[MOC] 12 Speed Rotary Gearbox

[TechnicBrickPower]

Here I present my 12 speed gearbox design. The gearbox implements 3 reverse speeds, a stop gear (zero speed), and 8 forward speeds. The forward speeds range from 0.307 to 1.2 and reverse from -0.067 to -0.36. The gearbox has a single gear lever to drive two rotary selectors to select the gears. Let me know if you like it, have any comments or questions.

 

[Bluehose]

You have to open a blog for all these creations, so when someone need one he find it

[1963maniac]

https://www.youtube.com/channel/UCyilAU6skfVwhkAFZICS9Cg/videos   That's his youtube channel.

[aeh5040]

Great stuff as always.  But only 12???

[vascolp]

Hi. As in your 4 speed gearbox, you use only one side of the driving rings. This seems interesting to me as it might reduce friction problems (maybe at the cost of a bigger size). Am I right?

[TechnicBrickPower]

On 6/24/2020 at 4:44 AM, 1963maniac said:

https://www.youtube.com/channel/UCyilAU6skfVwhkAFZICS9Cg/videos   That's his youtube channel.

Thanks 1963 Maniac! I have my own url now too which is easier to remember.. http://www.youtube.com/technicbrickpower

On 6/24/2020 at 9:26 AM, vascolp said:

Hi. As in your 4 speed gearbox, you use only one side of the driving rings. This seems interesting to me as it might reduce friction problems (maybe at the cost of a bigger size). Am I right?

Hi Vascolp. I am not sure to be honest - I have never measured the friction of a gearbox but that will be worthwhile doing. I don't think the friction will be a lot less as the central axes of the driving ring is still rotating and held in place by a liftarm hole.

On 6/24/2020 at 6:19 AM, aeh5040 said:

Great stuff as always.  But only 12???

LOL well trying to create some useful gearboxes for a change ;)