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Remove Chubb spindle

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MartinHewitt

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Post Fri Nov 16, 2018 11:27 am

Remove Chubb spindle

Next problem. I do have this dial and need to straighten the spindle. It would be easier without the dial. Is there a way to remove it? I don't see a pin which can be removed.
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MartinHewitt

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Post Fri Nov 16, 2018 3:18 pm

Re: Remove Chubb spindle

And same problem here with this Kromer dial. There is a gray shadow, but that is only a halve circle, so I doubt it is a pin.
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MartinHewitt

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Post Sat Nov 17, 2018 5:08 pm

Re: Remove Chubb spindle

Managed to straighten the Chubb spindle well enough without removal.
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L4R3L2

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Post Sun Nov 18, 2018 6:34 am

Re: Remove Chubb spindle

How did you do it?
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MartinHewitt

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Post Sun Nov 18, 2018 9:32 am

Re: Remove Chubb spindle

With three soft soft pieces (wood, tin, ...) in a vice. Two pieces on the outer edge of one jaw and the other piece in the middle of the other jaw.
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MartinHewitt

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Post Sun Dec 23, 2018 8:49 pm

Re: Remove Chubb spindle

For the record: The top of the dial knob is labeled "Chubb" and has an arrow. This can be screwed of. Holding the tiny serrated edge might help. I did press the top onto the table with a rubber in between to increase friction. Removing the cover gives access to a hex nut. When this has been screwed of the spindle can be easily removed. The spindle is square with a cut of edge. So there is only one possible position when it is assembled again.

Different dial, new problem: The bl**dy safe tech who mounted the dial used a wrong spline key and cut and/or wedged the notch open. A drive cam can be screwed on with force, but it will damage the threading of the drive cam. I suppose there are no dies for cutting this threading available? Any other way to salvage this? Edit: I guess I have to correct the damage with a file.
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
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Jaakko Fagerlund

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Post Tue Dec 25, 2018 10:50 am

Re: Remove Chubb spindle

MartinHewitt wrote:Different dial, new problem: The bl**dy safe tech who mounted the dial used a wrong spline key and cut and/or wedged the notch open. A drive cam can be screwed on with force, but it will damage the threading of the drive cam. I suppose there are no dies for cutting this threading available? Any other way to salvage this? Edit: I guess I have to correct the damage with a file.

What thread does it have? I know at least the imperial versions are available as dies, never run into metric versions yet so don't know the sizes.

What I usually use if the thread has just gotten a little smack on it is a thread repair file, like this: https://en.wikipedia.org/wiki/Thread_restorer

You can find those from automotive part stores that sell tools, should only cost a few euros. Or eBay/Amazon, look for "thread file".
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MartinHewitt

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Post Tue Dec 25, 2018 11:07 am

Re: Remove Chubb spindle

The threading is an UNS 3/8"x30. A 3/8" die would be no problem, but x30 is finer and rarer than UNF. I cleaned up the threads with a fine triangle file. Now only a good groove is still to be made.
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
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Jaakko Fagerlund

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Post Sat Dec 29, 2018 12:52 pm

Re: Remove Chubb spindle

MartinHewitt wrote:The threading is an UNS 3/8"x30. A 3/8" die would be no problem, but x30 is finer and rarer than UNF. I cleaned up the threads with a fine triangle file. Now only a good groove is still to be made.

This is one option, seems they have both the tap and a die: https://www.tracytools.com/3-8-x-30-tpi
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MartinHewitt

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Post Sat Dec 29, 2018 1:18 pm

Re: Remove Chubb spindle

Wow! Thanks. I'll try to order thwm. Might get useful sometimes.
In case you wonder ... Martin Hewitt is a fictional detective in stories by Arthur Morrison:
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