My old road bike had 172.5mm cranks, and my new bike has 170mm which is not much of a difference, but every once in a while I wondered if longer cranks would give me extra power because I felt like I had more power on the longer cranks. This could have been cause by any number of reasons such as seat height, sitting position on the saddle, or something else. I'm not really worried about what caused it though. Wanting to know more I jumped on Google and came across this...

https://cyclingtips.com/...-leverage-power-fit/

I felt it was a great article and it has me thinking that I don't really need to change cranks unless the new ones are simply more aerodynamic because different length cranks don't seem to offer much more or less power unless you are on the extreme ends of what is currently available on the market.

Has this article been debunked or is there more data available?

I got 170mm because when I bought my groupset 172.5mm was way more expensive for some reason and there was no way in hell I was going to let my brand new frame sit there unused for longer than necessary. When you bought cranks did you just wing it and go smaller than your road bike because you heard it saves your legs for the run? Did your bike fitter sell you some sparkly ones? Are you considering new cranks? If so, why?

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