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CHECKS OF FOWARD SPEEDS
FORWARD SPEED RESEARCH IN RELATION WITH :
- An engaged gear.
- A P.T.O. RPM rated at 540 RPM.
FIRST CASE = Your tractor is equiped with standard wheels.
You have got its instructions booklet.
In that booklet, the foward speed is given for an engine RPM
corresponding to 540 RPM at the PTO. Then choose the closer gear
from the speed you want to work with in that range.
ENGINE RATE : 2000 RPM
PTO RPM : 540 RPM
GEAR ENGAGED : 5 th
WORKING SPEED : 5 km/h or 3 mph
SECOND CASE = Your wheels are not standard.
You don’t have the instructions booklet
of your tractor.
YOU MUST PROCEED TO A TEST RUN IN THE FIELD
1-Measure a 200 metres run, preferably on the land you will treat.
2-Engage gear to be run at example : 5th gear) after having set engine
for at the 540 RPM at the PTO.
3 - Time out the run over the 200 metres.
EXAMPLE : 2 minutes and 24 seconds
or 144 seconds
Speed on km/h : 200 x 3600
--------------- = 5000 metres/h or 5 km/h
144
Km/h 2 2,5 3 3,5 4 4,5 5 5,5 6
Seconds 360 288 240 206 180 160 144 131 120
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