Bubbling Beneath The Surface...

The past ten days have been a roller-coaster ride of highs n’ lows; my illustrator, Michael J Murphy has brought the main characters in my series of children’s stories alive as Jpegs. 

Given digital media dominates and portable devices have become the viewing tools of choice; we’re considering releasing a narrated version for younger children.

In keeping with our everyday focus at Seven Day Cyclist (www.sevendaycyclist.com    https://www.facebook.com/Sevendaycyclistmagazine/?ref=aymt_homepage_panel ), we’re awaiting delivery of an interesting trailer or two.

Some of the team are leaving their wives behind and heading off for a quick gander at the Czech Republic...

My strange and some would say; irrational love of crumbling Soviet military/industrial sites, coupled with an uncanny ability to get arrested, detained and interrogated by the authorities means I’ll be testing kit on domestic soil through June…

A recent dry spell enabled me to slather some of my home brewed waxy preserve over the KA’s chassis and underside. 

Build quality seems an improvement over its predecessors, suggesting there’s some truth in the long held belief that last-of-the line cars were the ones to go for, since all the faults had been ironed out. That said; rust behind the filler cap remains as problematic as ever.

Moisture gets trapped between the rubberised seal and bodywork. A distinct lack of galvanising means the elements nibble away unsupervised until the bubbling becomes apparent. Thankfully, remedial action wasn’t too intensive. 

Having removed any flaking paint, I sanded the affected area; then added two light coats of Krust; a water-based neutralising agent before turning my attentions to my two-wheeled fleet while it cured.

Some minor play had crept back into the Holdsworth’s headset bearings, swiftly cured by a quick bit of spacer shuffling and introducing a 2mm “carbon” unit beneath the stem cap. 

Forty miles hence, suggests this unexpected flash of inspiration has solved the problem. 

WD40 water displacer is one of those truly iconic products; look in any household cupboard, garage, bike shop and chances are, you’ll find the blue aerosol (or 5 litre solution) sitting on a shelf/workbench.It’s not particularly kind to seals and other rubberised parts but inhibits corrosion, prevents squeaks, lubricates cables, pivot points, mechanisms etc. 

GT85 is another justly popular, Teflon fortified maintenance spray, which keeps these areas slicker for longer. It’s also owned by WD40 and they’ve also launched a bike specific GT85 range including bike wash, dry lube, degreaser and silicone polish.

While my preference (and that of many bicycle/motorcycle dealerships) errs towards high quality beeswax furniture polishes; dirt cheap, they achieve high quality, lasting sheens on painted, plated and polished surfaces with minimal effort. Silicone products also nourish plastics and rubberised components-suspension elastomers, seals being obvious candidates.

Traditionally, silicone based polishes-bike specific, or otherwise have tended to quickly cultivate grimy patinas. Credit where it’s due, while this formula still seduces some filmy grime, it is easily dismissed (almost as quickly as these U-locks) given a quick, soft-cloth onceover, though the lion’s share of protectant remains. Looking forward to putting the rest of their range through its paces...

John Moss is another perpetual fettler, perhaps unsurprising given his engineering career. In common with coach-builders and other engineering grade trades I’ve encountered in the past, he’s been trained to discover weaknesses and improve designs accordingly. His Mango being a prime example; Alfine 11sped hub, much bigger ring instated, gearing now permits 35mph at modest cadences and theoretically in excess of 80mph on a long descent!

Richard Ballantine once suggested that having motorcycle experience can be very beneficial when pushing recumbents hard-I was somewhat smitten with his “Speedy” during this period and would certainly indulge today...Along with some kind of 850cc trike project if other priorities and space permitted.

John affirmed that his ten years spent riding large capacity motorcycles develops an intuitive understanding of exactly when to push and of course, to back off.  He’s also learning to work with glass fibre and appears to have commandeered the couple’s trailer for solo shopping runs and other errands. The hitch is presently undergoing refinement so it tracks more accurately behind the Mango...   

Back to the KA

Next came three light coats of red oxide primer. Ideally a colour coat would’ve been applied but in my experience, these will keep the region solid and grot free. Before reinstating the filler cap assembly, introduce some decent quality, rubber friendly grease to the seal. It won’t cure the problem but greatly inhibits further bouts of grot and therefore, more intensive exorcism.

If you’ve bought a late model MK1 with no signs of corrosion in this region, I’d recommend a similar strip-out before filler and more serious intervention’s needed...

A Slippery Scapin's Starry Makeover

Increasingly superseded by stainless, chrome has long been synonymous with Italian manufacturers, despite Columbus recommending their tubesets were not subjected to acid baths, filing and similar torture...

Scapin are an Italian marque, renown for coating their steel frames internally with phosphate and nickel plating the exterior tubes. Allegedly, this was also for corrosion resistance, though I remain convinced aesthetics were the biggest pull. This particular example came under my radar, while I was mooching around Maldon Shot Blasting & Powder Coating’s bat-cave.

Closer inspection suggests it was fashioned from Columbus’ thin wall Nemo or Genius tubing. I strongly suspect it was originally part-painted like this Rossin but chemically stripped once the livery had begun losing its tenure and/or succumbing to stone chips and other cosmetic damage.   

Persuading stove enamel and 2pac finishes to stay put on partially/ plated framesets has presented headaches a plenty for paint-shops. Acid etch primers ruled by default but given a few years’, the livery tends to flake and peel where the two overlap.

This customer has chosen to leave the rear triangle in its original polished state. Aesthetics aside, this means chain slap and hasty wheel removals won’t leave unsightly calling cards. Graham carefully mummifies these with masking tape to rule out any pitting from blast media.

Having passed the threaded uni-crown forks through the iron oxide cabinet, Graham decides to sand the main triangle. He fears even a gentle grit could lift the nickel in places, which is not something that can be disguised with additional paint. 

Instead, he opts for an epoxy based zinc primer. Epoxy offers superior adhesion and interestingly, resists chemical attack better than others. However, they aren’t UV stable; hence polyester powder is the good finisher’s choice for colour coats.

After meticulous plugging and masking of head, seat tube and threaded areas, the frameset disappears beneath a powdery grey mist. Seven minutes and some perfectionist re-touching later, its spirited off for a ten minute bake in their gas oven.

Monitoring progress around the seven minute mark, the powder has melted to a rich (and strangely attractive) grey skin. Next; Graham applies a gloss black, a common “colour” that including lacquer brings the price to £65 plus VAT. However, this is only the base for a very exotic commission.

Four minutes and some localised re-touching later, its back to the curing oven for another ten minute bake; I alter the camera settings slightly and sip some tea, while Graham heaves a huge box of powder across the workshop dung beetle fashion. “Sapphire Star clear coat” he shouts over. 

I’m told this acrylic is impregnated with tiny pigments of colour. The overall effect is timeless petrol blue under normal lighting but assumes a subtle sparkle on sunny days. It’s well known that colours have slightly unique characteristics, requiring different techniques but Graham explains; particular care is needed with this kind of specialist clear coats-including temperature. 

The Scapin must not be allowed to cool, otherwise crazing or clouding is on the cards-disastrous. Gun loaded with lacquer, he strides purposefully over to the oven, caresses the frame tubes, nods with a grin and retrieves the frameset.  

Powder lacquers always appear white, enabling the sprayer to see exactly where they’ve been. Anything other than exacting coverage here will ruin the effect but like any skilled trade, he makes this look effortless-done in five minutes. 

Back to the oven for another ten minutes, we’ve time to indulge in a biscuit; or three. Graham removes the masking tape while the adhesive is still soft and I get a final shot.  

Total cost is £162 including VAT.      

 

    

Punjabi weddings & Performance Enhancement

Found myself up in Bedford, shooting a Sikh wedding ceremony last weekend and returned to a nice big box of test kit. This included these Issi 2 triple pedals, bike specific degreasers and polishing products.

Monday was one of those stereotypically manic ones characterised by a liberal helping of faff n’ frustration; so I wasted no time performing pedal swaps, adding a few psi to the Holdsworth’s tyres and giving its Aheadset bearings a quick tweak.

Twenty miles of rural roads, carpeted in slimy bovine dung saw man and machine sporting a distinctly grimy patina but mentally rejuvenated by that sense of escape. Rolling to a halt outside the house, said head space was rudely interrupted by a gentle hiss...

Closer inspection revealed a sharp flint, burrowed deep within the Specialized’s casing but I was thankful it struck home then, not ten miles back along a dark, greasy lane.

More pressing duties called that evening, so Tuesday afternoon was set aside for some serious fettling, presenting an ideal opportunity to test those degreasers and polishes. Having whipped out the rear wheel and removed the injured Specialized, I filled the split with superglue and hung it in the workshop to cure thoroughly.

Next, a taller ratio, courtesy of this 15tooth Halo, followed by the 145psi Vee Rubber Rain Runner and a goo-filled tube for some additional security, if only psychological.

So then, these Issi 2 pedals...

Available in no less than eight colours, the fetching blue was an obvious compliment to the Holdsworth and indeed, my one-cog ‘cross inspired winter/trainer. There are two versions; this one boasts aluminium alloy bodies, cro-moly axles and buttery smooth cartridge bearings.

Now, those axles and the raised, SPD compatible cleat mechanisms are in fact, black chrome, a decorative process designed to offer better protection to surfaces than traditional electroplating. Glossy variants such as these easily pass for anodising.

Though apparently aimed at the burgeoning gravel audience, double sided pedals are particularly suited to road biased fixed builds-no correct side, simply step in and power away.  Issi have listened to criticism and improved the cleat mechanism, both in terms of release angle and compatibility with SPD/patterns.

Formative impressions suggest the broader bodies provide greater support than said machine’s usual, venerable Wellgo SPDR units, theoretically improving comfort over longer distances. Miles will confirm whether this is simply “new contact point syndrome” or genuinely so.

Disappointingly, the bodies are already showing signs of cosmetic wear, not something I would expect in several hundred miles from bog standard sub £20 fare. Mine may be a rogue sample, this could be as tatty as they get. Several weeks’ in different conditions will tell.       

Hadn’t seen John Moss in a while, seems he’s been doing some very involved revisions of his mango Velomobile. This now sports the couple’s tandem trikes’ tow bar for the weekly shop and running other domestic errands. While perfectly acceptable around town; existing gearing isn’t tall enough for that legendary recumbent rush on longer rides.

Its existing sun star crankset also seems rather fond of throwing the chain and being a double; even with a 70 tooth ring, 25-30mph is pretty much tops. However, he says the Rohloff hub is a more limiting factor, so is developing his own system reminiscent of 

overdrive, manual transmissions common in cars before 5^th gear became the norm.

This involves driving an 11 speed Shimano Alfine from the Rohloff and mounting a flip-flop hub beside the alfine. Being from an engineering background, he’s planning to fabricate a glass fibre cover to house the system and calculates with the correct ratios 40-50mph should be realistic cruising speed.

That’s it for now, off to check out my illustrator’s latest work, pop those magnesium BBB on the Teenage dream for a shoes test and have a play with this Topeak mini usb combo.

Oldie but Goodie: Fuquay Transformed

Remember the battle scarred red frame I got so excited about during my last visit to Maldon Shot Blasting & Powder Coating? (http://www.ctc-powder-coating.co.uk/) Well, as I suspected, it was a genuine Greg Fuquay.

Fuquay was an American builder, trained by Serotta cycles, who spent much of the 1990s crafting some very unique road and mtb framesets, before returning to Alabama and his earlier aerospace career. This one features his trademark combination of TIG welded and brazed construction.

Sure, most TIG welded steel framesets, especially production bikes have brazed bottle bosses, cable guides, mudguard eyelets and carrier mounts. Few combine the two structurally.

Speaking of which, the tatty aesthetic was apparently down to extended indoor trainer slavery-hence, sweat induced corrosion/pitting along the top and seat tubes. The dent damaged seat stay was filled with brass and smoothed flat for a modest £18, before passing through the iron-oxide blast cabinet.

Structurally sound, there was little trace of internal corrosion, so threaded areas masked and on with the phosphate base coat. While this baked in their curing oven, Graham heaved a huge box of chrome effect powder across the workshop and fed this into the gun. Several minutes later, the frame emerged ready to receive said electroplate effect.

Graham weaves around the tubes, shrouded in a silvery mist. Within five minutes, he’s done, given a quick visual twice-over with extra powder added around the bottom bracket shell. Then it’s returned to the oven for another round of curing prior to receiving a protective clear coat.

While generally an advocate of protective lacquers, in this instance it tempers the sheen, giving a nickel effect under normal light.  

However, when properly applied, polyester powder coating will trump wet spray finishes like stove enamels and 2pac in the durability stakes. Therefore, clear coat is very much optional. Total cost for his transformation came in at £116.40 including VAT.

As for the the Rosso Red Oscar Simonato Columbus frame; it re-emerged in this extremely fetching metallic blue. Another specialist finish, which brought the price to £110 including VAT-£45 over a standard gloss blue such as my Holdsworth’s-RAL 5024 (assuming no post blast remedial works are necessary).

Right, that’s enough distraction for me. Time I was back at my desk, penning some more adventures for the characters in my series of children’s stories.  

Toupes, Tweaks & Tug Jobs

Further plotlines and characters for my series of children’s stories devised and deadlines herded into their respective pens, Border collie fashion, I settled to slathering some fresh Muc-off Carbo-grip to the Holdsworth's Tifosi branded composite post. 

While about it, the Specialized toupe' was reinstated on grounds of grams and the coarse grain leather saddlebag substituted for this Zefal. Aside from superior capacity and zero sway,it includes retro-reflective detailing and LED tab. I had hoped this Cycliq fly 6 HD camera  and LED combo would cadge a lift but its specifically designed for post mounting. No bad thing, since the latter provides superior tenure and blur-free recording.

Polishing and preening complete, attention turned to its track nuts, which needed nipping tight. Obviously, I don't generate    the herculean output of a 90 kilo sprinter. That said; proves transmission braking and hard core honking call  for regular inspection.

Contrary to popular misconception, fixed chains wear faster than their derailleur counterparts. Sure; they’re no skipping up and down a cassette but those forces, coupled with grotty winters (and in my case, occasional trailer tugging duties) lead to hard and relatively short lives.

I’ve managed 3,000miles from this Z1X inox which is roughly twice that of a typical nickel plated speed derailleur chain subjected to similar conditions. Now well into late middle age, I’m probably looking at a further 700miles before it becomes bin fodder. Chances are, we’ll receive another beefy model for review by then; otherwise, I’ll go for another X1.  (Full report on Seven Day Cyclist www.sevendaycyclist.com).

On the subject of trailers, leaving the house without a camera is unthinkable-there’s always something interesting to capture. I overtook this rider on a bypass road while driving the KA and pulled into a layby several hundred metres away to get some shots of his Specialized and Burly combo.

Bikes are incredibly versatile and can haul surprising loads safely, at sensible speeds and for long distances.

Admittedly; the safe bit is clearly open to interpretation, depending on where you are in the world and I’m not sure, even with gearing lower than a snake’s testicles, that I’d attempt hauling Peter Eland’s payload www.eland.org.uk/

Nonetheless, a week’s family shop is easily brought home in a typical mid-range unit. In keeping with panniers, a low slung hitch and sensible weight distribution  are musts but so long as 35kilos isn’t exceeded, I can haul more in my Bob Yak homage than the KA and other micro-minis.  

Single wheel designs, such as the Yak and its followers track behind the bike and enjoy a low centre of gravity, which makes them a more obvious choice off road. 

Sneaking through tighter gaps and side alleys is also easier than their two wheeled counterparts. On the flip side, two wheelers tend to cope better with potholes and make stop-start parking more convenient. Hitches are similarly crucial, look for something low slung that bolts neatly to the rear dropout.

Chariot trailers used to employ a clever ball-joint coupling that was secure, yet counter intuitive to use. Avoid post mounted types crude, or otherwise since they’re agricultural and cursed with a high centre of gravity, which have a detrimental effect upon handling. Substantial twisting forces generated by the beam “wag” the rider, which is tiring to counteract and overcome, even over moderate distances.                  

Elsewhere, Green oil's workshop sized, gun-friendly 200ml tube has just arrived. This makes for very precise, mess and waste-free delivery ; especially to quick release skewers, small fasteners, bearings etc. Other than an initial squeeze, contents flow much faster than the original dropper-bottle, which often needs standing in hot water for a minute or so, particularly in cooler weather.                              

Initial reactions are favourable and it seems much stockier than the original recipe, which though good, degraded faster than PTFE or lithium pastes. Unlike these, it’s reckoned safe on rubberised components such as seals and suspension bushings. We’ll see…Off to watch some old frames restored now.