Jump to content

Recommended Posts

Posted

I have read through all my tech data on the 7750. This will be the 4th one I have purchased for parts and rebuilt. The chrono bridge here in this one is unfamiliar to me.....can snybody shed some light on where it comes from???6779ddbad85ee17d254629492a17dcbf.jpg

 

Sent from my SM-G950U using Tapatalk

 

 

Posted

It Might be one of those 7750 derivates used by Longines and others, could you take a picture closer to the balance, there it should say what model it is, might say something like A07.XXX?

Posted
It Might be one of those 7750 derivates used by Longines and others, could you take a picture closer to the balance, there it should say what model it is, might say something like A07.XXX?
A05H21

Sent from my SM-G950U using Tapatalk

  • Thanks 1
Posted (edited)
4 hours ago, bjd1020 said:

A05H21

Sent from my SM-G950U using Tapatalk
 

Its a variant of this:

Screen Shot 2019-05-13 at 11.54.06 PM.png

Edited by noirrac1j
  • Like 1
Posted
5 hours ago, bjd1020 said:

A05H21

I see noirrac1 found the data, this might have been in a Hamilton Khaki Field Chronograph.

It is a nice treat getting to see this beauty, thank you.
 

  • Like 1
Posted

The add on ebay had it listed as a vintage Omega. I had to replace the balance and rotor. I paid 60 bucks for it.

Sent from my SM-G950U using Tapatalk

Posted
14 hours ago, bjd1020 said:

The add on ebay had it listed as a vintage Omega. I had to replace the balance and rotor. I paid 60 bucks for it.

Sent from my SM-G950U using Tapatalk
 

That's an unbeatable price for a 7750 even with having to buy a balance and rotor. A brand new 7750 day/date is nearly $500 from J Borel.

J

  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • interesting video nice to see the machine what it can do now I wonder what it costs and I'm sure it's not in my budget. Plus the video brought up questions but the website below answers the questions? What was bothering me was the size of his machine 4 mm because I thought it was bigger than that? But then it occurred to me that maybe they had variations it looks like four, seven and 10. With the seven and 10 being the best because way more tool positions in way more rotating tools. Although I bet you all the rotating tools are probably separate cost https://www.tornos.com/en/content/swissnano   Then as we been talking about Sherline. Just so that everyone's aware of this they have another division their industrial division where you can buy bits and pieces. I have a link below that shows that just in case you don't want to have the entire machine you just need bits and pieces. https://www.sherline.com/product-category/industrial-products-division/   Let's see what we can do with the concept I explained up above and bits and pieces. For one thing you can make a really tiny gear very tiny like perhaps you're going to make a watch. Then another version the center part is not separate it is all machined from one piece. Then fills gear cutting machines have gone through multiple of evolutions. A lot of it based on what he wanted to make like he was going to make a watch unfortunately eyesight issues have prevented that. Another reason why you should start projects like this much sooner when your eyesight is really good or perhaps start on watches first and then move the clocks then local we have from the industrial division? Looks like two separate motors and heads. Then it's hard to see but this entire thing is built on top of a much larger milling machine as a larger milling machine gave a very solid platform to build everything.   Then like everything else that had multiple generations are versions the indexing went through of course variations like above is one version and the one below was the last version. Now the version below I mentioned that previously and somewhere in the beginning to discussion and somebody else had one in their picture. As it is a really nice precision indexing. Then I wasn't sure if I had a the watch photos here is his unfinished watch. No he wasn't going to make a simple watch like none of his clocks were simply either what would be the challenge and that.    
    • Use a Portwest Howie lab coat. They are the biological type so they have tapped cuffs so you don't end up getting the loose cuffs of normal lab coats catching everything. 
    • Some of the Chinese tools ae great and can be purchased at a fraction of the price of Swiss ones, some are complete garbage and some I'm convinced are coming out the same factory as the branded ones.
    • I found this string about this problem. I've not gone through it all, but I believe it also mentions making a spring. If not in this string, the info is online.
    • No, I now realise it’s broken😥 ive looked for one online, but v. Expensive! im going to service as is, in the hope that  one turns up. Thank  you.
×
×
  • Create New...