[KOML] Film wind mechanism

[Clive Warren <Clive.Warren>]

After some research I have answered my own question re. the changing film
advance stroke as you munch your way through film.  Here is the info. for
those of you who were going to check it it out:

Film advance plunger stroke:

1st to 3rd exposures ..........76.5  + or - 0.2mm
4th to 6th exposures ..........70.0  + or - 0.2mm
7th to 10th exposures .........61.8  + or - 0.2mm


To answer another question raised re. a stiff advance plunger, the friction
force should be less than 3.5kg.  Lubricate rack and pinion with Helicoid
(FP) grease.


The problem with my film advance mechanism is that the third cam lobe for
7th to 10th exposures is not engaging with the stop.  I hope that this is
just a spring problem rather than a broken cam.  Hope to have it sorted by
the weekend though.....



All the best,

              Clive   http://clive.bel-epa.com