DTM #3- Shifting techniques Flashcards
Gear slip is the difference between ratios of gears in the transmission expressed in RPMs, usually 90% of peak engine speed
True
If manual transmission: Apparatus should be in neutral and foot off the clutch when stopped at a traffic signal
True
When driving streets, choose a gear that will keep the RPMs 200-300 below 90% of peak engine speed
True
When coming to a full stop, depressed clutch with the RPMs near idle speed and the engine is on verge of lugging. This takes full advantage of engine compression for stopping
True
Used walk/don’t walk signs as clue of when to put into gear when they stop blinking you have about 5 to 6 seconds before light turns green
True
Don’t coast out of gear
True
When in traffic, put transmission in the highest gear that allows you to keep up with traffic and still have some power left
True
When cruising, choose a gear that will cruise the engine at 200 to 300 rpm’s below 90% of the peak engine speed. This reduces:
Engine wear
Horsepower loss due to fan kicking in and other accessories
Noise
Fuel consumption
When descending or a sending a grade shift to a lower gear. This keeps adequate driving tower. Driver can keep control of apparatus
Caution: do not let rear wheels drive engine. Maintain proper roast beef for gear you are in
When turning a corner, usually best to shift to lower gear before turn or intersection
True
Gears split =
90% peak engine speed
Don’t coast out of gear
Out of control
Never let wheel drive the engine
Control your speed
Gear split is the difference between action of gears in the transmission expressed in______
RPMs
Most important of all driving operation is gearshifting
Gear shifting
Gear split=
90% of peak engine speed
Do not operate transmission when transit temps are higher than
250°F
When the walk/don’t walk signs stop blinking you have ____ to ____ sec before the light turns green
5 to 6
When driving the streets, choose a gear that will keep the RPMs ________ below ____ of the peak engine speed
200-300 rpms
90%
The two purposes of the clutch are:
To slip to get apparatus moving from 0 mph and disconnect engine from drivetrain while shifting
Retarder operation is only effective when the RPMs are higher than _____
1500 rpm’s
Do not operate trans when times are above
250°F
Gears plate is the difference between ratios of gears in the transmission expressed as
RPMs
Never downshift to the next lower gear when traveling faster than the engine can move Rig in that gear
True
Keep automatic transmission ___ to___ RPMs below 90% peak speed
200-300rms
Gear shifting is probably the most important driving operation
True
When driving strive for______
Smoothness
Double clutch timeing varies according to time it takes to adjust ________
Engine speed
When in traffic, put transmission in highest gear that allows you to keep up with traffic and still have some ________
Power left
The clutch disconnects the engine from the drive train when ________
Shifting gears
_________ provides the greatest tractive advantage
Reverse
Under no circumstances allow your apparatus to coast in _____
Neutral
When starting to move on a severe grade, accelerate rpm’s until converter is in_______
Stall condition
Downshifting can be faster than a up shifting
True
Automatic transmissions have greatest tractive advantage in what gear?
Reverse
When changing from a forward to a reverse gear, you shall __________.
Come to a complete stop
Automatic transmission will last longer if they are _________as a clutchless manual transmission
Pre-shifted
Never rest your foot on the clutch, don’t coast out of gear
True
Shifting of gears and heavier weather should always be done by using______
Double-clutch
