THM SRM Spider incl. PowerControl 8 for Clavicula M³ MTB - double 120/80mm BCD

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Description of THM SRM Spider incl. PowerControl 8 for Clavicula M³ MTB - double 120/80mm BCD

4 arms, 120/80mm (SRAM) BCD SRM powermeter spider including a PowerControl 8 computer suitable for the THM Clavicula M³ MTB crank.

SRM sets the standard for power measurement. SRM has the experience as the developer and first manufacturer of a patented PowerMeter for a crank drive. According to the manufacturer, the accuracy of the power measurement is an impressive 99% and more.

What is SRM

Welcome to the Ultimate Training Tool
The SRM Training System is intended to take your training and racing to the next level by incorporating power based training into your routine. Training with a PowerMeter can allow you to specifically target the actual demands of your goals, pace your effort on race day, organize your workout schedule and track fitness trends with consistent, accurate data. Now you can objectively find your limits and train to push beyond them!

Crank based powermeter
First Patented in 1987, the SRM PowerMeter gave the cycling world one of its greatest innovations for performance based training tools. Training by the metric of power allows for cyclists to have truly objective data based on their performance, rather than rely on heart rate, speed and perceived exertion. Power output is not directly influenced by environmental factors.

Seamless Integration into every drivetrain
Each SRM PowerMeter has been designed for simple installation and intuitive operation, while being compatible with 9, 10, or 11 speed drivetrains. Road, mountain, triathlon, BMX or Track disciplines; if there is a need to improve cycling performance, there is an SRM to fit your bike!

Strain gauge based torque measuring
The SRM PowerMeter functions with a simple, yet exhaustively refined design. Inside each SRM PowerMeter are four measuring bridges connecting the chain rings (drivetrain) to the crank arms (the rider). As force from the rider's leg is applied to the crank arm (Torque), the bridges measure the amount of force being applied. That force is multiplied by the speed of the pedal stroke (known as Angular Velocity). Torque X Angular Velocity = Power!

ANT+ Compatible
While the SRM was designed to be used as a complete system, each SRM PowerMeter can also be paired with 3rd party compatible ANT+ head units allowing for expandability to smartphone app technology.

Measurement data
  • Power/cadence - from 0 – 4200 watts - the SRM measures scientifically-proven accurate power data
  • Heart Rate - EKG accurate heart rate transmitting and recording
  • Altitude - track your current altitude and altitude gained on a ride to reach your climbing goals
  • Energy - measure the mechanical energy expenditure during your ride
  • Speed - real time, average, and maximum speed values in kilometers or mile per hour


PowerControl8 Computer

With the PC8 SRM offers a device that is focused entirely on the needs of athletes, and foregoes gimmicks. In addition to common values such as power, heart rate, speed, etc. - the Training Peaks metrics such TSS® (Training Stress Score®), NP® (Normalized Power®) and IF® (Intensity Factor®) are calculated, and the values are displayed. Also, location and content of the various data fields on the display is configurable.

Of course, the PC8 also has GPS (for recording) and is controlled by a light sensor backlight. The light as well as the GPS can be turned off in order to prolong battery life, which is between 10 and 45 hours.

The memory capacity is 500 MB, which can store data up to 4,000 hours of training. A built-in motion sensor turns the PC8 on automatically when riding.

Since many riders have several bikes with power meters, the PC8 supports up to four different bicycle profiles. Selecting the profile for the respective bike prior to departure eliminates the previously required pairing with the power meter.

The shell is made of anodized aluminum, which is available in three different colors: red, black and titanium (grey).
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Fact Sheet of THM SRM Spider incl. PowerControl 8 for Clavicula M³ MTB - double 120/80mm BCD

Product Name: THM SRM Spider incl. PowerControl 8 for Clavicula M³ MTB - double 120/80mm BCD
Manufacturer: THM
Item Code: THM379517
Year: 2018
Material: Aluminium
Color: black
Bolt Circle (mm): 120/80 mm (SRAM)
Chainline: 49.5 mm
Included in delivery: 1 SRM spider incl. PowerControl 8, without crank arms, bottom bracket cups and chainrings
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Selection: THM SRM Spider incl. PowerControl 8 for Clavicula M³ MTB - double 120/80mm BCD
Currently not in stock Not deliverable Color PowerControl 8 black
Currently not in stock Not deliverable Color PowerControl 8 titanium (grey)
Currently not in stock Not deliverable Color PowerControl 8 red
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