ROLLEIFLEX T 3.5/75 Zeiss Tessar Film Advanced broken

Hi,

I am looking for some help with my beloved ROLLEIFLEX T. I broke the film advanced by recklessly/forcefully winding up film that wasn't properly inserted.

I am still struggling to fully understand on how the film advance mechanism works on my particular model. However. I can say that the transmission from wheel A to wheel D works. What doesn't work is the transmission from C (where the lever will be attache too) to A.

You can see in the picture that B is small metal block that probably has to slide into wheel A's inside mechanism to transfer the force. There are two things I don't understand though.

1) Is this done only by gravity? (e.g. is slides in then pointing down and stays for 180 degrees until its slides down again? I

2) As you can see the small metal block B has chipped corners. Now I'm not sure if it should be like this and how this benefits or causes the issues that I have with he force from C to A not transmitting.

My Question is: How is the mechanism really intended to work and if I already understood that right, what options do I have to fix my problem?

Any help is highly appreciated. I am really attached to this camera and it is in very good condition otherwise.
Thanks

See if this video will help...

Film advance problem in Rolleiflex Tessar 1:3.5 f=75mm

Thanks! I've seen this but his model has a different locking mechanism at this part.

Not to be insulting but somehow I don't think it is different. Perhaps you disassembled it differently than in the video.

In an event, I can be of no more help in this matter! Sorry.

No, didn't take it as an insult. Unfortunately the crucial part is different in my build (maybe an older or never version). They seem to have used a different locking mechanism. Appreciate your help though!

I see what you mean. You are probably right that the parts used changed between the examples, but are from the same model camera.

If I had to guess, the metal bar appears to be part of the ratcheting mechanism and the beveled portion of the bar has to be placed in the slot so that when you turn the winding lever backwards, it does not drive the gear, but slips over the teeth.

EDIT: OR, this bevel is the place where a wedge from the winding lever descends into the gap of the bevel and pushes the bar backward to engage the bar to the drive gear.

For the life of me, however, I cannot see how the bar would be positively engaged to drive the winder forward, unless there is something missing on the underside of the cap that fits over the winding shaft that protrudes down to press the bar forward to engage the ratchet mechanism.

Do you have a photo of the back side of the camera body plate?

I hope no parts fell down into the body of the camera itself.

Have you tried gently shaking the camera to see if anything rattles? I would do this over a high-sided tub or container to catch any possible parts that might fall out and be mindful of obviously loose parts to begin with!

In any event, there is a user on here named Shutterfinger who is knowledgeable about these cameras, but who lives on the West Coast of the USA and might not see this until about 6 hours later (depending on if when/if he finds the thread), who can probably give you much better advice.

Maybe you can PM him and see if he can help.

I can only offer wild guesses, which irritate him to no end!

I don't know how the small plate actually operates but that is definitely the part that transfers the movement of the wind lever to the mechanism. In the below diagram you can see it has two teeth on it (part 21) which yours seems to be missing so I guess that's your problem. Only way to fix it will be to find a replacement part but note that not all 'T's are the same. I have a diagram for a 'T' that shows a completely different mechanism.

So I think I figured how it's supposed to work. Part B moves freely in its slot in part C. Part A has an odd number of teeth so at any one time, there will be a tooth at one end of part B and a slot (between teeth) at the other end. Part B gets pushed by the tooth into the slot where it will lock and pull part A around while you crank the handle. If you turn the handle backwards, part B moves back and forth as each tooth passes allowing it to turn within part A without catching. Pretty simple mechanism really.