Normally I turn a disc drive to small pieces for bits springs etc.
But it should work without the spring but you might damage the pin...
At the moment the pin is no use at all. It doesn't block the shutter or prevents from double exposures and on top it blocks the rotating adapter because the pin falls back when the lens is facing upwards. grrrrr!
What do you mean with bits and pieces of a disc drive (sorry my english is not that good)?
Im confused on my Pro S
Originally Posted by Xmas
- When the body is armed and the pin should comes out its 4.5 mm the back will physically stop the pin before that at about 3.0 mm? This blocks the shutter stopping a double exposure
- the rotating adapter will block the shutter release if the dark slide is not out, the dark slide has two fingers which tell the rotating adapter a back with a dark slide fitted is present the pin should come out 2.0 mm
You need to check both cases
I apologise I was abstract an old computer disc drive is a good source for springs if you dismantle it if you can't get the correct one from Mamiya.
There is a repair manual
google MAMIYA RB67 repair manual
my phone won't pick up the PDF URL sorry
Thanks! The repair guide shows one more missing pin ;-)
I give up for now. I have to get hold of a good adapter and see how that works on my body.
Thanks for all your help and effort!
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A little report how things went on, for all those nice people who cared to help.
I finally bought an other rotating adapter which had all the missing pins in place. It turned out, that exactly that was the problem. There are two corners with pins which communicate from body to back. Both were missing. Now everything works. Problem solved. :-)))
The new (used) adapter has no seals. Mamiya Germany doesn't sell them anymore, only the rest they have in stock and only when they can do the work. This is now in process.
Thank you all for your help!!!
google Jon Goodman or
cut up mouse mat, - scissors scalpel steel ruler
double sided pressure sensitive tape
the rotating back and mirror normally have foam too.