First of all, a lot of my friends would ask: Your gasoline engine
oil needle to open a number of laps? - In fact, this is an error, model car
gasoline engine oil needle is not a \ "standard \" position, the fuel
brand, then the temperature / humidity, oil needle set are not necessarily the
same.
If I have an experience of value, Well, the main oil needle
clockwise Off is coming to an end, and counterclockwise to open 3.5 to 4 laps,
vice Clockwise Off to the head after 2.5 to 3 turns counterclockwise to open.
This experience may not be applicable to you, but if you really did not grasp,
is located in such a way look at it .......
Meet with needle:
The oil needle summarized sentence: low speed needle (the deputy oil
needle) responsible for car accelerating from rest to the reaction speed, the
more screwed in the faster; responsible for the high speed needle (main oil
needle) the maximum speed of the car, the more screwed in The speed of the
faster; idle screw is responsible for the car idling, the more screwed in
idling the higher.
Main humidity needle affects throttle linearity, but also with the
low speed needle related, novices do not move it.
Oil needle adjustment method is as follows:
1, the temperature is ready and coarse:
Ensure that the oil needle at the factory state, if you have been
mixed up, put the main Clockwise Off to the head, open to 4.5 turns
counterclockwise, Deputy Clockwise Off is coming to an end, to open 3.5 turns
counterclockwise :)
Start car, so the car from the air, this time a little throttle, the
engine running enough temperature (about 15-25 seconds)
Until the engine temperature reaches the
work needs to start tuning.
2, the main oil-pin coarse:
Fierce reminder a few throttle (valve fully open), listening to the
sound, full throttle, the gasoline engine sound is very sharp, dry, seems to
have strength, but do not increase the feeling, you amplify the main oil-pin
(inverse clockwise - the oil-rich)
Oil needle circle regarded as 60 minutes, each tuned amplitude for 5
minutes, and tune to the time until the accelerator is fully opened, the engine
at top speed, the sound is strong and quite sharp.
3, the main oil-pin fine-tuning - listening
Resolution bit:
Good set of gasoline engine sound is completely commanded listen to
your fingers, not your fingers move, and also stick to their voice
Then full throttle, and then immediately return to the idle
position, listening to the sound of the engine.
Sound should be so: the tone is very high speed when, immediately
return to the idle time is very calm and coherent, absolutely no \ "tone
classification \"
High-speed return to idle when the normal tone: wowowowowo .....
dadadada
High-speed return to idle when the
incorrect tone: wowowowowo ..... ooooo ........ dadadada
The orange above idle stage \ "o \", \ "tone \"
in high-speed landing \ "idle \" process, there is a do not listen to
the finger command of tone, this tone is the symbol of the "chasing oil.
"Chasing oil," said the engine by
the high-speed to the idle process, the oil supply is inadequate - so we hear
the engine tone is inconsistent, the middle seems to have refused to slow down
the pitch, even the engine sustained high-speed to get down .......
Encountered "to chase oil" we must enlarge the main oil
needle some (counter-clockwise - the oil-rich) until it meets the normal tone,
no do not listen to the finger command of middle tones.
Purposes of the tuning of the main oil-pin is the engine oil needle
closing (clockwise) to close to "recover oil," the point (that is the
limit of the engine), try squeezing engine a power and speed
4, set idle
First, take the air filter, remote throttle control to push the
brake, the valve clearance should be 1 mm, if not, adjust the idle speed screw.
Next, do not touch the remote control throttle, steering gear return
to idling state, observe the valve clearance should still be about 1 mm. If
not, adjust the position of the midpoint of the steering gear of the remote
control.
Immediately returned to idle to full
throttle, if the engine immediately turn off, to increase the idle speed (idle
screw clockwise to increase the idle speed).
The idle valve clearance generally not
greater than one millimeter too much. If your valve clearance has been much
greater than 1 mm, the rc gas engine is still very unstable easily fire death,
attempting then to check, to see if the fuel quality problem. If the idle speed
is too high (the wheels began to turn, or the idle high pitch), you properly
reduced idling or sustained over time, the clutch is likely to burn.
5, the vice needle adjustments:
Vice needle called the low speed needle, by
definition, which is in charge of the engine of the state in the low-speed
state. Want to play the rise of the friends need to be aware of the low speed
needle adjustment :)
Full throttle, then back to idle, listening
to idle when the pitch is too low (if there is phlegm in the throat), but when
you suddenly accelerate when the throttle response \ "slow \", the
Vice the oil needle decreases (clockwise) until tuned to rapid throttle
response, acceleration linear no \ "delay \" feeling. Deputy needle
closing small will make to start faster, but too small, the same will be
chasing the oil situation, once tuned small needle, chasing oil, you can zoom
Deputy needle (counterclockwise ).
Relatively simple but practical the vice
oil needle adjust the way: the vice oil needle shut open to about 3.5 turns,
then the car, briefly fierce refueling see cars start fast offensive,
objectionable words on 5 minutes 5 minutes to closing a small vice oil needle,
until the most powerful vehicle to accelerate from rest (do not be blind
pursuit of violence lead to "chasing oil).
6, the running state of the overall
fine-tuning:
Stationary state regulation after, you also
need careful adjustment hierarch oil needle on the track.
First tank full of fuel, and high-speed
walking laps of the track to see whether enough speed.
A maximum speed of closing small main oil
needle (clockwise - Each tune "3 minutes" amplitude), you can test
every 1-2 laps and then walk again tuned again - until the engine play a
desired speed, and there is no overheat.
Check the temperature of the gasoline
engine, the more professional approach is to use the model-specific infrared
thermometer:
Of course, there are simple and cheap check
the rc engine temperature: drop a little water on top of the engine cooling -
water points within 3-5 seconds evaporation is a normal phenomenon, such as
water points immediately evaporate, this is overheating, now the main oil pin.
the Big 5 minutes turn (counterclockwise) and then walk a few laps, again check
engine temperature is back to normal ... it will be very dangerous Oh ...
Of course, using the method of water
droplets generally only suitable for experienced veteran, I have not seen the
first touch engine novice proper use of water droplets law, so if you are new
novice, or buy a thermometer it :)
Proper engine tune, the engine should be
generated at a high speed when a strong high-frequency sounds, and the obvious
thin smoke should be discharged from the exhaust nozzle.
Several easy to normal novice worries:
1, the rc engine turn up the intermittent
sound of some metal collision: Ignore it generally is the voice of the clutch
and gear when inaudible
2, the rc engine is a fuel on the fire
death: General Deputy needle too rich oil received little vice needle like
3 idle for a few minutes, touched on the
fire death: normal, because idling case poor discharge of oil, slow throttle,
high-speed operation ejected plot engine oil can
4, the resumption of oil when the engine
speed is not down, as if in singing Diaosang Zi: see lean?
A brake on the dead fire: Make sure the
brake case, whether the damper remain about 1MM gap. If the damper shut the
course will turn off, if the damper is too large, the clutch has combined brake
equal to forcibly stopped the engine, of course, will turn off.
6, Rc engine heat succeeded not touch: the
engine is originally should heat succeeded are not touched.
Simply start vain:
Ignition electricity? - Fire head screwed
down connected to the igniter, attempting son should be very bright, if not
bright enough, charging it!
Oil into the carburetor it? - Look at the
oil is not oil tank arrived carburetor you? If not, start blocking the exhaust
pipe to start it and see.
Determine the oil is not too much flooded
wet attempting it? - Attempting to remove, empty pull a few rc engine (electric
start on idling a few), and can emit excess fuel, to avoid fuel excessive
flooded wet attempting.
The electric starter electricity enough?
The NRK method correct? - Start fast enough, or pull the right way, can also
cause distress, take a look at our pull video, learn about the way .....
8, the engine is very tight, turn no:
Is generally the area of the oil in the
engine too much removed attempting empty pull several integrated oil discharge
can, do not be hard! ! Otherwise it will damage Recoil / electric start, and
even gasoline engine damage (such as damage to the back cover, damaging the
rear cover teeth, damage to the one-way bearing, even the most serious we have
seen hard to the connecting rod and crankshaft broke !)
If discharged integrated oil tight (usually
the new engine will be the case), you can fire head screwed loose a little, let
the engine a little leak, so that you will not be so tight, so do not start the
gasoline engine will cause damage to other parts: )
Last piece of advice:
1, the novice is best to let a veteran to
teach in the next (of course it can not find people to teach not pull, huh,
huh)
Too oil-rich or too lean the engine is not
good, do not think the oil-rich is to protect the engine, monitoring gasoline
engine temperature, and not too violent destruction of its most important :)
3, for many novice mistakes are very concerned
about, and sometimes I am afraid are distressed sleep well, in fact, not
necessary.
Gasoline engine is not so delicate, and model car is
a toy, do not take it too seriously - tuning that short period of time, long as
not too violent to destroy the engine does not have too much harm, rest
assured, waiting for you play car for a long time, we understand that many fear
is completely not necessary.but we can buy the cheap gasoline engine from the online shop, cost is not so much as before, so i think it is very important to get funs from the fly of the aircraft.
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