Originally Posted by Don in Austin
I haven't found a way to route the Magicshine battery lead where using the headlight doesn't eventually knock out my Sigma's readings. Has anyone tried shielding the Magicshine battery cable?
Don in Austin
I have a Sigma Rox 9.0 and several Magicshines. I've tried shielding and multiple positions. The main issue for me is losing cadence as this transmitter is furthest away from the Sigma computer. One method for eliminating interference is to coil the wire around the handlebar three times outboard of the light. Although this helps, I eventually lose cadence as the battery increases current with declining voltage.
Ultimately, the best solution for me is to run the single cell Magicshine flashlight on the handlebars. This causes no interference. I then attach the four cell light to a Bell Sweep helmet and use the extension cable down to a battery kept in a bike jersey rear pocket. This particular helmet works perfectly as no extra mounting hardware is required.
This solution has the added benefit of allowing you to read the computer without turning on the back lighting.