Gear Ratios and Speeds

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This spreadsheet was originally started by Sean Hollingsworth of Reno, NV Originally started in on Saturday, August 11, 2001 12:20:49 AM, and growing a bit since. Very simple. Very easy to modify. Very easy to understand.

I constructed this spreadsheet so that simple numbers can be changed to see how much effect they have on the final speed of whatever motorcycle in any given gear. Orignailly built because I had to know the truth behind the numbers. On the first Tab "CR500R" I highlighted the numbers in Yellow that can be changed One of the numbers that may be changed is the Distance covered by one full rotation of the rear tire. If you are bright enough to Have Excel, then you're bright enough to understand this spreadsheet. Distrubute freely, but please keep this Worksheet intact :) Sean Hollingsworth dirtbikes@msn.com Monday, 27 February, 2006 07:58:18 PM

Gearing and Speeds140 130

120 110 100Speed in MPH 90 80

1st Gear

2nd Gear3rd Gear

4th Gear5th Gear1999 CR500R Sprockets Front: 15 Rear: 48 Ratio: 3.2000

70 60 5040 30

Stock Front: 14 Rear: 49

20 10 0 2000 3000 5000 6000 90000 1000 4000 7000 8000

redline ~8000rpm based on max s achieved in DirtBike Magazine Tes See April 1999 issue, pages 41 and Currently Front: 15 Rear: 48

Engine RPM

Gearing and Speeds XR600R140 130 120 110 100 Speed in MPH 901st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear2000 XR600R Sprockets Front: 14 Rear: 45 Ratio: 3.4286

8070 60 50 40 30 20 10 0

Stock Front: 14 Rear: 45

Electronic Redline ~7550rpm Currently Front: 14 Rear: 45

8000

0

1000

2000

3000

4000

5000

6000

7000

Engine RPM

9000

Gearing and Speeds 1995 XR650L140 130 120 110 100 90 801st Gear 2nd Gear3rd Gear

4th Gear 5th Gear

Speed in MPH

70 60 5040 30 20 10 0

3000

8000

1000

2000

4000

5000

6000

7000

Engine RPM

9000

0

Gear Ratios and Speeds XR650R Primary Reduction Sprockets 14 48 1.6510 Final Reduction 3.4286 Tire Circumfrance (Inches) 83.25221 diamerer*Pi Engine RPM 0

Tire Diameter (Inches) 26.50

Ratios 3.083 1st Gear 2.125 2nd Gear 1.666 3rd Gear 1.333 4th Gear 1.115 5th Gear

500 2.26 3.28 4.18 5.22 6.25

Diameter*12 Ft./rot. x 5280

Distance Traveled per rotation of the rear tire Circumferance/12inches = 6.937683777 feet/rotation = 0.001313955 Miles/rotation

(((G$6/$B$7)/$E7)/$C$7)*$C$19*60

Electronic Redline around 8200 RPM ??

Gearing and S140 130

120110 100 Speed in MPH 90 80 70 60 50

1st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear

Speed in 10 0 0 20 30 40 50

10002000 3000

1000 4.52 6.55 8.36 10.45 12.49

1500 6.78 9.83 12.54 15.67 18.74

2000 9.03 13.11 16.72 20.90 24.98

2500 11.29 16.39 20.90 26.12 31.23

3000 13.55 19.66 25.08 31.34 37.47

3500 15.81 22.94 29.26 36.57 43.72

4000 18.07 26.22 33.44 41.79 49.96

4500 20.33 29.49 37.62 47.02 56.21

5000 22.59 32.77 41.80 52.24 62.45

20.10229 30.15344 40.20458 50.25573 60.30688 70.35802 80.40917 90.46031 100.5115

Gearing and Speeds 2000 XR650R

3000 4000 5000 Engine RPM

60007000 8000 9000

5500 24.85 36.05 45.98 57.47 68.70

6000 27.10 39.32 50.16 62.69 74.95

6500 29.36 42.60 54.34 67.91 81.19

7000 31.62 45.88 58.52 73.14 87.44

7500 33.88 49.16 62.70 78.36 93.68

8000 36.14 52.43 66.88 83.59 99.93

8500 38.40 55.71 71.06 88.81 106.17

9000 40.66 58.99 75.24 94.03 112.42

9500 42.92 62.26 79.42 99.26 118.66

Vltszm 1.609344 110.5626 120.6138 130.6649 140.716 150.7672 160.8183 170.8695 180.9206 190.9718

2000 XR650R Sprockets Front: 14 Rear: 48 Ratio: 3.4286

Stock Front: 14 Rear: 48

Electronic Redline 8200rpm Normal gear-up Front: 15 Rear: 45

10000 45.17 65.54 83.60 104.48 124.91

10500 47.43 68.82 87.78 109.71 131.16

11000 49.69 72.10 91.96 114.93 137.40

201.0229 211.0741 221.1252

Gearing and Speeds 1998 ATK605ES140 130 120 110 100 Speed in MPH 90 80 70 60 50 40 30 20 10 0 01st Gear 2nd Gear 3rd Gear4th Gear

5th Gear

3000

8000

1000

2000

4000

5000

6000

7000

Engine RPM

9000

2.8750

Gearing and Speeds 1998 ATK605ES140 130 120110 1001st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear1998 ATK605ES Sprockets Front: 15 Rear: 45 Ratio: 3.0000 ~ 17/42 16 38 2.3750

Speed in MPH

90 80

70 60 50 4030 20 10 0 0

Stock Front: 15 Rear: 45 Ratio: 3.0000 redline 7000 RPM based on Max speed in 3rd gear on level ground. Currently Front: 16 Rear: 46 2.8750

1000

3000

4000

6000

7000

Engine RPM

9000

2000

5000

8000

Gear Ratios and Speeds XR400R Primary Reduction Sprockets 15 45 2.9000 Final Reduction 3.0000 Tire Circumfrance (Inches) 83.25221 diamerer*Pi Engine RPM 0

Tire Diameter (Inches) 26.50

Ratios 2.670 1st Gear 1.650 2nd Gear 1.250 3rd Gear 1.000 4th Gear 0.840 5th Gear

500 1.70 2.75 3.62 4.53 5.39

Diameter*12 Ft./rot. x 5280

Distance Traveled per rotation of the rear tire Circumferance/12inches = 6.937683777 feet/rotation = 0.001313955 Miles/rotation

Gearing a140

130(((G$6/$B$7)/$E7)/$C$7)*$C$19*60

120 110 100 Speed in MPH 90 80 70 60 50 40 30

1st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear

2010 0 1000 2000 0

1000 2000

1000 3.39 5.49 7.25 9.06 10.79

1500 5.09 8.24 10.87 13.59 16.18

2000 6.79 10.98 14.50 18.12 21.58

2500 8.48 13.73 18.12 22.65 26.97

3000 10.18 16.48 21.75 27.19 32.36

3500 11.88 19.22 25.37 31.72 37.76

4000 13.58 21.97 29.00 36.25 43.15

4500 15.27 24.71 32.62 40.78 48.55

5000 16.97 27.46 36.25 45.31 53.94

Gearing and Speeds 1997 XR400R

1st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear

4000

9000

2000

3000

5000

6000

7000

8000

2000 3000

40005000 6000 7000 8000

Engine RPM

9000

5500 18.67 30.21 39.87 49.84 59.33

6000 20.36 32.95 43.50 54.37 64.73

6500 22.06 35.70 47.12 58.90 70.12

7000 23.76 38.44 50.75 63.43 75.51

7500 25.45 41.19 54.37 67.96 80.91

8000 27.15 43.94 58.00 72.49 86.30

8500 28.85 46.68 61.62 77.02 91.70

9000 30.55 49.43 65.24 81.56 97.09

9500 32.24 52.17 68.87 86.09 102.48

1997 XR400R Sprockets Front: 15 Rear: 45 Ratio: 3.0000

Stock Front: 15 Rear: 45 9600 RPM Redline was confirmed by a Dirtrider Magazine test in 1996. Currently Front: 15 Rear: 45

10000 33.94 54.92 72.49 90.62 107.88

10500 35.64 57.67 76.12 95.15 113.27

11000 37.33 60.41 79.74 99.68 118.67

Chart

Nothing was done with this page. RPM 15,000 14,500 14,000 13,500 13,000 12,500 12,000 11,500 11,000 10,500 10,000 9,500 9,000 8,500 8,000 7,500 7,000 6,500 6,000 5,500 5,000 4,500 4,000 3,500 3,000 2,500 2,000 1,500 1,000 500 0 0

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