How accurate is your power meter?

In our recent series of webinars about the power of the InfoCrank power meter, Verve Cycling CEO Bryan Taylor spoke about the importance of accuracy.

You’ve told us you want to know more about the importance of getting things right – Bryan talks us through why accuracy is so key.

That word ‘accuracy’ crops up quite a lot. I won’t apologise for repeating it a lot in this blog and other pieces – we’re very proud of the precise results you can achieve in your training with InfoCrank.

It seems as if it’s a word you want to know more about too. In conversations with our customers, I’ve learned that many of you have previously owned another brand of power meter before switching to InfoCrank.

You told me that you changed to our product because you were dissatisfied with the other power meter. One of those reasons was down to that buzzword – accuracy. The feedback shows that many of you didn’t think you were getting the right numbers – true data was important to you.

That said, you also told me that when you bought the InfoCrank, you didn’t quite understand just what accuracy actually means, in relation to our power meter.

During a recent webinar, I explained a few concepts relating to a lack of accuracy, without naming any specific products. Those of you who joined us for the conversation said they were surprised by what they saw.

I followed that up by asking the attendees if they wanted to learn how accuracy occurs compared to a lack of accuracy – again, lots of agreement.

So, that’s what we’ll look to talk about in our next webinar. We’ll start with the idea of two concepts of power measurement – one leg measurement or total measurement.

Lacets de Montvernier 09 Power Meter

The very first power meters (and those that followed once the patent had expired) are based on measuring at the spider and effectively give the total power. They are not capable of measuring input from each leg but they do have algorithms for estimating those figures.

At the opposite end of the spectrum are the stick-ons or pedals that measure on one crank. They are the cheapest entry point into power meters and in that sense have served customers well.

We will explore what they do well but, importantly, also their shortcomings. This is a good way of segueing to the crank-based systems of any type.

Obviously Verve Cycling believes this is the only way and place to measure what needs to be measured. And that will bring us to the key subject. What should we be measuring and how can it be measured?

Once we know that, it becomes quite easy to understand how something can be accurate at one time and not another, how one system can be inherently better than another and how this is not even controversial from an engineering point of view.

What I am aim to do in this upcoming session is to state facts, not disparage any market competitors, but show how common wisdom is not actually all that common. I hope you’ll be able to join us and I look forward to seeing you there.

The Why Accuracy Matters webinar will take place on Thursday 24 June 2021 with Verve Cycling CEO, Bryan Taylor. Click here to view the available sessions and register.

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