SRM power meters use spider-mounted strain gages that are attached with copper wires to a circuit board belowBen Delaney/Future Publishing
New for SRM is a Dura-Ace 9000 crank featuring a right arm Shimano produces just for SRMBen Delaney/Future Publishing
SRM prides itself on its lab-quality equipment. Here, Mike Hall stands next to a lab system that includes an ergometer, software and hardware plus storage room for a metabolic cart suiteBen Delaney/Future Publishing
The SRM ergometer can be used in a variety of ways in a lab setting, such as fixing the power and allowing the rider to choose the cadence, or in an isokinetic setting that does the oppositeBen Delaney/Future Publishing
Beyond the simple saddle adjustments, the SRM ergometer is adjustable for crank length, too, from 150mm to 190mmBen Delaney/Future Publishing
What began as a single crank in the 1990s has expanded to a deep range of road, mountain and track cranksBen Delaney/Future Publishing
SRM now uses the wireless ANT+ protocol, and so can be used in conjunction with a Garmin or another head unit, but the company (and most pro riders) strongly suggest the SRM PowerControl 7 head unit for better accuracyBen Delaney/Future Publishing
Uli Schoberer founded the company in 1986 as an engineer and amateur cyclist looking to scientifically quantify his trainingBen Delaney/Future Publishing
SRM and Schoberer have long histories with pro and national teams. Schoberer worked with the US Olympic team for Project 96, and was given this bike as a thank youBen Delaney/Future Publishing
At SRM’s Colorado Springs facility, the company illustrates its strong connection to the pro pelotonBen Delaney/Future Publishing
World time trial champion Tony Martin was an SRM user (his team races with Quarq now)Ben Delaney/Future Publishing
Many pro riders send in tokens of their thanks. Shown here are former T-Mobile and US Olympic riders Dede Barry and Kristin ArmstrongBen Delaney/Future Publishing
Amber Neben is one of many riders to earn a rainbow jersey on an SRMBen Delaney/Future Publishing
Besides being “on his bike, 8 hours a day,” a certain Lance Armstrong was a longtime SRM userBen Delaney/Future Publishing
The heart of the SRM power meter is the spider, onto which the strain gages (shown here in four pairs) are mountedBen Delaney/Future Publishing
In Colorado and in Germany, strain gages are attached to the spiders by handBen Delaney/Future Publishing
Some power meters get 8 strain gages; others 16Ben Delaney/Future Publishing
Under a specified amount of presure in a mold, the strain gage adhesive is curedBen Delaney/Future Publishing