Just wondering if the Shimano Di2 wires have sufficient capacity to cope with a dynamo power output at say 60mph which is realistically the highest speed I'd get to on my push bike?
There's a couple of reasons why I'm thinking of using these cables and why I'm not looking at alternatives at the moment.
Ive not seen anything that notes the gauge of e-tube wire, images of people using it for home-made switches shows its pretty light. How much current it would cope with though I doubt very much anyone (other than shimano) has tested.
A dynamo hub doesn't kick out that much power - I'd be extremely surprised if you started melting the cables. Sounds like an expensive way of doing it unless you already have the Di2 wires lying about.
Id be interested to hear the intended use. Might be good connector for quick swapping of lights or paralleling in a charging system. Currently trying to find a neat solution to that myself (basic choc-bloc looks a bit crap).
If you know the gauge of wine that is used in di2 cables you can figure out its current carrying capacity and cross reference that against the output of your dynamo.