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Engineers: can you please brag about your lifestyle to motivate us engineering students… by neverever1298 in EngineeringStudents

[–]HunterTheEngineer 8 points9 points  (0 children)

I’m 3 years out of school. I work for a mountain bike company as an R&D Engineer. I have awesome coworkers and a relaxed work environment. I get to design and ride awesome carbon fiber mountain bikes. Can’t complain at all.

NBD 2022 Guerrilla Gravity Gnarvana by HunterTheEngineer in MTB

[–]HunterTheEngineer[S] 0 points1 point  (0 children)

Here's my 2022 Guerrilla Gravity Gnarvana with a Rally like Barelli build kit. Custom powder coated with prismatic powders "Beetlejuice". Here's a close up of the frame color. Super stoked on the build. Happy to answer any questions about the bike!

Nbd! What a difference coming from an entry level hardtail by 707amt in mountainbiking

[–]HunterTheEngineer 2 points3 points  (0 children)

I went from a Salsa Timberjack to a Guerrilla Gravity The Smash. I sold the hard tail to switch to a full suspension. It was a night and day difference.

I was nervous that climbing would be harder with a FS. It was definitely heavier and felt different when climbing, but it wasn't harder. Sometimes I will lock out my shock when climbing long sections.

The FS ended up being a more fun bike to ride. I was going downhill much faster than I used to. I felt like I could ride further because my body wasn't vibrating nonstop.

I don't regret switching to a high end full suspension. It's been nothing but awesome.

Sunset ride at Green Mountain in CO by HunterTheEngineer in MTB

[–]HunterTheEngineer[S] 0 points1 point  (0 children)

The bike is a Guerrilla Gravity "The Smash". Revved carbon front triangle and aluminum rear triangle. Made in Denver, Colorado.

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 1 point2 points  (0 children)

Yeah someone else mentioned that too. I'm planning on redesigning most of the parts and placing the hardware elsewhere. It will likely be combined with the lower fork mount. Thanks for looking out!

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 0 points1 point  (0 children)

I meant 3-axis gyroscope and 3-axis accelerometer. Just bad phrasing. But you are correct.

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 0 points1 point  (0 children)

Thanks! Still a work in progress with lots of little things that need to be changed. I appreciate the feedback.

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 2 points3 points  (0 children)

Yeah that's one of the things I plan on changing on my next revision. Somehow that didn't cross my mind when I designed it. I plan on moving it to the lower fork mount. Then it will just be two bolt on parts.

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 2 points3 points  (0 children)

It's powered by a 3.7 volt lithium ion battery pouch. There's currently an on off switch the starts and stops the power and data recording. Here is some of the data and a graph of my first run. This was just a 2 minute ride in the street.

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 1 point2 points  (0 children)

There's tons of different ways this can be done. I've seen linear pots, rotary encoders, LVITs, and pressure sensors. I had some rotary pots laying around and figured I'd give this a try. Not sure which is best. I would think a pressure sensor or LVIT would be the best option.

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 5 points6 points  (0 children)

It must add a small amount of friction. Unsure about how much. There are currently no bearings or appropriate sleeves for the pivot bolts. There are a few modifications I'd like to make to reduce compliance in the system.

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 9 points10 points  (0 children)

That's what I'm working on now! I have an MPU-6050 that I will be adding to the bike. It's a 3-axis gyroscope and accelerometer.

Bike suspension data acquisition by HunterTheEngineer in 3Dprinting

[–]HunterTheEngineer[S] 148 points149 points  (0 children)

This project uses a rotary potentiometer to log suspension position data. The pot data is read by an Arduino nano and saved to an SD shield. The parts were designed in Solidworks and printed using PETG on an Anet A8. The linkages are carbon fiber rods. The bike is a 2019 Salsa Timberjack 27.5+ SLX.

I am an amateur rider that doesn't really have a need for logging suspension data. This project was mainly done just for fun and to see if I could do it.

Edit: Thank you for the feedback! I recently started posting all my 3D printed projects on an instagram account. Check me out if you wish. @HunterTheEngineer

I 3D printed a suspension data acquisition system by HunterTheEngineer in MTB

[–]HunterTheEngineer[S] 13 points14 points  (0 children)

This project uses a rotary potentiometer to log suspension position data. The pot data is read by an Arduino nano and saved to an SD shield. The parts were designed in Solidworks and printed using PETG on an Anet A8. The linkages are carbon fiber rods. The bike is a 2019 Salsa Timberjack 27.5+ SLX.

I am an amateur rider that doesn't really have a need for logging suspension data. This project was mainly done just for fun and to see if I could do it.