Monday, 19 October 2015

Dusky Jaunt

Well, a little jaunt around North Norfolk yesterday evening left me thinking about my lights, as the nights are drawing ever inward.

The Lucas C35SD dynamo, in standard condition and running 6V into a modern V-Reg regulator rectifier charges the batteries at anything over idling. However, put the main beam on and you have to get to about 40 mph to get it to balance, and this is only running a 35W/35W BPF headlamp as it would have been in 1951, with a 5/21W stop tail - all old-fashioned tungsten bulbs.


In addition to this it has the 3W BA9 pilot light and the 2.4W BA9 light in the speedo.

I think some upgrades are in order. Here's my list:
  • 35W/35W QH BPF headlamp - B635BPFQH is the one I have in mind, from Paul Goff
  • LED tail lamp - I'll use the LD6RST 
  • LED pilot lamp - Paul's LDBA9DWneg is the one here, drawing 1.5W, or LDT10DWH6V depending on which is brighter
  • LED speedo lamp - again LDBA9DWneg is the one
as a minimum. And then maybe, because this is getting expensive, I will add:
  • LED indicators
  • LED indicator relay
I'm toying with the idea of replacing the cheapo repro Lucas 529 rear light, which I fitted as it is much larger and more visible than the original Lucas 480, with a better one from Paul Goff.

I have to make sure that the bike is (if I recall correctly) wired negative earth (which it is - I went and looked at the battery) - the regulator certainly is - because LEDs are polarity sensitive. I'll maybe look into the bright daytime running lights Paul sells as well, since I have two positions for pilot lights.

I also discovered, by the way, that you can ground the side stand on cornering!


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