Above are all of the parts that I am selling with my SRM device. This device fits on any bike with a BB30 bottom bracket. All of the devices data signaling and receiving devices are wireless. I forgot to add the spoke sensor magnet (no biggie, I'll send that with the device when I mail it to the new owner). The red items are the threaded bolts that attack the crank arms to the spindle (the spindle is not included, but I have two that I can sell if requested. They are available on ebay or your local bike shop). The top right black item is the cadence magnet. It is required for the SRM to turn on when pedaling. It's super easy to install. It goes under the cable guides located under the bottom bracket.. The other black item just below the cadence magnet is the handlebar mount for the SRM control. It is notable that I am including a Cyclops heartrate strap instead of the Suunto heartrate strap. This is because the The Cyclops device works much better. Because it's a "wireless ANT + sport" device it is easily synced with the powercontrol device.
Above is my receipt for the standard annual battery replacement and calibration (or every 700 hours of use). I didn't expect it to cost so much, but I also didn't expect them to install new firmware, so that's a bonus.
Keep in mind that this is professional and even scientific grade equipment. It's pretty advanced and accurate stuff. It's the best you can buy....... well you can buy a new one for a little over 3 grand (SRM sells their device for 3 grand without the chain rings and crank arms...... I'm selling mine with them).
Also pictured is a magnet sensor. It is designed to fit on bladed spokes. (yes, it comes with the SRM).
Hi this is David Henderson from My World From A Bicycle. In this following video I'm swapping out my SRM crank between my Cannondale Slice Time Trial Bicycle and my Cannondale Supersix Road Bicycle.
For the techie's out there this SRM crank weighs 721 grams with crank, chain rings and bottom bracket. The bottom bracket is a BB30 SI-Hollogram and weighs 128 grams. My complete race ready Supersix bike weighed in at 15.4 pounds on my bathroom scale and my Slice bicycle weighed in at 17.6 pounds.
Wattage or energy output data is extremely valuable for a serious cyclist. It provides a true measurement for how hard a cyclist is working. This data can be used to determine power thresholds for racing and training. Additionally it can help determine if an athlete is improving over time or not.
Old school training data included speed and heart rate measurements. Unfortunately the measurements don't tell the full story of training. Speed is highly subjective to wind resistance and road grade or pitch, etcetera. Heart rate, on the other hand, is subject to conditions such as temperature, hydration levels, conditioning, diet, etcetera.
The SRM device combines all of these data fields previously mentioned for a more complete picture of performance.
The only draw back of the SRM watt meter is the cost. The one that I am switching between bicycles costs $3,000, which is why I only own one and transfer between bicycles.
Oh, I almost forgot. The tires which are about $100 apiece are extra.
In conclusion, high end race bikes are stocked full of engineering and technology. As a result they are lighter, more aerodynamic, stiffer, handle better, and are just plain fun to ride.
To learn about the best video camera in the world for videoing cycling (which is the cameras that I use for my videos) click here.