Showing posts with label Fixed. Show all posts
Showing posts with label Fixed. Show all posts

Saturday 22 June 2019

Trailer & Transmission Fettling










Well, I've made time to strip the TW Bents Yak homage trailer, ready for some modifying and makeover magic. Disassembly was remarkably straightforward. Once I 'd worked out how the press fitted bushing/bearings were instated. 

I prefer the single wheel designs, since they track with the bike's movement but all systems have their pros, and indeed cons. https://www.sevendaycyclist.com/tug-jobs 
It was a welcome surprise to discover they'd been treated to some plastic-friendly grease, which assisted their, undamaged extraction. Only modest amounts of controlled force and primal grunting ensued.

Formative discussions with Maldon Shot Blasting & Powder Coating erred toward a chrome effect swing arm, top rail and either a buttermilk (Interpon 610) or  gloss black base/frame. The chrome effect providing some reflective safety, the gloss black timeless, and easy to touch up, as required.  

However, I've since decided that chrome throughout, is the best option.
Keeps things uniform and is arguably the most efficient use of time and other resources.  

Chris was doing some more wet spray work, this time on what appears to be an old De Rosa, and this carbon fork, which will be matt blue, once the lacquer is applied. 

Seems  good quality. mass-produced (26 inch mtb) forks are now rarer than hen's teeth. Given my Univega's design brief, Carbon's a non-starter. A bespoke steel set, was another option. Disc and canti, mudguard and front rack mounts... 

However, while I'm a firm believer in paying skilled people appropriately, there had to be another option. Especially since I was only looking to save a few grams...Lo and behold!  
While rummaging through my spares stash, seeking inspiration, I rediscovered it's original pair. 

The original flamboyant red enamel was showing some cosmetic damage. 

Otherwise, not rot or other nastiness. Crown race liberated, Graham has kindly agreed to blast and refinish them, in gloss black powder coat. Note to self. Mus remind them to soak in methyl chloride tank, as they've been Waxoyled.  Be interesting to see, if  these also sport a nickel plated layer beneath the paint... https://www.sevendaycyclist.com/after-the-gritters-went-home 

Too much Mad Max, at an impressionable age, perhaps but  I have a quiet appreciation of matt black, and indeed other, slightly distressed effects. Nonetheless, gloss and satins rule my roost. 

A curious rattle, experienced when traversing washboard tarmac suggested my fixed gear winter/trainer's chain needed tensioning again. Closer inspection revealed it was the Halo Fix G Track hub's https://www.sevendaycyclist.com/halo-fixed cassette style lockring. I was surprised by just how loose it was. Note to self! Check more frequently! 

Wheel out, tool in, 40nm torque-sorted. Presented the ideal opportunity to instate the threaded side's cover, along with a light lick of grease. Keeps things looking sleek, and sheltered from grot. I also decided to swap to a Sram chain, since I was about it. 

Nothing wrong with the Passport Elements Single Speed Chain https://www.sevendaycyclist.com/passport-elements-single-speed-chai  whatsoever. However, my long term experience suggests it's best for single-speed and hub geared, rather than fixed builds forgoing a rear brake. Especially, if you live/ride in hillier regions.  For many, simplicity is fixed's main draw. 

However, its important to remember the stresses placed upon a fixed setup, doesn't permit sloppy maintenance. For me cheap chain, hubs and sprockets are false economy. I'd still be inclined towards a 1/8th chain- even on 3/32 sprockets.

Despite the persistent, showery conditions I'm still running the Zefal Pro-Dry Chain Lube. Love the low friction, serene swoosh and indeed, its penetrant qualities. It literally seeps into the chain's inner sanctum, which made removing the joining pins, a breeze. 

Not quite so clean-at least compared with long cure, barely there ceramics, including Weldtite TF2 Ultra Dry Chain Wax https://www.sevendaycyclist.com/weldtite-tf2-ultra-dry-chain-wax ; or indeed Rock n' Roll Absolute Dry Chain Lube https://www.sevendaycyclist.com/rock-n-roll-absolute-dry-chain-lubr 

The SRAM does seem a bit meatier, although I'll keep the Passport. According to my digital gauge, it's only a quarter worn, and could still come in handy... Muc-Off sent us some interesting samples of their lubes and polishes, this week. Well, keeps me out of mischief.... 
  

Saturday 5 January 2013

Carbon, D cups & Similar Fetishes









A wonderful Christmas spent with friends and family was rudely interrupted by Beelzebub; a particularly spiteful cold virus that killed my appetite, induced fever, headache and the sort of hacking cough/mucus production that would impress chain smoking shipyard weldors.  

Stoicism is one of the few stereotypically British traits in my possession, hence I ploughed ahead with January’s workload while finding time to strip and re-grease the Ilpompino’s FSA Orbit Aheadset. These are nice examples of the cheap but cheerful breed boasting simple, yet effective O ring seal and caged ball bearings, explaining their popularity as OEM equipe’ on mid range mountain bikes of similar vintage.

Quiet contemplation often invites wholesale upgrades between holiday season and January’s pedestrian unveiling, so chances are, it comes as little surprise to learn that I've been obsessively measuring steerer tubes and cutting these ITM Visa down to size. Well and truly gripped by cold and carbon demons, I wanted to avoid headset replacement having established said components were in remarkably rude health.

Generous bastings of this lithium derived Motorex grease greatly improved souplesse so we needed a compatible crown race and bearings, allowing effortless swaps between composite and Cro-moly should need arise. White brews have received very bad press in recent years resultant from their links with galvanic corrosion (chemical reaction leading metals of different parentage to seize solid.

Fluted alloy posts and steel framesets being notorious examples of this process). However, these are static, bearings are perpetually turning. Surfing unearthed Dia Compe’s suggestively monikered D cup. Essentially it’s a CNC machined lower ensemble with simple caged ball bearings, supposedly interchangeable with a wealth of other marques…

Vital statistics were dead ringers for the elderly FSA’s so I wasted no time in ordering one. Next day delivery saw a friendly local mechanic install crown race and star fangled nut, although an interference free, buttery smooth fairytale ending necessitated pruning the Visa’s alloy steerer by eight millimetres. Non-existent weather seals are easily overcome with some decent marine grease and scrap inner tube engineering.

Cut a two-inch strip of redundant butyl and draw this past the bottom cup. Lubricate bearing/surfaces generously before re-coupling the front end and adjusting textbook stylee. Ensure makeshift seal is carefully positioned so as to prevent road/trail spray being funnelled inside and so long as jet washing is avoided things should remain happy for considerably longer. 

Next in line were Joshua’s slightly arthritic steerer bearings, which hadn’t seen a mechanic since Noah was hastily constructing his ark. An hour, lashings of lube, some agricultural utterances and a brand spanking new Jagwire cableset later, everything looks and behaves in great proportion.

New Year stocktaking saw patch kits and CO2 cartridges replenished, crammed inside a 750ml tool tub along with pocket workshop and resin tyre levers. Essentially trade bottles with broader mouths and screw top lids, these also make superb battery caddies for home brewed high power lighting systems but I’d recommend lining with thin pile foam in both contexts to prevent irksome jingling over inclement surfaces.

Right then, another batch of lovely blinkies has arrived on my doorstep, so I’m off to put them through their paces and some serious miles on the newly reconfigured fixer. Here’s to a productive and puncture free 2013.