Category: DIY

OpenAero – A open source design system for Bike Accessories

paschmann

After designing, building, rebuilding, and re-printing dozens of accessories for my bikes over the last few years, I wanted to create and share a open source design system for accessories for bikes that allows myself (and a community) to innovate and collaborate on these types of products. Here is a snippet from the readme file:

Our goal is to develop a modular mounting system for bicycle accessories — ranging from water bottle holders and lights to phone and cycling computers. Partially inspired by Gridfinity, this system provides a base platform and is intended to be stackable. The motivation behind the definition and open source nature of this project is to encourage community-driven design and innovation in the triathlon space. read more

DIY – Canyon Garmin Mount

paschmann

My second CNC project on the Carvera Air is a Garmin mount for my MTB. I have 3D printed these in the past, but thought it would be a good introduction to CNC. I also made a small water bed to cut the Carbon Fiber in to avoid the nasty dust which is generally made when cutting or sanding it. Fun weekend project!

Things can and did go slight wrong 🙁 This is what happens if the glue does not hold!

Carvera Air CNC

paschmann

Super stoked to have finally received the Carvera Air which I ordered on Kickstarter about 9 months ago!!! After doing a bunch of 3D printing and laser cutting with the Glowforge, I really wanted to test/try out CNC’ing and see what I could learn and build with a small desktop machine. I have been considering this for probably 4+ years, but never found the right machine or the intention to spend the money. Last year I decided to pull the trigger and after a long wait it finally arrived 🙂

First project was building a couple small parts to understand the workflow which I think turned out great. Overall, I am already really impressed. I think I will be constrained by the bed size, but will cross that bridge when I get to it 🙂 read more

Aero Bottle Cover

paschmann

A fun 3D print to Carbon Fiber project.

Designed in Fusion 360, 3D printed a mould and did a wet layup in Carbon Fiber. Pretty happy with the way it came out and impressed it held up even on the really rough NZ chip sealed roads!

There was a lot of trial and error on this due to the deep cavity and needing a vacuum to hold the material in place.

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Carbon Fiber Arm Rests

paschmann

This is my second pass at producing something strong enough and reliable enough to put onto my triathlon bike, and in this case some carbon fiber arm rests. My current arm rests pretty much did the job but at 300+g for the set, it seems like an easy win to reduce weight by making something similar out of CF.

The design for these took quite a lot of time, lots of trial and error and mistakes along the way 🙂 Cardboard cutouts, angles and long prints were the most tedious aspects, but ultimately I think they came out OK in the end.

Ideation and prototyping Steps

Tool/CAD Design


Mould 3D printing

These moulds had various finishes I was testing, everything from raw prints to epoxy coated. read more

DIY – Carbon Fiber

paschmann

After years of dreaming and ideating around making carbon fiber products of some sort, I finally had a need to build some custom parts for my triathlon bike. After spending a considerable amount of time reading, watching and listening to tutorials online, I took the plunge and purchased some starter materials. My initial plan was to work with 3D printed moulds and do wet layup.

I purchased a 3D printed started kit from Easy Composites. The shipping was a little expensive (they are based in the UK) but seemed to have the best products, prices and matching material requirements for my needs.

My first project was a simple chain ring cover (which would be the next version of the 3D printed aero cover I 3D printed here). The purpose of this cover is to streamline airflow over the crank while in motion to reduce the bikes Cda (Coefficient of Drag). aka. More slip streamed. read more

Arduino

paschmann

The Arduino was one of my first “modern” introduction into the world of open-source electronics. The original use case for my DIY IGUS Time Lapse slider, then got used in the Quantum Double Slit Experiment to build a true Random Number Generator, and was also a part of my SAP DemoJam session. It always seems to be a great “go to” tool for interfacing with physical sensors, wiring something simple up or testing out different electronics.