Bottom Bracket Bites The Dust

 

Once again, Ursula's front mech began misbehaving. The first time, I returned and discovered some slop in the Hollowtech II crankset. Hmm, curious, but nothing a quick tweak of the bearing tension wouldn't fix, right? 

The following outing and yep, the play hard returned, signalling the ti bottom bracket's cartridge bearings were spent. I'd bought a couple of XT units in preparation for this, or similar expiry.  No time like the present.

Being well greased, the crankset and bottom bracket released very easily. I gave Ursula's bottom bracket shell a careful cleaning, introduced some Oxford Mint Assembly Grease Oxford Mint Assembly Grease | cycling-not-racing, applied a light coating to the XT bottom bracket and then sped it home.  Talking of grease, Steve’s been long term testing this Blub Lithium GreaseBlub Lithium Grease | cycling-not-racing

I went the deep clean route with the rings and spider a ride or two later but was more concerned with getting everything home and ruling out anything else. I reached for the Peaty’s Speed GreasePEATY'S SPEED GREASE | cycling-not-racing and applied this to the Deore cranksets axle, reducing the friction, while keeping corrosion and similar hassles at bay. A quick nudge of the 10mm preload cap, confirmed my diagnosis was correct, the titanium unit’s ceramic bearings were indeed shot.

Double checked, I wound the pinch bolts home to 14nm, spun the cranks-all sorted. Another little job off the list, although in retrospect, I might've been better served going for the XT following Ursula's frame refurb and modification.  Some greasy finger marks adorning the right chainstay and bottom bracket shell were effortlessly dismissed with the BBB Bio Ready wash and a retired sock.

During this phase, I was also convinced I had another, a third Hollowtech II bottom bracket hiding away in the spares boxes. With a little time on my hands, I took this opportunity to root around, emerging victorious. It features the usual fit n’ forget bearings, aluminium cups and a composite component. This saves 20g or so over the titanium Van Nicholas, although I’m confident the bearings won’t last nearly so long.  Nice to have another handy, though-even if only as a stop-gap.

A few weeks and many mixed terrain miles down the line, the CST Patrol continue to impress with their all-rounder prowess, proving suitably swift on pockmarked asphalt, unmade roads and dirt trails. Impossible to comment on their mud churning prowess given it's been refreshingly dry of late. The EPS belt seems similarly effective at keeping flints and other sharps from causing mischief. However, rains and boggy conditions may tell a different story.  

Staying with tyres and inflation, I’m extremely fond of mini-inflators, which while not quite magic bullets, save time and effort when recovering from wounded butyl. I’ve tested a fair few in recent months and to date, my favourite is the CYC PLUS AS2 Pro Max E PumpCycPlus AS2 Pro Max E.Pump | cycling-not-racing . The relatively large battery will inflate up to 4 tyres between charges, which is great for longer rides, especially bigger volume gravel and mountain bike rubber. It also features a digital pressure gauge, taking the guesswork out of things, so there’s only operator error to blame if you’ve whacked in too much pressure.

More compact models fit better in jersey pockets. I’m fond of Muc Off’s Air Mach Electric Mini Inflator Muc-Off Air Mach Electric Mini Inflator | cycling-not-racing  it charges from zero to 100 in 25 minutes and capable of 100psi. However, and this goes for other designs with 7.5v 300mAh batteries, I’d advocate carrying a decent pump as a backup, should you succumb to a further, or multiple flats during a ride.

Against this backdrop, I’d spotted their PRO version, which in my view is a great improvement and could give the competition a good run for your hard earned. £100 buys a model capable of 120psi and will inflate up to 4 tyres between charges, which only take a few minutes longer than the standard model. This is also quite impressive, given Muc-Off has opted for a 7.4v 450mAh, which improves power output but without unduly increasing bulk.  

The Pro also incorporates a digital gauge and auto cutout when the desired pressure is reached, which is super convenient and a very welcome upgrade. Other improvements include a screw on extension hose for TPU valves since these can melt (it’s also recommended when tackling Schrader), a ball needle for footballs, beach balls and similar items we may pick up on a family, or group ride.

The instructions give guide times for various tyre sizes when fully charged. 26inch isn’t included but there are sufficient comparators for me to cross reference claims during testing.   

This Velo21 mini adjustable torque driver wrench. Unlike the preset types I’ve been testing recently, its adjustable between 4, 5 and 6nm, which should cater for contact points- a seat post adjustment, loose stem face, Aheadset bearings, cable pinch bolts, 6 bolt disc rotors, disc callipers to name but a few. Formative impressions are favourable, as is the price, so we'll see what the next few weeks and regular fettling reveal...  

 

Smiling Through The Slush

 

Winter had returned with a white blizzard. The air temperature had been around 2-3 degrees but windchill meant it felt closer to minus 2 and visibility was also dropping. Something that sprung to mind while I was out on Denise. I'd donned the Castelli Espresso JerseyCastelli Espresso Air Jacket | cycling-not-racing and Bib TightsCastelli Espresso Bib Tights | cycling-not-racing, Waterproof jacket, waterproof socks, Shimano MW7Shimano MW7 (MW702) Gore Tex MTB Shoes | cycling-not-racing, traditional polyester/cotton cap and the Lomo waterproof gloves. Toasty enough to focus on the conditions. Thankfully, it hadn't frozen overnight, so the roads and lanes were just soft and slushy under tyre.  

 

The MW07 had also become as filthy as they were before I'd deep cleaned them only the day before. Much the same story with Denise, mucky spatter clinging to the down, seat tube and rear triangle. I’d decided to give her a good sudsy bucket wash every four rides, mitigating the risk that winter might take a bite from anodising and pretty paintwork, although decent quality waxes and an absence of gritting lorries along the lanes and B roads certainly helped.  

 

During this phase, I was beginning to question my enthusiasm for lighter weight lubes, but decided I'd stay with them, for the time being. Better more regular application, than a grinding paste. There was plenty of waxy gunk falling away from the jockey wheels during the latest deep clean.  

 

While combing through the cassette, the tool literally disintegrated. Not totally unexpected-I’d had it years and, in my experience, the witches brew of old lube and solvents usually dissolve them. Bin fodder, but I’d enjoyed the satisfying process of coaxing lumps of congealed, waxy stuff from the jockey wheels and derailleur cage. According to the chain gauge, there was plenty of life left in the KMC chain, which was another welcome find, so I stripped the side-plates of residual lube and scuzzy stuff, then reapplied some of the Peaty’s Link Lube All Weather.   

 

We're quite fond of Blub's range of lubricants, although they seem a little quirky. For example, the ceramic Blub Ceramic Chain Lube | cycling-not-racing and dry Blub Wax Lube | cycling-not-racing blends will need reapplying if bike(s) are left standing longer than 48 hours between rides, which might be a moot point on a commuter, or daily driver, but not ideal for sunny day's playthings. Talking of which, Steve's been long-term testing their P Wet lube Blub Wet Lube | cycling-not-racing 

 

 

I’ve decided I’ll switch the Deore crankset’s plastic bearing pre-load cap for a CNC machined aluminium alloy unit, designed to be adjusted using a 10mm Allen key. These are heaps more convenient-especially if I need to snug the bearing preload mid ride. This induced some foraging in the spares boxes- I knew I had one somewhere...Sure, I could buy another for £6 or so on the auction sites but knowing I already had one doing nothing irked me.  

 

Thankfully, I’d located one within twenty minutes, inducing a loud cheer. There are models designed for 8mm Allen keys, which would be easier still, given they’re a common feature on contemporary multi tools. However, with the Oxford Torque R10 Mini Ratchet runs a ¼ inch adaptor, thus widely compatible with other bits, so you can build a custom kit for the road. In many respects, this suits me down to the ground.  

 

However, there’s a lot to be said in favour of the pocket workshop types with chain tools-they can be popped in your chosen luggage and will cater for most situations. Indeed, I’d probably steer those starting out to one of the pocket workshops. Lifeline LIFELINE 18IN1 MULTITOOL | cycling-not-racing   or Passport CDW PASSPORT CDW MULTITOOL | cycling-not-racing  have impressed us. Muc Off 17 in 1 Multi Tool Muc-Off 17 in 1 Multi Tool | cycling-not-racing  is another solid option, if you were seeking a very compact model. 

 

I’d been a little conscious that Denise’s carrier and mudguard eyelet threads were exposed.  

I’d put a drop of winter weight chain lube on them as a preventative measure, but recent wet and muddy outings convinced me it was time to blank them off. A rummage in my fasteners draw unearthed four suitable candidates. Dipping the threaded ends in some Oxford Mint Assembly Grease Oxford Mint Assembly Grease | cycling-not-racing, I sped them home with a 4mm Allen key. 2nm is reckoned the best torque setting for these, and similar fasteners, but I literally just wound them to the bare minimum. A small, but strangely satisfying tweak while I was waiting for the tumble drier to do its thing.  

 

Alternatively, you could go for some Zits. No, not the sort you punished the mirror with during your teens, I’m referring to these Portland design Works (PDW) Zit Bitz PDW Zit Bitz | cycling-not-racing which are designed to blank off unused threaded bosses on your frame, or fork. They’re not intended to take any loading i.e. hold a rack, mudguards (fenders). Aside from adding some colour, dare I say “bling” to your bike(s) they prevent rain and other ingress sneaking inside and creating mischief- rust-stained bottle bosses, no thanks!   

         

 

Temperatures continued to tank over the coming nights, prompting a switch to Ursula and the Schwalbe Ice Spiker Pro. However, in practice, the roads remained thawed, and slushy come sun rise, so I stuck with Denise.  I’ve been pleasantly surprised by how well the Continental Pure Contact Tyres have coped, cutting through and shedding churned gloop much better than I was expecting. That being said, knobblies can rapidly become slicks in these conditions. 35mm cyclo cross designs are an obvious alternative to gravel specific rubber. Hmm, watch this space..