Franka Solida Shutter Working at one speed

[MineSix66]

Ok, I got the shutter working but it is only at one speed. The B setting won't stay open when I have the shutter lever pressed down. Any Ideas?

 

[MineSix66]

Just an update, i cleaned the shutter again, the only speed that isn’t working is the bulb speed. The shutter won’t stay open when button is pressed down

 

[KoNickon]

If the shutter was not working at all when you started, and now only B isn't working, I would say you've done well. How often will you even use B?

What is the shutter on this camera? In my limited experience, the Compurs (especially Synchro-Compurs) are more complicated (and thus harder to fix) than Prontors.

 

[MineSix66]

If the shutter was not working at all when you started, and now only B isn't working, I would say you've done well. How often will you even use B?

What is the shutter on this camera? In my limited experience, the Compurs (especially Synchro-Compurs) are more complicated (and thus harder to fix) than Prontors.

prontor svs

 

[KoNickon]

So, a good shutter. Others may have specific advice on how to fix this issue. I assume you saw this -- general instructions: Camera Collecting and Restoration

 

[MineSix66]

So, a good shutter. Others may have specific advice on how to fix this issue. I assume you saw this -- general instructions: Camera Collecting and Restoration

I hope so, I have another shutter with the same problem

 

[raydm6]

I wonder what ever happened to Brett - @Sarcophilus Harrisii. He was good with camera repair insight.

He hasn't posted since January '23. I hope all is ok.

 

[dxq.canada]

With a Prontor type shutter the bulb lever tab sits in a groove on the speed cam that is closest the shutter release lever in the below image.
When in B mode the lever is sitting in the larger opening, so the lever can travel upwards ... so I am guessing that this is not moving properly

 

[raid]

I regret selling a Franka IIIe with RF and very clean lens. I used it with one roll of film in the Great Smoky Mountains. The results were sharp and contrasty.

 

[JeffS7444]

Just an update, i cleaned the shutter again, the only speed that isn’t working is the bulb speed. The shutter won’t stay open when button is pressed down

Chances are, the tip of some metal lever got bent slightly during disassembly, and it was a critical part for the correct operation of "B". But not to worry, this is exactly how the factory calibrated the things in the first place - by bending. But in order to figure out exactly what needs adjusting, you may need to stare at the workings of the shutter for awhile. Sometimes I've had to step away from the things for several days before figuring it out, but when I did, it was pretty clear there was only one specific area which needed adjusting, and a 0.5 mm adjustment is easily the difference between correct operation and flakiness. But be very careful when working with any metal pins which engage with the speed plate, because those can sometimes break off, and the fix can be a royal pain.

 

[KoNickon]

With a Prontor type shutter the bulb lever tab sits in a groove on the speed cam that is closest the shutter release lever in the below image.
When in B mode the lever is sitting in the larger opening, so the lever can travel upwards ... so I am guessing that this is not moving properly

I'm not sure where I should be looking -- which is the shutter release lever (where on the "clock face," as it were)?

 

[dxq.canada]

The bulb lever tab rides in this grove.
When the cam is set to B, the tab sits in the large lower opening and is allowed to move towards the outside of the shutter.
If it is not moving then the release lever will fail to keep the shutter open for the duration it is pressed.

 

[dxq.canada]

Should look like this under the speed cam ... green circle is the bulb lever tab
Shutter release lever is red arrow

 

[MineSix66]

I finally got back to this thread. The bulb setting still isn't working properly, do you see anything ?

 

[dxq.canada]

I am assuming the speed cam is set in the B speed.
If you trip the shutter is there any movement in this area
I would guess that post would move outward.

 

[MineSix66]

The two posts circled in yellow didn't move when I tripped the shutter in B mode. Does the lever? circled in red have something to do with it?

 

[MineSix66]

I think it has something to do with the post near the lens area. I did move it as I pressed the shutter lever and the shutter stays open. Here is a close up shot. Maybe a spring is off?

 

[dxq.canada]

I think the end of this spring is not in the right place ... as I guess that this spring is not putting enough tension to pull the arm up.

 

[dxq.canada]

Or, that large screw was removed at some point in the past and was put back incorrectly so now that spring is not moving freely?

 

[MineSix66]

Spring moves freely I am trying to figure out how to place it.