I have recently been trying to practice loading film into a super 16mm modified krasnogorsk k3 and am coming up against some odd problems.
Firstly I was not the one who performed the modification and the loop formers are removed. From what I understand this is to stop the film from getting scratched.
When loading the film and feeding it through everything seems to be fine at first and I run off a good few feet to make sure it is going through okay. But then once the lid goes on and I press the trigger the film immediately jams. Here is a video of the issue.
The takeup spool did seem to be dragging on the film but as there was no audio it was hard to tell.
Looking closely, the bottom guide isn't correctly set so the film is running off the teeth. It should just overlap the lip of the sprocket. I'd suspect the top one as well as both loops are lost.
However I've checked mine and the lid will shut with the guide open so it's a separate problem
Thank you for your post. Yes as you noticed the plunger has also been removed and doesn't seem to get in the way. I am trying to shorten my loops as per your suggestion. I am not 100% sure what you mean by 'the bottom guide is not correctly set' could you elaborate slightly so I understand how to make sure the film is properly engaged with the teeth.
I think I will post another video of the film going through the camera at 8fps so you can get a more accurate look at what is happening.
The lid may be getting in the way but it is tough to see how.
Here are a couple of new videos getting a better look at what is happening when the film is fed through. The third one shows me placing the lid on without closing it and it continues to go through fine until I close it with the latch, then it jams.
Also just note I am using stock that has been run through the camera previously so you may see some damage to the sprocket holes as it runs through.
The top loop has collapsed again so I wonder if the top runner is out of adjustment. The film is jumping the sprocket there
Does the latch inside the door look OK? It should be a flat rotating plate with the latch slot in the middle. I wonder if it could be catching on the runner althoug I don't see how that would affect the film run.
As John said, is the door warped? The only way I can replicate this fault is by immobilising the feed spool. There is a collar on the lid which covers the spindle when the lid is on. Could it be catching?