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Gearing

Last Updated (Saturday, 10 May 2008 21:57) Written by John Daley Saturday, 10 May 2008 21:55

Handy Guide to Gear Ratios Takes the Guesswork out of  Sprocket Selection       Gearbox Sprocket   13 14 15 16 17 18 19 20 35 2.69 2.50 2.33 2.19 2.06 1.94 1.84 1.75 36 2.77 2.57 2.40 2.25 2.12 2.00 1.89 1.80 37 2.85 2.64 2.47 2.31 2.18 2.06 1.95 1.85 38 2.92 2.71 2.53 2.38 2.24 2.11 2.00 1.90 39 3.00 2.79 2.60 2.44 2.29 2.17 2.05 1.95 40 3.08 2.86 2.67 2.50 2.35 2.22 2.11 2.00 41 3.15 2.93 2.73 2.56 2.41 2.28 2.16 2.05 42 3.23 3.00 2.80 2.63 2.47 2.33 2.21 2.10 43 3.31 3.07 2.87 2.69 2.53 2.39 2.26 2.15 44 3.38 3.14 2.93 2.75 2.59 2.44 2.32 2.20 45 3.46 3.21 3.00 2.81 2.65 2.50 2.37 2.25   Final Drive Ratios     Gearbox Sprocket   13 14 15 16 17 18 19 20 35 371 400 429 457 486 514 543 571 36 361 389 417 444 472 500 528 556 37 351 378 405 432 459 486 514 541 38 342 368 395 421 447 474 500 526 39 333 359 385 410 436 462 487 513 40 325 350 375 400 425 450 475 500 41 317 341 366 390 415 439 463 488 42 310 333 357 381 405 429 452 476 43 302 326 349 372 395 419 442 465 44 295 318 341 364 386 409 432 455 45 289 311 333 356 378 400 422 444   Rear Wheel RPM per 1000 RPM Front Sprocket