Showing posts with label dual pivot calliper brakes. Show all posts
Showing posts with label dual pivot calliper brakes. Show all posts

Tuesday 13 February 2024

When Things Go Smoothly...













 I’ve seen a bit of bar con bashing online recently. In common with others who are vocal in their destain for things, much of the comments come from ignorance, so are arguably irrelevant. Some suggesting cables run THROUGH the handlebars. Sure, they’ve fallen from mainstream gaze and lack the light, snappiness of Brifters but they’re also lighter and ultra-dependable. Great for back of beyond touring, beasts of burden, and indeed, daily drivers like Ursula.  

Microshift still makes them (and continues the dependable theme with their Sword and Advent group sets). Hot on the heels of the Spyre SLC, Ursula’s rear Shimano CX50 cantilever pads had gathered some glaze and needed a quick scrub. It also presented the opportunity to strip and lightly grease the posts. The straddle wire was also beginning to look tired, so was also replaced. Consumables are eaten quickly through winter, especially if you do bigger mileages.  

I’d spotted a rear Tiagra mech, pads etc being sold as bankrupt stock and at very enticing prices. Sad, since it’s never good to see, or hear of businesses going to the wall. In the late 80s, it was common for people without business acumen, financial literacy, or experience to open enterprises and often fail catastrophically. However, it's become increasingly prevalent for established and successful traders in post-Brexit Britain    

Little and often maintenance becomes second nature, extends the life of components, and usually stops trouble before it starts. I’d applied a light helping of Muc-Off HCB1 to Ursula’s chain stay bridge area and the BBB Echelon saddle rails, which were showing some localised corrosion.  

Again, nothing to get excited about at this stage and HCB1 will mothball, stopping surface grot in its tracks. Yes, generic maintenance sprays will certainly help on this front, but need more frequent reapplication and are readily washed away. They’re meant for light lubrication of cables, and pivot points, flushing wet, corrosive stuff out, priming chains removing muck, and grime, loosening sticky/lightly corroded parts    

Back to the Holdsworth 

Having removed the Woodman Jupiter’s lower cup cum race with a few deft taps of my trusty crown race tool. (It also needed a little chemical assistance, courtesy of some Muc-Off MO 94). I set it carefully on the Holdsworth’s crown and decided there was sufficient Park PPL100 TESTED: PARK TOOL POLYLUBE 1000 LUBRICANT FOR BICYCLES (sevendaycyclist.com) grease dressing its needle roller bearings, so just transplanted.    

 

The Jupiter’s design means it's extremely well-sealed from the elements, so an obvious choice for MTB and XC duties. Ironic perhaps that the Holdsworth and Teenage Dream are fair-weather playthings, but the Woodman’s design and refinement (coupled with the fact decent-quality headsets were becoming harder to source) swung it for me. Forks in, it was simply a matter of stacking up the spacers, refitting the cockpit, connecting the front brake, adjusting pad height, and the usual tweaks.  

 

I like the slight contrast between frame and fork, accentuated by the Knog NERD computer’s blue silicone casing. Had the fork been any darker, it would’ve looked a little too obvious (although could be toned down with a comparable, darker shade of blue bar tape). Anyhow, mission complete.  

 

Elsewhere, the switch to MKS NJS chain tugs subverts the need to detach the Topeak DX rack when accessing track nuts- adjusting the chain tension or removing the wheel-problem sorted.  

 

I decided now was the time to see how well the Peaty’s Speed Grease PEATY'S SPEED GREASE | cycling-not-racing (sevendaycyclist.com) was holding up on Ursula’s Hollowtech II axle, given the flooding and generally adverse conditions of recent months. It also presented an ideal opportunity to give the rings a good scrub. As the photos suggest, a reasonable amount of Peaty’s remained and was still doing its friction-busting, corrosion-stopping thing.  

 

However, I’d come this far and opted to strip and introduce this Wolf Tooth WT-G Grease. It’s a synthetic blend designed primarily for moving parts- hubs, headsets etc but apparently fine for contact points and threaded parts. Its reckoned stable between minus 50 and 180 degrees and promises low friction, longevity and high resistance to water, oxidisation and corrosion.  

 

The crank’s pinch bolts were completely devoid of grease, so were a little reticent to release. Nothing a shot of MO94 couldn’t sort, so I was sure to add a generous lick of the Wolf Tooth grease to them before refitting and torquing down to the recommended 12-14nm. Buttery smooth once more. The headset’s bottom race came next, and I stripped the rear Shimano CX50 brake, greased the canti posts and replaced the straddle wire.   

 

Talking of which, it's much easier to apply than some higher viscosity formulas – Juice Lubes Bearing Juice being a case in point, although the latter is really stubborn and being so thick makes a great host for loose balls. No escapees in the hub shell. However, the Wolf Tooth is supposedly designed for contact points and similar duties too, so I’ll be checking that out in the coming weeks and possibly months 

 

Having switched the Holdsworth’s Miche Primato calliper for the long-reach Tiagra, I decided now was the time to upgrade the Teenage Dream’s lower end Miche Performance. Plenty of life in the pads, so I gave the callipers a quick clean and polish and bolted everything together. I’m sure I have the rear Primato somewhere in the spares stash. I’ll upgrade the Teenage Dream’s rear Performance unit when I unearth it. I'll close here with Steve's review of the Castelli Entrata Tights https://www.sevendaycyclist.com/castellientratatightsnopad 

 

Wednesday 21 June 2023

Race Against Time











 

 

No, I haven’t taken up time trialling (although I’m aware I’ve threatened to do so at several points during the last fifteen years). Maybe it’s a midlife thing but I'm increasingly feeling that time is slipping through my fingers and a relentless need to press on with things. In many respects this is positive, making the most of each day but it can also be exhausting-mentally. 

 

Dry, balmy conditions have meant plenty of extended playtimes on the Teenage Dream and I'm continually impressed by how well the CST Cito accelerate and handle. For me at least, 100-105psi seem their sweet spot and even the familiar tang of melting asphalt and stray, loose chippings haven’t held them back. If the balmy weather continues, I may pluck the Holdsworth from hibernation, give it a quick waxing using the Motoverde Waterless Wash & Wax and rack up some early morning summer miles Motoverde Waterless Wash & Wax | cycling-not-racing (sevendaycyclist.com) 


Similar story with the Maxxis Re Fuse, which have also continued to impress with their handling and relative compliance when run at 63-65psi. Dependability is also very favourable. I was expecting positive things, given their casings are an upgrade on the Silk Sheild system employed in the Maxxis Overdrive Excel, which is good, albeit with some limitations. The acid test of course, is how they hold up with a few thousand miles and a filthy, wet and dark winter under their casings.  


On the subject of tyres and pressures specifically, my long serving and much loved SKS Airchecker that I’ve had for 12 years or so, fell into a suitably deep, sudsy bucket while I was cleaning the fixedLiberal blasts of Motorex Joker 440 Motorex Joker 440 | cycling-not-racing (sevendaycyclist.com) were delivered through the battery compartment, before leaving it drying in strong sunlight with the battery compartment open).  

 

Nope, dead. I had entered a state of mourning, unable to consign it to the bin. Then, curiosity urged me to give it a final try. I reinstated the battery, and it sprung back to life!  


Fabulous build quality, design and ergonomics...Bar/PSI modes, orange backlight, dual (Presta/Schrader) head, bleed valve... A bit pricey for hauling along in a pannier, or more often, Carradice SQR Tour luggage CARRADICE CARRADRY SQR BAG | cycling-not-racing (sevendaycyclist.com) (I kept this wallet-friendly and very cheerful analogue Revolution model for these duties).  


The Revolution also features a dual head valve and a pressure release valve for those times when you’ve been a little enthused or distracted. Smart heads are super convenient, but their only downside is the design’s fragility, as they use a sprung mechanism. Though rare, (especially if you’re using them periodically- a couple of times a week) I’ve had them blow into smithereens at the least convenient moment, inducing some equally colourful language.

   

Against this backdrop, I’ve been sent these two Topeak gauges for testing. The Shuttle Gauge G2, which is a compact analogue model designed to be compatible with Presta, Schrader and Dunlop valves. It’s also designed to work with air shocks, so a good bet for carrying on the bike. I’ve also been sent the brands’ Smart Gauge D2X digital. Measuring 1.8x4.2x1.9cm and reckoned good for 260psi, there are quite a few similarities with the SKS, including the backlight and bleed valve but some refinements too-It’ll measure PSI, BAR and kg/cm2, for example.  

  

I’m appreciating the lighter mornings too, which are enabling longer outings and changes in route(s). The fixed’s chain is still sporting a decent helping of Motoverde Chain Lube with PTFE so no need to change and the Momum MIC Dry Oil Lube Momum Mic Dry Oil Lube | cycling-not-racing (sevendaycyclist.com)  seems a great seasonal fit for the Teenage Dream’s Sachs.  


It penetrates deep into the chain’s inner sanctum, requires 30 minutes curing time and is super clean. Given dawn is very prompt, I’m just running two potent blinkies on the Teenage Dream, while fixed and Ursula are sharing the See Sense Beam+ and suitably potent rear blinkies with daylight running modes for presence. Daylight running modes though not wildly so, still divide opinion.  

I’ll admit when they became “a thing” I was slightly concerned other road users would become “blind” to the few hundred flashing/pulsing lumens, rather like drivers tended to notice motorcyclists initially when machines started defaulting to this function, but progressively stopped noticing.  


There is some evidence to suggest these have a positive influence upon motor/cyclist safety but for cyclists at least, these need to be both bright enough and emit at the right tempo.   Lumens are not the only measure. Reflectors and lenses are arguably more significant since light must be projected efficiently and without causing nuisance.  


For example, I’m finding the Magicshine SeeMee150’s 45-lumen flash (more a pulsing in my book but nothing to get hung up over.) surprisingly effective. The Teenage Dream runs this Moon Nebula, which is a few years old but still in rude health and very capable. The 100-lumen daylight running mode certainly cuts it. However, the 20-lumen flash is also surprisingly effective, even around dawn 


One of the features I love about the See Sense Beam+ See Sense Beam+ Front Light | cycling-not-racing (sevendaycyclist.com) is the flashing mode’s intelligent setting, meaning it regulates output to suit conditions and the sensored technology is one of the most responsive and exacting I’ve found. It's also laughably frugal in terms of run times