Wired-in front light recommendation for Cube ebike

[Dadam]

Hi, my other ebikes have permanent lights wired into the battery which is great to have. Why have lights that need recharging when you have a big battery in the bike anyway?

I'm looking for a decent quality front light for my Cube Reaction e-MTB, which already has a wired in rear light on the mudguard, switched on and off from the handlebar controller. I want a permanent wired in front light with a high beam/low beam button on the bar. The high beam (or high power) must be bright enough to illuminate trails and paths in full darkness, and the low beam must be ok for not dazzling other road/path users.

Ideally I want it fixed to the fork mount as there's no room in front of the stem.

I've seen this Cube Acid brand light which is obviously compatible with the Bosch system. The price seems a little high but I don't mind if it's a good light, though it doesn't mention a high/low controller. Digging deeper it seems any light of the right voltage would be compatible if I obtained the right Bosch cable or adaptor.

How many lux/lumens is needed for dark off-road riding?

 

[wiggydiggy]

I've got one of these AXA Compact 35 EBike Headlight, its 35 Lumens. I personally don't find it bright enough at my normal speed but at lower speeds I'd expect it to be ok. That one is no longer available BTW its just for comparing.

Someone took an image of the spread:

That cube one looks a lot better, heres a video I found of it:


View: https://www.youtube.com/watch?v=8wAnDrQes9Y

 

[CXRAndy]

Hi, my other ebikes have permanent lights wired into the battery which is great to have. Why have lights that need recharging when you have a big battery in the bike anyway?

I'm looking for a decent quality front light for my Cube Reaction e-MTB, which already has a wired in rear light on the mudguard, switched on and off from the handlebar controller. I want a permanent wired in front light with a high beam/low beam button on the bar. The high beam (or high power) must be bright enough to illuminate trails and paths in full darkness, and the low beam must be ok for not dazzling other road/path users.

Ideally I want it fixed to the fork mount as there's no room in front of the stem.

I've seen this Cube Acid brand light which is obviously compatible with the Bosch system. The price seems a little high but I don't mind if it's a good light, though it doesn't mention a high/low controller. Digging deeper it seems any light of the right voltage would be compatible if I obtained the right Bosch cable or adaptor.

How many lux/lumens is needed for dark off-road riding?

I have the supernova M99 Pro wired into my ebike- fantastic high low beam with day light running lights too, pricey but quality

https://www.google.com/search?q=sup...rome-mobile&ie=UTF-8&chrome_dse_attribution=1

Re wiring, I bought the ebike version which allowed upto 50V supply. The original lamp was powered from a 12V supply from the ebike motor. I wired in a relay, so the 12V controlled the 50V supply from the battery. Placed little PCB relay and wires inside cavity of battery area. Plenty of room for small additions

 

[ebikeerwidnes]

Anyone know how you can wire a set of lights into a Bosch Purion controller??

and how much it costs and if it needs a LBS (or other dealer) to reconfigure the system??

 

[CXRAndy]

Does the bike currently have lights? Are they specific can-bus controlled or simple voltage switch?

If the controller just sends 12 volts or even 5 volts you can wire off the battery terminals, with a fuse to protect the battery if the add-on circuit has a fault. Use a relay to switch the higher battery voltage.

 

[CXRAndy]

Just checked my notes , my bike has a 6V original headlight. I used a small PCB design relay with 5V coil, 6A current capacity with 250V contact rating, like this

https://cpc.farnell.com/finder/3221...0212&msclkid=8c8f14a21a1d1c5827d773952524a10a

I made up a tiny PCB from breadboard copper track , added some fuses, back EMF diode(coil) to protect other circuits wired up with little connectors, the wrapped in electric tape. I maybe able to find my cobbles together photos

 

[Dadam]

I've got one of these AXA Compact 35 EBike Headlight, its 35 Lumens. I personally don't find it bright enough at my normal speed but at lower speeds I'd expect it to be ok. That one is no longer available BTW its just for comparing.

That cube one looks a lot better, heres a video I found of it:


View: https://www.youtube.com/watch?v=8wAnDrQes9Y

That does look good but it's the 140 (think the 140 refers to the lux output) but the one I linked is the 110.

Anyone know how you can wire a set of lights into a Bosch Purion controller??

and how much it costs and if it needs a LBS (or other dealer) to reconfigure the system??

This is part of my question; I have the Purion controller on my bike. The cables are available aftermarket so maybe it's as simple as plugging it in somewhere?

 

[mjr]

How many lux/lumens is needed for dark off-road riding?

I think 30 lux is the minimum for dark road (including good gravel road) riding, so proper off-road would need more than that. I guess at least 80 lux. Your eyes may vary.

Lumens are nonsense. Lumens still count even when they're being fired into space or onto black plastic. The StVZO measure of lux on the road a set distance ahead (I think it's 10m) is as good as it gets for measurement for now.

As far as I know, many e-bike lights (including some Axa ones) are basically modified 6V dynamo lights. Some accept a wider range of steady voltages and some come with wires that end in little rectangular 2-pin sockets that I guess are some common e-bike system connector, instead of the spade connectors or loose wire terminals more often seen on dynamo systems. I've wired one onto a dynamo bike before.

 

[Dadam]

Does the bike currently have lights? Are they specific can-bus controlled or simple voltage switch?

If they controller just sends 12 volts or even 5 volts you can wire off the battery terminals, with a fuse to protect the battery if the add-on circuit has a fault. Use a relay to switch the higher battery voltage.

Yes as per post #1 it has a rear light. I have no idea how it's wired. The bike is still under warranty (I think, must check) and is showing a service indicator on the display, so am not going digging into its guts right now.

I'm also not intending to be soldering together bodged circuits at any time. The last time I tried that first I gave myself quite a jolt with a cap, then shortly afterwards burnt my thumb quite badly on the soldering iron! I went to pick it up and just that moment the weight of the cable made it slide back just enough so my poor digits closed around the hot bit! After much swearing I binned it all. I decided the universe was trying to tell me something. As Clint Eastwood said in Magnum Force, "a man's got to know his limitations!"