YashicaMat shutter reassembly reality/sanity check please!

[rs1]

Hello All,<br>

<p>Thanks to the invaluable help and guidance of forum members, I have

managed to clean up the shutter on my wounded YashicaMat and put the

thing back together again. The question I have is, when I put that

shutter speed/aperture dial housing front panel thing, don't know the

right term for that part, but it is the last part that goes on when

reassembling. Anyway, as I put it back, I made sure that the shutter

speed was at 1 sec and the aperture was at f22 (on the shutter

assembly) and then I set the dials on the panel to those settings. I

noticed however, that if I moved the aperture lever on the shutter

assembly all the way to its smallest opening, the bracket on the front

panel was not engaging the lever on the shutter assembly (the lever

was a little bit out of reach for the bracket). I had to move the

lever a little bit until the bracket was able to catch it. So the

aperture is not at its smallest possible opening, rather the front

panel dial position is kind of what is dictating the position of the

aperture control lever on the shutter assembly. When it's all

assembled, if I turn the dial to f3.5 it looks right, no aperture

blades visible. If I put it to f22, I know that the aperture could be

slightly smaller than what I see because the aperture control lever

has a little more room to move. Is this the way it is or have I messed

up AGAIN? </p>

<p>I know the best way to test it is with film and I have loaded it up

right now but I am thinking a little sanity check is not a bad thing.</p>

 

<br>

Thanks for all your help and I hope this post actually makes some

sense to the TLR experts.

[kymtman]

That is the designed tolerance. F/22 may be what it is. if the shutter itself closed more it may be f/32 who knows. don't worry about it. The dial is supposed to control. If at 3.5 no blades are seen you are ok

[winfried_buechsenschuetz1]

I totally agree. I have seen many aperture subassemblies but none of these was adjustable. In other words, they should work OK when the widest aperture is OK. Maybe this bit of misalignment is due to mechanical tolerances but that is no reason to worry about.

[Guest]

I'd like to help but sanity is not something I'm familiar with.

[kymtman]

Gene you say the darnest things. You think it might be the cold weather and you will be alright when spring breaks?

[dean_williams]

It's OK Rajiv. The lens surround (the front part you are talking about) controls the aperture, and it is correct at f22 when the number in the shutter speed/aperture setting window says 22. The aperture on many leaf shutters will close down to lower than the shutter is specified for. That is why you see a smaller hole if you push the aperture lever to it's limit. You're doing it right.

<p>

Dean

<p>

<a href="http://www.deansofidaho.com">deansofidaho.com</a>

[rs1]

Thanks for the answers y'all! I guess I feexed heem...until he locks up again ;-)

[Rob_the_waste]

Enough of the chit chat Raj. Put the Yashicamat to work, and let's see what you've got.

[rs1]

I am on the case. Will post the results after I develop that roll... :-)