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Anatomy of a Bike |
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Excerpt from: Bicycle Reference Manual for Developing Countries. Edited by Barbara Gruehl Kipke, April 1991 (updated September 2009). Contents: Which shop? / Second-hand / Changes / Repairs / Maintenance chart Women / Kids / Health / Theft Is cycling safe? / Facts and figures / Cycle Planners' A-Z / Books / Organisations Most bikes these days are sold 'off the peg' rather than tailored to your requirements. The following may help you choose between the 'package deals'.
Which shop?Bikes often need adjustments or repairs after purchase, so it is worth buying from a place near you that specialises in cycles. A good shop should give your bike a check over a month or two after purchase This is particularly advisable for bikes with cotterless cranks. Shop around to see what sort of a range they have, what they suggest and whether they are prepared to mule alterations (see 'Changes' below) free or cheaply. Check with other cyclists for warnings or recommendations. Avoid mail order suppliers (apart from those listed on p35) us many of the bikes they sell are junk and, if anything goes wrong (it will) parts and service may be a problem. Second-handEither buy one from a shop (which must offer a guarantee) or take along a knowledgeable friend to check it over. A used bike may not be u bargain if you have to spend money on new tyres, repairs or whatever to get it into shape. Points to look out for are:
If possible, ride the bike on a quiet road - defects usually make a noise. ChangesIt is unlikely that the bike you choose will be exactly what you want; however, it is often relatively cheap to get changes made by the shop when you buy it.
RepairsDon't give up in disgust when something goes wrong; cycles are very simple machines to repair. The next two pages contain excerpts from the Reader's Digest guide to cycle repairs. For a more technical (and complete) guide see Richard's Bicycle Book (Pan, £2.95). Most problems can be located by listening carefully while riding along a quiet road; apply a bit of logic after checking how frequent the noise is, and whether it only happens when you pedal. If you are not sure what the problem is, or can't (or won't) do the repair yourself, take it along to a bicycle repair shop, which are listed in the back. The Campaign has the occasional 'Dr Bike' surgeries, where you can get your bike checked over for free; ring the Campaign (928 7220) for details.
Mending a punctureA flat tyre may be caused by a faulty valve or punctured inner tube, Check the valve first. If it is OK, note the position of any flints or nails that may have damaged the tube before removing the tyre. After removing the tube, check that the rim tape is in good condition and covering the spoke nipples; and remove any flints or glass from the tyres. To detect a puncture without using water, run the inflated tube around close to your ear or lips so that you can feel or hear the escaping air. It air is escaping from an old patch, remove the patch and remove the old glue with glasspaper. You need a repair kit (70p) a pump (£2) three tyre levers (70p) and a universal spanner (70p). How to mend a puncture (A description with pictures on wikihow.com) Adjusting brakes and fitting new blocksAdjust brakes so that the blocks are about 3mm from the rim. To draw the shoes closer to the wheel, turn the knurled adjuster anti-clockwise while gripping the brake blocks together against the rim, to release the tension of the cable. Bicycle brake systems: Side-pull brake / Centre-pull brake (article on wikipedia.org) Replacing and adjusting brake cablesWhen a cable breaks, replace it immediately. The two common types of brakes are centre and side pull, and the two types of brake cables are those with barrel-shaped nipples, and those with pear-shaped. Front and rear brakes must be regularly checked to make sure that the inner cables are not frayed and the outer sleeve is not stretched. Regular lubrication gives the cables and their sleeves a longer and more efficient life. All brakes have some way of adjusting the tension and keeping the brake blocks as close to the wheels as practicable. When the cable has been replaced, press the brake lever a few times so everything draws together, and make the final adjustments with the adjuster screw. How To Change A Gear Or Brake Cable (article on bikecyclingreviews.com) WomenWhy is it that men behave as though women cycle to expose themselves to the verbal judgement of any passing male? The circumstances range from the ridiculous to the more ridiculous. When I cycled up Whitehall three 16 year olds formed a cordon of two-wheeled lawnmowers around me, shouting obscene suggestions of what they wanted to do to me. There was the man old enough to be my grandfather who whispered coarsely from the protective custody of the zebra crossing when I stopped to let him cross. After pub closing time it is not uncommon for the comments to turn to a symbolic spitting, or, on one occasion, the spraying of Coke from the window of a passing car. I cannot prevent myself from bitterly resenting their invasion of my privacy; and yet I carry on cycling around London. No other means of transport combines regular exercise and almost total flexibility - the only crucial factor is the distance. As exposed to insult as you are, it is far safer than waiting on dimly lit streets or empty platforms. It also has the advantage that as you sail pass some lecherous male, it is easy (and safe) to shout 'fuck off'. Apart from problems such as these, cycling is pretty much a unisex sport. Erotic it isn't (whatever those 16 year olds may think); the only effect I have noticed is that standard cycles can cause cystitis. If this is a problem, there are various saddles on the market that are designed for women so that they don't reach the parts that other saddles... There is far more choice in men's bikes than women's (particularly in sports models) which means that they come in more sizes and are easier and cheaper to buy second-hand. If you don't like a man's (diamond) frame then a mixte frame is slightly stronger than the traditional step-through (ladies') frame, while still being easier to get on and off. If you are happy with the traditional three speed upright bicycle, they are easy enough to buy. They have their advantages - you can get a wire basket that fits on the front to take your belongings. (Don't put your purse on top - purse snatchers operate on motorbikes these days.) You can also buy uprights like the Raleigh Cameo, which has a chain guard that protects your leg from grease and lengthens chain life. Another sensible item is the skirt guard, which stops clothing being caught in the rear wheel. In London the ubiquitous street lighting means there is rarely a problem in seeing where you are going. Far more important is making sure that you can be seen; to this end a full complement of lights and reflectors is essential. (Deborah Arnott) KidsVery young children can make their first journeys in baby slings, but an upright riding posture is necessary for both comfort and safety. Children should not be put into child seats until they have good head control and can sit up (usually about nine months to a year). Head support, safety straps, footrests and shields and a sturdy attachment to the bike are crucial factors when choosing a seat, yet no models satisfy all these criteria. Look at brands such as Bikit, Safe-ride, Troxel, Pac-2 and DCM and expect to pay £25+. Avoid the cheaper Leco seat, which is uncomfortable and offers little protection. If you are carrying two children, an adult trike can take them in seats mounted between the rear axle. For children aged between two and six, child seats mounted on the top tube are the alternative. They are lighter and smaller than rear mounted models, and the child is partially shielded by the adult's body and in full view. In all cases make sure the child is well wrapped up and not suffering from the cold. Child helmets are available (£15+), or try advertising for 'hand-me-downs'.
HealthCycling benefits not only your own health but that of other people. Only very rarely - unlike the car - do we injure other people; we do not pollute and we do not use up irreplaceable resources of fossil fuel. Our energy supply is in fact perpetually renewable for as long as crops continue to grow on the earth. This may not be as long as it might be, given the propensities of homo sapiens, but it will almost certainly be longer than the expected life of our fuel reserves. The atmosphere remains heavily polluted by the motor car, but it is not as bad as it was, and not as serious for cyclists as some make out. Lead in petrol remains (in my opinion) a national scandal, but its main danger is to the developing brains of the under 3s, and anyone old enough to be cycling is almost certainly beyond that sort of damage to their central nervous system. The hydrocarbons and nitrogen oxides from engine exhausts may well be more dangerous to health than was thought a few years ago. However it is debatable whether the cyclist is more vulnerable than the motorist, who tends to stay on the more polluted main roads. Carbon monoxide from car exhausts, about which many emotive paragraphs have been written, is of no consequence to the cyclist. Research on volunteer nurses and medical students from St Mary's Hospital in Paddington showed that the carbon monoxide level in their blood was lower than normal after cycling for half an hour in traffic. This was because their heavier breathing was blowing off more of their own carbon monoxide - a natural break-down product of our worn out red cells - than they were breathing in from the traffic. Cigarette smoking produces carbon monoxide levels far higher than you can get on city streets. There is no doubt that we feel better when we exercise regularly, although research cardiologists still tend to maintain that the medical benefits of exercise have not been proved. However, there is no doubt that those who exercise regularly live longer. Veteran cyclists and cross-country runners are known to be significantly less prone to arterial disease such as heart attacks and strokes. (Dr Ronald Williams) This theme is expanded in an article by Dr Williams in the British Medical Journal, 22 December 1979. If you are interested in getting fitter, the Health Education Council are publishing a free booklet on the subject in July 86; phone them on 631 0930 for details. TheftIt is said that if you can keep a bike for more than five years in London you should phone the Guiness Book of Records. Theft isn't inevitable, but if you don't take precautions your bike will become yet another statistic very quickly. Only about 4% of bike thefts are cleared up by the police.
Bicycle locks (article on wikipedia.org) Now, a brief guide to what you get for your money.
Nurses' locks These fit on to the bike and lock the rear wheel only. They're useful for when you are leaving the bike for a minute or two; they aren't secure for longer periods. Accessories A thief who can't pinch your bike may have a go at what is attached to it. Battery lights disappear very quickly, so either bolt them on securely or take them with you when you lock up. And, of course, saddles, gears, brakes and more can disappear as well. Insurance The cheapest way is to add your bike to your household contents policy. However, do study the small print; many such policies pay out at most £100 per cycle, and charge you an extra premium if you live with people you're not related to (yes, we know it's stupid). Also, many don't include third party insurance, which safeguards you financially if you cause damage or injury to others. Some cycle shops can arrange special cycle theft insurance; however, most cyclists take out one of the policies offered by the cycling organisations such as the London Cycling Campaign. When you take out a policy, do declare your (bike) losses so far, but don't be surprised if you get turned down if you've had more than two or three stolen in the last few years. The police Despite their less than wonderful record in recovering stolen bikes, do let them know if yours is nicked. There is no central registry of stolen bikes (why not?) so tell all likely police stations. If your bike is recovered after a joy-ride, you are more likely to get it back if it has been postcoded or labelled in some way. WinterYou don't have to put away your bike when winter comes. Even in wet weather, cycling can be tolerable (and sometimes even enjoyable) if you wear the right clothes, ride a bit slower, avoid slippery surfaces such as pothole covers. Do wear something bright so you can be seen through the murk.
Is cycling safe?On the surface, cycling looks dangerous; according to the official figures, it is ten times as dangerous as driving. However, it isn't quite as bad as this because...
Confused? All the above means is that cycling is not quite as dangerous as it is made out. However, improve your chances by following the advice on page 8 about cycling in traffic. If you are responsible for young children who want to cycle, make sure they are trained before they go out onto the roads (see 'kids'). Much of the recent rise in cycle accidents involves children. Facts and figuresAmaze your friends and win at Trivial Pursuits with these facts at your fingertips.
Cycle Planners' A-ZAccidents. Properly designed cycle schemes should help to reduce these. Borough Council. There are 33 (including the City) in London. Since GLC abolition your borough is responsible for cycle planning but it won't get the help from the Department of Transport that the GLC provided. Contact the Planning Department to find out what plans they have got for cyclists, the Engineers Department if they are doing anything on the roads, Road Safety for accident figures and cycle training.
Crossings of larger roads. There are two basic types: Contra-flow cycle lanes. These let cyclists ride up one-way streets the wrong way legally. They can extend the full length of the street such as Upper Ground in Southwark and Crisp Road in Hammersmith; or just let cyclists past short sections of one way traffic into a two way street such as Meymott Street in Southwark. Department of Transport. They have a small team of civil servants working on cycle schemes. They will fund 'innovatory and experimental' cycle schemes but seem to have run out of ideas. (Their London score so far is only £70,000 on three schemes). They now will only fund cycle schemes thought up by local councils if they are part of a highway or traffic management scheme of more than local significance (i.e. part of a very expensive scheme). GLC - Good for London Cyclists. While it was alive it had 20 officers with a budget of £2 million a year working on cycle schemes. Between 1981-1986 it completed, with the borough councils, over 50 cycle schemes, 1,650 cycle parking stands and made sure that other transport schemes didn't forget bikes. Contrast their positive steps to help cyclists with the timid policy of the Department of Transport. The GLC is dead - long live the GLC! Gaps in road closures: all road closures should have gaps for cyclists as we do not cause the problems they are meant to solve (rat-running through residential areas). While most councils agree with this in theory there are still hundreds of closures that don't let us through. They make ideal links in the cycle route network at very low cost.
Lanes, such as an
Advisory lane. Marked by a dotted white line parallel to
the footpath. Neither you nor car drivers
have to take any notice of it. It is the most basic
measure to protect cyclists. The one in Fulham
Road was opposed by Kensington and Chelsea council on the
grounds that it would cause 'chaos'.
Travel along it and make up your own mind. Paths in Parks. London parks, as they are quiet and traffic-free, provide ideal links in the cycle route network. The GLC opened up many paths during their time, eg Hampstead Heath Battersea Park; many other boroughs, such as Lambeth, Hackney, lslington and Hammersmith have followed suit. Other authorities are not so co-operative; the paths in Hyde Park are very popular and have caused no problems but the Royal Parks Department of the Department of the Environment have refused to open up similar routes in Regents Park and Kensington Gardens despite the high level of illegal use and the busy surrounding roads. Parking. Thankfully the days of the wheel-buckling concrete block and other front-wheel holders are numbered, and the 'Sheffield Rack' reigns supreme. (Design Centre approved after pressure from the Campaign). Public places with Sheffield racks include the National Theatre, Royal Festival Hall, Victoria and Albert Museum, some BR stations and even the Barbican (after pressure from us). So if your favourite station, theatre, hall, shops, college or whatever has not got any, make suggestions to the management or your council planning department. The Campaign can give you further information. Routes. Put together a couple of crossings of main roads, a cycle lane here, a contra-flow lane there, some signs to show cyclists the way, and secure parking. Hey presto, you have a cycle route. The GLC put in over 11 fully signed cycle routes such as the Ambassador Route Dart 1. Somers Town Route (Camden) and Dollis Brook Route (Barnet). They are shown in the centre-section maps. Road Humps. Approved by the Department of Transport in 1983 these low lying law enforcement officers are a good way of slowing down traffic while still allowing it through. However, the Department's regulations are so restrictive that only a few have been put in London. No problem on a bike and they would make cycle routes safer for cyclists and residents. Staggered Stop lines. One small step for cyclists, one massive step for the Department of Transport. Allow cyclists to get ahead of the traffic at junctions so that drivers get a chance to see you before they cut you up. More common in Holland but they can be found in an infant stage at the Hotspur Route in Haringey and at Locks Bottom in Bromley. Statistics. The trouble is that borough councils rely solely on police accident data when planning schemes. Many studies have shown that cyclists are more likely to go to the hospital than the police station after an accident, and that police figures are probably 70% incomplete. It should be law that every hospital casualty resulting from a road accident is reported by the hospital to the police. Transport Supplementary Grant. How borough councils get money from the Department of Transport for traffic schemes. There is a catch; they can only spend it on highway and traffic management schemes of more than local significance. No one at the Department seems to know what this means although it must have a lot of zeros in the cost. It means that cycle schemes cannot be funded on their own. This should be changed. Trunk Road. Controlled by the Department of Transport who now own over 200 miles in London. They have a Regional Cycling Officer for London who is supposed to consider the needs of cyclists. Their record is not impressive, the last incumbent suggested Hyde Park Corner was rather jolly on a bike and banned cyclists from some new proposals such as the Hackney to M11 Link Road. They want to spend £1.5 billion on the 65 miles of road they took over from the GLC; at £21 million a mile this is not a tree planting programme (Tim Pheby) MagazinesAs well as those listed below, most cycling organisations produce newsletters or magazines.
Books
OrganisationsMost of the organisations below will give advice, information and help; if writing, do include a sae. Private homes are indicated by a *.
Mail to: Barbara Gruehl Kipke (barbara@mobility-consultant.com) or to the Webmaster (webmaster@mobility-consultant.com). Back to the top |