Multiquip SP6065 User Manual
Page 21
21
Typically, however, the ratios are not used to design a level of torque; they are
used to create a saw with the optimum blade speed (blade Shaft RPM) for you.
The major factors are:
♦
diameter of blade(s) you commonly use, and
♦
cutting conditions you work under
We can also tailor the Blade Shaft RPM (blade speed) by adjusting the “primary”
ratio between the engine and the Blade Shaft. By selecting a Blade Shaft sheave
and Engine sheave, a multitude of additional ratios (and Blade Shaft speeds) are
possible. The following Sheave sets are available as standard kits:
Engine
Sheave
Blade Shaft
Sheave
Engine
Spacer*
Ratio
Blade
Shaft
RPM
Engine
RPM
MERCURY
Kit #
3.6
4.75
.75
1.32 : 1
2121
2800
18600
3.6
5.0
.5
1.38 : 1
2028
2800
18601
3.6
5.3
.375
1.47 : 1
1904
2800
18602
4.1
4.2
.75
1.02 : 1
2735
2800
18608
4.1
4.4
.5
1.07 : 1
2609
2800
18607
4.1
4.5
.5
1.10 : 1
2545
2800
18604
4.1
4.75
.375
1.16 : 1
2413
2800
18603
4.1
5.0
.375
1.22 : 1
2295
2800
18605