Spyro
Well-Known Member
This may be a silly question but I don't know the answer so could someone explain. We always see shaft anodes fitted outside the hull in the water, why don't we fit them on the shaft inside?
Shaft anode
- Thread starter Spyro
- Start date
Sandyman
Well-Known Member
I do but not to act as an anode but to stop the shaft falling out.
KenMcCulloch
Well-Known Member
Because the water acts as an electrolyte?
Sandyman
Well-Known Member
It would not serve on the inside. It has to be in the electrolyte which the oggin is.
sailorman
Well-Known Member
coz there woudnt be any water around them
Sandyman
Well-Known Member
Snap /forums/images/graemlins/grin.gif
shmoo
Well-Known Member
Hmmm, because they wouldn't be in the water?
They work at all becuase the water is an electrolyte and there is set up a cell that puts a voltage on the prop (I forget which polarity) Without the anode there would still be a cell set up but of opposite polarity - that is with with the prop as the anode. Its the anode that gets eaten away in a cell.
Out of the water the anode would be a lump of zinc, not an anode.
They work at all becuase the water is an electrolyte and there is set up a cell that puts a voltage on the prop (I forget which polarity) Without the anode there would still be a cell set up but of opposite polarity - that is with with the prop as the anode. Its the anode that gets eaten away in a cell.
Out of the water the anode would be a lump of zinc, not an anode.