A while back I posted about an issue I was having with my "new" Leica IIIg:
During my first test-roll, about 10 exposures in, when winding-on for the next frame, I felt something slipping / catching in the advance knob, and noticed that the rewind-knob was no longer advancing (film not being drawn from the cassette)
I played with the camera a bit, advancing and firing, and sometimes more film would pull from the cassette, and other times not.
The shutter would wind and fire each time though.
I got disgusted with it and put it aside for a long time. Months.
Last week, I got my Barnack bag out, and had another look.
No improvement on "wind & fire", so figuring the roll was a lost cause, I removed the lens, and looking through the mount, shutter set on "T", I tried a few "fire & winds", and the film seemed as though it would advance for a couple shots, then not.
Finally, I removed the bottom plate, and had a look inside.
I noticed that the exposed film was not coiling snugly around the take-up spool, and that as slack developed, was possibly pushing the film out of secure contact with the sprockets.
So, I pulled the take-up spool and film casette out, in mid-roll.
I unwound the film from the take-up spool, to be sure the leader was firmly caught under the spring tongue ( it was ), and then I un-hitched it.
The spool "looked kind of funny", high-gloss black paint (old), the spring tab is non-Leica, and there are no markings on the spool.
The spool from my IIIc/f BDST is more matte black, is stamped "Germany" on the outer flange, and has the pop-out knob. I'm pretty sure it is a Leitz spool.
I am wondering if the spool that came with my IIIg is non-Leica, possibly FSU(?), is a sloppy fit on the winding stem, and this may be causing the film not to spool snugly on the take-up spool ?
Did the IIIg use a new / different spool ? Will a spool from an older Barnack work ? Has anyone had this experience with a IIIg / other Barnack
Sorry this is all words and no pictures...
will try to add some later...
If my wind-on problem can be cured by something as simple is getting a proper Leitz spool in there, I will be a happy man....
Thanks in advance...