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About a year and a half ago I became obsessed with the desire to build a
functional mechanical clock out of legos. Somehow I was able to get my
friend Scott cought up in the madness. After 2 previous versions and many
frustrations and a few months off inbetween we finally have something to
show for the countless hours of play:Approximitly 28 hours of runtime with a
2 second period pendulem.Unfortunatly lego does not sell individual parts so
large projects get expensive,Because of this I've been forced for the time
being to settle on a wall clock opposed to a Grandfather Clock.For ease of
monting and future access my clock is built ito two main parts.
The clock itself is the first part and it is regulated by a pallet and a
84 toothed escapement(2 42 tooth lego gears from the 1970's gear set 001,the
pallets are built with 2 1x2 tripple slopes)which is synchronized threw a
quickrelease to a second hand.The second hand then drives the rest of the
clock.The quick release enables the clock to be set.The clock also has a
cogwheel that allows the wench to be wound.
The second part mounts to the wall via drywall skrews into a stud.This
part contains a 5 pully block and tackle and winch conected to the drive
weight(non lego string and weight)the winder for the clock(I seperated the 2
parts of a 56 toothed technic turntable for this purpose)and a contraption
that lays the string back and forth on the winch during winding, the
pendulem also stays on the wall.
As soon as I figure out how to build a lugnet page I'll go into greator
detail and post quality pictures and a movie.For now you can go to
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=8896
If anyone is interested I plan on makeing a .dat file
Thanks to
Leo Dorst http://carol.wins.uva.nl/~leo/
Amnon Silverstein
http://www.best.com/~amnon/Homepage/Games/LegoClocks/OtherClocks.html
and Robert Munafo http://home.earthlink.net/~mrob/pub/lego/gears.html
Whithout these sites my clock surely would not have been completed.
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Always interesting to see a new clock. Cool.
I just purchased some of those big old gears with the thought that the
larger teeth might make them useful as an escapement wheel (they're in the
mail from the ebay seller right now, hopefully!). I'd love to see a .dat or
a closer picture of your escapement.
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Don I don't have a .dat file for the 42 tooth gear I have it for the 14,21
and 35 if you have it send it to me and I'll get to work on a .dat for the
escapement and pallets. This is a picture of the triple slope used for the
pallets http://www.brickbay.com/P/9/3048.gif
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Hi
This is a .mpd of the spaceing I used in my 84t escapement.
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=13958
Thanks abain to Tore Ericksson for authoring x744.dat
Regards Chris
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In lugnet.technic, Chris Daniel writes:
> The clock also has a
> cogwheel that allows the wench to be wound.
But she'll never admit it!! Brilliant clock, by the way!!
ROSCO
FUT .o-t.fun
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"Chris Daniel" <ldaniel2@prodigy.net> wrote in message
> The clock itself is the first part and it is regulated by a pallet and a
> 84 toothed escapement(2 42 tooth lego gears from the 1970's gear set • 001,the
> pallets are built with 2 1x2 tripple slopes)which is synchronized threw a
> quickrelease to a second hand.
I'm dying to see the details of that escapement!!! Let us know if you get a
.dat done of just that! I started a clock, and gave up after realizing I'd
never get the efficiency I needed using an axle-sprocket based
escapement.... You are a genius to put the old 42 tooth gears to work.
28 hours!!! That's got to be a lego record. How's the accuracy?
Bravo! I'm writing santa now to let him know I want the .dat file for this
clock :-)
Simeon
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The bob I used on the pendulem is for the time being only adjustable by
standard lego spaceing so for the time being after a 24 hour run my clock is
off by 4 minutes I've uploaded a .dat of the pallets I used.
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=8896 I need help finding or
makeing the 42 tooth gear so I can finish the escapement.
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I've uploaded higher quality images of my clock and deleated the old ones. I
also added a small text document of the geartrain next will be a .dat file
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=9454
thanks Chris
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The second hand is a nice touch. With that long pendulum and a 15-lb drive
weight, now I see how you get it to run for a whole day!
Meanwhile, my big old gears have arrived, and I'm fiddling around...
In lugnet.technic, Chris Daniel writes:
> I've uploaded higher quality images of my clock and deleated the old ones. I
> also added a small text document of the geartrain next will be a .dat file
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=9454
> thanks Chris
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Hi everyone, Just thought I would post a link to a pov generated annimation
of just the gears and rods that make up the top of my clockwork.
http://www.brickshelf.com/cgi-bin/gallery.cgi?m=banana
I will upload a animation with the hands included in a week or two I have
also uploaded a .dat of the top of the clock.
hope you enjoy:-)chris
p.s.
Don sorry the escapement is'nt finished yet:-( but Tore Eriksson just sent
me a nearly compleated 744 dat so hopefully you won't have to wait long.
How is your Escapement comeing?
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Hello,
I have just uploaded a .avi of my lego clock in action.
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=9454
I hope you enjoy it!
chris
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In lugnet.technic, Chris Daniel wrote:
> Hello,
>
> I have just uploaded a .avi of my lego clock in action.
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=9454
>
> I hope you enjoy it!
Hello everyone
I believe Brickshelf ignores .avi files now so Philo Hurbain
http://philohome.com/index.htm graciously offered to host movies of my gbc
modules. So I weaseled this one of my clock in too.
http://philohome.free.fr/misc/lego_clock2.avi
movies of my modules will follow.
Thanks Philo you are a gentleman and a scholor
Chris
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