Preparing and Fitting the Edelux II Headlamp

Having unboxed and inspected the new lamp it is time to prepare it for fitting to Rose, my trusty Thorn touring bike. First, I used the old wiring harness from the original headlamp as a template to cut the new cable to size:

The new lamp cable cut to the same length as the old one.

Next, I stripped away a few centimetres of the cable sheathing to expose the two inner conductors:

The conductors after the cable sheathing has been stripped away.

Because these two conductors will be close to the road surface at the centre of the wheel hub they will need protecting with some heatshrink tubing that is supplied with the new headlamp. I use an electric heat gun to do the shrinking. It is like a hairdryer… but much much hotter!

The hot air gun ready for action.

After cutting the heatshrink tubing to the correct length, make sure to use a suitable tool for holding the work while heat is applied. Remember, the air from the gun is very hot and it only takes a few seconds to complete the task.

The first heatshrink piece cut and ready for heating.

Here is how it looks after shrinking down:

The protected conductor cooling down.

Once cooled, another piece of heatshrink tubing is applied at the point where the two conductors enter the cable sheathing.

Extra protection for the conductors.

Now the conductors are ready to have the crimp connectors fitted. It is easy to fit them with a small pair of long-nose pliers.

The crimp terminals fitted ready to attach to the hub generator.

As you can see, the crimps each have two sets of tabs. One set of tabs is bent over the copper conductor to create the electrical connection. The second set of tabs wrap around the insulation to add mechanical strength to the connection.

Preparing the crimp connectors to survive the open road.

Time to add more heatshrink tubing, this time to protect the crimp connectors from damage.

Ready for the road!

The electrical connections are now prepared. We can now fit the headlamp to the bike…

Rose has her new headlamp.

The new headlamp has been fitted. As you can see, I had to replace the mounting bracket as well as the headlamp.

Wired up and ready to power the headlamp.

The crimp connectors take their place on the hub generator ready to supply power when needed.

The cable is secure against the front fork.

The cable runs up the front fork as before and is held securely in place to prevent it fouling the brakes.

Ready once more for the daily commute.

Rose is now ready for the next commute although it looks like she could do with a bath (the riverside path that forms part of my commute has been quite muddy recently). You can also see the rechargeable headlamp on the top of the handlebar that provides extra lighting and some redundancy if one lighting system should fail (I also run two tail lamps for the same reason).

Rose has a broken headlamp

Poor Rose. Years of cycle commuting has taken its toll and her hub-powered headlamp has fallen to pieces.

Disaster strikes! Rose has lost her headlamp.

I have chosen to replace the headlamp with a Schmidt Edelux II LED light from St John’s Street Cycles.

The new lamp has arrived.

I like the simplicity of packaging. It suggests that all the effort has gone in to designing the light, not the box it comes in.

The box contents at first glance.

The new headlamp is unveiled. What else has come with it?

Everything is supplied to complete the replacement.

That’s everything needed to complete the replacement. The extra coiled cable is for running to the rear of the bike to power a tail light. However, Rose has two large Cateye LED lamps powered by batteries that help keep us visible at night.

As you can see, the lamp supplied is the version with the 140cm cable which will need to be cut to length and prepared for fitting to the front fork. More on this in another post…