So having installed the new chainring I thought the day is sunny and I have half an hour free time. Why don't I take the bike for a little rattle down the local treelined hill, and see what shakes out. No sooner do I leave the house and get up the road than there is a horrible clunking noise from the back. A regular little skip like a heart beat gone wrong, and a rattle and a clunk that sounds like the chain wants to move to the next gear socket. Then the chain falls off at the front.
Okay.... so perhaps I have miscounted the links on my chain and so its the wrong length. Only I could have sworn I had measured correctly. Perhaps then I have not adjusted the rear derailleur for the new front chainring? This seems like the easiest problem to start on, and so armed with my trusty screwdriver I set about the limit screws in attempt to solve the problem by the roadside. 10 minutes later and I limp the bike home clunking like the mechanical equivalent of an asthmatic who has forgotten his inhaler.
Its a week before I get a chance to sit down and review the problem. There is no way it is a the derailleur. Everything is perfectly set up from the start and the adjustments did not affect the problem one bit. Nor is it the chain length as I check again.
So some happy time putting the taking off the bottom bracket and we are in business. Only we are not - there is still the irritating hiccup, even though the chainline looks near enough perfect by eye. So I do what I probably should have done when I put the front chainring on, I look at the chain itself. What do you know one little stiff link. Rigid and immobile and so unable to bend round the jockey wheel.
Thursday, June 16, 2011
Wednesday, June 1, 2011
I have now received the Goldtech chainring from BETD, very prompt dispatched Tuesday and here the next day, so being free for half an hour fitted it. It is a simple job as there was no need to remove the bottom bracket and adjust the front derailleur. Simplicity does have its merits. I do need to work at getting the chainretention device to fit cleanly though. I think over the rougher downhill sections it will save me from spinning my legs in a futile attempt to provide drive when required.