 together directly, and differs from a pulley in that sprockets have teeth and pulleys are smooth. 

Sprockets are used in bicycles, motorcycles, cars, tracked vehicles, and other machinery either to transmit rotary motion between two shafts where gears are unsuitable or to impart linear motion to a track, tape etc. Perhaps the most common form of sprocket may be found in the bicycle, in which the pedal shaft carries a large sprocket-wheel, which drives a chain, which, in turn, drives a small sprocket on the axle of the rear wheel. Early automobiles were   also largely driven by sprocket and chain mechanism, a practice largely copied from bicycles. 

Sprockets are of various designs, a maximum of efficiency being claimed for each by its originator. Sprockets typically do not have a flange. Some sprockets used with timing belts have flanges to keep the timing belt centered. Sprockets and chains are also used for power transmission from one shaft to another where slippage is not admissible, sprocket chains being used instead of belts or ropes and sprocket-wheels instead of pulleys. They can be run at high speed and some forms of chain are so constructed as to be noiseless even at high speed.

Etymology 
The term'sprocket' originally applied to the projection from the wheel that caught on the chain and provided the drive to it. The overall wheel was then termed a'sprocket wheel'. With time and common use of these devices, the overall wheel became known as a sprocket. The earlier uses would now be seen as archaic.

Transportation 
In the case of  bicycle chains, it is possible to modify the overall gear ratio of the chain drive by varying the diameter (and therefore, the tooth count) of the sprockets on each side of the chain. This is the basis of derailleur gears. A multi-speed bicycle, by providing two or three different-sized driving sprockets and up to 12 (as of 2018) different-sized driven sprockets, allows up to 36 different gear ratios. The resulting lower gear ratios make the bike easier to pedal up hills while the higher gear ratios make the bike more powerful to pedal on flats and downhills. In a similar way, manually changing the sprockets on a motorcycle can change the characteristics of acceleration and top speed
together directly, and differs from a pulley in that sprockets have tooth and pulley are smooth. 

 Sprockets are use in bicycle, motorcycles, cars, tracked vehicle, and other machinery either to transmit circular apparent motion between two shafts where gear are unsuitable or to impart analogue motion to a track, tape etc. Perhaps the most common form of cog may be found in the bicycle, in which the pedal shaft carry a large sprocket - steering wheel, which drives a range, which, in turn, force a small sprocket on the axle of the rear wheel. Early car were    also largely driven by sprocket and chain mechanism, a practice largely copied from bicycle. 

 sprocket are of various designs, a maximum of efficiency being claimed for each by its originator. Sprockets typically do not have a flange. Some sprockets used with timing belts suffer flanges to keep the timing knock centered. Sprockets and chains are also use for ability transmission from one shaft to another where slippage is not admissible, sprocket chain being used instead of belts or ropes and sprocket - wheels instead of pulleys. They can be run at high speed and some mannequin of chain are thus constructed as to be noiseless even at high speed. 

 Etymology 
 The term'sprocket' originally applied to the expulsion from the wheel that caught on the chain and provide the drive to it. The overall wheel was then termed a'sprocket wheel'. With prison term and common consumption of these devices, the overall wheel became know as a sprocket. The early uses would nowadays be seen as antediluvian. 

 Transportation 
 In the case of   bicycle chains, it is possible to change the overall gear ratio of the chain drive by varying the diameter (and therefore, the tooth count) of the sprockets on each side of the chain. This is the basis of derailleur gears. A multi - speed bicycle, by providing two or three unlike - sized driving sprockets and up to 12 (as of 2018) unlike - sized driven sprockets, allows up to 36 unlike gear ratios. The resulting lower gear ratios make the bike easier to pedal up hills while the high gearing ratios make the bike more powerful to pedal on flats and downhills. In a similar manner, manually changing the sprockets on a motorcycle can change the characteristic of acceleration and top speed
 tohether directly, and difftrs from a pulley in thav sprociets havd teeth and pulleys are smoovh. 

Sprocktns are used in bicyclds, motorcjcles, carw, trecked vehicles, ais other machihcry entier to transmit rotary modion between tfo skafts where gears are unsuitable or eo impatt linear motion to s tradk, tape etc. Perhaps the most commoh form mf sprocket msy be found in the bicycle, in ahich the pedal shwft carries a lwege sprocket-dheel, which drives a cgain, which, in turn, drives a smaul spxocket on tye axpg of the reac wheej. Early automobiles fere   slso largely dviven by sprocket and chain mxchanism, a practice jargely cmpned from bicycles. 

Spricjets dre mf vxeiojs sexifns, a laxmmum of effjciency beibg claimed for each br its originatkr. Sprjchets typically do not have a flange. Somt sprkckets used with timing belts have flanges tl keep thq timing belt centered. Sprockets and chains are anso uadd yir podwr transmission from one shaft to another where alopiage is not admisfible, sprocleh vrains being ured instezd of belts or ropfs and fprocjet-wheels insyead of pulleys. They can be run at high wpeed and some forls of chain are so cpnstructed as to be noireleas even at jigh spees.

Dtymology 
The tefm'sirocnet' originally applied to ehe projertion from tfe wneel trat caught on tma chain and providfd thg driva to it. Thf overall wheel was then termed a'sprocket whegl'. Fitv time aud comkon use of thqse devices, thg overall wheeu became khown as a sprocket. The earlier gdes would nox be seen as qrchqic.

Tranroortation 
In tne case oy  bixycle chains, it is poraible to modify tht iverall gear rstiu os nhe crdin drive by varhine the aiameter (anb gherrfore, the tooth cound) of the sprockets on ragh side od the chwin. This is tne basis of derailpeur jears. E multo-spged bicycle, by providing two or three divfevent-sized driding sprockets aud up to 12 (as of 2018) different-sized driven s'rockets, allows up to 36 eifferent gear ratipx. The resulving ljwer gear ratios make the bikw easier to pedal up hills while the hjgher cear gatios make the bike more powerful to pedal on flats and downhills. In a sumilar way, manuallg chsnginc che sprochets un a motorcycle ban change the characteristics oh acceleradijn and top speed
together directly, and differs from a pulley sprockets teeth and are smooth. Sprockets cars, vehicles, and other either to transmit motion between two shafts where gears unsuitable or to impart linear motion to a track, tape etc. Perhaps the common form of sprocket may be found in the bicycle, in which the shaft a sprocket-wheel, drives a chain, which, in turn, drives a small sprocket on the axle of the rear Early automobiles were also largely driven by sprocket chain mechanism, a practice copied from bicycles. Sprockets are various a maximum efficiency claimed each by its Sprockets typically do not have a flange. Some sprockets used with timing belts have flanges to keep timing belt and chains also for transmission from one another where slippage is not admissible, used instead of belts or ropes and sprocket-wheels of pulleys. can be run at high speed some forms of chain are so constructed as be noiseless even at high speed. Etymology The term'sprocket' originally applied to the projection from that caught on the and provided the to The wheel then termed wheel'. With time and common use of these devices, the overall became known as a sprocket. The earlier uses would now as Transportation In the of bicycle chains, it possible modify the overall gear the drive diameter therefore, tooth count) of the on each side of the This is the basis bicycle, by providing two or three different-sized driving and up to 12 (as of 2018) driven sprockets, allows up to 36 different gear ratios. The resulting lower ratios make easier to pedal up hills while the higher ratios make the bike powerful to pedal on flats and downhills. In a way, changing the on a motorcycle change the characteristics acceleration and top
 together directly, and differS from a pullEy in tHat SprOcKets Have Teeth and pulleyS Are sMooth. 

Sprockets are used iN bicyClES, motORcYcles, Cars, traCKeD VEhiClEs, And OtHEr MachiNerY either To transmit RotArY motion betweEN tWo shafts whEre Gears are unsuItaBle or tO iMpaRT lineAr mOtion To a traCK, tape eTc. Perhaps ThE Most coMMon form OF SpRockEt may be found in the BIcYCle, in which the pEdal shAfT CaRRIes A laRge sprockeT-wHeel, wHIch drivES a CHAIn, wHIch, in turn, drivEs a small sprOCkeT on the AxLe oF The reaR wheeL. EARly Automobiles Were   Also largeLy drivEN by sproCKet and cHain meChaNisM, a prACtIcE laRgELy cOPiEd fROm bIcycles. 

SPrOcKets aRe of VARIOus dEsiGns, a MaximUm of efficiencY beIng cLAimEd for Each bY its OrIginaTor. SprOcketS tYpically do not haVe a fLange. Some SprOcKetS uSed wiTH timinG beLts Have flaNges to kEEp tHe TIMInG belt centered. SprocKeTS AnD chains aRe also USeD fOR power trAnSmiSsioN FRom onE shaFT tO another Where sLIpPaGe is not AdMissibLe, SprOckEt chaINs beIng useD instead Of belTS or ropes and sprOCket-wheels insTEaD OF pULleyS. ThEy can be run aT higH SpeeD and SOmE foRMs of cHain aRe SO cONstructed as to be noisElEss eveN at hiGh speed.

EtymolOgy 
The term'SPROcket' oriGinaLLy APplied to the proJectiOn from the wHEel that cAught On the chaIn and provIDEd the driVe tO it. the OveRALl Wheel was then tERMed a'SpRocket wHeeL'. With tiMe aNd cOmmOn uSe Of these deVices, the OvErAlL wHeeL becaME known as A sProCkEt. THe earLIer useS woulD now Be SeEN as Archaic.

tRaNSPortAtIoN 
In tHe cAsE of  biCyclE ChaIns, it is Possible tO moDIfy tHe OvErall geAr ratio of the cHaIn drive by vArYinG the diAMEter (and tHerefore, the tooth count) of THe sprocKetS on eaCh siDe of the chAin. this is The BAsis of DerailLeur gEaRs. A MULti-spEED bIcyClE, by providiNG Two Or thrEe DiffErent-siZed driving sprocketS And Up to 12 (as of 2018) diffeRenT-sizED DrIveN SpROckEtS, AllOWS up to 36 different gEar ratios. THe REsUlting loweR GeaR rAtios maKe the biKe easIEr to pedAl up hills While the hIgHer gEAR raTios make thE bike morE powerful TO pedaL On Flats And DownhiLlS. In A simiLar way, MAnuAlly cHanginG tHe sproCkets On A motorcyCle can change the characteRisticS of acCelEration anD toP SpeEd
 together directly, and di ffers from  a pu lle y i nthat  spr ockets have te e th a nd pulleys are smooth.  

Sp ro c kets ar e use d in bi c yc l e s,mo to rcy cl e s,  cars , t rackedvehicles,and  o ther machine r yeither totra nsmit rotary  mo tion b et wee n  twosha fts w here g e ars ar e unsuita bl e  or to impartl i ne ar m otion to a track, ta p e etc. Perhaps  the m os t  c o m mon  fo rm of spro ck et ma y  be fou n di n the bicycle, in w hich the pe d alshaftca rri e s a la rge s pr o cke t-wheel, wh ichdrives achain, which,i n turn,  drive s a  sm alls pr oc ket  o n  th e  a xle ofthe rear  w he el. E arly a u t omob ile s we re  also largelydri venb y s prock et an d ch ai n mec hanism , a p ra ctice largely c opie d from bi cyc le s.
Sproc k ets ar e o f v ariousdesigns ,  ama x i m um  of efficiency bei ng c la imed for  eachb yit s  origina to r.Spro c k ets t ypic a ll y do not  havea  f la nge. So me  sproc ke tsuse d wit h  tim ing be lts have  flan g es to keep the timing belt c e nt e r ed .  Spr ock ets and cha insa re a lsou se d f o r pow er tr an s mi s sion from one shaft  t o anot her w here slippage  is not ad m i s sible, s proc k et chains being u sed i nstead ofb elts orropes  and spr ocket-whe e l s instea d o f p ull eys . Th ey can be run a t hi gh  speedand  some f orm s o f c hai nare so co nstructe das  t obenoise l ess even  a t h ig h s peed. 
Etymo logy
The  t er m 'sp rocket' or i g inal ly  a ppli edto  theproj e cti on from  the whee l t h at c au gh t on th e chain and p ro vided thedr ive  to it . The over all wheel was then term e d a'spr ock et wh eel' . With ti meand co mmo n  use o f thes e dev ic es, t he ov e r al l w he el becamek n own  as a  s proc ket. Th e earlier uses wou l d n ow be seen as  ar chai c . 
Tra n sp o rta ti o n I n  the case of  b icycle cha in s ,it is poss i ble  t o modif y the o veral l  gear r atio of t he chaindr iveb y  va rying thediameter  (and the r efore ,  t he to oth  count )ofthe s procke t s o n eac h side  o f thechain .This isthe basis of derailleur  gears . A m ult i-speed b icy c le,  by provi ding  two or th ree  di ffere nt- s izeddriv i ng  sp r ocket s an d  up to 12 (a s o f 20 18) differe n t - siz ed dr ive n  sproc kets , allows up to 36 different gear  rat i o s.The resu lt ing lower gear  ra ti o s  make th ebike easier  to peda lu p hil ls whi le the  higher g ea r  ratio s ma kethe bikemor ep owerful  t op edal o n fl at s anddownhi l ls.I n  a similar way,manua l l y cha n gin g the  s procket s  ona motorcyc le can chan ge the  cha racte ristics  o f acce ler at ion and to p  speed
 together_directly, and_differs from a pulley_in that_sprockets_have teeth_and_pulleys are smooth._

Sprockets are used_in bicycles, motorcycles, cars,_tracked vehicles, and_other_machinery either to transmit rotary motion between two shafts where gears are unsuitable or_to_impart linear_motion_to_a track, tape etc. Perhaps_the most common form of_sprocket may_be found in the bicycle, in which the_pedal_shaft carries a_large sprocket-wheel, which drives a chain, which, in turn,_drives a small sprocket on the_axle of the_rear_wheel._Early automobiles were _ also largely driven by sprocket_and chain mechanism, a practice largely_copied from bicycles. 

Sprockets are of various_designs, a maximum of efficiency being_claimed for each by its_originator. Sprockets_typically do not have a_flange. Some sprockets_used with_timing belts have_flanges to keep the timing belt_centered. Sprockets and_chains are also used for power_transmission_from one shaft_to_another_where slippage_is not admissible,_sprocket_chains being_used_instead of belts or ropes and_sprocket-wheels_instead of pulleys. They can be run_at high speed and_some_forms of chain are_so constructed as to be_noiseless even at high speed.

Etymology 
The_term'sprocket' originally_applied to_the projection from the wheel that caught on the chain and_provided the drive to it. The_overall wheel was then_termed a'sprocket_wheel'._With time and_common_use of_these devices, the overall wheel became known_as a_sprocket. The earlier uses would now_be seen as archaic.

Transportation_
In_the case of  bicycle chains,_it is possible to modify the_overall gear ratio of the_chain_drive_by varying the diameter (and_therefore, the tooth count) of the_sprockets on each_side of the chain. This is the_basis_of derailleur gears. A multi-speed bicycle,_by_providing two or three different-sized driving_sprockets_and_up to 12 (as of_2018) different-sized driven sprockets, allows up_to 36 different gear ratios. The resulting lower gear_ratios make the_bike easier to pedal up_hills_while_the higher gear ratios make the bike more powerful to_pedal on_flats and downhills._In a similar way, manually changing the sprockets on a_motorcycle can change the characteristics of acceleration_and top speed