Picture of 100% Lego Clock
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After looking for Lego designs, I found one for a Lego grandfather clock. This gave me the idea for to find an analog clock design, but there were none geared from only legos. So, after a few failed attempts, I made one myself and it works great. 
The first 6 pics are overhead shots and finished product.

the rest are photos of construction. 

Use Motor 71427 (output 360 rpm)! 
This is my entry for the Clocks Challenge, so if you like it please vote it up!
rossreed3 years ago
you should try making one with concentric arms. i designed one a few years ago using a turntable for the hour hand.
steveo20113 years ago
Your fingers look like they are made from wood....
instructoman99 (author)  steveo20113 years ago
haha nope they're real.
ShadoKing993 years ago
instructoman99 (author) 3 years ago
Sure, No problem. Each number cooresponds to the teeth on that gear.
RPM 360 - 20
1 rpm-------------------36 <-1rpm or Second Hand
1/60 rpm -> 16 <--- minute hand

-----------12 <--- 1/720 rpm or hour hand

instructoman99 (author)  lemonie3 years ago
You're welcome.
lemonie3 years ago

Since you must have worked these out: what are your gear-ratio?
Last time I thought about this I didn't have the right gears....

instructoman99 (author)  lemonie3 years ago
I realized my post wasn't a reply and just wanted to let you know it was there. ^^^^