The new best headlight

[soundwave]

that is 5hrs and not even near 2.5v

 

[Deleted member 4366]

When they get to 3.1v, they're as good as empty. There's no point in running them down past that because you risk harming them.

 

[Geebee]

Just came across this head light on Banggood, 12~80v so should run off your ebike main battery.
It should be bright with these specs and draw about 0.4 amps per hour on a 36v pack.
Light Power: 125W
Actual Power: 15W

http://www.banggood.com/DC12-80V-Motorcycle-U8-White-LED-Driving-Fog-Spot-HiLo-Light-Handlebar-Universal-p-1084759.html

 

[anotherkiwi]

You are going to be very popular with oncoming motorists with a beam like that! And if the oncoming motorist is a police car in hot water.

 

[danielrlee]

I'm not familiar with that light, but it looks like it features a 'barn-door' type shutter. This should let you adjust the beam cutoff to avoid blinding oncoming vehicles.

 

[IR772]

Light Power: 125W
Actual Power: 15W

http://www.banggood.com/DC12-80V-Motorcycle-U8-White-LED-Driving-Fog-Spot-HiLo-Light-Handlebar-Universal-p-1084759.html

Daniel your the watts man explain that.

 

[soundwave]

on ebay here
http://www.ebay.co.uk/itm/Motorcycle-CREE-U8-125W-White-LED-Driving-Fog-Head-Spot-Light-For-BMW-New-/351606655188?hash=item51dd63c8d4:g:tGwAAOSwwE5WX71E

 

[danielrlee]

Daniel your the watts man explain that.

'Light power' is just a nonsense comparison with an old fashioned incandescent bulb - 125W equivalent.

'Actual power' is the actual electrical consumption.

15W / input voltage = current draw in amps.

 

[IR772]

So you can have watts or watts I learn something everyday.

I wonder what watts d8veh's light is?

 

[soundwave]

ill get one of them motorbike lights and get a buck converter to up the voltage to 12v from my pack.

if its nor bright enough ill just add more power till it is ok or blow it.

 

[Deleted member 4366]

Daniel your the watts man explain that.

15 watts is what it consumes. It has the same brightness of a 125w incandescent bulb.

 

[soundwave]

 

[D8ve]

Incandescent bulbs use electricity to heat the wire till its white hot.
Less than 10% of the energy is radiated as visible light.
Led lights use magic to do with quantum gaps electron levels etc that produce photons of light directly. It's a very high efficiency process. Can be over 80%. So one watt into an incandescent system makes a very small bucket of photons and a lot of heat.
One watt into an Led produces over 8 times as many photons and very little heat.

 

[Planemo]

Has anyone found an easy way to tap into the 36v of the Oxydrive system? I really wish there was an output port somewhere. The USB one on the battery is handy I guess but I would rather have a light socket, I hate having to strap my bangood pack to the frame and I have forgotton to do it once, which made me have to return home after 8 miles into my commute which made me late for work and angered me no end!

 

[Deleted member 4366]

You would have to splice the battery wires inside the controller compartment, then drill a hole in the cover to bring the wires out.

 

[Planemo]

Thats what I hadn't hoped for. Do you know if the electronics are swimming in mastic on the OD kit? I know that some controllers are well sealed!

 

[Deleted member 4366]

The controller pcb is cast in jelly, but IIRC, the terminals or wires on the back of the battery connector are accessable.

 

[Nealh]

Oxydrive controller pics.

 

[Nealh]

My light arrived today and the size and light out put is pretty well neat. The lighting functions are very good the left hand button for the front bezel in flashing mode is proabably enough in town to be seen at night without using the right button for more options OR yes there is more, press both buttons together and you get a very intense very bright pulsing light which is blinding.

 

[Deleted member 4366]

My light arrived today and the size and light out put is pretty well neat.

Neat? Is that all you can say? Look at the title of the thread!