I'm in the process of buying a new set of cranks for my LD rig and I'm wondering if I should go longer. I currently run 170mm but according to most calculations on inseam versus crank length my 85-86cm legs and 181cm height should put me on 172.5mm cranks, so I am wondering if I've been missing out or if I would even notice 2.5mm. Also does that mean I have to lower my seat height 2.5mm to compensate?
When seated I tend to spin more than most people but when climbing I spend a lot of time out of the saddle pushing bigger gears followed by stints of sitting and spinning a lower gear.
What are you guys using? Anyone tried a few different lengths?