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  1. #1
    Join Date
    Nov 2006
    Location
    Darwin HowardSprings
    Age
    52
    Posts
    1,197

    Default Problem with design

    tonight i was drawing this clock up ,and struck a problem

    the grasshopper is too low , the small ?flip flop wheel? will hit the main escapement wheel (in blue ) ,

    has anyone had any experience with "gearotic" escapement , i basically imported it into CAD with the hole spacing's from gearotic 's plating files
    clock1.jpg




    only the minute cogs are drawn so far but the hour cogs will be identical , the hands will point in the opposite direction , and i will have to add counter weight to the hands

    i went with a 61:1 gear ratio's of , 2:1 (60/30tooth) , 2.5:1 (50/20tooth) , 2:1 (60/30tooth) , 6.1:1 (183/30tooth)

    the escarpment wheel is a 60tooth and was going to use a 1 second pendulum , so i can just mark the escarpment wheel for seconds hand

    so if anyone had made a grasshopper off gearotic designs , i would be very grateful to know how much higher you had to mount the grasshopper above the plans height
    and if any one knows any double pendulum designs )
    clock2.jpgclock4.jpg
    Attached Images Attached Images
    how come a 10mm peg dont fit in a 10mm hole

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  3. #2
    Join Date
    Feb 2012
    Location
    nsw
    Posts
    26

    Default gearotic grasshopper

    I think there is bug in gearotic.
    My current project has the default gearotic grasshopper and it works just as you expect.
    However when i went into gearotic this afternoon and used 60 teeth and 2 dp i got the same result as you.
    I havent gone into the bug reports yet

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