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case_ventura Added a comment about bike check Campmajó MYOTRAGUS DH
7/27/2026 1:48pm
There's an animation on the website. Looks like the axle path goes straight up and back and the idler lets the chain expand under compression to minimize pedal kickback. Really cool design.
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This bike check has 11 comments.
moridinbg Liked a reply to forum topic Suspension Data Acquisition
5/1/2026 12:11am
I love the DIWhy vibes from the last few pages 😍 I have been working a lot on the App and the Firmware for the mast month or so. I have made a lot of progress into packaging it into end to end usable, both on desktop and mobile. Major changes Live data! Now you can stream the sensor readings from a connected DAQ in more or less real time (20-30ms delay). You can set the time on the DAQ and you can edit and replace the configuration, without dealing with memory cards and text files! You can also change...
This forum topic has 512 replies.
benconnor Liked a reply to forum topic Suspension Data Acquisition
4/13/2026 11:29pm
So I sacrificed a string pot on the altar of science. TL;DR: So far, the results are encouraging. I used a lathe to drive the pot via an offset crankpin, allowing me to calculate the theoretical string trajectory exactly, and the maximum velocities and accelerations at different lathe speeds. The downside of this arrangement is secondary vibration: because the string oscillates vertically, its inertia introduces an error that gets larger as the speed of rotation grows. The good news is that, because it isn’t something the pot will experience in real use and occurs at mid-stroke, I think it can...
This forum topic has 512 replies.
benconnor Liked a reply to forum topic Suspension Data Acquisition
4/7/2026 11:40pm
Sounds like what's needed is a roll-your-own string pot that can be built for about $10... coming soon to an open-source data acquisition project near you. Maybe. This guy runs on the bench and can either emulate an analog pot or be read over I2C. It's built around an as5600 encoder: that plus a couple of bearings, a spring from a key lanyard, a 3d printed spool and a short piece of chrome shaft pulled out of an old scanner make up the driveline. It's multi-turn which keeps it compact (and the inertia low), but at the cost of having...
This forum topic has 512 replies.
