c speed to let go of the beautiful hand-built-by-Hiroshi rear wheel (Ambrosio Excellight) featuring the revolutionary and highly acclaimed Eccentric Eno hub produced in the USA by White Industries. This hub was invented to convert standard road races with vertical dropouts into kotei/fixies and ingeniuously solves the problem of how to tension the chain. My own Eccentric Eno is of the flip/flop design and has a fixed 16T cog on one side and a free 16T cog on the other side which I never even bothered to try, infatuated as I was by the simple beauty and depth of "kotei" so many people are raving about.
Hiroshi-san will be building up my Sirius Ti-1 with a new Ultegra compact crankset and shifters and the Dura-Ace derailleurs from the original groupset. By way of experiment, I asked him to order 165mm crank arms. I am curious and hoping this switch to shorter crank arms will help improve my spinning and reduce the stress on my weakening knees. Who knows, I might even enter this year's TOITO on this great titanium bike about to be reborn!
vrijdag 23 maart 2012
zondag 26 juni 2011
|Special 19mm spanner for tightening the chain on Eno eccentric hub|
|White Industries Eno Eccentric Hub|
|Fine-tuned kotei: saddle lower with tip slightly downward / chain "nicely" tensioned / bar tape|
|Bullhorns feel comfortable especially when climbing out of the saddle|
|Wearing my "kotei jersey" in misty rain along the Onekan|
zaterdag 18 juni 2011
Great advice by Kotei Grand Master Tim:
A couple of small tips from looking at your bike picture:
1) Lower the nose of your saddle - rotates your pelvis into a more natural position for higher cadence. It will require more core support - but that will carry back to your road ridin...g very well.
2) Lower your saddle height below your normal road bike. Full extension of the legs while just getting your rhythm is going to put you on the bitter edge for harmonic bouncing. Lowerd saddle allows you more envelope to modulate the higher rpm and avoid bouncing.
3) Tighten your chain - it seems a bit loose in the pic. There should no backlash in it. Loose chain will also contribute to harmonic bouncing. And also interrupts your transitions from power to 'reverse' - subtle, but noticeable.
...don't worry it really does get better, and you'll find a certain joy in the fractional transitions your muscles make in maintaining the delicate balance to avoid you becoming a 'yard sale'. That is the zen of kotei. When it comes together, you are totally at one with the road. When it doesn't you quite literally become part of the road!
Thanks Tim !