Wednesday, 3 March 2021

Cranksets & Calculations











The Deore Crankset arrived and with a 32tooth front ring and 12-28 cassette, gives a range between 29.4 and 69.44 inches. A little low at the upper end for tarmac terrorism and catching riders, but plenty of torque for trailer towing and gravel stuff.  


Ideally, I’d be looking towards something in the high 70s. Will stick with it for now, unless a suitable, closer spaced option presents. 11-25 would give 33.0-74.9, which is arguably a better option. I took this opportunity to replace the chain and deep clean the drivetrain, since the existing KMC had done 1,000 plus. Besides there’s no sense in prematurely wearing cassette and new ring. I also noted that, despite the nickel finish and being fed wet lubes, it had become quite stiff and showed the ominous orange taint.   


Wintry conditions largely gone and while waiting for the new crankset, I whipped the Univega’s wheels out, given the frameset a more thorough waxing of its intimate areas and switched to the Schwalbe Billy Bonkers.

  

This also presented the ideal opportunity to give banish the congealed gloop, clinging to the cassette and Sun Race derailleur’s jockey wheels, using this Squirt Bike Cleaner Concentrate. Thankfully, the oily residue had done a good job of preserving the finish, so no call for the M16 Ride & shine M16 RIDE & SHINE | cycling-not-racing (sevendaycyclist.com) 


I’ve been getting the miles in on the fixed. Switching the Schwalbe Marathon Plus for the 42mm Continental Contact was a sensible move and I ordered replacement ceramic pads for its TRP Spyre stopper, so they’re in stock, when replacement’s next due.  


The Zefal Z11 bag is proving a very useful addition. Minimal sway (which is unusual for the bigger models, especially those tethering to the post via a single strap). The larger breed also doubles as a decent mudguard, protecting saddles and buttocks from cold, wet, slimy stuff.  


On the theme of transmissions, I’d returned from a ride, intending to simply tweak the chain tension, when I discovered some issues with the Fix-G HALO FIX G TRACK HUB | Seven Day Cyclist Tourin Tests Commuting side of the hub. Horsef*ckers! No matter, I switched back to the Aerorage wheel, until I’ve time to assess things properly.  


Oh well, might as well, give the transmission a good blitz, then feed it Squirt Low-Temperature Wax Chain Lube. Talking of the concentrate, this can be applied neat, as a degreaser, or diluted to make a bike wash.  


I’ve decanted neat into a chain cleaner receptacle, a 30/70 concentrate/water mix as a winter weight/early season bike wash. Like many concentrates, it can be applied to (a) the drivetrain via brush/chain bath, left for a few minutes, then agitated and rinsed. Or (b) poured over parts and left marinating for a few hours/overnight. This version pours easily in cold weather-noticeably so, compared with its otherwise impressive standard counterpart. SQUIRT LONG LASTING DRY CHAIN LUBE | cycling-not-racing (sevendaycyclist.com)  


Wax formulas aren’t the obvious choice for cold, wintry conditions. Indeed, I would reserve most for spring/summer. However, this low-temperature blend stoked my curiosity. Similarly, while wet lubes are the obvious default for wet/wintry conditions, they can also attract a fair bit of gunk.  


Purging this regularly (as you should) can be a tedious chore. Ignore it and there’s a very real risk of it grinding through expensive rings, cassettes, derailleur jockey wheels (and even cages). Waxy types require longer curing times but will simply scab off when leaden with contaminants. 


No need to scrub, or clean, just apply another layer and leave to cure.   

As the photos illustrate, I’ve gone this route with Ursula’s new chain, since I was there.  Also switched back to the Ravemen CLO6 Sensored Rear Light.RAVEMEN CL06 SENSORED REAR LIGHT | cycling-not-racing (sevendaycyclist.com) Fancied a formative “shakedown” blast to see how the new drivetrain components behaved and its CLO5 counterpart needed a charge.  

 

Wednesday, 24 February 2021

Hollow Thoughts










 250 miles in, I’m arriving at the conclusion my shim experiment wasn’t the success I’d initially thought. However, I’m glad I went this experimental route. It didn’t cost me anything, since I already had the components and wanted to see how much difference a Hollowtech system would make to my Univega’s drivetrain.  

My fixed gear winter/trainer ran a Truvativ external cup system for a while and I’ve tested machines with external cup groupsets. There’s a big difference between living with a system for a few hundred miles and a machine that you ride year-round and have exceeded 100,000 on. 


Anyhow, I’ve decided to stick with Hollowtech and acquired a Deore unit, which aside from being the right fit, and will save some weight. Afterall, Zee is designed for downhill duties, so overbuilt for a mixed terrain, rough stuff tourer cum daily driver. 

 

Replacement crankset in question comes with 32 tooth, 96BCD ring, which gives rise to reviewing gearing. Might need to switch the cassette to something more closely spaced to compensate and avoid warp speed spin-out on the road/unevenly wearing certain sprockets.    


For the time being, I’m getting the miles in on the fixed, which is no hardship, especially since I dialed in the chain line. The Acros Silicone Wrap Handlebar Tape LONG-TERM TEST: ACROS SILICONE BAR WRAP | cycling-not-racing (sevendaycyclist.com)    

Is still going very strong but looking a little grubby, so the arrival of this T-One Mr Fantastic Handlebar Tape, sent to me by Greyville Enterprises Greyville.com - T-ONE Mr Fantastic Handlebar Tape: Orange is also 100% silicone and promises to be extremely durable. 


For example, UV resistance is reckoned between –40 and +260 degrees. Uncut, it carries a 24g weight penalty over the Acros and over double that of Genetic Flare Silicone Bar Wrap GENETIC FLARE SILICONE BAR TAPE (sevendaycyclist.com) 


Being a naturally grippy fabric, silicone tapes require no adhesive backing, so bar swaps, cable changes etc don’t spell the tape’s end and make the other tasks that little bit quicker/easier. Talking of which, it’s quite relaxing to fit, requiring nominal pressure-closer to the Genetic Flare, in this respect.    


Oh, and lighter colours, such as fluros keep their looks longer since you can pop it on the washing machine at 30 degrees. Talking of which, it will be interesting to see whether the smooth texture means it stays cleaner/is easier to clean, compared with the Acros’s embossed finish.  


Formative impressions are favourable- the aesthetic is less chunky than the Acros but still does a capable job of damping low level vibration. I’d also toyed with porting the K-Lite Bike Packer Ultra over to the Genetic Neuron Accessory Bar GENETIC NEURON ACCESSORY BAR | cycling-not-racing (sevendaycyclist.com) but ultimately thought better of it. 


More pressing was a sudden loss of braking-pads again. Thankfully, I had replacements in stock but it’s amazing how quickly these get consumed in bad weather. This also presented an opportune moment to switch from the Schwalbe Winter Plus to this Continental Contact plus TESTED: CONTINENTAL CONTACT PLUS TYRES (sevendaycyclist.com)  


Back to the drivetrains...Well, I’ve reached my conclusions regarding the Muc-Off e-Bike Wet Weather Ceramic Chain lube MUC-OFF E-BIKE WET WEATHER CERAMIC LUBE | cycling-not-racing (sevendaycyclist.com) and Weldtite Ceramic Chain Lube is also making a generally positive impression. In terms of consistency and friction, it’s quite close in characteristics and staying prowess to Juice Lubes Ceramic Chain Juice JUICE LUBES CERAMIC JUICE | cycling-not-racing (sevendaycyclist.com) 


I’ve noticed a tendency for it to migrate away from the rollers in very wet conditions, although residual stuff seems to get reclaimed from the cassette. In fairness, The Juice and Weldtite Ceramics are designed for fair, rather than foul weather but it’s interesting to see how they behave in wetter conditions.  


Given the forecast these coming weeks, I may be reaching for the Muc-Off –50 MUC-OFF -50C CHAIN LUBE | cycling-not-racing (sevendaycyclist.com)  again. For the time being, I’m enjoying the lower friction, which is particularly apparent, riding fixed. Steve’s also been impressed by this Rohloff blend ROHLOFF SPECIAL BIKE CHAIN LUBRICANT | cycling-not-racing (sevendaycyclist.com)