Originally posted by K50lives That's possible - there's a lot to read there. The impression I got though was that a single reason for the failure hadn't been nailed down.
No, we never spoke of a single reason but of many, as it was stated also many times.
Originally posted by K50lives Is it wear/binding or excess magnetic holding?
- too strong magnetic force
- cheap PET material for the body, which wears
- possibly different material for the plunger
Originally posted by K50lives This is why I decided to do my own experiment - I hope given your own leanings toward a scientific method you can respect that decision ;-)
well, that is never the question, of course anybody is free to do his or her own experiment.
"When you know what you're doing, you can do what you want."
But of course to know one has to experiment.
There is nothing wrong with this as long as one doesn't harm others! That is the crucial point always.
And that is what I am after:
One should only give advice if it is founded on true experience and not if on guesswork.
Originally posted by K50lives I don't fear that removing the plunger once will cause a problematic change in residual magnetism that is designed into the system.
Who said it will?
Originally posted by K50lives In my mind that possibility doesn't fit with a stable component design. There appeared to be no noticeable residual magnetism in my plunger. I don't expect the minimal amount of sanding/filing I did would cause any problems either in this regard
You see, here we go where it can be misleading.
ANY solenoid plunger will have a noticeable residual magnetism.
It is just that you cannot notice it. That is a major difference!
The minimal sanding will change the way the plunger moves in the PET body.
It has that minimal less guidance.
And... it has led in the past to further damage.
You see, it is not a question of "what you expect or don't expect" but a question what people who have done research have found out.
Expectation does only help if one has done a certain amount of reasearch but not if one has worked a very first time with a solenoid.
Originally posted by K50lives I will keep an eye out for a donor MZ camera in case it is needed.
Then make sure it is polarised the right way, most solenoids of MZ cameras have had opposite polarisation.
Also I have made some measurements with those: They differ slighty from the solenoids in the *ist, K100D etc.
Better to get one of those as a donor.