OK smarty-pants, how well do you know your power meters?
Here are 2 quizzes
- Power Meter 101. (Link to: powermetercity.com)
- Power Meter Know-It-All (Link to: powermetercity.com)
I got two wrong on the second, more advanced, quiz. Although in my defence I realised one was wrong as soon as I clicked it.
They are genuine quizzes and not click bait. The advertising bit is to remind you that there is either a 10% discount or 10% store credit off EVERYTHING at PowerMeterCity with the checkout code: the5krunner10
Try the code the5krunner50 and see if Josh has coded his checkout system properly 😉 [He has, don’t try it]
Naturally I will now remind you that in the USA I partner exclusively with Power Meter City.
You get a 10% CASH discount with the code the5krunner10 when that code is used at checkout. For Garmin, ASSIOMA and Stages PowerMeterCity will INSTEAD give you a 10% store credit that you can then use against any other product. AND you can still use my the5krunner10 discount AS WELL AS THE STORE CREDIT on the second purchase, providing it is not for a Garmin, Favero or Stages product
Why I partner With PowerMeterCity: The owner, Josh, is a great guy and keen to grow his business. Hopefully, like me, you will want to help the smaller companies with a passion for customer service. If you want anything to do with, ahem, ‘power meters’ or ‘stuff related to power meters’ then the name is on the tin. They do what the name says.
Admittedly, PMC don’t sell cities.
PowerMeterCity has a 95% EXCELLENT rating on TRUSTPILOT
Related reading: Assioma, STAGES & Garmin | An extra 10% for purchases at PowerMeterCity.
Last Updated on 8 April 2026 by the5krunner
My favourite kit and nutrition
- Maurten — the race nutrition trusted by elite athletes. Gels and drink mix engineered to be easy on the stomach.
- Garmin 90-degree charging adapter — the small adapter that keeps your charging cable tidy at the stem. Essential for race day.
- Garmin charging puck — the fastest and most reliable way to top up your Garmin before a session.
- Ravemen FR300 — front light that mounts directly under your Garmin or Wahoo head unit. Keeps your bars clean and your beam pointed where it matters.
- Garmin Varia RTL515 — radar rear light that alerts you to vehicles approaching from behind. Pairs with your Edge or Garmin watch.
- Stryd — the footpod that brings running power to your Garmin. The single most useful running upgrade I have made.
- Favero Assioma Pro RS2 — the power meter pedals most serious cyclists end up choosing. Accurate, easy to move between bikes.
Reader-Powered Content
This content is not sponsored. It’s mostly me behind the labour of love, which is this site, and I appreciate everyone who supports it.
Support the site: Follow (free, fewer ads) · Subscribe (paid, ad-free) · Buy Me A Coffee ❤️
All articles are written by real people, fact-checked, and verified for originality. See the Editorial Policy. FTC: Affiliate Disclosure — some links pay commission. As an Amazon Associate, I earn from qualifying purchases.
tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID
Bad question:
ANT+ is an “open system” and data can be sent to multiple head units. Bluetooth SMART is a “closed system”, and you are limited to one.
closed and open? Not sure what that means. Limited to one? With current implementations or what the standard supports? BLE does allow for pairing to multiple head units but no one seems to do it yet
Also oval chainrings impact power based on how oval it is (assuming power meter doesn’t correct for it and the power meter is in a location that can be impacted, hub based aren’t impacted)
The whole Crank Position System is just a marketing term. Lots of power meters can do magnetless cadence but still better to use magnets if you want perfect. Even with Verve: http://support.vervecycling.com/support/solutions/articles/1000145011-aren-t-cadence-magnets-a-thing-of-the-past-
Hi Eli. Thanks for the feedback. We’re in the process of revamping our questions a bit. For example, one question is about power measurement in the spindle and doesn’t mention Easton’s new CINCH power meter.
The ANT+ vs. BLE thing can get a bit messy. We’ve often heard the open vs. closed argument and used it as we’re really yet to see a BLE power meter pair with multiple head units.
Yes, I agree on oval chainrings. The more oval the ring, the more the power data can be skewed. We actually did some research and wrote an article on this. In our question I think we say “on average”.
Also agree on accelerometers. However two interesting notes…Verve claims their CPS is different and better. I can’t tell you how or why…I’ve never gotten into it with their engineers but probably should. Also, while it’s true that magnets are the best for accuracy, the new InfoCrank works best without them. The new firmware acts funky sometimes when a magnet is used…at least in our experience. Anyway…thanks for checking out the quiz 🙂
Best,
Josh
I suspect that the orientation/position of the oval in relation to the crank also affects power.