Transmission Ideas (Help)

I am thinking of making a transmission on my robot because right now I have a very standard design. I have experience in the way a transmission works but I have never made one on a U frame. If anyone has any ideas or knows a thread or post that has what I am looking for I would be incredibly happy if you shared it.

The transmission would be for speed and then would switch to power.

How many motors are you using? What gear ratios do you want? How many gears do you want? What are your space regulations? I would start by looking for inspiration from team 44. :smiley:

Heres my transmission from toss up worlds. My base never overheated even when pushing so I think it’s a good place to start. I’ve also added green egg’s transmission in their reveal video.


https://www.youtube.com/watch?v=pbDi2ORiDyE&list=UUQUZr-i-qUIhgvRNCcbOuTw

[https://www.youtube.com/watch?v=Ox8MIW7khI8

Green egg’s transmission is better because it only has 2 sets of gears because the driven gearset is also the shifting gearset, as to of mine which were seperate. This has 3 benifits:
-increased torsion strength(this would be good for arm transmissions, drive bases it’s not neccessary)
-increased efficiency
-more compact

Note that it does require drilling holes into the shifting gear set however.](https://www.youtube.com/watch?v=Ox8MIW7khI8)

https://www.youtube.com/watch?v=pbDi2ORiDyE&list=UUQUZr-i-qUIhgvRNCcbOuTw

[https://www.youtube.com/watch?v=Ox8MIW7khI8

Green egg’s transmission is better because it only has 2 sets of gears because the driven gearset is also the shifting gearset, as to of mine which were seperate. This has 3 benifits:
-increased torsion strength(this would be good for arm transmissions, drive bases it’s not neccessary)
-increased efficiency
-more compact

Note that it does require drilling holes into the shifting gear set however.](https://www.youtube.com/watch?v=Ox8MIW7khI8)

This is what i am going to do hank you so much!!

Here is the Green Egg’s Sack attack transmission:

https://www.youtube.com/watch?v=eC_tcbsR2HU&list=UURUYPSwXv1Wsdu7qxutqsIQ

Just additional resources, and you can see the shifting a little better in this video. :slight_smile:

Good luck with your transmission.

If your robot is not very heavy, consider pneumatic hybrid tank/holonomic drive train. I initially saw it in AURA’s video and tried to design it, but never got it done. This year I saw a live working one made by team 5854B, and it was effective. They would expand and increase speed and maneuverability when building skyrise and retract to push cubes.

I remember seeing a very neat planetary gearing video on Stanley’s channel if I am not mistaking. In VEX planetary gearing has to be done using chains, but it is nonetheless a type of working transmission to consider.

I like transmissions very much, I always think that they are cool if built properly. But honestly, I think that transmissions are less important in skyrise comparing to two previous years, especially toss up. Toss up is much more vigorous than skyrise, and a team has good reasons to have both the speed to attack and the torque to defend/push away defending robots. Maybe at worlds we will see much better field goal battles, when teams can stack up 60 pts. of skyrise tower with ease and the game changer is just field goal. But I would suggest that never let your transmission take up too much space and hinder you design.

I’ll attach some videos later. School internet blocks youtube…

It’s this one: http://youtube.com/watch?v=pYeP_2jLfLU

The planetary gear-shifter you’re referring to doesn’t work because the slower setting actually doesn’t yield higher torque in absence of a shifter that locks both motors in sync. Don’t figure it out the hard way :stuck_out_tongue: