I'm thinking about upgrading my crankset which is a 2001 octalink LX (FC-M571). My concern is stiffness (pedaling efficiency) and weight.
I was thinking about getting new SLX / XT crankset for a while. In a meanwhile I have built my girlfriends bike using SLX crankset and tested the new hollowtech II. Everybody is spiking how stiff the new HTII cranksets are but I see no difference compared to my old LX...
I did the following test: I put my, and hers bike upside down, level the non-drive side crank arm with chain stay, grab crankarm and chain stay at the same time with my hand and squeeze. Both LX and STX bended the same, about 2-3mm with out any problem.
Considering that new HTII cranksets have larger Q factor and that means less efficient pedaling position and the facts that my LX is only marginally heavier and there is no difference is stiffness should I still consider to "upgrade" ?
Am I missing something ? Is my stiffness test so much flowed ? The goal of that upgrade is only to make the bike a bit faster uphills, but I'm not so sure it will have positive effect.
I was thinking about getting new SLX / XT crankset for a while. In a meanwhile I have built my girlfriends bike using SLX crankset and tested the new hollowtech II. Everybody is spiking how stiff the new HTII cranksets are but I see no difference compared to my old LX...
I did the following test: I put my, and hers bike upside down, level the non-drive side crank arm with chain stay, grab crankarm and chain stay at the same time with my hand and squeeze. Both LX and STX bended the same, about 2-3mm with out any problem.
Considering that new HTII cranksets have larger Q factor and that means less efficient pedaling position and the facts that my LX is only marginally heavier and there is no difference is stiffness should I still consider to "upgrade" ?
Am I missing something ? Is my stiffness test so much flowed ? The goal of that upgrade is only to make the bike a bit faster uphills, but I'm not so sure it will have positive effect.