[MOC] 4 Speed rotary gearbox. Has this has been done like this before?

[TechnicBrickPower]

Hi Everyone,

I have created this 4 speed gearbox based on the "change over rotary catch" component and I have used it to select 1 of 4 gearing inputs in possibly a new way by connecting to four clutch gears which then connect to a differential housing used as a method to transfer motion whilst allowing the rotary catch to be rotated freely inside of it. The gearbox implements 3 forward speeds, and 1 reverse.

I was wondering if anyone has seen this technique before (I am guessing yes since most ideas are not new)? Anyway thanks in advance.

 

 

 

[Zerobricks]

I used something similar here:

 

[suffocation]

I used a similar layout here but in a distribution gearbox.

[aeh5040]

Of course differential housings have been used to transfer torque concentrically like this before, but I haven't seen it used in a gearbox quite like this.  Very neat and interesting!

In particular, Jennifer Clark used the diff technique in the 90s(?) to get two functions through a turntable a decade or so before TLG caught on to that idea.

[Didumos69]

9 hours ago, aeh5040 said:

Of course differential housings have been used to transfer torque concentrically like this before,

For instance in clocks...

 

[SNIPE]

I have tried it before but wanted an 8 speed so ditched it. it might be on eurobricks somewhere,

[TechnicBrickPower]

On 6/16/2020 at 11:12 PM, aeh5040 said:

Of course differential housings have been used to transfer torque concentrically like this before, but I haven't seen it used in a gearbox quite like this.  Very neat and interesting!

In particular, Jennifer Clark used the diff technique in the 90s(?) to get two functions through a turntable a decade or so before TLG caught on to that idea.

 

Thanks for your replies everybody. Great way to see old ideas dug up and presented again. I like the differential going through the turn table. That's a neat idea.

 

On 6/17/2020 at 8:58 AM, Didumos69 said:

For instance in clocks...

 

That's a very impressive build, especially the idea of creating pentagons.