On 2017-05-04, Jim Wilkins wrote:
"DoN. Nichols" wrote in message
...
On 2017-05-03, wrote:

BMC owners always have fun tales to tell. I'll bet Don has some
from
his MGA experience.

...When I
rebuilt it, using a short coil of 16 Ga wire as a shunt (it wasn't
calibrated, anyway -- just a rough reading of load with and without
headlights and heater fan.) I added a Plexiglass shield to prevent
a
repeat of the short.
...

Constantan wire for stable current shunts can be salvaged from type J,
T and E thermocouples.

Given the fact that the indicator I used was the vertical needle
on an aircraft instrument landing cross-needle indicator, with no real
calibrated scale, I wasn't that worried about stability. about 8" of 16
Ga tinned stranded copper wire was sufficient for my purposes. :-)
Reasonable deflection at normal loads.

But I will remember that for future use. Thanks.

Enjoy,
DoN.

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