Showing posts with label 700c tyres. Show all posts
Showing posts with label 700c tyres. Show all posts

Thursday, 2 April 2020

Heavy Duty









The present lockdown is presenting considerable challenges for everyone. Stoicism, riding and creativity are my coping mechanisms. Broadband and similar connectivity are also creaking under the strain, presumably as there’s unprecedented demand. In my case, I'm also at the very end of this line. 

Experiences with standard (and otherwise very serviceable) track chains, such as this SRAM PC1 have led me to conclude that beefy ½ link track types are the best fits for me and my fixed gear builds. Models such as the PC1 and this Passport Elements Anti Rust Chain https://www.sevendaycyclist.com/passport-elements-single-speed-chai  are pretty good choices for bikes with single speed freewheels but fixed transmissions are subjected to greater stresses. 

Traditionally half-link chains were aimed at riders of conversions (i.e. geared framesets that have been converted to fixed gear use), where getting chain tension/length just right can be particularly tricky. There’s a lot of conflicting debate regarding their benefits and indeed, otherwise.   

I’ve switched to this KMC Kool HL710. White isn’t the most obvious colour choice but neutral enough and going for the proverbial song.  Before its arrival, I discovered my fixed gear winter/trainer’s rear Schwalbe Marathon GT decidedly flaccid.  

A flat, though thankfully fixable. However, the GT’s casing was starting to wear a little flat in places, so I took the opportunity and swapped it for this Vee Tire Co Zilent. https://www.sevendaycyclist.com/vee-tire-co-zilent-tyre

This one is a 35mm section, though seems fractionally narrower than the Schwalbe, which isn’t necessarily a bad thing either-gives a little more breathing space within the chainstays. The Zilent are a similar breed of tyre. One aimed at e-bikes and commuters.  

In common with the Schwalbe a two-layer puncture repelling armour. Works to the same capillary principle, pushing sharps out, before they can nick the tube. Operating pressures are a little lower, ranging from 35-65psi, whereas the Schwalbe Marathon GT go to 85 psi, the 42mm Zilent has a range between 45 and 80 psi).  

The Zilent2 https://www.sevendaycyclist.com/vee-tire-co-zilent-mark-2-tyres was devised upon discovering people were using the original Zilent for long-haul touring-something they wasn’t intended for and resulted in sidewall failures.  Up front I substituted the sprightly and compliant Soma Fabrications Shikoro https://www.sevendaycyclist.com/s  for the Continental Contact plus.    

I’ve gone for the 37mm- gives a little extra clearance upfront (not that it’s ever been an issue with the 42mm). The 37mm Contact Plus run between 65 and 85psi, whereas the Shikoro range between 35 and 90psi. 

Sure, the Contact Plus are a very different tyre, compared with the Shikoro. Closer to the Vee Tie Co Zilent, in fact, which should make for a very reliable, reciprocal mix. 


Despite the country being on “Lockdown” I’d be surprised if the police have the resources to enforce, beyond densely populated towns and cities. I’ve noticed a pronounced spike in the amount of fly-tipping. Discarded (broken) beer bottles also seem more prevalent and would also explain my switch. 

Shipping the Contact aboard the front Halo Evura https://www.sevendaycyclist.com/halo-evura-shutter-precision-sl9-dy hoop proved unexpectedly challenging though. It claimed two basic resin levers and almost sent a very nice Pedros’ over a 6foot fence. In the end, this VAR won the battle. Suffice to say, I’ve stashed that in the Carradry, in case I should flat by the roadside.  

Not been an issue with these, or their 42mm counterparts to date, although it’s worth noting that, no matter how rugged your rubber, tubes can fail at the valve heads. So always advisable to pack a spare or two, decent tyre levers and of course, a pump. I carry two mini pumps, and three tubes just in case.  

Overkill in some respects. However, one tube may get another stricken rider home and they consume nominal space in the SQR tour and Carradry bags. Oh, staying with tyres and inflation, Steve’s been quite impressed with this Zefal Profil Max FP60 Z-Turn Pump https://www.sevendaycyclist.com/zefal-profil-max-fp60-z-turn-pump 
This lovely CNC machined ring arrived from Raval. Made from CNC machined stainless steel, the climb down from 42 to 38 teeth gives a range between 34 and 89 inches. True, I sacrifice a little top end but gain a bit more mid-range, which is arguably more practical/efficient, given the bike’s design brief.  

Oval rings are to some an unusual, arguably controversial concept that comes in and out of vogue. Shimano Bio-Pace was the one most remember but several brands, including Stronglight (Bio strong) and Suntour (Oval tech), joined the bandwagon. However, oval rings have been making a quiet but steady return since 2014. I’m looking forward to racking up the miles on ours.  

No, not nostalgia talking (although it was popular during those halcyon days where I discretely read the cycling press and ogled high-end bikes, from my desk, while world-weary teachers feigned interest in us and in some cases, the curriculum being taught).    

Monday, 5 August 2019

Melting, Musing, Blasting & Stopping







Not surprising perhaps, since the UK has recently experienced, the hottest day on record. It was a stonking hot week, at least here in the South East. Even nocturnal rides, testing lights, were close and muggy-hovering around 24 degrees. 

Day rides, saw emulsion and wax types chain lubes melt. Literally coating the drive-side crank arms in a sticky residual layer. On that quickly contaminated shoes. Thankfully, these were easily dismissed with a gentle solvent. 

Beeswax furniture polish for the crank arms, leather conditioner cum food, the shoes. Internal frame preserves have also turned very fluid, but not to the stage where its gushing from the frames "breathe holes" , engulfing the chainstays/hub etc. 

I can function well enough in these temperatures, although maintaining a steady 20 mph for 20 miles, can be challenging-even with sufficient fluids. Designs like the back bottle (link & photograph) come into their own.  Though there are some minor downsides, I've come to really appreciate the Relaj Shape Bottle's design too.

Popping ice (or pour 70% full of water, then freeze) and placing in a jersey pocket brings welcome, cooling relief. I'm also pleased to report the Funkier Force Pro Bib shorts https://www.sevendaycyclist.com/funkier-force-pro-bib-shorts  have certainly cut it in the comfortt stakes. They also offer plenty of bang, for very modest buck, in other respects, too.  

For the most part, I'm resistant to testing new shorts and saddles, in case both are mutually incompatible. Far fairer to run an old favourite and see how things measure up. Hygiene aside; I have alternated between different bibs to see how the saddle covering behaves. 

Am I able to make minute adjustments, am I surfing around, or do I feel like I'm perched atop a sheet of flypaper? The first scenario, is my particular sweet spot. Now, I would appear to have braking on the brain, at the minute, at least given my last few entries. 

Only because the more powerful and controlled my machine's stopping prowess, the faster I can go (to a point and within reason). Some would argue (with some justification) that a disc setup is overkill on a fixed. True, a well-honed cantilever will haul me and 20 kilos of payload to a controlled, predictable halt-even along a 1in 7 pushing 30 odd mph. 

However, on a four season's machine, one running a single stopper, disc is an obvious choice. I have run Tektro Spyre on mine, for several years now. Its a twin piston design, widely regarded the benchmark for cable operated systems. A sentiment I'd agree with. 

However, time and technology marches on. I've been keen to try Clarks CMD22 Dual Piston disc brake and Rever MCX1 systems to see if they have an edge. Dual piston designs have several advantages over single pistons, such  as Avid BB5 and BB7. 

Firstly, both pistons move an equal distance, thus connect evenly with the disc rotor. Therefore, even wear of both consumables, superior modulation and feel. They're also markedly easier to setup and maintain. There are some folks who "advocate" consigning the humble cable-operated disc, to the vaults of history. 

Modern hydraulic systems win hands down, in competitive contexts. No need to dial in the pads to compensate for wear, open systems do that automatically. 
Indeed, provided you don't kink/damage the hose, stick to the correct fluid and observe service intervals, they're fit n' forget. A few months back, I was lusting after TRP Hylex but couldn't secure a set, at the right price. 

I've no doubt they'd convert me within a matter of lever actuations, mind. Such lust has been tempered by the arrival of these Clarks CM22, which I shall whip aboard and dial in very shortly.  
160mm rotors have been my default, as they have an advantage in the stopping stakes (although some suggest 140mm, are fine for 'cyclo cross). 

Never be tempted to skimp of cable quality, mind. These are also central to getting the very best from them. I'd suggest compressionless, and decent cutters. Something like these Jagwire Pro Road https://www.sevendaycyclist.com/jagwire-pro-road-brake-kit and Super B TBWC30 Cable Cutters https://www.sevendaycyclist.com/super-b-tb-wc30-pro-cable-cutters

Not that I was going to go very far with a flat tyre. To my surprise, my working fixed's ultra dependable Schwalbe Marathon GT, had succumbed to a flat. No sign of anything sharp in the casing, so I fed it a tube from my tube rack, along with another spare for the SQR Tour. 

Wheel, home, chain correctly tensioned and we're ready to let the good tmes roll again.   I will probably switch to the Vee Rubber Zilent Tyre, once the Maraton GT comes of pensionable age. https://www.sevendaycyclist.com/vee-tire-co-zilent-tyre   It'll save a few grams too, especially the 35mm (as big as said bike's rear triangle will entertain). 

Several hundred miles in, I'm not surprised the fixed's SRAM has negligible wear. As a rough n' ready, even through a harsh winter, I can  expect 3,000 miles from a fixed chain. Nonetheless, and regardless of your chain types, its good to check their health frequently. 

Replacing chains by, or before wear hits 0.8mm, saves a lot of unnecessary erosion, and ultimately, expense replacing rings, cassettes and other components. I prefer the digital models but simple, nickle plated anaologue models give change from £5.   https://www.sevendaycyclist.com/torque-chain-checker

Sunday, 18 March 2018

Pest from the West












No, not that one.Tthankfully, after several years, she appears to have finally accepted her approaches are unwelcome, and non-reciprocal.
 
Serial, uninterrupted monogamy is, in my experience, often practiced by those who don’t want to work on themselves. Moving from one partner, without taking stock and investing in yourself, is an avoidance strategy.
Each relationship inevitably fails because the other, unwitting party cannot fix them. So, they move to the next and this cyclical shift perpetuates. A complete waste of time, emotional and monetary reserves. We all have our lessons to learn. Some choose not to.
I am referring to the persistently wet/windy weather front. One that has compelled me to tolerate a filthy fleet. On the flip side, during drier spells, let alone brief periods of sunlight, I’ve been testing the mettle of assorted bike washes.   
Crankalicious ceramic chain lube arrived at SDC HQ and was passed to Steve, esteemed co-editor and touring aficionado. However, the fixed’s links looking distinctly thirsty, prompting the introduction of some Finish Line Ceramic Wet. I’m reasoning this will be an interesting comparator and in ideal testing conditions.
Bucking the trend for curing periods, both are pour, wipe and scoot off, which is welcome when time’s not on your side. Elsewhere the SKS lube your chain formula is also going strong, 180 harsh miles hence. It looks a filthy, congealed mess but I’m assured this is locked in the top layer and not chewing components.
The Schwalbe Active Winter https://www.sevendaycyclist.com/schwalbe-winter-spiked-tyre  remained in situ on the Univega, given further snow was forecast. I wanted the option of getting some miles in, regardless. https://www.facebook.com/Sevendaycyclistmagazine/posts/1863791363651786?notif_id=1521379387031484&notif_t=page_post_reaction&ref=notif  Another title I freelance for, have sent me these Panaracer T-Serv PT Folding 700x32C.
Vee rubber have also sent me their 700x32 Zilent and and their 42mm Baldy. Will be interesting to see how the latter compare, speed-wise with Maxxis Roamer https://www.sevendaycyclist.com/maxxis-roamer-tyres  
These, as their name implies; are aimed at the urban market Soma Shikoro https://www.sevendaycyclist.com/s , are my favourite big(ish) section all-rounders Quick acceleration, smooth passage over lumpy sections, at 464g apiece, they’re a little heavier than the Panaracer (As you’d expect. However, they’re also made, under licence, by them).
Over the years, I’ve hustled around the capital on everything from 20mm to 2.1 inch, generally settling for 26x1.5 (or thereabouts) due to their balance of speed, comfort and control across badly surfaced, glass strewn tarmac. Otherwise; 32mm was my default for touring and general road biased riding.
It was also the biggest section many 80’s touring bikes could swallow without fouling; or forgoing full length chrome plastic mudguards. Personally, I’m happy to leave fag paper clearances and toe clip overlap in the dim and thankfully distant past.  
With this in mind; there are some frames, components and other, unrelated objects I’d like to own from this and other eras. At the right price… Some would argue that Nostalgia’s true power is the commodification of emotions, those we attach to objects.
Subjectively, a MK III Norton Commando is a nice motorcycle. However, its outclassed, totally eclipsed by modern machines. Therefore, I wouldn’t entertain the £20,000 “market value”, nor would I’d pay fancy prices for air cooled type 1, 2 and 3 VW cars.  Yes, I am fond of them but regard these things as working vehicles, not museum pieces. The same applies to my 1991 road bike, aka “The Teenage Dream”.
A fair-weather machine but a bike ridden in fair weather, nonetheless. It’s fun to ride yes, there’s a deep sentimental bond and no I wouldn’t willing   part with it. That aside; I certainly wouldn’t pay some of the prices I’ve seen comparable machines being offered for.
Another, arguably more positive/optimistic account of nostalgia, is that it (according to Sedikides and Wildschunt) “Is shown to be both a driver of empathy and social connectedness, and a potent, internal antidote for loneliness and alienation”.
Indeed, Sedikides suggests nostalgia is the “perfect internal politician, connecting the past with the present, pointing optimistically to the future”. Whatever your particular perspective may be, its food for thought. I’ll leave you with a few shots from my booking with Louise, a delightful ballet/dance and lingerie model.