Why a Powermeter is the Ultimate First Upgrade for Cyclists
If you browse nearly any cycling forum, you’re bound to come across a post from a beginner asking, “What’s the best upgrade for my bike?” Typical responses include deep-section carbon wheels, upgrading the groupset, or even a classic quote from Eddy Merckx: “Don’t buy upgrades, ride up grades.” While these are common answers, my recommendation, almost every time, is to invest in a powermeter. It might not have the allure or immediate gratification of shiny carbon gear, but when it comes to leveling up your cycling performance, it’s an absolute game-changer.
Not at all! While powermeters are often associated with professional or "serious" cyclists, they’re incredibly valuable for riders of all levels. In fact, beginners may benefit the most because a powermeter helps you train smarter, not harder. It provides objective data about your effort, allowing you to pace yourself better, track progress, and avoid overtraining. Whether your goal is to improve fitness, tackle longer rides, or just get more out of your cycling, a powermeter is a tool that can make every ride more effective—regardless of your experience level.
Aren’t they only meant for professionals or hardcore cyclists?
For beginners, who may not yet have a good sense of pacing or how different effort levels feel, a powermeter is a huge help in managing intensity during training and events. For instance, it’s easy to push too hard on a climb early in a ride when you’re feeling fresh, only to struggle later. With a powermeter and properly set training zones, you can avoid this mistake.
Elite cyclists are so in tune with their bodies that they can often estimate their power output quite accurately without any tools. For the rest of us, however, we don’t have that same level of awareness, and a powermeter offers a reliable way to fine-tune effort and achieve pro-level pacing.
For most amateur riders, time on the bike is limited and valuable. Using a powermeter ensures that every ride and workout is as productive as possible, making it an indispensable tool for improvement.
Why isn’t a heart rate monitor enough?
A key advantage of a powermeter over a heart rate monitor is its instant feedback on changes in your effort level. Heart rate, on the other hand, has a noticeable delay. While this isn’t a major issue for steady, longer efforts, it becomes a problem for short intervals or high-intensity rides, where heart rate simply can’t respond quickly enough.
During training, pacing hard efforts under five minutes using heart rate can be tricky. If you try to gradually build into the target zone to account for the lag, you risk not pushing hard enough. On the flip side, spiking your heart rate early might cause you to burn out before the interval ends. A powermeter solves this by ensuring you hit and maintain the desired output consistently from the first pedal stroke to the last.
Heart rate is influenced by many external factors—an argument with your partner, an extra shot of espresso before the ride, pre-event nerves, or dealing with an unexpected flat tire can all cause it to spike. It’s also sensitive to things like illness, hydration levels, temperature, and altitude. Additionally, if you’re coming off an intense training block and are particularly fatigued, your heart rate might be unusually low and unresponsive.
For most amateur cyclists, time to ride is both valuable and limited. Making the most of every training session is crucial, and a powermeter is the ultimate tool to help you do just that.
During long rides, a physiological phenomenon called "cardiac drift" can occur, where your heart rate increases over time even though your effort remains constant. This effect can be as high as 15%, and while proper hydration can help manage it, it can’t be entirely avoided.
When riding indoors, many cyclists find that their heart rate tends to be 10-15 beats per minute lower compared to riding outside, even at the same perceived effort. This is due to factors like less activation of core and stabilizer muscles. However, if your indoor setup is well-ventilated, you have a good fan, and your riding position is consistent, your power numbers indoors should closely mirror those from outdoor rides.
That doesn’t mean you should get rid of your heart rate monitor. While your powermeter shows the output your body is producing, your heart rate monitor reveals how that effort is affecting your body. By understanding the relationship between the two, you gain valuable insight into how your training is impacting you. For instance, if you’ve been through a tough training block and notice that your heart rate stays low even when you’re pushing high watts, with your perceived effort feeling high, it could be a sign that it’s time to ease up.
Aren’t they really expensive?
If you’re already considering upgrading to a new wheelset or similar, a powermeter is actually quite affordable. You can now get a reliable single-sided pedal-based system for under $500.
Single-sided systems measure power on one side, usually the non-drive side, and then double the value for the total. Some riders and coaches may look down on these systems, but unless you have significant and fluctuating power imbalances, they provide a perfectly valid and cost-effective way to measure power.
Aren’t they really complicated to use and understand?
Some data enthusiasts and coaches tend to make power-based training seem more complex than it really is. In reality, with just a bit of basic understanding and a platform like Strava to track your rides, a powermeter can significantly improve your cycling performance without being overly complicated.
In this series of articles, I’ll cover:
- The importance of FTP (Functional Threshold Power) and how to test for it, including a shortcut “guesstimate” using your Power Curve.
- How to use your FTP to set training zones, understand what these zones represent, and how to utilize them effectively.
- Setting up your head unit, including which data fields to display during your ride.
- Key power metrics you’ll see when uploading a ride to Strava, and how to interpret them.
- Fitness, Fatigue, and Form—what these terms mean and how to understand and use the Fitness & Freshness graph.
Happy Riding #ROTORian