| Author |
Message |
    
Jxbjxb
Tinkerer
Username: Jxbjxb
Post Number: 1
Registered: 03-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 21, 2009 - 01:17 pm: | 
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In taking apart my Yashica GSN RF recently, the ball bearing that serves the detent for the "Auto/B/Flash" setting on the lens ring went flying.
Any idea what size that BB is so that I can source a new one?
Thanks much.
-jb |
Rick_oleson
Tinkerer
Username: Rick_oleson
Post Number: 841
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 22, 2009 - 08:52 pm: |
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Not sure, but the most common size is 1mm. |
Jxbjxb
Tinkerer
Username: Jxbjxb
Post Number: 2
Registered: 03-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 23, 2009 - 01:18 am: |
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Thanks, Rick. The receptacle for the BB itself measures around 2mm across - the click-stop for the detent 1.5mm or so. I am assuming that 2mm is the size but I don't want to guess and would rather order the right size. I have some 1.7mm on hand that are too small. So if anyone happens to have one disassembled and can measure it, or a repair manual that actually lists the size, I'd be very grateful... |
Mattboston
Tinkerer
Username: Mattboston
Post Number: 3
Registered: 01-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 23, 2009 - 08:57 pm: |
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Hey JB,
Just got home and happened to have a film cannister filled with parts stripped from a GSN. Opened the case- dumped it on my desk and one bearing rolled right into my hand- at 1.975mm. So it looks like 2mm is the winning size. Unless, of course, there are other bearings in there that did not make it into my scrap pile.
Matt |
Jxbjxb
Tinkerer
Username: Jxbjxb
Post Number: 3
Registered: 03-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, March 24, 2009 - 10:58 pm: |
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Very cool, matt. I'll order a 2mm and get on with the repairs. Thanks! |
Jxbjxb
Tinkerer
Username: Jxbjxb
Post Number: 4
Registered: 03-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 14, 2009 - 09:47 pm: |
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Just a followup on this. In fact, a 2mm bearing was perfect. I ordered some from smallparts.com and the Yashica is once again as good as new. Thanks! |
