Yashica Electro 35, question fro owners?

<p>I'm rebuilding Electro 35 GS. Long story. Everything came apart, even shutter.<br>

Question about the way shutter works. Without battery, does it open fully?<br>

In my case, if solenoid is activated then shutter properly lock wide open and then released by deactivating solenoid. However, without battery, it looks like it is starting to close before fully open. It gets probably to 80-90% open. There still some teeth visible on the aperture periphery, forming fat star. I do not believe that this will affect image in any way. But I'm really curious if this is the normal shutter behavior without battery.<br>

<strong>Can somebody please test it and confirm?</strong><br>

<br />By the way, I read many posts about sticky Copal shutters and most recommend to flood it with naphtha. Not the case, at least in my case, every single shutter and aperture blade was dry and clean. But chain of levers, from winding shaft and trigger all the way to solenoid, was slow. Does not appear to be dirty or gummy. I guess oxidation on the shafts. Anyway, after taking it apart, cleaning inner barrels of levers, everything appeared to become snappy, much better than before. So, scrutinizing shutter I have discovered that it does not open fully without active solenoid. Makes sense as there is no timing mechanism, just inertia of levers and blades dictates max possible speed. I just want to confirm that it is true and I do not make some stupid mistake before putting whole thing together and soldering back hundred of wires. (They don't build it like this anymore and this is a good thing!)<br>

I did not use any oil on the levers on anywhere else as this most likely will limit max shutter speed. Shutter reassembled completely dry.<br>

Thank you so much for any help!</p>

<p> </p>

<p><a href="/photodb/user?user_id=195375">Winfried Buechsenschuetz</a> has(d) a Yashica Electro collection, and he may come along and help you.</p>

<p>I have one, and found it to be a nice example of the heyday of really sharp and modestly priced RF cameras of its period. I paid $6.01 for mine (<a href="/classic-cameras-forum/00WQDe">link</a>). <br>

Mine was sort of working out of the parcel, though, so I'm no help on your questions. Sorry.</p>

<p>I do not know whether I ever looked through the shutter when firing without battery but you find pretty often the information that the shutter runs at approx. 1/500 sec without battery. The solenoid does not help the shutter to open, just to STAY open. 1/500 sec is not clearly visible with the naked eye when watching the shutter blades from one side only, the movement is hardly visible but the shutter should open completely.</p>

<p><a href="/photodb/user?user_id=195375">Winfried,</a><br>

Thanks! I know that shutter is not assisted by solenoid, just held open. Question is when shutter started to close without solenoid. I do not see interlock that would guarantee fully open shutter without solenoid. Just want to confirm that others see the same or if I have to dig more.</p>

<p>I'm trying to post long exposure of my shutter just to show how far it opens. Is there a trick to upload? Neither, flash uploader or single image, working for me.</p>

Oh, there is option at the end of post to attach image. Great!

 

It is 1 sec exposure over flash light. It confirms what I see by eye.

<p>All the leaf shutters I had in my hands (and there were quite a few) did not have any kind of interlock for keeping them open. The blades are simply swivelled around by an actuating ring which is driven by the shutter spring. After completing this movement, they are driven backwards by a closing spring and it is the escapement mechanism or a solenoid which determins the fully open period.</p>