Trying to save a 485mm Repro-Claron

[Yourix]

Hi there
I bought for a penny a 485mm Repro-Claron in barrel with stuck aperture and i'm trying to save it.

The barrel is out of order...My guess is it fell on a very hard floor or something like that. I took almost everything apart and can clearly see that the aperture ring is oval and the barrel is somehow deformed... So slightly that you can hardly see it but it make it super hard to screw/unscrew the different parts of the lens...
Rear and front cells are Ok tho, except a dent on the filter thread, and I would like to save it. Is it a direct fit on any shutter size ?

This lens is heavy duty and I can't imagine what happen to it to damage it like that... Must have been brutal !

[arri]

Without a picture of the lens I can say exactly which size the lens cells have.
Schneider made twi different version of normal mounts for this lenses and following your description I think it is the larger, black painted barrel.
This has no standard threads and the cells can not screw into a shutter.

The other version has the threads of the Compound IV shutter or the equilent barrel mount. A Schneider Xenar 4.5/240mm has a barrel like this.

When the barrel of your lens is deformed it is the only way to find another normal mount or shutter for it.

Maybe you give more information and a photo of it I can say something more about it.

[nolindan]

You may be able to straighten the barrel.

Take lite taps with a dead-blow hammer and measure progress with a vernier caliper. Or keep the barrel between two bits of wood and use a regular hammer, making a bit of a semi-circular cut in each bit of wood can help.

It is a 'heroic measure,' but what is there to lose?

The opposite advice is given by the Engineering adage: "If you fix anything for a long enough time, you will really break it."

I don't know what the French word for dead-blow is: https://en.wikipedia.org/wiki/Dead-blow_hammer

[Yourix]

following your description I think it is the larger, black painted barrel.

Exactly ! Mine in actually in parts but it's the exact same lens as this : https://www.worthpoint.com/worthopedia/repro-claron-f9-485mm-19-schneider-1920647329
If i'm correct there is no hope to mount it in a shutter and my only option is to try to somehow fix the barrel. Of course the risk is to damage it beyond repair but I don't have anything to lose trying...