Mr Tickle… Disciplining the TRP Spyre

 

No, I’m not referring to Roger Hargreaves creation, or the office letch…I’d been experiencing some very minor, intermittent tickling with Ursula’s rear TRP Spyre. Now, lifting the rear wheel and turning the pedals confirmed the rotor was true and the calliper correctly centred. Ditto the rear wheel.

Before touching anything else, pop the bike on the ground, slacken the quick release and ensure the wheel’s correctly seated within the dropouts. Snug the quick release down and close the lever.

Double check by lifting the rear wheel (popping the bike in a tune up stand, such as this Topeak, makes this and any subsequent tweaking much simpler.) In this instance, everything was behaving impeccably, so this left frame flex. It only happened under load, say when accelerating and would then smooth out. Thru axles are much stiffer, largely eliminating this issue.

Some deliberation and a quicker wander round the web suggested slipping a 3mm Allen key in the pad adjusters and backing the pads out fractionally either side. This would buy a smidge more gap between the rotor, without impairing stopping prowess. Accessing the pad adjusters was tricky, although this Oxford Torque R10 Mini Ratchet Set Oxford Torque RT10 Mini Ratchet Set | cycling-not-racing  came into its own.

Maybe it was psychosomatic but pumping the brake lever a few times suggested small but tangible improvement. Being as it was late in the evening, I wanted to quit while ahead, ruling out becoming wired, dare we say obsessional. Road testing was left until the following morning.  

The humble Spyre divide opinion and in my experience, they require a little more patience to setup and finer adjustments then onward. However, for the most part, they’re straightforward customers and much better fit for me than Avid BB7. Hybrid models, including TRP HY/RD are cable operated but employ a hydraulic reservoir, automatically adjusting pads as they wear.

They work well in my experience. However, the hydraulics are another thing to service. I’d even toyed with buying a different brand of rear calliper. Shimano BR-R517 and 317 seemed a good bet. However, there wasn’t anything wrong with the Spyre, so the sensible, cost-free (save for time) decision was to analyse, trouble shoot, tweak, ride and repeat. The intermittent tinkling continued and the only thing I hadn’t ruled out was rotor health.

Now, the rotor fitted came straight from the brake spares box, so was part worn and intended to get us going following Ursula’s renovations. Pensioning off seemed like a good move and would rule that out as a potential source. No amount of calliper alignment would work if the rotor was slightly warped. Not enough to create mischief in the work stand but amplified by minor flex under pedalling force. I’ve gone for a 160mm Disco brakes Wavey, since I had excellent experiences with one tested back in 2022 Disco Disc Brake Pads and Wavey Rotors | cycling-not-racing . It’s gone up in price but is stainless and very much a known quantity.  

Some Deore rotors going for the proverbial song (£10 pair) so indulged, since like most consumables, rotors wear out and at the least convenient moments. Since conditions allowed, I decided to whip out Ursula's Kinkekt2.1 KINEKT 2.1 SUSPENSION SEAT POST | cycling-not-racing seat post and blast some corrosion inhibitor down the seat tube, before the weather turned.

I toyed with the idea of making a butyl boot for the Kinekt post but didn't have any suitably broad scrap butyl to hand. Neoprene covers are one solution, but they also hold moisture, which can cause corrosion and similar problems later down the line. I dried the post and give the moving parts a shot of Muc-Off Silicone Spray MUC OFF SILICON SHINE POLISH | cycling-not-racing

One thing led to another-since time and weather permitted. The drivetrain was blitzed using Motoverde Drivetrain Cleaner Motoverde Drivetrain Cleaner | cycling-not-racing and Oxford Chain Brush Pro Oxford Chain Brush Pro | cycling-not-racing, followed by a through sudsy bucket washing and waxing.  Fully dried, I decided to use up some leftover Finish Line Dry Lube TEST & REVIEW FINISH LINE DRY BIKE LUBRICANT - it was a small, saddlebag size that I'd had since the dawn of time and just taking up space. 

I didn't fancy the wax route this time round but wasn't ready for a stodgier oil-based lubricant just yet. A quick shot of MO94 Muc-Off MO94 Multi Use Spray | cycling-not-racing on the cables, cleat mechanisms and pivot points to flush any residual water out concluded this impromptu post-ride fettling. I’ll close here with my long-term review of the System EX Pro Grease Gun The System EX Pro Grease Gun | cycling-not-racing

Seizing The Day

 

I’ve been tempted to replace Muffin’s front Mud Hugger Gravel Guard for something a little wider, having experienced some clearance issues with the 42mm Maxxis Roamer. For the time being, I’ve switched back to the 38mm Vittoria Adventure Tech and am enjoying a freshly repacked headset and the serenely slick cleanliness of the All-Mountain Style Miami Glide Wax Chain Lube

The economies of scale don't always work in our favour, but they make a lot of sense when its stuff we're frequently using. Bike washes divide opinion and generally speaking, I default to good quality wash n' wax formulas- 5 litres or thereabouts, since I also wash cars and other vehicles and £17 will last me at least a year, even though filthy winters.  However, dedicated bike washes can cut through the grime more effectively-especially impacted stuff.

A typical litre, readymade potion will cost £10, whereas a 5-litre concentrate will cost around £25 make at least ten litres. Price is not the only factor to consider. Some formulas, especially at the cheaper end of the market are not necessarily kind to disc brakes and other sensitive components. Other potential issues involve streaking and similar blemishes in paintwork and corrosion/oxidisation on aluminium alloys.

The shorter the standing times, the more aggressive the formula likely is and this can cause deterioration longer term. Especially when rinsed with warm water. During winter, where roads are typically gritted, rinse bikes with cold water FIRST, going straight for the warm sudsy bucket will simply accelerate the corrosive process.  

I've used and tested a wealth of different formulas over the years, and most have been competent. Some have left particularly positive impressions. 

Motoverde (previously Green Clean MX PRO GREEN MX TRIPLE PACK REVIEW) Bike Wash is one that can be left for 15 minutes or so, which really allows it to east into stubborn grime. A lot of people like a highly visual formulas (this also applies to other cleaning products-shampoos and conditioners) on the belief they are more effective.

In practice, a formula that clings to the host will breakdown grease, oils, mud and similar contaminant more effectively, resulting in deeper clean and using less product into the bargain. Reading the manufacturer's directions should be a given (but a lot of people don't).  Some, including the Motoverde are designed to work when the host surface is wet, which may be perceived as another stage and a faff.

However, it can ultimately save time and achieve better results.  It's also important to remember that bike washes are not degreasers, although in concentrate form, they can be very effective at stripping impacted oily gunk from cassettes, rings and similar metal surfaces. Squirt Bike Cleaner Concentrate SQUIRT BIKE CLEANER CONCENTRATE | cycling-not-racing and Weldtite Bike Cleaner Concentrate Weldtite Bike Cleaner Concentrate | cycling-not-racing being two that spring to mind.

One thing invariably prompts something else and, in this instance, replacing Ursula's cassette led to me discovering a sticky, well borderline seized TRP Spyre SLC calliper. I've not had any issues with Muffin’s, although Muffin is tarmac based, whereas Ursula does a fair bit of mileage off road, hence the calliper gets basted with more crap. 

I've not had too many issues per se, although I've heard the design is vulnerable to this and internal corrosion- piston and bearings. It is possible to strip the calliper, although TRP discourages this, so at your own risk.

Given the callipers are relatively cheap, not the end of the world. However, if I was going to buy a replacement, I'd nothing to lose by blasting the calliper through with a high strength solvent to purge anything gunky, followed by a GT85 GT85 ALL PURPOSE LUBRICANT "chaser". I’d been out for a ride, returned and took a different route.

Having removed the calliper, I gave it a liberal blast of Motoverde Drivetrain Cleaner Motoverde Drivetrain Cleaner | cycling-not-racing allowed that to marinate for a few minutes, pumping the mechanism to ensure full penetration. Engaging the calliper by hand accelerated this, a sludgy brown film seeping out as the mechanism freed. Rinsed with clean water, I dried thoroughly and applied Muc-Off MO94 Muc-Off MO94 Multi Use Spray | cycling-not-racing, taking particular care to avoid contaminating the pads.

This prompted a wholesale tear down. I needed to replace the brake cable, so took this as my cue to switch the bars and stem, repack the FSA aheadset with fresh Juice Lubes Bearing Juice Waterproof Grease The Juice Lubes Bearing Juice Long Term | cycling-not-racing  An orgy of fettling and script changes followed but sometimes the most time-effective decision is to strip and start again.  

I’ll close here with my review of the Gaciron XIAOMAN 1000 Multifunctional All-in-One Professional Outdoor Front light The Gaciron XIAOMAN-1000 | cycling-not-racing