Robowranglers 2018 Uppercut CAD Release

We’ve gotten a lot of questions about our robot Uppercut this year. To help answer these questions we decided as a team to share the CAD of our robot as we prepare for the Houston Championship next week. We hope there are people in the community that will benefit from our work. If nothing else, we hope you enjoy poking around in the design – especially if you won’t be attending Houston Champs. If you have any questions feel free to stop by our pit next week!

You can find our CAD here.


Christmas has come early! Thanks for doing this! Is there any chance of a native Solidworks release?

Very Awesome!

Love the 3 stage elevator using round tube. This will def be our offseason project.

How many rivets have you consumed so far this season? I would guess at least 10 or so.

Even a couple of sample parts would be pretty valuable as a teaching tool - “look, all the sketch elements are constrained! All black everything!”

Jokes aside, this is a fantastic release - thank you for letting us all get up close and personal with this awesome bot!

I’m astonished by how much every single part has been lightened. Looking at the CAD, I’ve got a few questions.

I notice your tubes are only 1/32" wall thickness… Has that given your team any problems with bending or deforming?

Also, how were the round plug inserts from the ends of those tubes made? 3D printed?

Lastly, if there were any modifications you could have made, what would you have done differently?

Thanks for sharing an incredible bot.

+100. The lack of good native CAD files often makes me sad.

It would have been helpful if you had posted this a few weeks ago :wink:

Instead, we had to do it the hard way. We nicknamed our rebuild Lowercut in reference to your robot’s name. Thanks for the design inspiration. We learned a lot in the process. We are big fans.

Our original bot from week 1:

Our practice bot after rebuilding this past week for PCH District Champs (the intake was a week 2 modification that was actually a 2363 inspired design):

thank you all so much for posting you’re cad files. it is really inspire ring to go through the design choices made and is the next best thing for those who (like me) can’t go to Houston to see the robot irl because of the distance and $.
good luck to you all.

Tristan Shepard

Not on 148, but 469 ran a 1/32" round tube elevator in 2011. We had minor denting when the carriage took a straight hit, but no issues through normal usage.

Same here :rolleyes: 5254 used 148’s intake as heavy inspiration when redesigning between our regionals. The way your intake flips the cubes up into the robot and supports them on the bottom slightly was something we really liked to add that little extra height for the high scale placements.

Our redesign started out with a very rough prototype to prove the cube flip move would work (if you can count a cardboard box in the old intake a prototype). In the end we ended up using some very similar concepts for our cube flip, the 180° intake arm deployment, and the “drinking bird” from 148’s intake. Thanks for the inspiration for such a cool design, our students learned a lot from looking at the decisions you made, now we’ve just got 8 more iterations to go.


First off, Thanks 148 for posting your CAD as resource for other teams. 5460’s Version of the 148 inspired intakes. After analyzing the release video and various pictures, this is what we came up with.

Will we ever see the CAD for the other versions of intakes like MK7/MK8?

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Lotta nonagons happenin’ there.

First of all, wonderful CAD model. I have been studying it for a while and definitely taking notes.

Second, I have a question. Why the encoder on both the top of the first stage elevator chain AND on the gearbox that drives it? It just seems to be redundant to have two sensors on one operation if both sensors are returning the same value.

Redundancy in design provides flexibility in real-life.
(We only used the “top” encoder on the actual robot).

I can’t gloss over the use of VEXpro sprockets as hubs (1" OD on the hub) for the fairlane wheels (1" ID from mcmaster), that’s pure genius, seriously that’s amazing.

P.S. when embedding imgur photos you can change their size by placing an m or l before the period of the file extension.

Thanks, we found that using a little bit of red loctite and press fitting them in, the sprockets work perfectly as hubs and didn’t come loose all season.

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Don’t mean to bring up an old thread, but I had a question about how your intake flips out at the start of the match. Is this done using a spring/surgical tubing and released via some latch? Won’t have a chance to check out the CAD until tonight.

Thanks in advance!

From JVN’s blog “The two intake arms are spring-loaded forward with surgical tubing. Before the match we flip them all the way around backwards. There is a post mounted on the top of the drivetrain back there which the spaaaaace wheel rolls around. So when we power the intake for the first time, it rolls past the post and springs forward.”

Thanks for the info! That’s a simple and effective solution!