This is great. One thing I do notice missing is the affect of stem length on steering, particularly for road bikes. It’s not uncommon for road bikes to have b

This is great. One thing I do notice missing is the affect of stem length on steering, particularly for road bikes. It’s not uncommon for road bikes to have both a steep head tube angle and a longer stem e.g. > 110mm to increase stability at speed. Narrower and lower handlebars give you better aerodynamics but also affect both comfort and steering.