Toughbox Assembly Video on YouTube

An assembly video for putting together an AndyMark Toughbox is now available for viewing. This is a 10 minute video, and provides step by step instructions in putting one of these simple gearboxes together. It is a long video, but you may have a chuckle or two when you watch it.


Andy B.

Encore, encore … my boys have new heroes. Jake can’t stop watching and Aric keeps saying, “She took the drill…she TOOK the drill!”

I’m gonna have to call child services about that labor crew you have there! :wink:

Also love that you can mount the motors without opening the gearbox back up.

I was wondering why the gearbox was closed without the motors–then I saw Kyle and Nick putting the motor in and was like, wow! improvements again!

Great video! Putting together a Toughbox looks really simple to do, but this video makes some of the trickier parts very clear.

I see you’ve posted the link to the video on the Toughbox page on too.

Between this and the IR Board video shown at the Kickoff, I’m excited to see these explanatory videos that show how otherwise intimidating parts are really quite simple!

Wow!! All I can say is, Thank You. That was fun AND educational.

So simple, a child can do it!!! (Well, OK, maybe with a little help). :smiley:

One question, is there a provision for attaching the Gear Tooth Sensor to this already? Or, is that up to us to figure out?

Darn, people already beat me to the obvious puns. I must improve.

I’m not sure if our plans include the AM Toughbox on drive, but I’m glad to see a design with a solid pedigree in the kit this year. Keep 'em coming!

Yes… On the “Toughbox User Guide” we show how to assemble it with the motor mounted to the polycarbonate plate first.

When we took 24 of these to FIRST this summer, Kate Pilotte mounted the motor when it was still assembled and she preferred that way also. So… yes, there are assembly options.

Andy B.

Thanks a lot Mr. Baker.

I’m going to have the kids assemble these monday and add them to the kit chassis. wahoo rolling chassis in 1 day.


Congrats on the video as well as the use of your children.

My personal belief is that any time we can show 1) how simple things can be done, 2) that females can do it, and 3) that younger age groups can be involved are all furthering the goals of FIRST.

Thank you, sir!

Robert Hatchett
Mechanical Engineer
Mentor of Team 1262

How do we mount the CIM and the Transmission box? Any suggestions?
Team 2116 RobotFutures


No excuses anybody…

if 2 little girls can assemble one of these, you have no excuses to say you can’t… Let your programmers figure one of these out, raise their mechanical self esteem.

lol, great work ladies!

The kit frame contains transmission mounting plates.

Good question. I was wondering that as well. Based off the CAD drawings and not physically having the materials in front of me I couldn’t figure out how the plates get attached to the transmission. I plan on tinkering around with the parts to figure it out but if anyone has already mounted it and has some hints that would be appreciated.

Also, is there any suggestions on how we can interface the transmission with a encoder? We haven’t had much luck with the gear tooth sensors and really liked the encoders that were on the Banebots Xmission last year. Any suggestions out there for a Andy Mark compatible equivalent?

Many Thanks!!!

Great video and great product as always! Thanks for taking the time to put this instructional video together for our younger teams. Please thank all of your product assembly instructors as well.

PS so in this video i noted why i have had trouble during assembly and what my teams have been lacking during build season: BACKUP DANCERS

thanks again for showing us all the way

Because I seem to have missed this, and don’t know too much about gearbox terminology (I’m ashamed to admit), What is the output shaft speed on a Toughbox when combined with say the CIM motor from the KoP?
I’m not sure of the output speed of the CIM motor either as of right now.

The 12.75:1 ratio is related to that magic end number but how?

Thanks to anyone who will take a moment and explain this.

Hi Elgin,

The Toughbox reduces input speed by 12.75 times. To find the shaft speed you take the input (CIM) speed and divide by 12.75.

Shaft speed = input speed / 12.75

The input speed depends on alot of things such as fiction, load and voltage applied. The CIM at 12 volts and no load is roughly 5000 RPM (off the top of my head).

If you are interested in how different voltages and loads can change the output speed, I would strongly suggest checking out the JVN design calculator sheet that is posted in the white papers section.

Best of luck,


Another nifty CIM number to remember is 88.5 rev/s. In the past, the FIRST documentation has rated CIM free speed at 5310rpm; if you divide by 60, you get 88.5rps. Knowing that number makes calculations with CIMs much quicker; how often do you measure mechanism/drivesystem speed in terms of something/minute? I would (probably) be willing to wager that it is much less often than measuring in something/second (ft/s, deg/s, m/s, etc). If you just remember 88.5 then you can skip dividing by sixty in your calculations, saving time. Especially useful if you’re sitting in the middle of Psychology and you feel a need to run some drivetrain numbers and lack a calculator… only a big nerd would need to do that though :rolleyes: Yes, I know I should stop doing it, but it’s so fun!