Introduction: Working K'nex Clock

This design keeps accurate time using a geared-down K'nex electric motor. Numerous closely-meshed gears provide smooth movement for the hands of the clock.

Blue Rod 232
White Rod 132
Purple Connector 128
Green Rod 120
Dark Blue Connector 98
Dark Grey Connector 80
Brown Connector 64
White Connector 57
Washer 44
Yellow Rod 35
Orange Connector 20
Yellow Connector 12
Green Connector 10
Black Rod 5
Blue Gear 4
Large Yellow Gear 3
Red Rod 3
Red Connector 2
Grey Rod 2
Red Gear 1
Electric Motor with gear 1

Total 1053

Scott is the original designer of this clock

Step 1: Motor House Part 1

Follow the pictures, pretty easy really.

Step 2: Motor House Part 2

Follow steps

Step 3: Front of the Clock

Starting the base for the front portion of the clock.

Step 4: Fitting Together

Don't relax yet, the hard bit is still to come!

Step 5: The Fiddly Stuff

THIS is the hard bit. These are all the axles used.

Step 6: Support Structures

Not essential, but I advise you to add them as they make the clock more sturdy and make it look nicer.
Also remember to give credit to Scott!

Step 7: Coming Soon...

-The Big One (Sniper Rifle)
-D.I.Y audio amplifier (Damn, wont be ready for the art of sound contest!)
-D.I.Y light sensitive alarm
-N.A.S.A rocket model + MRL flagship + N.A.S.A space shuttle


Ryan444 made it! (author)2017-03-20

wow, this is truly amazing!!!!!

Laurence2 made it! (author)2016-03-31

nice clock but if you don't have that motor can you use a different one or no?????

MisterBukweet made it! (author)2013-11-29

I'm sitting here watching time fly by on this clock... Awesome build..

knexpert#10829476 made it! (author)2013-01-07

So awesome! How did you manage to get it so accurate?

rlaxrlax made it! (author)2011-12-28

should it be reallly wobily at this point?

Lowney made it! (author)Lowney2011-12-29

Well it's not the sturdiest thing in the world at this point; it should be wobbly but not to the point where if you let go it would collapse.

lemonpickle made it! (author)2011-06-08

huuuhhhhhhhh what knex piece do u not have

jingo69 made it! (author)2011-05-29

I have been waiting for the day, someone made a K'nex clock this is JUST AMAZING!

Lowney made it! (author)Lowney2011-05-29

Thanks, I'm not the original creator of this, I simply brought it to instructables to give it the views it deserves :)
Also, I would greatly appreciate it if you check out my latest forum topic :D

jingo69 made it! (author)jingo692011-05-30

I will =D

killersir751 made it! (author)2011-03-05

You buzzkill.
I've wanted to make a k'nex clock for ages and now i finally find one, and it uses too many pieces and some pieces I've not even heard of.

Kruegem made it! (author)2011-01-24

awsome once i get enough nex im building it

verypoopy made it! (author)2010-07-25

does it acully work???

Lowney made it! (author)Lowney2010-07-27


H1T4TCH1 made it! (author)2010-07-16

finally, A KNEX CLOCK!

CrazyCHRIS!! made it! (author)2009-12-20

what is the website this was on, they have lots of other projects too

Lowney made it! (author)Lowney2009-12-20

Google "Scott's knex design Gallery"
It's one of the first ones

CrazyCHRIS!! made it! (author)CrazyCHRIS!!2009-12-20

thats it thanks

Knexwizard made it! (author)2009-07-03

do you have to use that exact moter?

The One and Only made it! (author)The One and Only2009-07-04

Apparently the motor used in this ible has an rpm of 30. A battery powered one (red battery pack, clear engine) has an rpm of 32 rpm, so there isn't too much in it.

Knexwizard made it! (author)Knexwizard2009-07-04

so you can use the other moters?

The One and Only made it! (author)The One and Only2009-08-03

Um not really no, as that one little difference will be enough to make this clock useless.

Schober made it! (author)Schober2009-12-01

The motor used in this Instructable has both an high rpm but also a fairly high torque. When geared down from the worm gear the speed may decrease greatly but the torque goes through the roof and is quite difficult to exceed with K'nex. On the other hand the battery powered motors have both a low rpm and a low torque. When the resistance exceeds the torque of the motor the rod slips around in the drive holes clicking off of the locks. This renders the motor useless as The One and Only stated. I'm not sure but I would guess that the resistance in this project would be far greater than the torque of the battery powered motors.

Lowney made it! (author)Lowney2009-07-03

It would be ideal yes, although you could alter the gears to accommodate a battery motor. Perhaps a gearbox could work:

Knexwizard made it! (author)Knexwizard2009-07-04


necropolian made it! (author)2009-06-29

well, this is cool. i should make it for my clock collection...

Lowney made it! (author)Lowney2009-06-30

Did you know there is an official k'nex clock set? It features the ULTRA RARE green gear

necropolian made it! (author)necropolian2009-06-30

no, I didn't. but now, I do. thank you. too bad i don't have those large gears...

Lowney made it! (author)Lowney2009-06-30

You can buy the clock set if you're really interested. It is called simple machines deluxe (I think) and it has a ball machine and a clock.

necropolian made it! (author)necropolian2009-07-01

no, i am not really interested. but it is cool. and, by the way, with "clock collection", i mean the four clocks at my bed who should wake me up on time...which they don't.

Lowney made it! (author)Lowney2009-07-01

Same problem! What I do is get a classic alarm clock (two bells at the top with an analogue face) and put it by my door. This means that the only way to turn the alarm clock off is to get up and shut it up. Victory!

necropolian made it! (author)necropolian2009-07-01

my clocks are set in different time zones. and i forget to set them on my timezone. but, i know the time in: London New york Brussel Japan ( i don't know why) and one of them is a radio too, so (if it works) it wakes me with NPR. but most times is stays still...

Lowney made it! (author)Lowney2009-07-02
necropolian made it! (author)necropolian2009-07-03

no, they're just normal digital clocks.

Lowney made it! (author)Lowney2009-07-03

No I was recommending them. Clocky will certainly wake you up!

necropolian made it! (author)necropolian2009-07-04

i always wake up at around 6.30 in the morning. on my own. that's the best clock you can have. your brain. but then, it always scares me when my alarm clock goes off... imagine, i wake up, i stay in my bed to relax a bit, and suddenly, on a very high volume.... "next on 'all things considered', the death of micheal jackson"....aargh!

Lowney made it! (author)Lowney2009-07-04

lol, try the sonic bomb clock! (113 decibels!)

necropolian made it! (author)necropolian2009-07-05

do you know there's a silent refrigerator, wich works with 190 (!) decibels. connect it's speaker ot your clock, and...boom! your hair's on fire!

their site:

Lowney made it! (author)Lowney2009-07-05


necropolian made it! (author)necropolian2009-07-06

it's the solution for the bad hairday...

Schober made it! (author)Schober2009-12-01

If this doesn't wake you up nothing can.

pk_excel made it! (author)pk_excel2009-07-06

Where can you buy simple machines deluxe? I'm australian so i'm not sure i'd be able to get it

Lowney made it! (author)Lowney2009-07-06

I'm not actually sure about australia. If you find a piece list you could buy all the necessary parts separately. The other model in the set is that big ball machine (not the big ball factory).

Seleziona made it! (author)2009-11-02

 awwww, i don't have that motor.....

Lowney made it! (author)Lowney2009-11-02

Shame dat

Seleziona made it! (author)Seleziona2009-11-02

 yeah eh....

black_hawk-69 made it! (author)2009-10-30

 can you use any moter or only that one?

Lowney made it! (author)Lowney2009-10-31

Only this one I'm afraid. This has more torque (needed) and has different rpm than any other.

knexjay made it! (author)2009-10-30

thank you Scott!

kurtcobain132 made it! (author)2009-07-12

in my opinion this is by far the BEST knex Instructable on this site!!!!!!!!!!!!!!!!!!!!!

About This Instructable




Bio: I make instructables. I also have a YouTube channel at!
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