[LargeFormat] Gundlach 12" Radar in #5 Betax

[Ken Hough]

The timing cam on a Betax is continuous between speeds. Those dots
are just approximations. I looked at my 5s and 3 have 1 sec and 5of them 
have 1/2 sec as the slowest. I met a Wollensak engineer when I was just 
21years old. The 1/2 sec was done so the 1/50 was close.
Ken

To:             	largeformat@f32.net
From:           	Clive Warren <cocam@cableinet.co.uk>
Subject:        	Re: [LargeFormat] Gundlach 12" Radar in #5 Betax
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Date sent:      	Wed, 2 Jan 2002 02:24:27 +0000

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At 10:57 am -0600 31/12/01, Ken Hough wrote:
>The (spacer) threaded bushing was done so that huge barrels outer diameter
>could be done. I just put a lens spanner in it and turn.  I have a 
>lathe to hold
>the body of the shutter in.  All the ones I have are like that too.
>By the way 1/50 top speed is a dream. if you adjust the 1 sec time the fastest
>1/50 goes is 1/25. If you adjust the 1/50 so its correct, 1 sec is 1/2 sec.
>I have several BRAND NEW Betax 5s. Every one is like that.

Ken,

Just reread your post and it suddenly occurred to me that I hadn't 
seen a 1 second setting on the Betax #5. Had a quick look and sure 
enough it only goes down to 1/2 second. Another interesting point is 
that there are dots between 1/2 and 1/5, 1/5 and 1/10, 1/10 and 1/25. 
Will have to get the shutter tester out and see if there are 
intervening shutter timings - seems unlikely.....

Cheers,
        Clive

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        ******Ken Hough Photographic Repair******
         Specializing in Deardorff Refinishing
          Lens Recementing and Shutter repair
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           Custom machined Photographic items
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