Mountain Bike Data Logger - Crank Speed Sensor for Cadence
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DIY Sensor to Measure Crank Cadence; part of Mountain Bike Data Logger Project
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Outdoor Sports
- Licencja
- Creative Commons — Attribution — Noncommercial
Background:
This is part of a much bigger system design which is detailed here: Mountain Bike Data Logger
Detail:
The crank speed sensor, cadence sensor, is mounted using the standard ISCG mounts.
The part likely is compatible with other bikes that have ISCG mounts.
This is designed around a Transition Smuggler with a 30T aluminum wolf tooth oval chainring.
My chainring is aluminum so a "Factor 1" type proximity sensor is used to help detect.
NPN proximity switch is used to allow A/D cards to detect grounded signal.
Note: Added a "_v2" version for getting the sensor closer to BB center. Better for small, oval chainrings when BB space allows. Part installation identical.
Print Settings:
I used PETG with 60% infill. Organic supports were used but minimal need.
Parts Needed:
Fasteners Needed:
M6-1.0 x 14mm Flat Head Socket Cap Screws (standard for ISCG)
M3-0.5 x 12mm Standard Socket Head Cap Screws
M3-0.5 Square Nuts
Installation:
I didn't even have to remove the crank. Sensor mount can be loosened to allow adjustment to be close to chainring but not too close where normal flex will cause interference.
Disclaimer:
This is just an experiment and I make no claims or promises on safety. What you do to your bike is your business and your decisions. I am just giving ideas on how we can instrument our mountain bikes to learn. This project does add sensors very close to rotating components that could stop your bike quick. Install at your own risk.