Rotax 125 MAX DD2 Einbauhinweise Und Betriebsanleitung Seite 84

Does the engine reach 12.500 r.p.m in 2
end of the longest straight?
IF YES:
IF NO:
If these gear ratios are still not sufficient, try the next shorter or next longer gear ratio.
Note:
Note:
Gear ratio 1st gear
Number of teeth of
primary drive gear
gear ratio of 1st gear (cannot be changed)
Seite/page 84/100
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Operating Instructions 125 MAX DD2
Chose the next longer gear ratio (36/61 equivalent to 12/87 in 1
nd
in 2 gear).
Chose the next shorter gear ratio (34/63 equivalent to 11/87 in 1
nd
in 2 gear).
When using short gear ratios it may happen that the response behaviour of the
st
engine in 1 gear is aggressive and the vehicle handling becomes difficult. For a
good lap time often a longer gear ratio is helpful to achieve reasonable performance
behaviour.
To help with the choice of adequate gear ratios you will find below two Charts in
which the traditional gear ratios and the top speeds in [kmh] that can be reached in
the respective gear at an engine speed of 12.500 r.p.m.
Number of teeth of
secondary drive gear
32 65
33 64
34 63
35 62
36 61
37 60
38 59
manuals search engine
Traditional gear (at 12.500 r.p.m. and wheel
ratio diameter
gear ratio (in sprocket sizes)
8,65 10 to 87
8,26 11 to 91
7,89 11 to 87
7,55 12 to 90
7,22 12 to 87
6,91 12 to 83
6,61 12 to 80
4,26
nd
gear at the
st
gear and 14/76
st
gear and 14/83
theoretical max. speed
(in km/h / mile/h)
870 mm
/ 34,25 in.)
75 / 47
79 / 49
83 / 52
86 / 53
90 / 56
94 / 58
99 / 62
Ausgabe/edition 01/2006