose on bumpy downhills, which it did a couple of times, so I wanted another light on as a backup. But I reckon that brightness setting is perfectly adequate even without the dynamo going, though obviously there's plenty of leeway to have it brighter. On the very lowest power setting they reckon you get 90 hours with a 4.4Ah Li-ion battery. There's chart on the website for currents used on various power settings so you can work out what the respective runtimes will be.
The programmable bit is where it gets silly - there's an "admin mode" in which you programme how the one single switch works while your riding. You can set it to three different scroll modes, just simple on/off, or low/high, or low/med/high. In each of those you can set each level, there are countless increments for each level, except the high level which is either pretty gorgeously bright or somewhat brutally bright. There's a third setting of even a tiny bit more brutally very bright, but that apparently is not usable with the current LEDs, it's there for a future upgrade.
There's also a flashing mode which scrolls between five or six flashing patterns.
As if that weren't enough, you can set it for three different typical battery types, voltages being 12, 13.2 and 14.8, as in lead-acid, NiMH and Li-ion respectively, and as long as it's set for the correct type it'll warn you at given increments as the voltage drops, also it'll automatically go to a low power setting as the battery's getting towards running out, then warn you when it's about to cut out to avoid trashing the battery. You can over-ride this cut-out if your life is more important than your battery's, though I haven't tried that yet, cos quite frankly compared to the cost of a Li-ion pack I think my life can be considered worthless.
Anyway after that it starts playing note-perfect Rachmaninof and dancing Swan Lake.
I did get a few soakings on the ride back, enough to ring home for a lift from Stow on the Wold (shame on me!), it was cold and wet enough for the Garmin GPS to die (it was only on for moral support anyway) and even the speedo bit the bullet after the third downpour, BUT the front light didn't flinch.
I've been very happily using a Lumicycle HID for about 3 years, totally happy with it except for two things:
1) It doesn't like being switched on and off too often, as in you switch it on at the beginning of a ride and off at the end and you leave it on if you stop for a quick waz, since "striking" (switching on) significantly reduces the bulb's lifetime, i.e. the bulb's life is determined as much by how many times it's switched on as the time it's run for (£75's worth of bulb by the way)... and if it gets accidentally switched off it takes up to 10 seconds to re-light, by which time you've gone head-first into a tree.
2) it's fragile, possibly more so that a normal filament bulb, though as you can imagine I haven't experimented to find out exactly how fragile it is!
Neither of those are much of a problem, but they make it a bit fussy to use.
The chargers and batteries I have of theirs have been totally excellent, no nasty surprises and no drop in performance in three years, which makes them effectively quite cheap even at prices which seemed high at first.
The narrowest iBlaast beam is slightly wider than the 6deg Lumicycle HID beam, brightness on highest power is roughly equivalent, and I think at that setting runtime is roughly the same. The only way to change the beam angle in the HID is to buy another bulb (another £75), the iBlaast does it by changing the lens, (I think). The Lumi is better at pointing a spot 100yds and more up the road, which is good for fast rides, I think I'll carry on using it for those, But for long rides, maybe over a several nights, the iBlaast is a liberation cos as long as you're not addicted to turning night into day, you can make it last over a week of long nights, and you can still give it a blast of top power for short stints without significantly running down the battery.
The iBlaast bracket is a bit flimsy and works with this weird velcro stuff, but actually in use it makes sense, and you can flip it up very easily to flash motorists that don't dip their headlights, also because of the flexibility of the bracket you don't have to grind the clamp down too tight cos it bobbles about over bumps rather than swivelling round on the handlebar, even though it seems a bit wibbly wobbly at first. Having said that, I haven't used it off-road yet but it did get some fairly major pot-hole shocks and didn't move at all on the bar, even though it was loose enough to be swivelled by hand to dip it for towns at rush-hour.
I ordered the iBlaast with bare wire ends, and had to solder a socket on for the Lumicycle plug.
The Lumi HID costs about £180, the iBlaast was £109 direct from New Zealand, but customs added another £25 and a certain bunch of clowns that have always been incapable of delivering a box of chocolates to their own grandmother without reversing their van over it and leaving it at the wrong house... charged me an extra £8 for the privilege of going 20 miles and fetching it from their depot. They shall remain nameless but they are the default carrier and their name rhymes with "horse" (I use the term "carrier" in its loosest possible sense). Even at that total cost and that extra hassle, it's a superb deal.
By the way, I have no interest in this other than I've just used the thing and I think it's superb. Check out: http://www.nightlightning.co.nz/endurenz%20details.htm
PS - that B&M Big Bang thing looks even more awesome in that you can get a proper dipped beam - but I think I saw it somewhere on sale for about £500...
