Drilling Holes in Gears for Standoffs

I designed a 2 Speed Transmission just for fun but decided I wanted to physically make it. I went for a designed inspired by 44F’s were the gears slide along some standoffs so you dont have axles poking around. im afraid of destroying too many gears and my teacher wanting my head on a pike. is there anyone with experience in something like this that can tell me what to do?

You might want to post a link to the design or your CAD drawing. I use a drill press to drill though things like gears.

I have this one https://www.amazon.com/Dremel-Workstation-Portable-Drilling-Perpendicular/dp/B00068P48O that I got in 2017 and I’ve been very happy with it. It will do 3/16" holes pretty easily.


Does your school have a machine shop and good machine shop teacher? If so, ask your machine tools teacher about sharpening a drill for plastics with a 90° point and zero rake angle. (and record this information in your engineering notebook about why “plastics grind” drills are a thing, and how you learned to do it).

You can certainly drill with a regular point drill, but the plastics-grind will work better, as it doesn’t have the tendency to “screw” itself into the plastic material.


this is what i want to do to the gears

Yep, drill press. Take your time while drilling them.

Post pictures when you get it working?


maybe! Thanks for the help!!

Who is 44F? the only 44 is Green Eggs and the number is retired as far as I know.

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yeah, thats the team im talking about. they have a vid from 2014 showing their worlds winning robot with a clip of the transmission in it

They definitely mean 44, and I am guessing they thought it was 44F because the robot is named “Fred” after the families grandfather. (May he rest in peace)

See standoffs going through gears here.


Toss Up year?

The robot is in our shop. specific photos can be made if need. I know one college team doing models of QCC2 robots, could put Fred VII ahead in queue for learning purposes.


thanks for shaking up gray cells!

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hold up, you have the robot in the video in your shop? can i have pictures? please?

Yes we do. I will ask our HS team to take pictures…

Leland & family was on flights with us from Worlds that year. Great member of the robotics community in the region.


wow, thanks so much!! tell them thanks as well!!

Yeah, lacsap is always bragging about his robot display case.


44 top shelf - literally :slight_smile:

that picture is in old shop - new shop (next room over)…

Sad thing, we do not have Battlebot Overhaul in shop - that was a six month visit (and left gouge in my car at the time driving it over :slight_smile: )…

I think it is important to keep bots around to inspire … This year we had surgical robot at our regional event. Nothing more hands on then practicing a gall bladder procedure!


oh and they did drill holes in the gears right? on 44

My guess is yes, but won’t know for sure until tomorrow. 44 and QCC2 success lies with precision work on robot build and coding. In one prototype we have of mechanism, the white nylon spacers were machined to be tapered and used springs from clutches. Robots and prototypes are a great reference library.


Imagine having the parts or budget to save all of your robots…would be nice.

44, QCC2 Skyrise and NbN robots are loaners to the club they helped mentor in past years and currently through key roles at events.

Three WalshBot robots are robots of significance for our club. One from three season, StarStruck, In the Zone, and Turning Point, that performed well. Those teams fundraised to cover cost of travel to Worlds, cost of bots and then some. District covers cost of my club advisor stipend, the rest for competitive robotics is elbow grease by students, family and community to sustain a program. Pre-pandemic I welcomed 60+ students from our school, and supported other middle schools in our district and continue to do so.

I think you have your calculus wrong, it is not just about budget/parts, but rather district commitment to robotics in general and from community to support kids interested to learn about robotics to thrive in so many dimensions beyond just VRC.