Showing posts with label cable operated discs. Show all posts
Showing posts with label cable operated discs. Show all posts

Tuesday, 26 September 2023

Ahead of the Curve













While sweeping through the backroads, Ursula and I spotted this stricken Skoda. I’ve seen two other vehicles- a BMW Mini and a Toyota Rav4 meet the same fate over the past three years. Whether this was a blend of too much speed, poor tyre condition, mud on the road, and/or a deer leaping out is impossible to tell. However, having checked for anyone trapped and unconscious, I hopped back aboard Ursula and continued riding.  

The sugar beet crops are being harvested, so tractors and other large agricultural vehicles have been coating the tarmac with greasy, muddy stuff. Fabulous for assessing the Schwalbe Smart Sam’s handling prowess in muddy contexts. I was pleasantly surprised by how well they’ve behaved in these contexts and equally impressed by their mud-shedding ability once back on metaled roads.  


I’m someone who replaces consumables as a matter of course but there are some basic pre-seasonal checks that we should all perform. Especially on a working/winter bike. In my book tyres, wheels, chains, braking-cables/hoses, and pads, and contact points.  

Start by giving the bike a good wash and hard paste waxing-this makes potential issues easier to spot and nicer to tackle-especially if you're farming a job, say a brake bleed to your friendly mechanic.  


Now inspect the tyre casings for wear, bulges and similarly structural stuff. Small nicks and cuts in the tread can be filled with super glue but pension off, if they’ve clearly done a high mileage, or more serious wear’s evident 


A sudden rush of punctures is another sign an otherwise rugged tyre is coming to the end of its reliable life. I’ve experienced this with some iconic models, including the legendary Schwalbe Marathon Plus.  


Will be interesting to see if this fate strikes the Maxxis Refuse MAXXIS REFUSE TR FOLDING TYRE | cycling-not-racing (sevendaycyclist.com) as the darker months and less forgiving conditions unfold. I may well switch the fixed gear winter/trainer’s rear for the CST Xpedium Level 6 700x35C Single Compound 60tpi Wire Bead Tyres CST Xpedium Tyres | cycling-not-racing (sevendaycyclist.com). Single compound tyres tend to give a more direct ride but last longer, which is another consideration during the winter months  


In terms of wheels, check rims for wear, dings or similar imperfections and replace before they wear through. Give the wheels a spin and check for any side to side, or up n’ down play. Are all the spokes uniformly tensioned and all present Check the hubs for any grittiness, grumbling or side-to-side play.   


Cup and cone types should be stripped, bearings replaced and re-packed with a stoical grease at least yearly, more regularly on bikes that serve in harsh contexts. Same goes for headsets, especially on bikes shunning mudguards. Metal contact points, such as seat posts and stems should also be re-greased to prevent seizure-related issues. While you’re there, it's worth checking bars and posts for any signs of hairline fracture- especially around the stem face bolts. Check grips, or handlebar tape condition and replace as needed.  


I’ve tended to do this come autumn to coincide with cable replacements, I also find fresh bar tape one of those small but significant motivators, encouraging me to get out and ride. Presently the Souma Leather Handlebar tape is faring very well on Ursula and fixed gear winter/trainer Souma Leather Handlebar Tape | cycling-not-racing (sevendaycyclist.com) and seems tolerant of being re-wound following cable replacements, so stays.   


Saddles, especially the traditional leather type appreciate periodic licks of leather proofing to keep them supple and generally protected from the elements. Leather-covered models should be checked for signs of wear-a bit of electrical tape around the rear will protect against damage when leaning the bike against walls etc. Check the rails too, dents or similar damage signals replacement-failure is often unexpected and potentially very painful.  


Cables are things I replace as and when but those with more prescriptive service intervals should consider replacement every season. Sealed systems can be stubborn to fit and the outers are a little hostile to painted or lacquered hosts, so a strip of helicopter tape where the two meet is a good bet.  


However, they tend to be fit and forget. I prefer systems with compression-less housing since these have minimal friction, which really comes into its own with cable-operated disc setups. Pads also need a careful eye. In terms of discs, I’ll replace them when pads are down to 1.6mm and during winter, opt for either semi-metallic or fully sintered models for added bite.  


I’ve been particularly impressed by Disco Brakes Semi-Metallic pads Disco Disc Brake Pads and Wavey Rotors | cycling-not-racing (sevendaycyclist.com). Calliper and Cantilever pads usually have a wear indicator, so keep an eye on those and replace as needed. Upgrading the pads can bring budget stoppers up a couple of notches too. Otherwise, inspect for grit and other stuff regularly to prevent it from consuming pads and rims. 

 

Chains. Yep, these can wear at an alarming rate, especially during winter when you’ve got wet, gritty roads and wet lubes involved. Invest in a chain checker (Basic but serviceable models are only a few quid). Rule of thumb, replace 11-speed derailleur chains when they hit .5 on the tool, 7-10 speed around .75 and single speed 3/32 models at 1.0. Chains are comparatively inexpensive compared with other drivetrain components, so regular replacement will save a lot of money, longer term.

Friday, 25 March 2022

Strip Club









 I needed some mental downtime, and provided I’m not under undue pressure, immersion in a mechanical project can be extremely therapeutic. I’d intended to decompress by giving my fixed gear winter/trainer a midweek sudsy bucket clean and top up the now thirsty looking KMC S1 chain. However, one thing led to three successful missions.  

I was suddenly compelled to check whether Ursula’s RL340 would pull sufficient cable, thus removing any need to disturb the cockpit, save for a new cable and obviously, the bar wrap.  Having measured the TRP compresionless cable set and pruned to approximate length, I placed the wheel and forks into a stand, paired everything together.  


Drum roll...Engaging the lever proved a welcome surprise- decent modulation, travel and feel, no mushiness, sponginess or bottoming out. Hmm...Spotted a primer patch peeking through the School Chair fork, so on went a thin layer of black. Midweek...Should be nicely cured come the weekend... 


Fixed gear winter/trainer washed and rinsed, I topped up the Bike Medicine Purple Extreme Synthetic Chain Lubricant| cycling-not-racing (sevendaycyclist.com) and gave the saddle a lick of hide food to keep it nourished.  Ditto Ursula’s Cycles Berthoud Soulor CYCLES BERTHOUD SOULOR LEATHER SADDLE | cycling-not-racing (sevendaycyclist.com)    

While rummaging through various boxes, I resurrected the Infini Sword Super Bright 30 COB rear Light, which pumps out a maximum of 50 lumens and a super frugal flashing mode, genuinely good for 200 hours. No, you read that right. Not that I have any issue with the run times on my current batch of rear LEDs, but a super frugal backup is a serious boon.  


Halo Aerorage Track hub rebuilt; I’ve mounted the Kenda Kwick Roller KS Plus KENDA KWICK JOURNEY TYRES | cycling-not-racing (sevendaycyclist.com). It’s a super dependable and seemingly durable model well suited to a winter/fixed-especially one forgoing a mechanical rear brake. Dusk’s cloak had well and truly been cast by this point, and I had a business meeting in Milton Keynes the following morning, so I quit while ahead, carefully repatriating everything to the garage.


Overnight Thursday had been extremely wet, with ample red, dusty rain coating cars, windows and garden furniture. Ursula was the obvious choice, especially given I’d just deep cleaned my fixed gear winter/trainer.  


Swift, compliant serenity was rudely interrupted by front mudguard stay chatter-just catching the tyre sidewalls over washboard tarmac. Annoying though. Having addressed another phantom click on Friday morning, I returned from Saturday morning’s blast convinced now was the time to switch the front end.  


Tools, cable, grease, and other essentials lain out, I commenced surgery. This took longer than intended and was defined by contemplative belching, barely audible agricultural utterances, and of course, diesel strength coffee. Wheel off, bar wrap peeled back, I slid the Univega’s triple-butted blades out and placed them gently to one side.  


Next came generous carpet of Peaty’s Assembly Grease PEATY'S BICYCLE ASSEMBLY GREASE | cycling-not-racing (sevendaycyclist.com) to the school chair fork’s crown race and everything was going to plan. The Gusset Headshock system also got a lick of grease before I introduced the mudguard and dialed the top cap’s preload, just to hold everything together. Ryde Andra 40/ Shutter Precision SD8 wheelSHUTTER PRECISION SD8 HUB DYNAMO | cycling-not-racing (sevendaycyclist.com) securely in place, I pruned the TRP cable outer further, remembering the measure twice, cut once mantra, and then fed the inner through the Tektro RL340 lever...


Fed into the outer and TRP Sypre SLC caliper, I was relieved to discover the pads hit the rotor with minimal lever travel. I then discovered that the mudguard stays weren’t long enough to connect with the Día Compe eyelet adaptors. Momentary dejection didn’t linger but my flash of initial inspiration (Bolting the left hand stay to the adaptor mount) caused caliper alignment issues.  


After some faff, I reached for some stocky black cable ties and tethered everything securely to the fork legs. No rattle, no flex. Aside from some minor cable and caliper tweaking, we were on the home straight. Bar dressed and tape secured with a spare finishing strip, I tweaked the Aheadset bearings. A couple of readjustments and rock-tests confirmed all was right, so I reattached dynamo cabling and Sigma BC9.16 computer sensorSIGMA BC9.16 ATS WIRELESS CYCLE COMPUTER | cycling-not-racing (sevendaycyclist.com). Tyre pressures checked, it’s time for some shakedown rides and to bed in the stopper...Oh but before I do that, here’s my review of the Shimano Alfine Hub Dynamo Shimano Alfine UR700 Hub Dynamo | cycling-not-racing (sevendaycyclist.com)