Echo F7 Computer

I've fitted an Echo F7 bicycle computer to the Honda. The magnet provided wasn't unsuitable so I pulled apart an old set of headphones and extracted the magnet. There was no way that I could attach the magnet to the brake disk - there just wasn't enough room between the disk and the fork. My solution was to glue the magnet into the gap of one of the slots in the disk.This has the advantage of being hidden and not being able to obstruct anything.

The sensor has two sensitive positions, one at the top and one at the bottom. I used the lower point as I couldn't get the sensor any lower because of the brake attachment points on the fork

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Having the magnet higher than the bolts that secure the disc to the hub means that the bolts can't produce any spurious signals if I'd mounted the magnet lower.

I was warned that the lead between the sensor and the cradle would be too short and sure enough it is. For the moment the existing lead will do until I get around to extending the cable. I had to mount the sensor upside down as the strap got in the way of the pad assembly. This caused me to lose a few valuable centimetres of lead - what a shame. If it wasn't for that I wouldn't have had to extend the cable. (I was under the impression the cable was microphone cable, a shield surrounding an active wire, but I discovered an unshielded pair. No problems. I bought some shielded cable the same diameter as the original cable and soldered in a length using heat shrink to weather proof the joint areas. Instead of using cable ties I wound the cable around the brake hose and on up the the handlebars. I only used one cable tie - right at the bottom.)

The display end of the computer is in two parts: The Cradle and the Computer. The computer slides/snaps into place and can be easily removed. The mounting strap for the cradle was more than adequate in length so all in all I didn't have to modify anything apart from providing a new magnet.