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[chris burck]

 hey, all, i was so encouraged by my success with those faulty compur and compound shutters that i decided to plunge right into the deep end.
 
i have a petri racer in super clean condition, but the diaphragm and shutter are both basket cases.

[chris burck]

 i forgot to mention that the shutter cocking lever projects out through an opening in the back of the casing, overlapping it in such a way that in order to remove the shutter/mounting plate i'm going to have to remove the lever.
 
the lever is a

[Winfried]

 I once disassembled the shutter of a Racer with f/1.8 lens (which I dropped on the floor soon after finishing this repair). I also have the Racer with f/2.8 lens but I did not have to disassemble the shutter.  
 
On the shutter of the f/1.8 lens the

[chris buck]

 lol, too late.  i've since forged ahead.
 
i didn't realize there was a f/2.8 version of the racer (guess i should've, though).  i've got the 1.8, and the cocking lever is connected to the shaft with a sort of nut/cotter pin combinatio

[Winfried]

 I don't know what made your aperture blades messed up. Sometimes the guide pins break off but this does not seem to be the case. The only way to get replacement blades is from a camera with the same shutter. I don't think I kept the aperture assembly

[chris burck]

 hmm, i feared as much.
 
i saw very few of them as well when i was looking for a camera of that genre.  as i recall i was rather lucky.  there weren't a lot of bidders and i got it fairly cheap.
 
though disappointed to find it in the condi

[Haig Hovaness]

 You seem to be well along in the repair, but I though I would pass along an observation on the Racer. The one I have has a remarkably accurate leaf shutter. Evidently Petri figured out how to build a near-perfect leaf shutter just as the inexpensive ra

[Winfried]

 I do not have any experience (yet) with other Petri shutters (my Racer 2.8 is still sitting on the shelf), but I once tested a Petri Color35 shutter to check whether I had reassembled the escapement hairsprings correctly. It turned out that it was so a

[Michael Linn]

 For Winfried:
 
The speed and f-stop dials stay with the top. To remove the top, focus the lens out towards infinity first if you want to operate the shutter with the top off. Unscrew the pin-faced screw holding the focusing wheel and remove it. W

[Winfried]

 Thanks, this is a great help. I was always wondering about the f- and speed dial - no screws and nuts visible. I will try your method.

[rcxboy]

 I have a petri racer 2.8, and want to completely clean the shutter and lens.
I have tried to dissassemble it, and got the top and bottom casing off. I havent managed to remove the lens parts, or anything else. I want to get to the shutter and it