321:. While these belts cannot be shifted between gears like a chain, they offer singlespeed or hub geared drivetrains with improved increased wear resistance, quieter operation, and lubrication-free cleanliness. Belts also do not change length during their lifespan in the same way that chains "stretch" or increase in pitch as their link pivots wear. This keeps the pitch of the belt's teeth constant and dramatically decreases wear on gear teeth. Belts have failed to overtake chains in popularity for bicycles because they have historically been less efficient. Also replacement of the one-piece belt requires traditional diamond bicycle frames to have a split chainstay or seatstay.
328:
302:
horizontal slots. This allows both quick release or bolt on hubs to be used, or through-axle hubs with the appropriate dropouts. Sliding dropouts usually have set screws that bear on the front of them through the frame to adjust their position for tensioning and wheel alignment. The main advantage of sliding dropouts over track ends is realized when they are used with disc brakes, as the brake caliper mount is part of the left dropout, and thus moves with the dropout, maintaining the hub to caliper distance. Sliding dropouts can also include a derailleur hanger if multi-speed use is desired.
342:
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174:. Compared to a fixed-gear bicycle, a singlespeed is easier to ride downhill and around corners (the inside pedal can be kept up to avoid grounding). However, it does not help the rider pedal around the dead centres like a fixed gear, nor does it allow the fine speed control or easy trackstands that a fixed gear permits. The pawls of a dirty and unmaintained freewheel can also clog, leaving the rider with no drive; this is impossible on a "fixie".
183:
285:
derailleur, to be used. Only relatively uncommon frame designs with single pivots that are concentric with the bottom bracket allow the use of more desirable static chain tensioners. Another consideration is the generally increased amount of pedalling while standing up that is inherent to single speed mountain biking, which increases losses from suspension
426:, or double-sided hubs are threaded on both sides. Usually one side has a track-type threading (with lock ring), and the other side is threaded for a single-speed standard freewheel. It is possible to find them with track threading on both sides, but not easily. The cyclist can then change gears manually by reversing the drive wheel.
384:
this retains unnecessary weight and the chainline will most likely not be perfect. A more thorough conversion will involve replacing the freewheel with a single-speed one, and re-dishing the rear wheel. On bicycles with vertical dropouts, a chain tensioner is often required to allow the correct tension on the resulting shorter chain.
383:
Single-speed bicycle builders have converted many former multi-geared cycles into single or fixed gear through the removal of the derailleurs and associated hardware. The simplest conversion uses the existing freewheel/cassette and crankset, the chain being cut to fit the desired gear ratio. However
313:
or in the rear hub. If neither of these are an option, when working with an existing frame not originally designed for single-speed use for example, some kind of idler pulley, such as the Surly
Singleator or simply a short cage rear derailleur can be used to take up chain slack. As well, finetuning
165:
As the single-speed bicycle lacks alternative gearing ratios, it is less versatile, as it cannot be pedaled efficiently outside of its single gearing range. Without lower gearing options, the single speed bicycle is generally more difficult to pedal uphill. Conversely, its dedicated gear ratio also
210:
can be made as or changed into a single speed. Mountain bike single speeds designed for trail riding often have a relatively low, or easy and slow, gear ratio. This allows them to climb hills and deal with obstacles and gradients better. This typically requires the rider to be more fit or skilled
301:
or track ends. These allow the rear wheel to be moved fore or aft as necessary. Using chain tugs with track ends ensures that optimum chain tension can be achieved with the wheel remaining centered. A similar design, sliding dropouts, uses detachable dropouts that are bolted to the frame through
429:
The usual way to use a flip-flop hub is to have a fixed gear on one side, and a single speed freewheel on the other. Ideally, the freewheel sprocket would be one or two teeth larger than the fixed sprocket. This allows for extended hill climbs at a lower ratio than the fixed gear provides. The
284:
frame designs either have a single pivot that is not concentric with the bottom bracket, or a linkage with a variable center of rotation, the distance between the bottom bracket and rear axle varies throughout the suspension's travel. This requires a sprung chain tensioner, similar to a rear
410:
Fixed-gear setups work especially well with higher 40s chainrings, so the rotation ratio is closer to a wider 3:1, avoiding the tighter ratios, which will spin too fast, especially when descending steep hills.
414:
Note that the larger diameter gear and chain ring, clearly, offers the best longevity, with much better wear characteristics than smaller gear and chain ring sets and less rounding of the teeth, over time.
406:
A reasonable "road" gear ratio, for the 700 × 28c wheel size a, is 46:17, approximately a 2.7:1 ratio and 71.75 gear inches, for very versatile asphalt riding, and a better lifespan with good road duty.
399:, for versatile trail riding. A great "on road" gear ratio, for the 26″ wheel, is 42:17, approximately a 2.5:1 ratio and 64.2 gear inches for versatile tour riding. Many British enthusiasts used to
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limits top speed, and is slower than a multi-geared bicycle on flat or descending terrain once bicycle speed exceeds the rider's ability to maintain continuing increases in
137:
or other gearing systems, there are fewer parts on the bicycle that require maintenance, making this type of cycle useful for city commuting in all weather. The drivetrain
149:, ramps and pins all improve efficiency. As a single rear cog takes less space than the typical seven to twelve cogs present on most multi-geared rear cassettes, rear
403:
on 27–inch–wheeled lightweights on a single fixed–gear of 69 inches before multi–speed gearing became universally popular, though this certainly made for tough work.
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Single-speed bicycle builders have devised a variety of methods for producing and maintaining the proper chain tension. The most common method is horizontal rear
186:
Racing bicycle, once equipped with multiple gears and derailleurs, converted to single speed. Note the semi-horizontal drop-outs, and redundant second chainring.
487:
211:
than the average rider in order to traverse the same terrain. Single speed bicycles designed for road riding typically have higher, or harder and faster,
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A single-speed mountain bike. The frame was modified by replacing the rear drop-outs with track fork ends to allow the chain to be tensioned.
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bicycles (fixies) are technically single speed, the term single-speed generally refers to a single gear ratio bicycle with a
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133:
A single-speed bicycle is generally cheaper, lighter, and mechanically simpler than its multi-geared equivalent. Without
17:
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289:. Therefore, full suspension mountain bikes are fairly rare, with hardtails and rigid bikes being much more common.
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the combination of chainring, cog, and chain length may suffice until the chain develops significant wear.
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for their reliability and durability. Depending on the situation, a messenger may prefer a
8:
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of a single-speed can be greater than today's typical multi-geared bicycles. A straight
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488:"What is the difference between a "single-speed bike" and a "fixed-gear" bike?"
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freewheel in this gear also allows the cyclist to coast on a steep descent.
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based single-speed, which can roll over many obstacles, or a fast and light
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145:, lack of chain drag from rear derailleur jockey pulleys, and lack of
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614:(First ed.). Triune Books, London, England. pp. 80–81.
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or other methods for varying the gear ratio of the bicycle.
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391:, for the 26″ wheel size, is 39:18, approximately a 2:1
555:"The White Industries ENO Single Speed Fixed/Free Hubs"
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Chain tensioned without a dedicated tensioner mechanism
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In the United States market, bicycle companies such as
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all have produced and marketed single speed bicycles.
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There are many types of modern single speed bicycles;
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Throughout the years bicycle designers have produced
170:(pedaling revolutions per minute), typically 85–110
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177:
115:
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42:, is the most produced bicycle model in history.
73:bicycles, most bicycles designed for children,
594:Belt tensioning device for belt driven bicycle
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480:
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1585:Bicycle- and human-powered vehicle museums
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530:"Bottom Bracket Eccentrics & Shells"
387:A very popular "off road" mountain bike
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27:Type of bicycle with a single gear ratio
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596:(1992) United States Patent 5221236
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87:bicycles designed for track racing
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112:mechanism to allow it to coast.
153:can be built with little or no
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379:Single-speed cycle conversions
347:Fixed-position chain tensioner
178:Types of single-speed bicycles
116:Vis-à-vis multi-speed bicycles
13:
1:
473:
334:Spring-loaded chain tensioner
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58:. These bicycles are without
509:"Why Singlespeed Why Fixed?"
7:
606:St. Pierre, Roger. (1973).
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218:Single speed bicycles and
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194:are always single speed,
1570:Animal-powered transport
443:for multi-speed bicycles
360:Eccentric bottom bracket
1445:Non-vehicular transport
668:Human-powered transport
610:The Book of the BICYCLE
305:Another method uses an
1595:Zero-emissions vehicle
187:
125:
43:
38:PA-02, a single-speed
234:-based single-speed.
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123:
75:cruiser type bicycles
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319:belt-driven bicycles
204:cyclo-cross bicycles
48:single-speed bicycle
1533:Alpine touring skis
1343:Hand and foot power
933:Cold-weather biking
873:Small-wheel bicycle
781:Glossary of cycling
746:Cyclo-cross bicycle
731:Cold-weather biking
307:eccentric mechanism
220:fixed-gear bicycles
93:, and single-speed
1538:Cross-country skis
1202:Litter/sedan chair
766:Flat bar road bike
467:Outline of cycling
457:Fixed-gear bicycle
224:bicycle messengers
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44:
18:Single-speed bikes
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974:Motorized scooter
969:Motorized bicycle
848:Recumbent bicycle
791:Motorized bicycle
222:are popular with
196:mountain bicycles
79:commuter bicycles
16:(Redirected from
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1403:Amphibious cycle
1358:(sliding rigger)
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1084:Invalid carriage
999:Other foot power
957:Electric bicycle
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293:Chain tensioning
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1151:Pulled rickshaw
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990:Treadle bicycle
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883:Touring bicycle
833:Porteur bicycle
801:Mountain biking
771:Folding bicycle
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706:Bicycle trailer
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269:, Swobo, Felt,
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1563:Related topics
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287:bob and squat
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280:Because most
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200:road bicycles
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161:Disadvantages
158:
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92:
91:road bicycles
89:, fixed-gear
88:
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72:
67:
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57:
53:
50:is a type of
49:
41:
37:
36:Flying Pigeon
32:
19:
1511:Snow and ice
1330:(fixed seat)
1233:Caster board
1166:Stairclimber
1126:Baggage cart
1105:Rowing cycle
1016:Kick scooter
1006:Balance bike
928:Wheelie bike
893:Trailer bike
853:Road bicycle
726:City bicycle
609:
601:
593:
589:
578:. Retrieved
575:"Singleator"
569:
558:. Retrieved
549:
538:. Retrieved
534:the original
524:
512:. Retrieved
503:
491:. Retrieved
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167:
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132:
103:
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47:
45:
1616:Cycle types
1590:Human power
1436:Ornithopter
1264:Street luge
1181:Wheelbarrow
1011:Dandy horse
843:Quadracycle
816:Singletrack
684:Pedal power
397:gear inches
267:Specialized
213:gear ratios
135:derailleurs
64:hub gearing
1621:1 (number)
1610:Categories
1523:Ice skates
1452:Foot power
1431:Helicopter
1396:Amphibious
1373:Hydrocycle
1366:Foot power
1306:Hand power
1259:Billy cart
1238:Snakeboard
1228:Pogo stick
1146:Hand truck
1131:Bath chair
1098:Row action
1089:Wheelchair
1062:Hand power
1053:Skateboard
1043:Freeskates
1033:Brakeboard
923:Velomobile
918:Velocipede
823:Party bike
721:Cargo bike
716:Boneshaker
580:2010-05-27
560:2007-10-19
540:2007-10-19
474:References
395:and 56.35
393:gear ratio
243:Cannondale
147:chainrings
139:efficiency
129:Advantages
106:fixed-gear
99:cyclocross
77:, classic
56:gear ratio
1550:Snowshoes
1378:Hydrofoil
1269:Snowboard
1176:Toy wagon
1171:Stretcher
1074:Handcycle
1048:Longboard
1038:Freeboard
937:ice cycle
493:March 27,
424:Flip-flop
247:Fuji Bike
232:road bike
143:chainline
110:freewheel
83:unicycles
1518:Crampons
1419:Aircraft
1274:Toboggan
1028:Kicksled
1021:Kickbike
903:Unicycle
898:Tricycle
868:Sociable
858:Roadster
811:Downhill
711:BMX bike
514:June 14,
434:See also
299:dropouts
101:bikes.
95:mountain
1579:outline
1575:Cycling
1495:Walking
1483:Running
1247:Gravity
1195:Carried
1079:Hobcart
1069:Handcar
962:Pedelec
913:Velocar
776:Go-kart
761:Fatbike
700:outline
696:Bicycle
389:gearing
259:Raleigh
239:Bianchi
168:cadence
52:bicycle
1476:skates
1464:skates
1383:Pedalo
1356:Rowing
1350:Rowing
1328:Rowing
1223:Trikke
950:assist
756:Enduro
618:
462:Keirin
206:, and
190:While
151:wheels
1318:Kayak
1313:Canoe
1298:Water
275:Niner
263:Giant
1424:list
1334:Punt
1186:Sled
1136:Cart
806:27.5
691:29er
676:Land
616:ISBN
516:2017
495:2018
401:tour
273:and
271:Trek
255:Kona
155:dish
97:and
34:The
1528:Ski
1412:Air
251:KHS
172:rpm
71:BMX
1612::
265:,
261:,
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497:.
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