As likely to be something to do with how you're sitting on the bike and pedaling I'd have thought. Not sure how you'd test this though.
@christianSpaceman started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
As likely to be something to do with how you're sitting on the bike and pedaling I'd have thought. Not sure how you'd test this though.