Bike Sensors

Disclaimer: Technology evolves quickly.  The information on this page is likely already outdated.  It was last updated January 2025.

Bike Sensors

Bike Computers and link up with various sensors.  These may help with training and possibly enhance safety.

For the most part, these are unnecessary for Scout Outings. 

Products listed here so you can see what's out there. 

Of note, many Garmin and Wahoo sensors are cross compatible. 

Cycling Sensors

Speed Sensor 

• Garmin 

  • Speed Sensor 2

  • garmin.com/en-US/p/641230 

  • People reports easier battery access

• Wahoo

  • Wahoo RPM Cadence 

  • wahoofitness.com/devices/bike-sensors/wahoo-rpm-cadence-sensor 

  • People reports damge to device when trying to replace battery

• Magene

  • Generic sensor at half the cost

• Wraps around one of your bike hubs

• Measures speed

• Effected by bumpy roads

  • Garmin tries to compensate by matching with GPS...but results in delay 

• Useful when your computer is unable to link up with satellites

  • Such as when mountain biking in dense woods

  • Or when going through tunnels

Cadence Sensor 

• Garmin 

  • Cadence Sensor 2

  • garmin.com/en-US/p/641212 

• Wahoo

  • Wahoo RPM Speed Senso

  • wahoofitness.com/devices/bike-sensors/bluetooth-speed-sensor 

• Magene

  • Generic sensor at half the cost

• Wraps around your left crank

• Measures the speed of pedaling

• Useful for training purposes

  • Helps you maximize efficiency and performance by pedaling at the right speed

  • Helps you learn how to better shift

Combined Speed & Cadence Sensor

• Garmin 

  • Bundles their two sensors together

  • garmin.com/en-US/p/641221 

• Wahoo

  • Wahoo BlueSC Speed and Cadence Sensor

  • wahoofitness.com/devices/bike-sensors/wahoo-blue-sc-speed-and-cadence-sensor 

  • Unit mounts on rear frame between crank arm and rear wheel

  • Magnets are mounted to crank and spokes

  • When pedaling and in motion, unit senses magnets passing it

• Magene

  • Generic sensor 

  • Can be used as either crank or speed sensor

    • Reinstall batter to switches modes

    • Green light = Speed Mode

    • Red light = Cadence Mode

HRM 200

• garmin.com/en-US/p/1530957 

• Heart monitor

Rally RS200

• garmin.com/en-US/p/658593 

• Power Meters

• Specialty pedals that measure the force applied to a pedal while pedaling

  • Can be single sensing - just one pedal

  • Can be dual sensing - measures both pedals (twice as expensive)

• Measures cadence

• Measure how much force you apply to each pedal

• Incredible tool for training

• Cost is extreme - over $1000 for a set of dual sensing power meters

Varia RCT715

• garmin.com/en-US/p/721258

• Rear radar

  • Different models

  • With or without rear light

  • With or without rear camera

• Radar

  • Detects vehicles approaching 153 yards (140 meters) away

• Light

  • Claims visibility up to 1 mile away in daylight

• Camera 

  • Continuously records and saves footage if it detects crash

Varia UT800 Smart Headlight

• Mounts under Edge (or elsewhere)

• Adjusts light based on ambient light