Look through any forum on the internet, raise the topic with any group of riders and you will get a bewildering array of opinion when it comes to drivetrain life. Much will depend upon how meticulous your maintenance is, riding context and to some extent, rider weight/riding style. Mountain biking/gravel, rough stuff touring and winter are going to chew through chains and cassettes at a much faster rate than those belonging to best bikes brought out on sunny days.
Rule of thumb and with generally good maintenance (Clean chains, lightly lubed and replaced at.75 wear) I get through three chains to every cassette.
Shifting had suddenly gone off-phantom stuff, so hustling along the backroads at 5am, I reasoned cable stretch the most obvious culprit, so I tweaked the barrel adjuster. Seemed better for a while but still phantom shifting under load. Chain was well within acceptable tolerances, but closer inspection of the cassette suggested this was the culprit. In fairness, it’s been chugging along since May 2019, so didn’t owe me anything.
A rummage through the transmission box revealed two new chains but only a part worn 9spd cassette, which was of no use, so consigned to the bin, along with its 10speed counterpart. It makes good sense to buy chains, cassettes and other consumables in multiples-two of each, so there’s no dramas when the bike shop’s shut.
Particularly when they’re cheap...While the global supply shortage seems to have eased slightly, getting hold of things, especially at the right price is still proving trickier than before. I went for another Tiagra since these seem to strike the best balance between performance and economy. I’ve never liked Shimano chains, so KMC, SRAM etc are my defaults. 12-28 is pretty much ideal, given the build’s brief.
On the plus side, the replacement arrived within 24hours, which was totally unexpected. These Muc-Off mechanics gloves had arrived just an hour before. On went the cassette! I also discovered the Univega’s front Continental Contact Speed reflex was pancake flat, courtesy of an easily spotted flint embedded in the shoulder.
Not a nasty cut, but one that needed filling with superglue, nonetheless. At present they are wearing at the expected rate and across the centre strip Tube switched; job done. An ideal opportunity to polish the frameset, check and clean the brake pads, clean the rim side walls with a medium stiff brush etc.
The chain was still in very good health, so I’ve stuck with it for time being. Judging by the analogue gauge, at present rate, I should get another five hundred miles, (3 weeks or so) from it, then I’ll consign it to the bin and so the cycle will continue.
I’d got past the 500miles on a single application of the Muc-Off –50 chain lube, which does transfer quite easily to hands but less readily than many wet lubes I’ve used in the past. No worse than Weldtite TF2 Performance All Weather Lube https://www.sevendaycyclist.com/weldtite-tf2-performance-all-weathe , which is a comparator in terms of viscosity and operating range (also reckoned very good in freezing temperatures). I’ve also grown fond of the Ravemen TR50 Rechargeable Rear Light https://www.sevendaycyclist.com/ravemen-tr50-rear-light
The ongoing pandemic and localised lockdowns has made travel and touring a more considered affair. Cicerone’s guide to riding Hadrian's cycleway could provide useful inspiration https://www.sevendaycyclist.com/cycling-hadrian-s-cycleway
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