The Overhaul

December 31, 2009 by  
Filed under Machine

One of the greatest adventures of my newly minted career as a bicycle mechanic was when I was walked through my first overhaul. One Saturday just before New Year’s Eve, after we closed the shop up, the manager and I stayed behind, cranked up The Who and he began disassembling his Nuovo Record-equipped Cïocc.

Off came the wheels, then each of the cables and housing. Then he removed the brakes, the derailleurs, the cranks, and then the stem, headset and fork. Finally he disassembled the bottom bracket. As he removed each of the parts they went in the Safety-Kleen bath. He flicked a switch and left them to marinate. He coiled the cables before tossing them in the trash and he folded the chain on an old rag.

He showed me how to position the crank-bolt wrench so that you squeeze the wrench and crank arm toward each other to remove the crank bolts. But when he took the Park crank puller off the wall, a tool I had previously seen, but never used, the bicycle became as complicated as a Chinese puzzle, but with an entirely more thrilling solution.

He demonstrated how to hold the drive-side crank arm and use a Park Y-Allen to loosen the crank bolts. One sudden, firm twist broke the bolts free. I quickly learned the chainrings were tough to scrub clean.

With the frame stripped of everything save the headset cups, he washed down the frame and cleaned around the chainstay bridge, around the seatstays at the seat binder, at the head tube/down tube joint and behind the front derailleur braze-on.

We scrubbed the brakes and derailleurs down and used a rat-tail file to remove enough brake shoe material to remove any aluminum embedded in the brake shoes. They were placed on a clean rag to dry.

The quick releases received their own bath and then the non-drive-side locknut and cone were removed from each wheel’s axle. The ball bearings for the headset, each hub and the bottom bracket were placed in glass bowls, one for each size of bearing. After making sure the bearings were clean, we inspected them for scoring or any other sign of wear. Next, he took a rag, dipped it in the Safety-Kleen and then wiped shiny each of the bearing races and cones.

It was painstaking work, work for which only clear forethought and practiced technique could add speed. Satisfaction was proportional to effort.

We reassembled the wheels first; truing would happen the next weekend when he planned to glue on a new set tires. One finger-scoop-worth of Campy’s white lithium grease was applied to each race and then each bearing was placed like so many cherries into whipped cream.

When we spun the freewheel back on he showed me how to use the freewheel tool to tighten the freewheel onto the hub threads so that the rear derailleur adjustment wouldn’t be thrown off by trying to adjust the set screws relative to a not-yet fully tightened freewheel. It was fun to put my full weight into turning the wheel on the vise.

With the frame spun upside-down in the work stand, we finished off the headset and then re-inserted the fork and spun on the headset’s adjustable cup.

We reattached the derailleurs and brakes, and made sure to remount the front derailleur exactly where the clamp had made indentations on the braze-on. New cables ran from each lever. We cut new housing to match the lengths of the old spans. We only needed 4 and 5mm Allen wrenches and an 8mm box wrench. A quick stretch of the cables and then we tightened them once again.

A week later I decided I would overhaul my touring bike. When I realized that the hubs and bottom bracket used sealed bearings (which were pretty exotic for those days), I felt cheated; the experience was less thorough than I’d anticipated. It’s a bit like traveling to Paris with the expectation that you’ll get to speak French, only to have everyone there look at your shoes and speak to you in English.

A few months later I purchased a used Super Record-equipped Miele. The first thing I did was overhaul the bike and replace the brinelled headset with a Chris King—kind of ironic given my previous experience, but my time in shops had taught me that no headset was longer-lasting and less likely to brinell than the King.

As the years passed, overhauling my bike between Christmas and New Year’s became a tradition for me, much like the annual company New Year’s Eve party is for some folks, only this was a good deal more contemplative and peaceful.

These days I’ve see the overhaul as a metaphor for many aspects of my cycling life. Every year I break out the tape measure and goniometer and go over my fit with the help of friend who does fittings for a local shop. We break it down beginning with an examination of my flexibility and ending with a thorough examination of me on my bikes.

Last year, I overhauled my workspace in the garage, tossing out old crap, filling a box with stuff to sell on Craigslist and sorting the stuff I planned to keep. It was a catharsis, and because the adventure was novel as my first shave, it was exhilarating as well.

This winter I’m in the process of overhauling my fitness. An injury last year followed by the birth of my son left me adrift of my usual mileage; I was as unacquainted with my usual fitness as the incarcerated are with take-out. Getting me in my jeans was as difficult as passing a rich man through the eye of a needle.

So this winter I overhauled my riding routines. I’ve sworn off the fastest group rides that are a normal part of my riding week. I’m riding on my own more, and I’m wearing a heart rate monitor—not for the hard efforts; rather, to remind me just how easy easy is these days. It’s kind of a will-governor, if you will.

I always derived immense satisfaction from running through the gears one last time while the bike was still in the stand, checking the throw on the brake levers and then removing the bike to pump up the tires before a quick inspection spin. I’m not sure what this personal overhaul will yield, and it will be hard to say just what finished is as our lives are unfinished until departure. Until then, I will stick to the process. I know the process results in satisfaction.

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Happy Holidays from RKP

December 25, 2009 by  
Filed under Mind

On behalf of everyone at RKP, we wish you and your family a wonderful holiday season. And if Santa left a Pinarello Dogma equipped with Super Record under your tree, then so much the better.

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Zipp VumaQuad Crankset

July 22, 2009 by  
Filed under Machine

IMG_0056

When I was initiated into proper roadiedom, I was taught that if you were serious about doing things the right way, the Euro way, then you did things a certain way. The quickest way to show others you knew what you were doing was to show up on a Campagnolo-equipped bike with a Cinelli bar, stem and seatpost. Your saddle was Italian and your tape was the same color as your decals or the accent color in the windows of your lugs.

That mindset, though it created some gorgeous bikes that served well for tens of thousands of miles, squashed some great ideas over the years. I’m reminded of a Pasadena company, Sweet Parts, that made cranks and stems from steel of surprising stiffness and low weight. Alas, in the mid-1990s it was hard to get a rider to break rank with those suites of parts used in the gruppo or other componentry. After all, if your bar, stem and seatpost were supposed to match, what did you pair an oddball stem to?

Times change, and so do bikes. And while sometimes too much emphasis is placed on weight, it is tough to argue that today’s bikes aren’t noticeably superior in almost every performance aspect: Lower weight makes them easier to accelerate and speeds climbing; increased frame stiffness improves power transmission and more sophisticated componentry has improved shifting, given us more gears and increased brake modulation.

The proliferation of aftermarket components—everything from bars to brakes—means that we’re more accustomed to seeing bikes with parts that may not match. Zipp helped lead the way into this fray some years back. In fact, carbon fiber has been the company’s bread and butter for close to 15 years. Fortunately, the 3k weave used in many carbon fiber parts makes them more similar than not, even if the decals don’t match.

Zipp’s latest crankset for road (as opposed to TT/Tri) use is the VumaQuad. It uses a four-arm spider (the crankarm is one of the four arms of the spider) and is available in two different chainring configurations, either 53/39t or 50/34t; interestingly, both configurations use a 110mm bolt-circle diameter, so you can change chainrings out depending on the conditions or your fitness. The crankset is available in four lengths: 170, 172.5, 175 or 180mm. The spindle is oversized and machined from aluminum to the new BB30 standard; it is integrated into the non-drive arm and secures to the drive-side arm with a self-extracting bolt. And because Zipp is predicated on making you faster, the bottom bracket is offered with ceramic bearings (as well as precision steel); the cups are available in either English or Italian threads. All this in a sub-600g package.

IMG_0062My review setup was 50/34 rings with 175mm arms and ceramic bearings. I tried the cranks first on a bike that previously had a set of carbon fiber cranks that had some detectable flex. I immediately noticed the increased stiffness as well as a weight reduction. The easier spin of the bearings was noticeable (if not hugely apparent) when I sat down and shifted to a small gear for a hill; I felt like I was turning out an extra 10 watts or so.

Next, I swapped the crank over to my preferred ride. This frame is stiffer at the bottom bracket and I was curious to see how much of an improvement I’d feel over the Super Record Ultra-Torque crankset (a review of the Super Record will be coming). The change I felt was comparable to my first ride on the Dura-Ace 7800 crankset—I was stunned by the seamless transmission of power. I had the sense that the bike itself was stiffer at the bottom bracket, even though I knew that wasn’t the case.

Ten years ago I had concerns about parts not matching on my bike. Five years ago I had concerns about the durability of carbon fiber cranks. Last year I started wondering if you could even tell whether your bike had ceramic bearings anywhere other than the wheels. The VumaQuad has super-hero-like powers to alleviate me of anxiety and improve my performance. Of course, all this performance will cost you; $1250 (with ceramic bearings) is a weekend getaway at a swanky resort, but there’s no question in my mind this crankset is superior to every crank I have tried from Campagnolo, Shimano, Specialized and FSA. Honestly though, for that kind of money, you shouldn’t be left wondering if it was worth it.

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