How fast can a B6 or B12 go?

[Red01]

These charts assume stock gearing, stock tire size and the ability to pull redline in top gear.

For the 600 (and I'm guessing the 650 is the same):

This is for the 600, tire size will make a difference

INPUTS GSF600 Bandit Gearing Calculator
Front Sprocket (Teeth) 15
Rear Sprocket (Teeth) 48
Final Ratio 3.20
Primary Ratio 1.744
Rear Tire Diameter (inches) 24.79
Tire Circumference (Inches) 77.88
GEAR 1 2 3 4 5 6
Internal Gear Ratio 3.083 2.062 1.647 1.400 1.227 1.095
Overall Gear Ratio 17.206 11.508 9.192 7.813 6.848 6.111
RPM MPH MPH MPH MPH MPH MPH
1,500 6.4 9.6 12.0 14.2 16.2 18.1
2,000 8.6 12.8 16.0 18.9 21.5 24.1
2,500 10.7 16.0 20.1 23.6 26.9 30.2
3,000 12.9 19.2 24.1 28.3 32.3 36.2
3,500 15.0 22.4 28.1 33.0 37.7 42.2
4,000 17.1 25.6 32.1 37.8 43.1 48.3
4,500 19.3 28.8 36.1 42.5 48.5 54.3
5,000 21.4 32.0 40.1 47.2 53.9 60.3
5,500 23.6 35.2 44.1 51.9 59.2 66.4
6,000 25.7 38.5 48.1 56.6 64.6 72.4
6,500 27.9 41.7 52.2 61.4 70.0 78.4
7,000 30.0 44.9 56.2 66.1 75.4 84.5
7,100 30.4 45.5 57.0 67.0 76.5 85.7
7,200 30.9 46.1 57.8 68.0 77.5 86.9
7,300 31.3 46.8 58.6 68.9 78.6 88.1
7,400 31.7 47.4 59.4 69.9 79.7 89.3
7,500 32.1 48.1 60.2 70.8 80.8 90.5
7,600 32.6 48.7 61.0 71.7 81.9 91.7
7,700 33.0 49.3 61.8 72.7 82.9 92.9
7,800 33.4 50.0 62.6 73.6 84.0 94.1
7,900 33.9 50.6 63.4 74.6 85.1 95.3
8,000 34.3 51.3 64.2 75.5 86.2 96.5
8,100 34.7 51.9 65.0 76.5 87.2 97.8
8,200 35.1 52.6 65.8 77.4 88.3 99.0
8,300 35.6 53.2 66.6 78.3 89.4 100.2
8,400 36.0 53.8 67.4 79.3 90.5 101.4
8,500 36.4 54.5 68.2 80.2 91.5 102.6
8,600 36.9 55.1 69.0 81.2 92.6 103.8
8,700 37.3 55.8 69.8 82.1 93.7 105.0
8,800 37.7 56.4 70.6 83.1 94.8 106.2
8,900 38.1 57.0 71.4 84.0 95.9 107.4
9,000 38.6 57.7 72.2 85.0 96.9 108.6
9,100 39.0 58.3 73.0 85.9 98.0 109.8
9,200 39.4 59.0 73.8 86.8 99.1 111.0
9,300 39.9 59.6 74.6 87.8 100.2 112.2
9,400 40.3 60.2 75.4 88.7 101.2 113.4
9,500 40.7 60.9 76.2 89.7 102.3 114.7
9,600 41.1 61.5 77.0 90.6 103.4 115.9
9,700 41.6 62.2 77.8 91.6 104.5 117.1
9,800 42.0 62.8 78.6 92.5 105.5 118.3
9,900 42.4 63.4 79.4 93.4 106.6 119.5
10,000 42.9 64.1 80.2 94.4 107.7 120.7
10,100 43.3 64.7 81.0 95.3 108.8 121.9
10,200 43.7 65.4 81.8 96.3 109.9 123.1
10,300 44.2 66.0 82.6 97.2 110.9 124.3
10,400 44.6 66.7 83.4 98.2 112.0 125.5
10,500 45.0 67.3 84.2 99.1 113.1 126.7
10,600 45.4 67.9 85.1 100.1 114.2 127.9
10,700 45.9 68.6 85.9 101.0 115.2 129.1
10,800 46.3 69.2 86.7 101.9 116.3 130.3
10,900 46.7 69.9 87.5 102.9 117.4 131.5
11,000 47.2 70.5 88.3 103.8 118.5 132.8
11,100 47.6 71.1 89.1 104.8 119.5 134.0

For the 1200:

This is stock gearing for the Bandit 1200
INPUTS 1998 GSF1200S Bandit Gearing Calculator
Front Sprocket (Teeth) 15
Rear Sprocket (Teeth) 45
Final Ratio 3.00
Primary Ratio 1.565
Rear Tire Diameter (inches) 24.79
Tire Circumference (Inches) 77.88
GEAR 1 2 3 4 5
Internal Gear Ratio 2.384 1.631 1.250 1.045 0.913
Overall Gear Ratio 11.193 7.658 5.869 4.906 4.287
RPM MPH MPH MPH MPH MPH
1,500 9.9 14.4 18.8 22.5 25.8
2,000 13.2 19.3 25.1 30.1 34.4
2,500 16.5 24.1 31.4 37.6 43.0
3,000 19.8 28.9 37.7 45.1 51.6
3,500 23.1 33.7 44.0 52.6 60.2
4,000 26.4 38.5 50.3 60.1 68.8
4,500 29.7 43.3 56.5 67.6 77.4
5,000 32.9 48.2 62.8 75.2 86.0
5,500 36.2 53.0 69.1 82.7 94.6
6,000 39.5 57.8 75.4 90.2 103.2
6,500 42.8 62.6 81.7 97.7 111.8
7,000 46.1 67.4 88.0 105.2 120.4
7,100 46.8 68.4 89.2 106.7 122.2
7,200 47.4 69.3 90.5 108.2 123.9
7,300 48.1 70.3 91.7 109.7 125.6
7,400 48.8 71.3 93.0 111.2 127.3
7,500 49.4 72.2 94.2 112.7 129.0
7,600 50.1 73.2 95.5 114.2 130.8
7,700 50.7 74.2 96.8 115.7 132.5
7,800 51.4 75.1 98.0 117.2 134.2
7,900 52.1 76.1 99.3 118.8 135.9
8,000 52.7 77.0 100.5 120.3 137.6
8,100 53.4 78.0 101.8 121.8 139.4
8,200 54.0 79.0 103.0 123.3 141.1
8,300 54.7 79.9 104.3 124.8 142.8
8,400 55.3 80.9 105.6 126.3 144.5
8,500 56.0 81.9 106.8 127.8 146.2
8,600 56.7 82.8 108.1 129.3 148.0
8,700 57.3 83.8 109.3 130.8 149.7
8,800 58.0 84.8 110.6 132.3 151.4
8,900 58.6 85.7 111.8 133.8 153.1
9,000 59.3 86.7 113.1 135.3 154.8
9,100 60.0 87.6 114.4 136.8 156.6
9,200 60.6 88.6 115.6 138.3 158.3
9,300 61.3 89.6 116.9 139.8 160.0
9,400 61.9 90.5 118.1 141.3 161.7
9,500 62.6 91.5 119.4 142.8 163.4
9,600 63.3 92.5 120.6 144.3 165.2
9,700 63.9 93.4 121.9 145.8 166.9
9,800 64.6 94.4 123.2 147.3 168.6
9,900 65.2 95.3 124.4 148.8 170.3
10,000 65.9 96.3 125.7 150.3 172.1
10,100 66.5 97.3 126.9 151.8 173.8
10,200 67.2 98.2 128.2 153.3 175.5
10,300 67.9 99.2 129.4 154.8 177.2
10,400 68.5 100.2 130.7 156.3 178.9
10,500 69.2 101.1 131.9 157.8 180.7

Go to this site for the tire size calculater.

http://www.nightrider.com/biketech/calc_speed_rpm.htm

The gear ratio calculater is one I downloaded a few years ago, and modified it for the bandits. It is just an excel file.