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 VINTAGE CAMPAGNOLO GRAN SPORT REAR DERAILLEUR EARLY 1950S FIRST GENERATION $1,500.00 Time Remaining: 22d 12h 45m Buy It Now for only: $1,500.00 |
 SRAM RED BLACK SHIFTERS AND FRONT REAR DERAILLEUR $725.00 Time Remaining: 21d 21h 46m Buy It Now for only: $725.00 |
 Campagnolo campy Super Record 11 very rare prototype rear derailleur collectible $699.00 Time Remaining: 16d 16h 58m Buy It Now for only: $699.00 |
 Campagnolo Record Carbon Rear Derailleur 10 speed Mint Condition $440.00 Time Remaining: 16d 17h 50m Buy It Now for only: $440.00 |
 Shimano Dura Ace 7800 Shifters Derailleurs Brakes $399.99 Time Remaining: 6d 16h 27m |
 CAMPAGNOLO SUPER RECORD REAR DERAILLEUR PATENT 77 VINTAGE 180 gr MADE IN ITALY $399.00 Time Remaining: 4d 22h 5m Buy It Now for only: $399.00 |
 RARE PRIOR DERAILLEUR AND SHIFTER VINTAGE 220 gr SIMPLEX JUYHURET $399.00 Time Remaining: 19d 23h 13m Buy It Now for only: $399.00 |
 Vintage Campagnolo C Record Rear Derailleur 1st Generation Rare 1984 Date Code $349.99 Time Remaining: 19d 21h 48m Buy It Now for only: $349.99 |
 CAMPAGNOLO GRAN SPORT 1012 4 50S VINTAGE NICE REAR DERAILLEUR $349.00 Time Remaining: 22d 12h 6m Buy It Now for only: $349.00 |
 Campagnolo 50th Anniversary rear Derailleur Vintage $320.00 Time Remaining: 28d 7h 43m Buy It Now for only: $320.00 |
 Sram Red Rear Derailleur 10 Speed Short Cage $299.00 Time Remaining: 25d 19h 15m Buy It Now for only: $299.00 |
 Vintage Simplex Le Juy Tour De France Bicycle Bike Rear Derailleur 5 speed 1950s $249.00 Time Remaining: 22d 17h 51m Buy It Now for only: $249.00 |
 XXRare Huret Spcialits Shifter and Rear Derailleur Early 1950 years Road used $249.99 Time Remaining: 25d 13h 19m Buy It Now for only: $249.99 |
 DERAILLEURs SET CAMPAGNOLO NUOVO RECORD VINTAGE PAT 82 GUERCIOTTI ENGRAVED $245.00 Time Remaining: 7d 22h 16m Buy It Now for only: $245.00 |
 HURET JUBILEE REAR DERAILLEUR VINTAGE MADE IN FRANCE 140gr $249.00 Time Remaining: 4d 22h 5m Buy It Now for only: $249.00 |
 SRAM RED BLACK REAR DERAILLEUR BRAND NEW NEVER USED $225.00 Time Remaining: 28d 19h 25m Buy It Now for only: $225.00 |
 Sram Force Shifters Front And Rear Derailleurs $212.50 (12 Bids) Time Remaining: 16h 58m |
 Shimano M700 Deerhead Crankset 6206 Cantilever Brakes Derailleurs Shifters $200.00 Time Remaining: 4d 22h 53m Buy It Now for only: $250.00 |
 Vintage Campagnolo Super Record Rear Derailleur tuned very rare masi colnago $199.00 Time Remaining: 27d 15h 8m Buy It Now for only: $199.00 |
 Campagnolo Chorus Carbon Rear 10 Speed Derailleur Small Cage VGC $190.00 Time Remaining: 22d 11h 24m Buy It Now for only: $190.00 |
 SRAM XX 10spd Mountain Bike Rear Derailleur 10 Speed Long Cage $199.00 Time Remaining: 14d 22h 36m Buy It Now for only: $199.00 |
 CAMPAGNOLO SUPER RECORD REAR DERAILLEUR PATENT 84 TITANIUM BOLTS VINTAGE 200 gr $199.00 Time Remaining: 19d 23h 13m Buy It Now for only: $199.00 |
 CAMPAGNOLO SUPER RECORD REAR DERAILLEUR PATENT 82 TITANIUM BOLTS VINTAGE 200 gr $199.00 Time Remaining: 19d 23h 13m Buy It Now for only: $199.00 |
 CAMPAGNOLO SUPER RECORD REAR DERAILLEUR PATENT 83 TITANIUM BOLTS VINTAGE 200 gr $199.00 Time Remaining: 19d 23h 13m Buy It Now for only: $199.00 |
 REAR DERAILLEUR CAMPAGNOLO SUPER RECORD VINTAGE PAT 79 GOOD CONDITION $175.00 Time Remaining: 23d 20h 39m Buy It Now for only: $175.00 |
 VINTAGE CAMPAGNOLO GRAN SPORT FRONT DERAILLEUR EARLY 1950S FIRST GENERATION $150.00 Time Remaining: 2d 7h 45m Buy It Now for only: $150.00 |
 Shimano XTR RD M980 10spd Mountain Bike Rear Derailleur 10 Speed Long Cage $189.00 Time Remaining: 15d 22h 17m Buy It Now for only: $189.00 |
 shimano 105 group rear and front derailleur crankset cables SR brakes HTI $140.00 Time Remaining: 8h 23m |
 VINTAGE OFMEGA PREMIER ERNESTO COLNAGO DERAILLEURs SET $155.00 Time Remaining: 9d 18h 55m Buy It Now for only: $155.00 |
 Sram Rival Mini Group Rear Front Derailleur Chain Shimano 105 cassette $175.00 Time Remaining: 4d 12h 30m Buy It Now for only: $175.00 |
 SRAM RED Road Bike 10 Speed Rear Derailleur Carbon FIber 006 USED $175.00 Time Remaining: 21d 20h 59m Buy It Now for only: $175.00 |
 Shimano Dura Ace Front FD 7402 Rear Derailleurs RD 7402 Brake Levers BL 7402 $129.99 Time Remaining: 4d 9h 32m Buy It Now for only: $129.99 |
 Campagnolo 50th Anniversary Front Derailleur Vintage $149.00 Time Remaining: 28d 7h 31m Buy It Now for only: $149.00 |
 Shimano Dura Ace Di2 7970 Front Derailleur 10spd Speed Road Bike Electronic $153.50 (9 Bids) Time Remaining: 1d 2h 17m |
 Shimano XTR Shadow Plus RD M985 rear derailleur with clutch cage $150.00 Time Remaining: 2d 15h 9m |
 Shimano Dura Ace 7900 10 speed rear derailleur short cage RD 7900 $150.00 Time Remaining: 5d 2h 49m |
 VINTAGE SHIMANO DURA ACE 7400 DERAILLEUR SET Shifters+Front+Rear XLNT 6 7sp $159.00 Time Remaining: 26d 16h 58m Buy It Now for only: $159.00 |
 PAUL COMPONENTS POWERGLIDE Rear Derailleur Blue RARE $150.00 (1 Bid) Time Remaining: 4d 52m |
 Shimano Dura Ace 7900 Rear Derailleur 10spd Speed Road Bike Short Cage Race $149.99 Time Remaining: 1h 27m Buy It Now for only: $174.99 |
 SRAM XX Rear Derailleur 10 speed Medium Cage 2 x 10 Upgrade your XO $149.99 Time Remaining: 6d 2h 59m |
 Vintage Campagnolo Gran Turismo Road Bike Rear Derailleur Bicycle Made in Italy $149.00 Time Remaining: 11d 17h 56m Buy It Now for only: $149.00 |
 SRAM Red 10 spd Road Carbon Rear Derailleur AS IS WORKS GREAT $150.00 Time Remaining: 7d 8h 5m Buy It Now for only: $150.00 |
 SRAM Force Crankset and Front Derailleur $140.00 Time Remaining: 4d 2h 6m Buy It Now for only: $175.00 |
 Vintage Simplex Prestige Derailleurs Group Set 1970 for Gitane Peugeot Raleigh $119.99 Time Remaining: 16d 10h 8m Buy It Now for only: $119.99 |
 HURET JUBILEE REAR DERAILLEUR VINTAGE $149.99 Time Remaining: 24d 21h 13m Buy It Now for only: $149.99 |
 Vintage Simplex Prestige Derailleurs Group Set 1970 for Gitane Peugeot Raleigh $119.99 Time Remaining: 25d 10h 22m Buy It Now for only: $119.99 |
 SRAM X0 XO 9 Speed Rear Derailleur $149.00 Time Remaining: 10d 17h 41m Buy It Now for only: $149.00 |
 SRAM XO X0 ten speed short cage rear derailleur $149.00 Time Remaining: 16d 15h Buy It Now for only: $149.00 |
 HURET DUOPAR ECO REAR DERAILLEUR TOURING RANDONNEUR VINTAGE MADE IN FRANCE $149.00 Time Remaining: 17d 11h 35m Buy It Now for only: $149.00 |
 Campy Super Record 11 Rear Derailleur $135.83 (5 Bids) Time Remaining: 4d 1h 43m |
 Sram Red rear derailleur 148 grams used $148.00 Time Remaining: 4d 21h 1m Buy It Now for only: $148.00 |
 Campagnolo Velox Rear Derailleur Vintage VGC $126.00 Time Remaining: 23d 15h 48m Buy It Now for only: $126.00 |
 Shimano Dura Ace Di2 7970 Rear Derailleur 10spd Speed Road Bike Electronic $139.50 (11 Bids) Time Remaining: 1d 2h 17m |
 Shimano 105 FD 1050 RD 1050 Derailleurs Shifters SL 1050 Brake Levers BL 1051 $109.99 Time Remaining: 10d 12h 46m Buy It Now for only: $109.99 |
 Shimano Dura Ace RD 7800 Road Bike 10 Speed Rear Derailleur 10spd $139.00 Time Remaining: 15d 17h 10m Buy It Now for only: $139.00 |
 Shimano Dura Ace RD 7800 10 Speed Road Bike Rear Derailleur RD 7800 Short Cage $139.00 Time Remaining: 18d 17h 8m Buy It Now for only: $139.00 |
 Campagnolo Record 10 speed rear derailleur $113.61 (5 Bids) Time Remaining: 3d 3h 49m |
 shimano xtr rear derailleur m900 $130.00 Time Remaining: 6d 1m Buy It Now for only: $130.00 |
 SHIMANO DURA ACE 7401 REAR DERAILLEUR NICE RARE VINTAGE $109.00 Time Remaining: 14d 2h 12m Buy It Now for only: $109.00 |
 Vintage Simplex Prestige SGDG Shifter Derailleurs Group Set for Peugeot 1970s $109.99 Time Remaining: 24d 15h 25m Buy It Now for only: $109.99 |
 Ultegra 9spd left + right Shifters with Front + Rear Brakers Derailleurs $127.50 (4 Bids) Time Remaining: 1d 18h 29m |
 Campagnolo Record Carbon Titanium 10 Speed Rear Derailleur $127.50 (25 Bids) Time Remaining: 1d 1h 57m |
 SHIMANO DURA ACE RD 7800 SS 9 10 SPEED ROAD BIKE REAR DERAILLEUR $125.00 Time Remaining: 1d 17h 31m |
 Shimano XTR Front Derailleur FD M970 9 sp used $120.00 Time Remaining: 28d 21h 5m Buy It Now for only: $120.00 |
 Vintage Campagnolo C Record Rear Derailleur 2nd Generation $129.99 Time Remaining: 14d 16h 38m Buy It Now for only: $129.99 |
 Shimano Dura Ace RD 7700 Road Bike 9 Speed Rear Derailleur Short Cage 9spd $129.00 Time Remaining: 3d 19h 24m Buy It Now for only: $129.00 |
 Shimano Dura Ace RD 7700 Short Cage Rear Derailleur Road Bike 9 Speed $129.00 Time Remaining: 17d 19h 38m Buy It Now for only: $129.00 |
 Shimano Dura Ace 7700 Road Bike 9spd Rear Derailleur 9 Speed Short Cage $129.00 Time Remaining: 28d 20h 35m Buy It Now for only: $129.00 |
 CAMPAGNOLO CHORUS FRONT DERAILLEUR NOS NIB 286MM $99.00 Time Remaining: 21d 19h 11m Buy It Now for only: $99.00 |
 Shimano Dura Ace Front FD 7400 Rear Derailleurs RD 7401 7 speed Road Track $99.99 Time Remaining: 23d 14h 45m Buy It Now for only: $99.99 |
 Campagnolo Record QS Front Derailleur 10spd Campy Road Bike Race Bicycle $124.99 Time Remaining: 6d 2h 12m Buy It Now for only: $179.99 |
 Shimano XTR RD M971 A 9 Speed Mountain Bike Rear Derailleur 9spd Long Cage $125.10 Time Remaining: 14d 2h 5m Buy It Now for only: $125.10 |
 HURET NEW SUCCESS ARIS REAR DERAILLEUR VINTAGE MADE IN FRANCE $125.00 Time Remaining: 17d 11h 35m Buy It Now for only: $125.00 |
 DERAILLEUR VINTAGE MADE IN FRANCE 130 gr CYCLO SIMPLEX HURET $125.00 Time Remaining: 19d 23h 13m Buy It Now for only: $125.00 |
 Vintage Huret Svelto Derailleurs Group Set Used for Gitane Peugeot Raleigh bikes $95.99 Time Remaining: 17d 9h 55m Buy It Now for only: $95.99 |
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It can be confusing at first when you get a new bike and have a multitude of gears to choose from. To get better at shifting you have understand why you need to have a shifter and gears in the first place. The reason why you need one has to do with efficient use of energy. The most efficient way to power a bicycle is to be pedaling at least one revolution of the pedals a second. If you are in better shape then the ideal speed for you to pedal is actually much faster. The recommended speed for a racer is around 90 revolutions per minute. Thus gears have to do with efficiency. If you are in too high of a gear you will be pedaling too much to be ideal. If you are in too low of a gear you will be pedaling to slow to be ideal.
The gears on a bike are made up a chain, two or three sprockets in the front with the crank and then in the rear somewhere between 5 and 9 gears in the back. The way they determine the number of gears a bike has is by multiplying the total number of gears in the front by the total number in the back. So for example a ten speed bike has 2 gears in the front and 5 in the back to choose from, and so 2*5 equals ten.
On the rear of the bike there is something called dérailleurs. There is one up by the cranks and one in the rear. These are like the clutch and gearbox of the bike. They work to derail the chain and force it to jump from one gear to another so you can change gear. The way the shifting works is the rider shifts gears up in the front. That moves a cable that runs to the dérailleur, which forces the dérailleur to push against the chain. The chain is shoved from one side to the other and moves up or down the gears.
Read more about how to shift bikes and other biking resources at the best bike site on the internet.