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 Re: Nikon 400MM TC 2.8 Tripod Collar Drift Anyone? | |
My 500 PF had drift when I first got it way back when it was first released. In fact, I had my 500 PF a week or so before it was supposed to be released.  If I recall correctly, there was a delay or recall or something at the time and I wonder if this was the issue. Anyway, I ended up fixing mine myself.
I undid the knurled clamp knob of the tripod collar and removed it completely and underneath was supposed to be a plastic/Mylar (polyester film) disc (from memory!) that was either too small for the job, or was damaged, or (might have even been missing but found out later it was supposed to be there) to which I replaced with a larger piece I made myself. That fixed it and has been great ever since. When removing the knurled clamp knob, there is a tiny grub screw that keeps the Knurled knob from coming loose if you undo it too far. Make sure you remove this also.
I have been trying to find my posts regarding this but have had no success. If I find it I will check it out to see what I actually did.
PS:
Found a post on DPR about the issue of the knob. It looks as though I didn't use a home made remedy but got a replacement part that was a new design compared to the original one that came with the lens. This makes me think that this was the reason for the delay in the 5000 PF release:
"I went to Nikon and ordered the replacement parts and received them within a week and I fixed it myself! All good now and that was quite a while ago now. I think the issue is with a small nylon pad that is on the end of the knob and the pad is what causes friction to the barrel when you tighten the knob. I think the original nylon pad was too small to cause enough friction to stop the collar from turning, but the new knob has a larger (thicker and bigger in circumference) nylon pad and thus grips better. At least, that is how it was with my replacement compared to the original."
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