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Post by John Farrell on Dec 21, 2006 1:18:52 GMT -5
I have just received my latest online purchase, a Petriflex 7. Apart from a bit of corrosion, and dents on the top plate, this example has the wind lever disconnected from the mechanism - the lever can be rotated against the pressure of the return spring, but othing else moves. Does anyone have repair information for this camera?
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Post by John Farrell on Dec 22, 2006 0:12:48 GMT -5
Well, I've partly stripped the camera, and had a play with it, and established that it can be wound one of every two shots with the wind lever (the second requires you to wind by rolling the film sprocket until the shutter cocks). This suggests a component failure in the wind mechanism. Now - do I really want to strip the shutter winding gears and the slow speed escapement, to reach the wind mechanism? Should I just clean the camera up (it is pretty rough), and keep it for display?
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Post by Randy on Dec 22, 2006 7:12:32 GMT -5
Sounds like a parts box camera to me John. I keep my examples of non-functional cameras as I never know when a functional one will need a part.
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bobm
Contributing Member
Posts: 36
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Post by bobm on Dec 22, 2006 9:50:21 GMT -5
I'm with Randy here John F - keep it as a parts camera.
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Post by kiev4a on Dec 22, 2006 12:43:32 GMT -5
I have a Petriflex 7. When I first got it the shutter would hang for a long time before closing. I kepts cocking and firing the shutter over a period of weeks and eventually it loosened up. Doesn't sound like your problem, however.
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Post by John Farrell on Dec 22, 2006 18:48:58 GMT -5
Thanks for the advice, guys. This is the only Petriflex 7 I have seen - they aren't common in this part of the world. I think I will strip it further.
It sounds futile, John.
I think that sad camera has been PETRI-FIED or should be.
My condolences.
Mickey
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Post by John Farrell on Dec 22, 2006 21:02:35 GMT -5
Well, this is definitely a parts camera. The wind mechanism, and the shutter mechanism with two of the shutter shafts are built as a single unit, between two gear plates. I have not been able to remove this unit from the camera body - the cam that reopens the diaphragm on winding is held into the mechanism by a connector that I am unable to undo, and this prevents removal. I was able to lift the mechanism far enough to see the trouble with the winder - winding is done by a ratchet which engages with pins perpendicular to a gear. There should be 2 of these pins, but one is sheared off.
There is one mystery about the camera, however. The manual says the Petriflex 7 has a fully automatic diaphragm system, and gives the steps of operation for this, on shutter release. Step 5 says "Gives the lens back to fully opened position". The camera I have, however, only reopened the diaphragm on shutter winding. Were there 2 versions of the Petriflex 7?
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Post by John Farrell on Dec 22, 2006 22:01:54 GMT -5
A picture of the mechanism.... On the left, the shutter, on the right, the wind spindle. The rusty area between is where the slow speed escapement fits.
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Post by John Farrell on Dec 22, 2006 22:34:46 GMT -5
And the same thing from the front.. Note the leatherette......terrible stuff, it cracked and broke as I tried to lift it. It's the worst I've come across.
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Post by John Farrell on Dec 22, 2006 22:50:25 GMT -5
And here's a picture of...the Work Bench...
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Post by herron on Dec 23, 2006 15:39:07 GMT -5
And here's a picture of...the Work Bench... Omigosh! A workbench you can actually see! Mine has been buried in cameras and camera debris for so long, I've forgotten what it looks like! ;D
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Post by John Farrell on Dec 23, 2006 17:29:31 GMT -5
Well, you can see it at the moment.......I had to make room to dismantle the Petriflex!
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PeterW
Lifetime Member
Member has Passed
Posts: 3,804
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Post by PeterW on Dec 23, 2006 18:04:04 GMT -5
Hi Johnf,
I've also got a Petri SLR, an FTII, that's a parts camera. It's completely jammed, and under the bottom plate is a long shaft running across held by three pedestals, one of which, at the end under the winding gear isn't detachable from its base plate which carries part of the winding gearing.
The shaft will lift out if you undo the other two pedestals, which I did, and it lifted out in two parts! For some reason, I have no idea why, it sheared right across under a long spring so the break didn't show. The lens iris is also completely stuck.
Well, I picked it out of a junk box as jammed for 50p so I suppose I cant grumble, but I don't think I'll pick up another one, working or not.
PeterW
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Post by John Farrell on Dec 23, 2006 18:22:28 GMT -5
Peter - I paid a bit more than that for mine - the Petriflex 7 is a collectible, partly because of a fancied resemblance to the Contarex. Oh well, that's what happens when you buy at online auction sites.
I can't complain, really. I've picked up some real bargains online - the best being a Pentax Spotmatic with f1.4 lens, flash, manual, 35mm, 135mm and 400mm lenses (alas not Pentax) and a camera bag, all for NZ$50!
John
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Post by John Farrell on Dec 23, 2006 19:00:55 GMT -5
The timing shaft along the bottom of a Petri SLR: From the left - the gear, attached to the spring (the dark coloured coil), not the shaft. This is wound by a gear on the bottom of the film sprocket shaft. -the spring attaches to the shaft at its right hand end. -next, the shutter release mechanism (and also the mechanism that returns the shaft to its rest position on winding the camera). -the brass ring on the shaft is part of the mechanism which releases the shaft after the second shutter curtain finishes its run. -after the bearing is the cam which operates the diaphragm stopdown lever. -next, contacts for flash timing. -after the rightmost bearing is the crank which raises and lowers the mirror.
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