Snowmobile Arctic Cat (2008 year). Manual - part 13
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1
Chain Case Performance Calibrations
The following tables should be used as a guide only.
RPM x Ratio x 0.0225 x 1.12 = MPH
RPM x Ratio x 0.0213 x 1.12 = MPH
Drive Sprocket Chain Case Performance Specifications*
RPM (Engine)
8-Tooth
Sprockets
Ratio
Chain Pitch
7400
7800
8000
8200
8700
18/44
0.409
72
76.3
80.4
82.5
84.5
86.6
19/44
0.432
74
80.5
84.9
87.1
89.2
91.4
19/43
0.442
72
82.4
86.9
89.1
91.3
93.5
20/44
0.455
74
84.8
89.3
91.6
93.9
96.2
19/41
0.463
72
86.4
91.1
93.4
95.8
98.1
20/40
0.500
72
93.2
98.3
100.8
103.3
105.8
22/42
0.524
74
97.7
103.0
105.6
108.2
110.9
22/41
0.537
74
100.1
105.5
108.2
110.9
113.6
21/39
0.538
72
100.4
105.8
108.6
111.3
114.0
23/40
0.575
72
107.2
113.0
115.9
118.8
121.7
24/40
0.600
74
111.9
117.9
121.0
124.0
127.0
19/40
0.475
70
88.6
93.4
95.8
98.2
100.5
Drive Sprocket Chain Case Performance Specifications*
RPM (Engine)
9-Tooth
Sprockets
Ratio
Chain Pitch
6000
7000
8000
9000
10,000
24/35
0.686
70
98.2
114.6
130.9
147.3
163.7
22/33
0.667
68
95.5
111.4
127.3
143.2
159.1
21/33
0.636
68
91.0
106.2
121.4
136.6
151.7
24/39
0.615
72
88.0
102.7
117.4
132.0
146.7
22/37
0.595
70
85.2
99.4
113.6
127.7
141.9
20/35
0.571
68
81.7
95.4
109.0
122.6
136.2
21/37
0.568
70
81.3
94.9
108.4
122.0
135.5
19/35
0.543
68
77.7
90.7
103.6
116.6
129.5
20/39
0.513
70
73.4
85.7
97.9
110.1
122.4
21/41
0.512
72
73.3
85.5
97.7
109.9
122.1
20/41
0.488
72
69.9
81.5
93.1
104.8
116.4
18/37
0.486
68
69.6
81.2
92.8
104.3
115.9
16/33
0.484
66
69.3
80.8
92.4
103.9
115.5
19/41
0.463
72
66.3
77.3
88.4
99.4
110.5
18/39
0.461
70
66.0
77.0
88.0
99.0
110.0
17/37
0.459
68
65.7
76.6
87.6
98.5
109.5
19/59
0.487
74
69.7
81.3
92.9
104.6
116.2
19/40
0.475
70
68.0
79.3
90.7
102.0
113.3
22/40
0.550
72
78.7
91.8
105.0
118.1
131.2
22/41
0.536
74
76.7
89.5
102.3
115.1
127.9
23/40
0.575
72
82.3
96.0
109.7
123.5
137.2
23/44
0.522
74
74.7
87.2
99.6
112.1
124.5
26/41
0.634
74
90.7
105.9
121.0
136.1
151.2