一年少々使ってその間何度かピンの抜き差しもしているチェーンだったのでそれなりに弱っていたとは思うが、友人からは「アルテのチェーンは弱いから」とのコメントが帰ってきたので、ここは迷わずDura Ace CN-7901を載せることにした。試乗してみて、漕ぎ心地が激変したのでいささか驚いた。現在、チェーンは2台ともお揃いのDura Aceとなった。
これと同時に装着したのがK-Edgeのチェーンキャッチャーだ。ここのところCristalは試走中2度ほどインナー・シフト時にチェーン落ちを経験しているので、安心のためこの防護策を取ることにした。取り付け・調整は簡単で、不安が取り払えたこの心理的な安心感はとても大きい。
I
replaced the chain for Cristal. I was running the traditional Hakone road the
other day attempting the climb-up before hearing the opinion of my friend, and
unfortunately (or actually luckily!) the chain broke and I got stuck before I
reached the point of truly steep slope.
I was
fortunate because I had installed KMB’s Missing Link in the occasion of Tokoku
tour in October, and I could easily remove the chain from the frame.
I picked a stone on the road
and hit the bent side plate back into the pin, which was a very primitive job but it worked. I could in no way continue climbing in this
condition, particularly against an extreme slope, so I descended back to the
nearby station at that time.
It was
Ultegra CN-6601 chain that I had been using a little over one year, and I
pulled out the pins for a few times for maintenance or else, therefore the
chain itself may have been weakened, but my friend commented Ultegra chain
tended to be weak.
Anyway,
I installed the new CN-7901 Dura Ace chain on Cristal, and its smoothest feel
in driving was just dramatic in comparison. At the same time, I installed
K-Edge Chain Catcher in addition because the chain went off the ring twice
while shifting to the inner ring recently, and I felt the need for insurance. Its
installation was easy, and this mental peace with no worries about the chain is
so great during the ride.
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