It is going to take more than 1 resistor. Probably at least 6. G-[ Parent ]
Assuming I can knock up a rough wooden frame to separate the loops of wire I should be able to at least get as far as finding out how the wire behaves this coming weekend.
I've got about 1200m of soft iron "number eight" wire to wind up from a redundant fence in the next couple of weeks so I'll try measuring that as well (although I don't expect it to be consistent as its old and rusty in places where the galv has gone) Robin - Down Under (or are you Up Over)[ Parent ]
Using a timber frame (a couple of cross pieces at each end with 4 lengths of 2 by 1 between) I've made an air spaced coil of 30 turns with a diameter of 0.5m. This is 1m high (so not too unwieldy but big enough to dissipate a fair amount of heat I reckon!). I didn't check the length of wire before I wound it on but it should be about 47m. If its still light when I get home tomorrow I'll try for a picture of it (not that its anything to look at!).
The measured resistance of the whole thing is 1.88 ohms so the fence wire comes out at approximately 25m per ohm.
When I drop the mill in a few weeks, to put it on the permanent mast, I'll run it up on the tractor PTO into this wire wound resistor to see what occurs :-) Robin - Down Under (or are you Up Over)[ Parent ]
