Power to the people – my thoughts of power meters in cycling

Tools for measuring power output in cycling have been available for quite a while now. In the early days, it was very expensive and unpractical regarding calibration and maintenance. It has done small progression each year but still been on the expensive and unpractical. At least until now.

This year a few new products were launched who satisfied my requirements for a power meter, and not to say a low, but reasonable price. I am talking about the pedal based power meters and more specifically the Garmin Vector 3 or the Favero Assioma (and with Powertap P1 as the second choice if none of the other above is available). Of them, I have only personal experience with the Assioma. I did write an initial review about them in this blog post, and a full review will come soon but as for now, I can say that the issue of deviation compared to my Tacx Neo is sorted out.

In my view, pedal-based power meters are supreme compared to the other solutions.

  • It is very easy to mount/dismount
  • It enables you to play around with crank lengths and crank types
  • You get left/right power balance and pedal stroke analysis
  • It is small and light, and therefore easy to bring along
  • The ease of mount and small size/weight makes it possible to bring along and mount to a spinning bike if you are out travelling ensuring you are training in the right intensity even on a crappy spinning bike at a hotel.

The drawback? It is impossible to use other pedal types, like Speedplay, if those are your favourite pedals. Also, if you race both triathlon/road races and CX and want to use the same power meter, which is not possible with pedal based power meters. Other than that I do not see any other obvious reasons why not to chose pedal based power meters. Some might say it is fragile in a crash, but I do not find that to be very likely to crash in a way that destroys the pedals, which would not damage the pedal arms or crank.

With this, I do not say that all other power meters suck, because they do not. I have used both hub-based power meters and crank based power meters with good result. For my needs, however, with several bikes in use at home and regularly travels to places with other bikes, the pedal based power meters are much better. While I have used the Polar Look Keo power pedals for 3 years now I did not bring them with me since the mounting was too time-consuming. They had to be aligned perfectly with the right torque, which was more hassle than it sounds. If not done right they were off. With the Assioma and Vector 3, you just tighten them like a regular pedal, and you can change both in less than a minute. The price is also decreased to the level of a single mid-range high profile carbon wheel, while worth at least ten times as much regarding potential performance increase.

I truly mean that you can be a triathlete on a budget, and be very happy with that. There is both inexpensive equipment and races that holds good quality. A power meter should not be your first priority. Begin with swim goggles, wetsuit, trishorts, bike, helmet and running shoes. Then prioritize a power meter (and a multisport watch to read the data). I find it such a powerful tool.

riallan.files.wordpress.com/2018/03/triallan-allan-hovda-assioma-duo-review-test-tacx-neo.jpg»> My Assioma Duo – I do not love the look of the pod which have the rechargeable battery and transmitting equipment, but honestly do not think about it at all. The rest of it I love :)[/caption][capti
allan.files.wordpress.com/2018/06/img_1694.jpg»> I have a Boardman TTE as a race bike and a AIR with clip-on as a training bike. Then the pedals are gold since it takes less than two minutes to change over the pedals. I also have to adjust the crank length (165 vs 172,5mm) which can be done on my Polar V800 or the Assioma app in a few seconds. 
The cycling shoe-based power meter is rather original. I do not know how reliable it is, and frankly, I do not believe it is a good concept. You probably do not want to wear the same shoe for every ride and the extra build hight. A shoe wears faster and is prone to damage. I do not see a bright future for this solution, nor the cleat-based power meters solution.

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I am a 33 year old PRO triatlete. My goal is to swim, bike and run as fast as possible, and enjoy the journey. All my adventures and triathlon related stuff is well documented on this blog.

2 kommentarer til “Power to the people – my thoughts of power meters in cycling

  1. It’s a useful tool, but very few people use powermeters to their full training potential and mostly just ride around with a few extra numbers to display on their Garmin. I’ve been guilty of that in the past. A great training aid if used properly.

    Also I’ve been very happy with my Favero Assioma Duos so far.

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