Jump to content

Recommended Posts

Posted (edited)

Just wondering if anyone else is currently doing the DLC? Got mine in November and started in January, working my way through lesson 2 at the moment. And that’s a test on the old brain that’s for sure!!!

Although I have to say that the new DLC is superior to the old DLC of which I have a copy aswell.

Have to say that after 8 years of tinkering including making parts from scratch its amazing just how little you actually know! Especially the complicated ways calculations are expressed!!!!

Edited by transporter
Posted

@transporter I am also working my way through it, since October. Yes, it's a stretch for the noggin for sure. I find I would like a little more watch stuff and a little less clock stuff, generally, but I think that's supposed to change about the halfway mark. Anyway, much of it is applicable to both. One thing I really need to get sorted is workshop space to do the practical exercises. I am set up for watch stuff, but not so much for clocks / making tools.

Posted

@JohnC I really struggled with the way the calculations were written out for train counts, wheel turns, period of pendulum and tooth period etc etc, for such simple calculations it’s ridiculous. I guess thats just how mathematicians write out simple sums,  I can refer to the wheel turn calculation in lesson two, a very long winded way of doing a simple division, I button bashed the calculator and came up with the answer shown quite by accident!!

I am waiting for cousins to get a stock of their vices in, direct copies of bergeon for a fraction of the price, my current vice just isn’t accurate enough on the jaws for the practical pieces. 
Did you opt for tutor feedback or not?

Posted
On 1/28/2021 at 5:13 PM, transporter said:

@JohnC I really struggled with the way the calculations were written out for train counts, wheel turns, period of pendulum and tooth period etc etc, for such simple calculations it’s ridiculous. I guess thats just how mathematicians write out simple sums,  I can refer to the wheel turn calculation in lesson two, a very long winded way of doing a simple division, I button bashed the calculator and came up with the answer shown quite by accident!!

I am waiting for cousins to get a stock of their vices in, direct copies of bergeon for a fraction of the price, my current vice just isn’t accurate enough on the jaws for the practical pieces. 
Did you opt for tutor feedback or not?

I've been looking at the BHI DLC courses and have been through the taster. In terms of the vice, it recommends a 75mm (3 inch) vice not specially a watchmakers vice. I've seen these on Amazon for £30-40. Is the issue the how parallel the jaws are?

That said, Cousins specifically state that their vice (10th of the price!!) is almost indiscernible from the Bergeon. It is on my shopping list when it is back in stock!

Posted
9 hours ago, BungleBogs said:

I've been looking at the BHI DLC courses and have been through the taster. In terms of the vice, it recommends a 75mm (3 inch) vice not specially a watchmakers vice. I've seen these on Amazon for £30-40. Is the issue the how parallel the jaws are?

That said, Cousins specifically state that their vice (10th of the price!!) is almost indiscernible from the Bergeon. It is on my shopping list when it is back in stock!

Ref the vice, I’ve one from Amazon at the moment and it’s great for just gripping stuff, but the jaws close just on the threaded rod so the jaws don’t line up when closed. The cousins one like the bergeon one runs on dovetail runners and in so doing so the jaws stay parallel. 

  • Like 1

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Hello and welcome from Leeds, England. 
    • This is the old/first(?) way for making a mainspring for an automatic. "Evolution-wise" it is an logical first step forward from a standard spring. Usually these are indeed replaced with a new spring with an integrated/fixed bridle. Lubrication as you would do with any automatic.
    • I'm working on a Schild AS 1250 (a 'bumper' automatic) and it's the first time I've seen a mainspring like this. It has what looks like a regular manual-wind mainspring with a 'hook' at its outer extremity. On a manual-wind watch that 'hook' would engage with a 'hook' in the barrel wall to prevent it from rotating. However, the AS 1250's mainspring does not engage directly with the barrel but rather with a 'sliding bridle' that sits between the mainspring and the barrel wall, and evidently facilitates the slip necessary in an automatic. I'm not sure what advantage this two-piece configuration provides, but it highlights a gap (one of many) in my horological knowledge. I'm not sure if 'hook' is the correct term as used above, but please see photo below to see what I mean. Therefore, two questions please. 1. What is the proper way to lubricate a barrel from an automatic watch with a sliding bridle? My guess is the same as any automatic ms/barrel (e.g, a few dabs of braking grease on the interior barrel wall). What do the experts say? 2. I purchased a Generale Ressorts GR3472X mainspring, made for the AS 1250. It looks like the bridle is included and I don't need to salvage and re-use the old one. Is this a safe assumption? Thanks for the advice. If you have any other wisdom you'd like to share about separate sliding mainspring bridles, I would be very interested. Cheers!
    • Thank you Hector. You too matey 😊
    • Bless you, Mark. May you live long and prosper!
×
×
  • Create New...