The OM takeup spool is on a clutch, it is supposed to slip a certain amount.
This is because, as the the spool fills up with film and its diameter
changes it has to turn less, to takeup the same amount of film. With age
and as the clutch fails, it slips too much and allows the film to bunch up
on the takeup side. Film slips over the sprocket teeth, is not advanced
afull frame, and you get overlapping.
This may be the problem with your camera.
John
________________________________
Camtech, Olympus Service since 1977.
21 South La. Huntington NY 11743-4714
631-424-2121 http://www.zuiko.com
Free Olympus Manuals: 1-800-221-3000
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----- Original Message -----
From: Dogbreath <hopi@xxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Sunday, January 30, 2000 2:14 PM
Subject: [OM] Film advance woes with OM-1n: Please help
> Hi.
>
> I have an OM-1n which will, it appears, sometimes fail to advance the film
> properly. On a roll of 36 exposures, I will often have two or three
> exposures occupying one and half frames. I first suspected the rewind
knob,
> but it seems to stay put and will only release when properly turned. Next
I
> suspected the advancing spool, just to the right of the aperture (when
> facing the open camera back). However, when I loaded a dummy roll and
> watched the film advance as I wound and fired the camera, the advance
spool
> seemed to be working reliably. Lastly, I suspected that somehow the film
> was not engaging the advance spool properly, perhaps 'cause the pressure
> plate wasn't exerting adequate pressure or perhaps 'cause the wound film
> was sitting loosely enough on the take up spool that its diameter was
large
> enough to, in effect, guide the film up and over the registration pins of
> the take up spool. Again, though, winding film through the camera while
> watching with the back open hasn't really born any of these ideas out,
with
> the exception of the pressure plate, which, obviously, can't be tested
this
> way. The pressure plate looks to be sitting at the right height and feels
> as springy as ever.
>
> Please tell me what you, OM-1 owners out there, have done when faced with
this.
>
> Thanks!
>
> DB
>
>
>
>
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