04-10-2018, 09:20 AM
Am attempting rebuild of late C35A dynamo that previous owner stripped down and left in a box of bits. I have no idea what he butchered/snipped. (Bear in mind that I don't really do electrickery. My understanding is limited to: Thing works=Good. Thing doesn't work=Bad. Thing smokes and catches fire=Very Bad).
I have just fettled a less deconstructed C35M (following the Cornwall A7 club notes on testing etc) and it's now working fine - but the connections are a little less obvious on the A.
I appear to have two wires from the field coils , the red one (ignore that it is poking out of the casing) and and bare one - there is continuity between them.
P1100117.JPG (Size: 120.87 KB / Downloads: 337)
I know that one brush is to earth and I have identified which one it is. The other brush presumably has a wire from it to the POS/D external terminal. Then the smaller, moveable, third brush is connected to the field coils and then to the F2 external terminal.
P1100118.JPG (Size: 115.75 KB / Downloads: 333)
But I have two wires from the coils, the red and the bare. Which goes where?
I need to get hold of a few small bits - a brush spring, the two screws that hold the shoe plates in place between the coils, a woodruff key for the drive end, and a spring to hold the end cap in place. Any ideas where they might be obtainable?
P1100119.JPG (Size: 87.14 KB / Downloads: 331)
I have just fettled a less deconstructed C35M (following the Cornwall A7 club notes on testing etc) and it's now working fine - but the connections are a little less obvious on the A.
I appear to have two wires from the field coils , the red one (ignore that it is poking out of the casing) and and bare one - there is continuity between them.
P1100117.JPG (Size: 120.87 KB / Downloads: 337)
I know that one brush is to earth and I have identified which one it is. The other brush presumably has a wire from it to the POS/D external terminal. Then the smaller, moveable, third brush is connected to the field coils and then to the F2 external terminal.
P1100118.JPG (Size: 115.75 KB / Downloads: 333)
But I have two wires from the coils, the red and the bare. Which goes where?
I need to get hold of a few small bits - a brush spring, the two screws that hold the shoe plates in place between the coils, a woodruff key for the drive end, and a spring to hold the end cap in place. Any ideas where they might be obtainable?
P1100119.JPG (Size: 87.14 KB / Downloads: 331)