It should be calculated relative to your frame (body not bike) and to what you like.
I hate when people engaged in sports succumb to the limited range of motion in their joints, that, my friends, is a slippery slope.
Peace
@scaryeire started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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It should be calculated relative to your frame (body not bike) and to what you like.
I hate when people engaged in sports succumb to the limited range of motion in their joints, that, my friends, is a slippery slope.
Peace