"(PeteCresswell)" wrote in message
...
Any such thing?

I'll have a little bridge rectifier and voltage regulator serving
a bicycle hub alternator (6v 4w) and want to use the bike frame
as the heat sink.

My thought was that, if there's such a thing as heat-conductive
putty, I'd just embed the two components in some of it and stick
it to a frame tube.

**Do you need heat sinking? 4 Watts is not much power. You could use a 6 Amp
bridge, which can dissipate quite a bit of power, before requiring any heat
sink. If you do need it, then use silicon glue (the stuff used for
guttering, kitchens, bathrooms, etc). It remains flexible and will transfer
reasonable heat to the frame. I seriously doubt that you need it though.

Trevor Wilson