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Amateur tinkering with a Mickey Mouse design

  1. ChrisN

    ChrisN Nov 7, 2015

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    Last year, I built my wife a Seamaster 60m for one Christmas present ( https://omegaforums.net/threads/chr...d-an-amateur-vintage-style-watch-build.18596/) so, having set a precedent, thought I should do another watch this year although this is a bit of a daft present. Should have stuck with Channel No. 5, much easier ;). Well, times are hard (not really) so have invested $20 in this non runner. This is nothing special but interesting to see a different way of doing things. It's a bit of a Mickey Mouse design from the early Seventies though - ah, I remember it well: flares; T Rex; long hair; Slade; power cuts (in UK); blo#*y great!

    When I got this (advertised as not working), it would run for a few seconds and then stop so clearly not a broken balance staff. It was fully wound so some other problem. De-cased, it was apparent that the closing plate of the barrel was loose. These should be pressed on to the barrel to support the barrel on one side of the arbor. Might be visible here.
    1 barrel strip.jpg

    This is a Roskopf (I think) pin pallet escapement running at 18000 A/h and has a grand total of one jewel! I expected this to be the impulse jewel on the balance that contacts the fork but it isn't. Here's an Omega 565 balance with its ruby coloured impulse jewel (close to the pivot) and this balance on the left which uses a metal impulse.
    4 balance.jpg

    Let the movement down, stripped it and it appeared to be all there. Cleaned and checked over and apart from the barrel issue, everything is fine. Little pivot wear so it likely has been a non runner for years. Parts for these cost buttons really, but nice to be able to re-use everything.

    The mainspring goes in anti clockwise (most are clockwise) and as I wanted to re-use it and am too mean to buy left hand winders, had to wind it clockwise, press out of the winder into an mainspring ring, turn over and press into the barrel. Here, barrel with spring fitted, arbor and closing plate.
    2 barrel build.jpg

    The closing plate snaps in fine so I can only assume it was badly fitted before. Other side of the barrel has another gear as well and directly drives both the minute and hour hand pipes. It becomes clear later.
    3 barrel gear.jpg

    This is unusual for me. In a more typical calibre, the barrel outer teeth drive the 2nd wheel which passes through the plate and has the cannon pinion attached to it onto which the minute hand is pressed. Then there's an intermediate pair of gears to drive the hour hand.

    Here's the one jewel and it's the cap jewel on the balance cock so, on the wrist the balance will touch this side when the crystal is uppermost (arm rested on the table). It should run best in that position. It's a KIF shock protection system and those little triangular springs are rotated into the cut out to extract the jewel/holder. They can escape and end up anywhere so when working on them I keep a small oiler lightly pressed on the jewel so they go up the oiler rather than the nose...
    5 balance jewel.jpg

    Note above, adjustable stud carrier! Not too shabby.

    Here's the train from barrel (great wheel) and the teeth drive the 2nd wheel on the top left which drives the 3rd wheel below it, which drives the 4th wheel right in the centre of the movement. This rotates once a minute and extends through to the dial side and the second hand is pressed directly onto it. This drives the escape wheel (with the strange shaped teeth) whose movement is controlled by the pallet fork at the lower. There are two pins (hence pin pallet) on the left and right that contact the escape wheel teeth.
    6 train.jpg

    Now, all the above are under one plate which is a bl%#*y pain to fit as you're lining up six pivots and there are no jewels to give you visual clues. So, after a little time and a few choice words, it's fitted. Actually, I did this twice, the first time without the fork to check all rotate and have reasonable shakes. There is no adjustment anyway and no replaceable jewels so, luckily they were pretty good, a bit high on end shake but it's not an 861:rolleyes:
    7 plate.jpg

    Very simple click and spring combined which rotates in the lower hole of the previous picture and is limited by a pin in the upper hole.
    8 click.jpg

    Nice arrangement for the keyless works on the dial side. The fourth wheel shaft for the second hand and other KIF can be seen here (it's not a ruby though) as well as the teeth on the barrel and it's secondary gear.
    9 keyless.jpg

    Cannon pinion fitted and meshed with the barrel gear outer teeth. So, as the 2nd wheel allows the barrel to rotate, the cannon pinion rotates. The minute hand is pressed on here.
    10 cannon.jpg

    The hour wheel (and dial washer) on top of the cannon pinion and meshed with the other gear on the barrel. The hour hand gets pressed on here.
    11 hour pipe.jpg

    That's it, turned over again, balance fitted and movement running.
    12 running.jpg

    Added a little oil to the sinks and used 9415 on the pallet pins and here it is running in FH. I know I shouldn't oil the fork pivots but a tiny amount of 9010 seemed sensible as it's metal in metal. I don't think this is a bad result for a pin pallet but this is only the second I've done...
    13 FH just built.jpg

    Will leave it for a few days and add the dial, hands and case. Need to order a crystal but this year I have lots of time unlike last when I finished for Epiphany ::facepalm1::

    So, how much oil in those sinks? These are not like jewels so I'm not sure, just wetted the pivots so far. Happy to take advice here.

    More next week. By the way, I do have Omegas so must show one of those next but I like to ramble...

    Cheers, Chris
     
    Edited Nov 8, 2015
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  2. JimInOz

    JimInOz "Helpful Hints from Heloise" of bracelet cleaning. Nov 8, 2015

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    When I saw "Mickey Mouse design" I immediately thought of a Roskopf or Baumgartner.

    Things in the late 70s were going downhill. Taste, style, and Swiss watch quality. Although I suppose they were trying to economise in the face of the quartz boom.

    Not knocking pin levers, I have a few myself and find them to be an economical solution to a complex design requirement.

    The plates have sinks so as they are metal to metal points, I'd almost use clock oil on them, and I wouldn't bother using epilame on any of the movement :D
     
  3. ChrisN

    ChrisN Nov 8, 2015

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    You're right Jim, it's a Baumgartner (BFG) 844 and I think it is a strict Roskopf design but I know there are variations. Worst part with these is making sure the escape teeth are clean in the corners. They really are simple and cheap and I suppose were intended for everyone. Really only measures well in horizontal positions but is within a minute or so over 3 positions and runs strongly. For a one jewel watch, that's likely acceptable.

    Depending on whose opinion you take, Epilame is more important on these than a lever escapement so, I treated as usual. Who knows as there's no real market for these and I believe most Pros won't touch them. Just a few fools like you and me:D

    The thing with those sinks is they are not dished at all so don't hold the oil. I put a typical amount on each one and, today, seem to have a little fillet of oil around the pivots. In a weeks time, who knows...

    Cheers, Chris
     
  4. UncleBuck

    UncleBuck understands the decision making hierarchy Nov 8, 2015

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    Wonderful work, Chris!
    I admire your skill in repairing this unorthodox project.

    I can't even get my stinkin' chainsaw to run!

    439595.jpg
     
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  5. vinn2

    vinn2 Nov 8, 2015

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    very good photo "uncle buck" -- vinn
     
  6. ChrisN

    ChrisN Nov 14, 2015

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    Few days in and it settled to this in dial up at full wind. Not bad but the vertical positions are none too brilliant. That's fine for me. Power reserve was 54 hours so everything seems well.
    0H CH 1 day in.jpg

    Now I was not being critical of Baumgartner when I said it was a Mickey Mouse design as it really is. Here, with dial and hands mounted.
    14 dial and hands.jpg
    OK, so I know it's a bit daft but is a stocking filler and amuses me. Case back is deep and has a cut-out for the crown so, the movement presses in here.
    15 back.jpg

    Movement now in the back and here with a pair of Bumpers I was wearing earlier this week. Talking of being easily amused, I quickly develop a twitch with these, lifting the arm up to the head to feel the da-da-dum as the rotor settles on it's spring. Great fun;)
    16 Bumpers.jpg

    Waiting on a crystal and strap now.

    Cheers, Chris
     
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  7. wsfarrell

    wsfarrell Nov 14, 2015

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    Hey kids, that's a nice dial!
     
  8. ChrisN

    ChrisN Dec 5, 2015

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    Finally picked up a new crystal and red leather strap and after giving the chrome plated case a little hand polish, it came up nicely.
    Finished.jpg

    Have run it for a couple of weeks on the bench and it's within a minute or so. Not too bad at all and Mickey approves...
    Finished Mickey.jpg

    Bit of inspiration from @MikiJ there.

    Right, enough messing around with stuff like this, I need to get myself another Omega project watch, although I've had no time for ages. Back to eBay...

    Cheers, Chris
     
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  9. Geo!

    Geo! Dec 5, 2015

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    I enjoyed that wee adventure Chris and an excellent result, thanks for sharing. :)
     
  10. vinn2

    vinn2 Dec 5, 2015

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    nice job. good work. - lube oils;you can read up on the history and and use of watch oils,but here on mickey; use shaft oils, detergent, multi - viscosity or regular weight engine oil. its the shaft clearance that determines the weight to use. on mildly worn clocks i use 40 wt. oil rather than re-bushing.
     
  11. ncstate1201

    ncstate1201 Nov 20, 2016

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    That's great those Bradley Mickey mouse watches are tanks. This was my first watch when I was a kid, I still have it. It looks NOS almost. And still runs (knock on wood).
     
  12. Lukeeesteve

    Lukeeesteve Dec 3, 2016

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    Lovely DIY project. Great descriptive writeup.
     
  13. wsfarrell

    wsfarrell Dec 3, 2016

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    It'll be "Aunt Buck" if he gets that chainsaw started.......