GBP Guilty Bike Porn, So close to Pron

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Chak in reply to @PhilDAS

Bollocks to that. I've installed a few so far, mostly on electronic shifting bikes, and they've all eventually come off by request of those who asked for them to begin with. As far as I see it, if it were true, Shimano et al would have implemented them.

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Tijs in reply to @Chak

A friend of mine also made an interesting observation. Ceramic bearings mainly have an effect during high rpms, right? Yet the higher tooth count make them spin fewer rpm than regular jockey wheels.

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PhilDAS in reply to @Tijs

So being ceramic doesn't have much effect but the main point is the oversize wheels, which as you say, spin slower and therefore have less friction. Normal bearings or not, they are more efficient. But its just minimal and HTFU has the same effect.

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