The Rivendell ReadeR 43 43 Spring 2011 Spring 2011 Published sporadically by Rivendell Bicycle Works ever since 1994 The MauRy WillS BaSeBall CaRd MySTeRy If you were to weigh a motorcycle, car, air - 17.5 lbs. On a more useful bike the parts With that engine, the racing bike now plane, or motorboat, you’d weigh it with the weigh about 16.5 pounds. Add the 6.5-pound weighs 167.5 pounds, and the normal bike, engine, but people weigh bikes without en - frame and fork, and the subtotal is 23 173 pounds—a difference of now of 5.5 gines all the time. That’s the normal way to pounds. My bike has heavier stuff on it, and pounds or 3.2 percent. (The heavier the en - do it. In fact, the engine weighs the bike. is even more useful, but 16.5 pounds of parts gine, the smaller the percent difference.) A superlight modern racing frame and Look what that 5.5 pounds and 3.2 percent gets you lots of utility. fork may weigh 3.7 pounds. You can get buys you. The five-and-a-half pound difference be - lighter, but that’s still superlight. A more The light bike has a carbon frame and fork tween 23 pounds and 17.5 pounds sounds like useful, durable steel frame and fork may that you’ll ride maybe four or five years be - weigh 6.5 pounds. That’s 43 percent (2.8 a ton, but it’s just 14 percent, and neither fore either it breaks or you just don’t trust it lbs) more. bike has the engine yet, so it can’t even anymore. The normal bike has a steel frame You need parts for the frame, though. The move. Let’s say the engine weighs 150 and fork and may easily last 20 or 30 years, parts on the racing frame typically weight pounds. That’s a light engine, but let’s go at 6,000 to 10,000 miles a year, barring bad about 13.8 pounds, bringing the subtotal to with it, anyway. luck or foolishness. ...continued on page 2 RR 43 The Rivendell ReadeR # 43 SpRing 2011 The light bike won't let you ride a tire where all riders are even halfway matched bigger than 25mm, so it’s lousy on rough in fitness, it is easy for anybody to ride in ThiS iSSue roads, unsafe on trails, and not nearly as pack speed, because the pack provides a cushy even on smooth roads. The normal near vacuum, you aren’t fighting the wind bike lets you ride tires up to 38mm wide, nearly as much, and presumably, you aren’t 1. Editorial minimum, so you can ride it over any all trying to drop one another. Theoretical 3. Letters paved surface with remarkable comfort speed on paper, figured out by scientists is 4. Our Bikes (because you can lower the pressure in the one thing, but actual speed of a rider on a wide tires). 5. Saddles, dings bike anywhere in the world is a mushy, The normal bike is good in wet weather fuzzy, gray area. 6. Seatposts and Setback too because it’ll fit fenders. The light bike Whatever the speed to be gained, and 7. Stem Heights can’t. The light bike has high gearing, which however important or unimportant it is, it 8. Frame Arithmetic is no good for trails, long hills, steep hills, or makes no sense to cut the frame-fork-parts 10. design Madness even moderate hills when you’re tired. The weight and compromise the bike. The normal bike has go-anywhere gears. 12. Q/R & dropouts smart weight cuts are in the fat of the en - The light bike requires special shoes; the gine, but they’re not the ones people attack. 14. Frame Material Basics normal bike works with any shoes. There are other weight considerations 15. O-L-d All of the weight savings—in the frame, on a bike, anyway. 16. Third World Bikes fork, and parts—come at the cost of use - Sitting on something versus lifting it; leg 17. Headsets fulness. You end up with a bike that is prac - strength versus arm strength; friction ver - tically limited to smooth, dry, flattish 18. Helmets sus wheels, and the detectability of 3.2 percent. roads; cannot carry a 12-ounce tube of You can sit on a park bench alongside 19. Idaho Stop blueberries, and has such a short lifespan other people, but you couldn’t get off and that it’s cost-to-ride per mile ends up being 20. Riding in Traffic lift it. If you have to lift something, it’s eas - — well, it all depends on how you figure 21. Solo Shopping ier to use your legs than your arms. If you the cost. Twenty-five cents, for some; a have to move furniture, it’s easier if the 22. $100 Bike Tour dollar for others. Plus the risk of sudden furniture is on wheels. When you ride a 23. Know Your Guts failure, which if it happens, is more expen - bike you’re combining all of those advan - 24. Crossword sive than the money part. tages, and when you do that, a 3.2 percent How about speed? 25. Fender Extenders weight difference (with a 150-lb engine) 26. BikeSnobnYC In the ‘70s The Schwinn Bicycle Com - pany hired the Cornell Aeronautical Lab - can’t be easy to detect. People don’t think 32. Shock Absorbers, Quiz oratory to figure out how weight translated of it that way, though. They hear “five 33. Gears & Shifting to speed. It concluded that for every 12 lbs. pounds heavier” and imagine the differ - 34. Riding, Weight gained or lost, there was a 1 mph difference ence of lifting nothing versus lifting a five pound sack of fruit with their arms, and 35. Fitness Isn't Health in speed. In the real world there are count - less real-world factors that have a far more then doing that thousands of times. As 36. Forks dramatic effect on speed than bike weight. Tracy Morgan says better than anybody 37. Fat, Underwear For example, on a stop-and-go commute, else, that’s crazy. 38. Charity Rides a red or green light wipes out 100-pound Every ounce on your bike should earn its 39. Slingshots differences instantly. All else equal on a de - keep by making the bike safer, more use - ful, more comfortable, more fun, less ex - 42. Lugs scent, the heavier bike-rider wins (but would you really rather sail down a hill at pensive, or even prettier. But not all 44. Childhood Riding 43mph than at 39mph?) Light wheels ac - bike-pounds are the same. A superlight 45. Mysterious Forces celerate faster than heavy ones, which bike that you can’t ride in the rain or on helps when you’re taking off from a stop, rough roads, or that’s prone to flats and but heavy wheels maintain more of their won’t let you carry anything is like the momentum than light wheels, which helps anorexic model who always needs help you keep you speed on rolling courses. On with her groceries. It’s skinny-fat and im - a 25-mile club ride, a flat tire wipes out any pressive (or whatever) until you need to use advantage that may have accrued from rid - it, as opposed to just ride it. ing superlight tires. On club rides in packs, -Grant 2 RIvEndELL REAdER #43 RR 43 leTTeRS I own a small business specializing in tails. The overall weight is within a few high quality remote controlled model hel - ounces, and I defy anyone but the most icopters. They’re injection molded of expert pilot to tell the difference. I've fiber-reinforced engineering-polymer been flying models for more than 35 years (plastic), which are tough, fly well, and and I’m not sure I can. easy to repair. Yet manufacturers rave on about car - The polymer I use is tough and durable, bon fiber as if it’s the secret to flying suc - absorbs vibration and withstands shocks, cess and enjoyment, so new flyers almost and is safe because when it fails it fails always buy expensive carbon. I think it’s slowly, which is why it is also used in because the local hotshot flies and equips Kieth Beato, bicycling bruiser. other applications where these qualities his model with exactly the same carbon are important. My enormous Asian and fiber helicopters the pros and paid shills After finishing my regular Sunday morn - European competitors offer model heli - are flying. They ask the accomplished fly - ing ride with a couple of friends, I headed copters featuring side frames made of ers what kind of helicopter they have, home on my usual route eastbound to - carbon fiber, which are a little bit lighter, then go online and get the same thing. ward the Oakland Hills from Alameda a but also more fragile, a lot more expen - They don’t ask, “what's a good machine little after noon. As I clipped into to my sive, and prone to catastrophic failure. for me to get my feet wet with?” This new A.H.H. to begin my ascent after turn - does that sound familiar? usually happens without even visiting the ing left through a main intersection at While reading your site (about the local hobby shop to seek advice from Foothill and Coolidge, a man wearing a Roadeo) I was struck with how merely someone whose livelihood is answering long dark jacket and beanie began to walk substituting the phrase fiber-reinforced beginner type questions.