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How to make shorten crown tube?

wtfbro

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4/9/24
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Hi.
I wondering how to make shorten crown tube?
(ZF Tudor Black Bay 58.)
I'm new to this community and I can't find it no matter how many times I search for it. My native language is not English, I think I have a limit to searching. Please help.
 

Feefo

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@Geonor did that.
Hi and welcome to RWI! Glad you found your way here.

Please take some time to read the sticky threads in the new members area (all subsections), learn the basic forum rules and get some very good advice in the process. A number of questions has already been answered there, this is just an example:


As a new subscriber, you've already been directed to this thread, please read carefully and look through the linked additional threads:


Another good thread to read to understand where RWI comes from and some fundamentals is this:


Most of the information you need to know to start is there. If you're preparing to buy, read the stickies before ordering. When you're finished, you can continue learning by reading the stickies in all remaining sections. If it's stickied, it's important information.

If you intend to sell, read the sales rules and all stickies in the sales section with particular care and make sure you understand each single rule. Sales rules infraction is taken very seriously here. As a new member you are not eligible to sell. Using the sales section is a privilege, eligibility must be earned, make sure you know and understand how.

For anything else, feel free to reach out to @eBoy or me, we're happy to assist, advise, direct, explain. Don't hesitate.

Don't be afraid to post noob questions in the new members area. In doubt, use the flame free zone. If you feel uncomfortable anywhere in the new members area, please reach out to @eBoy or me. Mutual respect is of utmost importance to us. On the other hand, we're grown-ups and are supposed to be able to deal with a bit of irony, don't take it personally, ever, a bit of irony never harmed anyone. If you laugh at jokes, you'll make friends faster.

This forum is a treasure trove of information and benefits from the engagement of all members who take their time to share their knowledge, help each other out and have some fun. We hope that you'll benefit and enjoy this platform as well as contribute positively to it.

If at any point you feel to contribute also on another level, feel free to pm the boss (trailboss99) to become a supporter and get some little perks with the status (editing rights, for example).

Enjoy the forum.
 
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Raddave

Most Delicious of all Nipples!
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Hi.
I wondering how to make shorten crown tube?
(ZF Tudor Black Bay 58.)
I'm new to this community and I can't find it no matter how many times I search for it. My native language is not English, I think I have a limit to searching. Please help.
what exactly are you trying to do ?
 

Raddave

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the side that threads into the case or the side that threads into the crown
 

Raddave

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you got a pic of the tube removed fron the case ?
 

Geonor

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Unscrew the back, pull the crown to the time setting position, use a 1.2mm screwdriver to push down the release button. This is so you don't mess up the keyless works. The hole is slotted for a screwdriver of that size so you don't depress it too far.

Unscrew the movement tabs, remove the movement, stick some rodico in the crown tube so you don't get metal debris in there. Then you just sand the crown tube down a bit from the outside. Test the crown often so you don't go too far. I used a 5 inch sanding disc on a lathe to get it straight but you can do it by hand if you don't have the tools. It just takes longer and you need so keep it straight yourself.

h5LjfW.jpeg


That was my result. It kept the water resistance after the mod. I tested it before and after to 6 ATM.
 
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