Ford 3230 Operator's Manual page 115

- - - - - - - - - - - - - - - S E C T I O N C
ROAD SPEEDS (Constant Mesh
Transmi~ion
- continued)
The following charts show the road speeds in MPH and km/h for 4630 and 5030 tractors with Constant
Mesh transmission, fitted with 12.4- 32 or 14.9 - 28 rear tires (these two tire sizes have the same rolling
radius). If the rear tires of your tractor are of a different size, multiply the road speeds shown in the printed
charts by the following conversion factors:
Tire size: 12.4 - 28 12.4 - 36 13.6 - 28 13.6 - 36 14.9 - 24 14..9 - 30
Faetor: 0.922 1.078 0.953 1.117 0.922 1.039
Tire sl7.e:
Factor:
16.9-24
0.969
16.9-30
1.086
16.9-34
1.164
18A-26
1.047
18A-30
1.125
NOTE: For your convenience, the right-hand side of each chart has been left blank._so,.shouldyour
tractor have rear tires of a different size, you may insert your own calculated
Foad
speeds.
Ford 4630 and 5030 with Constant Mesh transmission and 12.4 - 32 or 14.9 - 28 rear tires
Miles per hour Miles per hour
Engine Speed (rev/min) Engine Speed (rev/min)
Gear
1200
1800
2200 1200 1800
2200
1
0.79
1.18
1.45
2
0.98 1.48 1.80
3
1.73 2.59 3.17
4
2.35 3.52 4.31
4 2.81
4.23 5.16
6
3.52 5.28
6.44
7 6.17
9.25
11.31
8 8.40
12.60
15.40
Low Reverse 1.13 1.70 2.08
High
Rev~rse
4.05 6.08 7.43
Ford 4630 and 5030 with Constant Mesh transmission and 12.4 - 32 or 14.9 - 28 rear tires
Kilometers per hour Kilometers per hour
Engine Speed (rev/min) Engine Speed (rev/min)
Gear 1200 1800
2200
1200
1800 2200
1
1.27 1.90
2.33
2
1.58 2.38 2.90
3
2.78
4;17 5.lO
4
3.78 5.67
6.94
4
4.53
6.80
8..il
6
5.66 8.49
10.37
7
9.93 14.89
18.20
8
13.52 20.28
24.78
Low Reverse
1.82
2.74
3.34
High Reverse
6.52 9.78
11.95
17