Again, for the Walker log experts

A couple of questions :
Are all walker log spinners the same ? I have a IIIa KDO and need a spare, see them on Ebay.
Should one lightly beeswax the line? someone told me this as they did it to combat swelling and friction.
 
Walker Log

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In reply to Roger above (and anyone else who is interested), the rotators can be metal OR the later models are of metal/plastic combination.
The attached image is of the three logs I have here(don't ask:))
The one on the left, a KDO Mk. IIIA, I use on the boat, and that is why the mounting plates are not present.The rotators are all metal.
The centre one, also a KDO Mk.IIIA, is unused, and appears to be a late model with rotators of metal and plastic (the blades are definitely all plastic), and the sinkers are of a different design to the older ones.
The last one is a KDS MKIIIa, unused, and has all metal rotators. This model has a cable feed for an analogue speed indicator (which I have also got:))

The last two pics. are of the rotators, and all appear to have the same pitch. The plastic/metal one is shorter than the others, and being lighter in construction actually has a ballast weight inside,the end of which you can see, which is probably to keep it in the water.
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I doubt that Walker's made rotators of a different pitch over a long production run of the same model, as ordering the correct replacement would have been very difficult.
I would think that the ebay offerings are 'standard', and if stated to be for the Mk IIIA are probably correct (even for the MkIII - and I confess I don't know the difference between the models)
Michael.
 
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It takes a certain amount of energy to maintain the torque required to keep the twist in the line. The rest is converted to rotation. Longer line more energy lost to the line hence slower rotation.
 
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