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Help make a quacking noise in a wooden toy duck (mechanically, not electronically) Answered

I'm in the process of recreating the LEGO wooden duck toy.

I'm only working from a few images I've found online, however; I don't have an actual one to examine.

On the originals, the axles operated a couple of mechanisms: the duck head pivots to open and close the beak, and there's a mechanism under the base (I'm assuming) that makes a quacking noise.

I've got a pretty good idea how to create a simple cam for the head/beak movement, but I'm not sure how to generate a quacking noise mechanically. My online searches have proved fruitless.

Does anyone happen to have one of these vintage LEGO ducks and is willing to snap and share some photos of the mechanisms?

Or, does anyone have any good ideas how to make a quacking noise mechanically? My thoughts are a push/pull rod-type crank attached to an axle, but on the other end of the rod . . . not sure.


it's the trojan duck. That quacking is the soldiers inside.

What does the ducky say?

"Clack clack"

Close enough! I like that little mechanism.

On closer inspection, that looks like it would make a "clackclackclackclackclack" noise, but really quickly. Almost like a RRRRR noise. Hmm. I really like this direction.

Thanks for spotting that and linking me to it.

I had one of them as a kid until our dog decided to use it as a chewing toy, not from Lego but similar shape.
I kept the sound thingy as I liked playing with it.
Was nothing but a simple cylinder with a piston.
On top was a metal reed valve similar to what is used on a harmonica.
The top itself was quite thin and must have acted as a resonace chamber because the pitch of the sound increased with the piston going up.


2 years ago

Have you specifically searched "duck call" ?

My grandfather had a little mechanical duck call he gave to us as kids; it was nothing but a wooden cylinder, with a small pot-metal piece that fit in the end. Turn that metal piece (like a key) and the two parts rubbed together, making a little birdy sound. Sure, it took some practice so it wasn't automatic, but it worked...

Ooh, good idea. I had not thought to do that, but will certainly go down that path to see where it gets me.