[LargeFormat] Gundlach 12" Radar in #5 Betax

[Clive Warren]

>From: "Don Feinberg"
>Date: Sun, 30 Dec 2001 23:47:57 -0600
>
>I have one...
>
>----- Original Message -----
>From: "Clive Warren"
>
> > Does anyone have a Gundlach 12" Radar lens in a #5 Betax shutter? > I 
>have some questions about how the elements are spaced and held in > the 
>shutter!

Hello Don and Ken,

Good to know that you may both be able to help me!

I recently acquired the lens and am hoping to use the shutter with other 
lenses in addition to the 12" Radar. The Betax #5 shutter seems to have two 
spacers that the lens elements screw into. The rear elements unscrew from 
the shutter together with the rear spacer. The front elements unscrew from 
the front spacer but the spacer itself seems to be well and truly mated with 
the shutter - ie I cannot remove it. I do need to remove the spacer as the 
shutter needs a bit of TLC - only a few screws to tighten under the shutter 
front plate. The front plate will not pass over the front spacer so that 
spacer has to be removed.

On close inspection of the front spacer it seems that there are four holes 
that have been filled in on the inner diameter at the top. I cannot imagine 
that these would be for holding screws as the front spacer surely is screwed 
into the front of the shutter?

Anyway, before applying any real force to the front spacer in an attempt to 
unscrew it, does your 12" Radar have a similar spacer and does it unscrew? 
Are there four filled in holes in the top of the inner diameter of the 
spacer?

Cheers,
       Clive



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