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  1. Amadeus Sep 3, 2018

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    Going through my inventory I've found 3 Speedmaster crowns with exact same measurements but all 3 with different logo design.

    Why do all 3 crowns have 32 teeth?
    Why do they have different logo?
    Are they from different age of made?

    Here are the dimensions of the crowns:
    Tube: 2,5mm
    Diameter: 6,75mm
    Height: 3,75mm
    Stem size: 1,00mm
    Teeth: 32 (all 3 crowns).

    If someone could answer any of this questions I would be very grateful. Thanks in advance.

    IMG_4988.JPG IMG_4992.JPG
     
  2. SpeedyPhill Founder Of Aussie Cricket Blog Mark Waugh Universe Sep 6, 2018

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    First of all there're Speedmaster crowns with 24 teeth and crowns with 32 teeth... both have been used randomly but 1968 onwards mostly 24 teeth crowns have been used. Narrow Omega with flat feet are the oldest logo types...
     
  3. SpeedyPhill Founder Of Aussie Cricket Blog Mark Waugh Universe Sep 6, 2018

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    @padders
    I was speaking in general for all Speedmaster made between 1957 and 2018... 24 teeth & 32 teeth crowns were produced.
    The photo shows 32 teeth crowns with the oldest being number 3 (narrow logo feet), then the number 1 followed by the late 1960s number 2
     
  4. kov Trüffelschwein. Sep 6, 2018

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    Number 3 is the crown I've often observed on 105.012s but it is not what I would call "flat feet" to avoid confusion with the real (pre-1968) flat feet crowns.

    1&2 generally observed on 145.022 from -69 onwards.
     
  5. padders Oooo subtitles! Sep 6, 2018

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    Yes sorry I misunderstood, hence my deletion as we cross posted. You are of course correct, though the difference in logo size throws me sometimes.
     
  6. SpeedyPhill Founder Of Aussie Cricket Blog Mark Waugh Universe Sep 6, 2018

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    Indeed @kov
    Narrow Omega logo is correct not flat feet... here's an early flat feet for comparison: flat-feet.jpg
     
    The_Walrus and kov like this.
  7. The Master of Speed Sep 8, 2018

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    1 - 145022-69
    2 - 145022 70's
    3 - uncommon cal 321