Showing posts with label bicycle tires. Show all posts
Showing posts with label bicycle tires. Show all posts

Wednesday 30 August 2023

Wrong Turns & Bum Steers











 No, I’m not referring to more headset dramas. Thankfully, the fleet’s Woodman, FSA and Stronglight are all buttery smooth and without play... 

Looking back on things it had been one of those days and serves as a reminder of how tiredness can impair judgment and lead us down some very blind alleys. Cycling and motorcycling are powerful metaphors for wider life, whether its touring, racing, or just well, riding. 

 

Diagnostics rather than repair are often the involved process and if you’ve started from the wrong point, then everything else will be “off”. Rather like being lost, following that same road will often lead to frustration and wasted time, sometimes (and where possible) its best to pack up and resume another time.  


Ursula’s chain had been jumping when climbing in the small ring. Chain and cassette were in nigh on perfect health, so I assumed it might be the Tiagra mech gumming up, maybe a cable issue...Fast forward to that Saturday afternoon. I’d been treating some minor corrosion on the KA and Micra’s sills and some minor grot on the latter’s door skin.  


As the photo illustrates, the Micra’s was deeper than first believed, requiring two hours welding. Anyhow, I’d given the first coats of marine primer a few hours curing and was waiting to apply a final thin coat.  


I decided now was the time to investigate Ursula’s drivetrain glitch...Spoiler alert, the KMC chain was too long, causing it to kick up. Pruning it from 110 to 104 links the following afternoon cured the problem. However, this wasn’t obvious to me the previous evening. I started by cleaning the Tiagra mech and assessing springs, alignment etc.  


Next thing I knew, I’d replaced the inner cable and even switched mech... No joy (obviously) but I’d an idea that perhaps the Microshift bar con was in fact an mtb version i.e., the pull ratios being different and thus ultimately incompatible with the Tiagra. Nope, not the root issue.  


Weary and dejected, I put Ursula away and downed tools for the day. Following morning, while on another mission, the penny dropped- chain too long! Returned that afternoon, switched the mech and cable, then pruned the chain.... Huzzah, up and down snappily and in both directions. I dare say there’ll be the odd quick tweak in the formative rides to come, but relieved and crucially, quit while ahead.    


I’ve been putting this System EX Grease Gun through its paces- hubs, headset bearings, seat posts etc. I’m still fond of the Finish Line Grease Gun, which has served me very well for a decade or thereabouts, but the System EX is all metal and has an extension for really detailed, mess-free delivery.  


Perfect for fasteners and similar small parts. Made me wonder what had happened to my old-school Dualco Mini Grease Gun. I’m confident it's safely packed away and wasn’t liberated post-move. Park GG1 looks very similar, save for the finish. These have some definite charm, assuming you’re not wanting, dare I say needing to switch between different types.


For these reasons, I’d probably go for a fully synthetic blend of grease, such as the White Lightning Crystal High-Performance Clear Grease TESTED : WHITE LIGHTNING CRYSTAL GREASE (sevendaycyclist.com) which can be applied to pretty much any component without fear of it doing something nasty to seals and delicate rubberised components.  


Generally, reliable, I’ve found the Dualco can “ingest” air, interrupting flow rate, so you’ll need to purge by slackening the top and inserting a screwdriver into the base and forcing upward until all the air is expelled. Not a big job but can take a few attempts, which can be frustrating if you’re mid-job.  


As for the System EX and Finish Line designs, these also need to be packed tightly. Fill the gun by hand and then, with chosen grease threaded tight, pump the tube until grease flows easily while depressing the trigger.    


From there, it's pretty much squeeze and goHowever, if you’re having issues, unscrew the gun, squeeze some grease into the chamber and then pump the tube, like a piping bag, or toothpaste until the grease rises to the top of the tube. Repeat as necessary until the tube’s spent. 


Elsewhere, The Hutchinson Challenger have arrived. Ours are the tubed, tan wall 28mmm versions reckoned good for 5,000kms and allegedly a more supple compound than typically found on other “endurance” models. It will be interesting to see how they compare with the Maxxis Re Fuse TR MAXXIS REFUSE TR FOLDING TYRE | cycling-not-racing (sevendaycyclist.com), which are still serving faithfully on the fixed gear winter/trainer. Ending on a tyre-related note, here’s my review of the Topeak Smart Gauge DX2 Topeak Smart Guage D2X | cycling-not-racing (sevendaycyclist.com) 

      

Thursday 30 September 2021

Pre-Hibernation Tweaks










 

I’ve been settling to some little jobs before Holdsworth, and Teenage Dream enter seasonal hibernation. I’ve decided to revise the Holdsworth’s stem spacer height and replace the budget expander wedge. I’ve also decided to switch the Teenage Dream’s rear tyre. While I love the Vee Tire Co Rain Runner infinity’s speed, they seem slightly susceptible to punctures, so I had a rummage in the rafters, hoping to find these Schwalbe Lugano TESTED: SHWALBE LUGANO ROAD CYCLING TYRES (sevendaycyclist.com)   


A little portlier and erring more towards commuting and winter training, but given my preference for dawn blasts, some additional reliability is welcome. Instead, I found a solitary 25mm Freedom Thick Slick (which the Holdsworth is shod with), so popped that on the rear. I would’ve preferred a matching set but aesthetic pedantry aside, some would argue this is another example of personalisation and for now, I’ll stick with that!   


I’m still researching potential replacement(s) for the Schwalbe Marathon Mondial Dual Defense, which have done 7,000miles and still going strong, although starting to show some formative signs of wear. There is a school of thought recommending alternating front and rear tyres for longevity.  


I can see the merits on paper. In practice this is a dubious practice-whipping a partially worn rear up front is inviting a very nasty face-plant on a wet, greasy ride. I will often switch the part worn front to the rear, to get my money’s worth, but then, a brand spanking new tyre goes up front! 


No sooner had I switched Ursula’s chain to the Peaty’s Link Lube Dry PEATYS LINK LUBE DRY CHAIN LUBE | cycling-not-racing (sevendaycyclist.com) this Muc Off Ludicrous AF arrived in the post. Claimed to be the world fastest lube brewed for road, mtb and triathletes, it promises to perform in temperatures as low as minus 20, and extend chain life, so it will be interesting to see how the next few months pan out.  Typical of high-end lubes, chains need to be surgically clean before applying and Muc-Off recommends leaving it a full 24hours curing. 

 

One thing led to another (as it invariably does, with me) and before you know it, I’d whipped Ursula on the work stand, out came the rear wheel. Shifting had been slightly off again and I suspected this was down to the cassette's lockring working slightly loose. Snugged tight with trusty cassette tool, I also suspected, the microshift bar con needed to be dialed fractionally tighter- a slight, clockwise turn of my 4mm Allen key-sorted. Out came the sudsy bucket and sponge and the old girl was gleaming again.  


Chain, ring and cassette exorcised with solvent, I drizzled Muc-Off Ludicrus AF into the links. The Teenage Dream’s drivetrain received identical treatment, coinciding with the tyre swap and a review of the wedge pack. Dead CO2 cartridge was consigned to the bin and given the Uk’s present shortage of said gas, it might be a while before I acquire some more... I’ve also been witnessing extensive panic buying of fuel.  


Traffic backed up along the streets, reminiscent of the last fuel shortage, during the summer of 2000. In the corner of London where I was living, some people were actively trying to scale the tankers. On one occasion, I had two 20 litre MOD jerry cans full of leaded fuel for motorcycles (older Japanese machines, though designed for unleaded, had no problems with the more toxic blend).  


People were begging me to sell them it (some more aggressively than others). Leaded petrol is ruinous to catalytic converters, as several hapless people discovered, having filled their late-model Toyotas.  Whether the UK will assume a state of compulsory rationing, last experienced in the early 1970s remains to be seen.    

  

Back on two wheels, I’ve been pleasantly surprised by the Sigma Infinity Rear LED Light SIGMA INFINITY REAR LED LIGHT | cycling-not-racing (sevendaycyclist.com) it’s compact, bright and simple, with favourable run and charge times.  Those looking for a super potent rechargeable front light may like to take a look at The Ravemen PR2400 https://www.sevendaycyclist.com/ravemen-pr2400-front-light