DLE 35RA User Manual
DLE
-
35RA
Operator’s Manual
Specifications
Displacement:
Performance:
Idle Speed:
Ignition Style:
Recommended Propellers:
Spark Plug Type:
Diameter × Stroke:
Compression Ratio:
Carburetor:
Weight:
™
© 2014 Hobbico®, Inc. DLEG0435 Mnl
34.5cc [2.13cu. in.]
4.1HP / 8,500 rpm
1,6 00 r pm
Electronic Ignition
18u8, 18u10, 19u8, 20u8, 20u10
CM6
(Gap) 0.018in.– 0.020 in. [0.45mm –0.51mm]
1.5 in . [ 38 .5 mm] u1.18 in. [ 30 mm]
7. 6 : 1
DLE with Manual Choke
Main Engine − 2.08 lb [947g ]
Muffler − 2.85oz [81g]
Electronic Ignition − 4.69 oz [133 g]
Engine Mount Standoffs − 3.06 oz [87g]
87− 93 Octane Gasoline with a 30:1
Fuel:
gas/2-stroke (2-cycle) oil mixture
Parts List
(1) DLE-35RA Gas Engine with DLE Carburetor
(1) CM6 Spark Plug with Spare Ignition Wire Spring
(1) Muffl er w/Gasket
(2) 5x15mm SHCS with 5 mm Lock Washers (muffl er mounting)
(1) Electronic Ignition Module w/ Additional Tachometer Lead
(4) 60mm Engine Mounting Standoffs
(4) 4x40 mm SHCS with 4 mm Lock Washers & Flat Washers (propeller mounting)
(4) 5x20 mm SHCS with 5mm Flat Washers (mounting engine to standoffs)
(1) Silicone Pick-up Wire Cover / Ignition Wire Cover
(1) Red Three Pin Connector Lead w/ Pig Tail (for ignition switch)
(2) Three Pin Connector Securing Clips
(1) DLE Decal
(4) 5x25 mm SHCS with 5mm Washers
(2) 20x60mm White Exhaust Tubes with Clamps (not pictured)
Safety Tips and Warnings
●
This engine is not a toy. Please place your safety and the safety of
others paramount while operating. DLE will not be held responsible
for any safety issues or accidents involving this engine.
●
Operate the engine in a properly ventilated area.
●
Before starting the engine, please make sure all components
including the propeller and the engine mount are secure and tight.
It is strongly recommended that a screw sealant is used (Great
Planes Threadlocker GPMR6060) during engine installation.
●
During the break-in period, it is recommended that the engine be
installed on the aircraft or a test stand with an appropriate shock
absorber. Otherwise it is probable that vibration could rebound
2
back to the engine and serious damages may occur during the
break-in period. Break-in should be considered about the fi rst 3-5
gallons you run in the engine.
●
For your safety and the safety of others, please do not stand in
front or in line with the propeller when the engine is running. Keep
onlookers away from the running engine, especially small children.
●
Always use a balanced spinner and a balanced propeller. An
unbalanced spinner and propeller combination will cause high levels
of vibration and may cause the propeller shaft to break. Always
use a lightweight spinner on your engine. Lightweight spinners
are considered to be those with a cone wall of 1mm or less. Heavy
spinners could cause the propeller shaft to break. Securely tighten
the spinner and propeller on the engine to prevent them from being
thrown off the engine while running.
●
Never use a propeller that has hit the ground. Even though it may
look good from the outside, it may be cracked on the inside which
may cause it to disintegrate while in use. Do not use a nicked,
cracked or split propeller.
●
Keep foreign objects away from the propeller. Make sure that
nothing can be “sucked in” by the propeller.
●
Never start the engine on loose gravel or sand.
●
Do not attempt to stop the engine by throwing anything into the
path of the propeller.
●
Make sure the fuel line is well-secured to the engine and to the
fuel tank so that it won’t come off in fl ight.
●
Do not use silicone fuel line because it will be dissolved by the fuel.
Use gasoline approved rubber fuel line. Always secure the fuel
line away from the cylinder head. The engine’s heat can damage
the fuel line.
●
Never touch the engine immediately after a run. The engine will
be hot.
●
Before transporting your model, remove all the fuel from the fuel
tank and fuel lines.
● Always use high-quality oil intended for 2-stroke (2-cycle) engines.
It’s a good idea to use a petroleum-based 2-cycle motor oil like
Lawn Boy All Season - Ashless oil for the break-in period.
●
The throttle and choke pushrods should be non-metallic.
●
If the engine is not to be used for more than a month, drain the
fuel tank and remove any fuel from inside the carburetor. Do this
by running the engine at idle until it quits by running out of fuel.
Keeping gasoline inside the carburetor over an extended period of
time will damage the diaphragm valve and clog passages inside
the carburetor. Due to the carburetor being more complicated
than those used in glow engines, keep the fuel clean by using a
3
fuel fi lter. Use a fi lter intended to be used with gasoline engines.
Metal fi lters intended for glow engine are too coarse and will not
screen out fi ner particles.
●
Always fi lter your fuel by using an appropriate fi lter before putting
it into the airplane’s fuel tank.
●
Gasoline is extremely fl ammable. Keep it away from an open fl ame,
excessive heat or sources of sparks.
●
Do not smoke near the engine or the fuel tank.
●
This engine was designed for use in a model aircraft. Do not attempt
to use it for any other purpose.
●
Always install an ignition system on/off switch on the aircraft used.
●
Do not install your throttle servo inside the engine compartment.
Doing so could cause radio interference. Install all electronic radio
devices at least 12" [305mm] away from the engine.
●
Caution: Running the engine with a lean gas mixing will cause the
engine to overheat and burn the electrode of the spark plug. Pay
close attention to the High-speed Needle adjustment. Running the
engine with the proper gas mixing will cause the spark plugs to
appear yellow at the ignition point.
●
For optimum performance please use fresh or recently purchased
93 octane gasoline (87 octane gasoline will suffi ce) with a 30:1 gas/
oil mixture.
GAS/OIL Mixing Chart
1 Gallon Gasoline (128 fl oz /3.78 L) / 2-Cycle Oil
(4.26 fl oz/ 125.68ml) = 30:1 ratio
●
Excessive running of the engine at idle speed can result in a seriously
carbonized spark plug.
●
Keep the surface of the engine clean to ensure proper heat
dissipation. Ensure proper cooling/ventilation around the cylinder
with adequate air exhaust.
●
To avoid permanent damage to the electronic ignition system,
NEVER rotate the propeller on your DLE engine with the electronic
ignition system switched on and the plug not installed in the plug cap.
●
If you choose to use the optional TX activated gas engine kill switch
(DLEG9205) it is strongly recommended that you install the TX
activated kill switch between the with a manual on/off switch and
the ignition. The manual on/off switch provides an added safety
feature in the event the TX activated kill switch does not function
properly. This is especially important during the starting sequence
as it requires the manual on/off switch to be in the ON position
before ignition can occur.
4
Installation Instructions
Prepare the engine for installation
1. Check to see that all screws and bolts are tight. Check carefully for
any cracks, broken or missing parts. Tighten or replace any damaged
or missing parts before proceeding.
2. Install the silicone wire cover over the pick up lead coming from
the engine (cut the excess silicon wire cover) and connect the lead
to the pick–up lead from the Electronic Ignition Module. Secure
the connection with the included three pin connector securing clip.
3. Connect the on/off switch lead to the red connector from the
ignition control module using the lead from the on/off switch or
with the included three pin connector with pig tail. Use one of the
5
included three pin securing clips to secure the connection.
Switch (Not included)
Charge Lead
Battery Lead
Ignition
Battery Lead
OPTIONAL
ELECTRONIC IGNITION
SYSTEM
Ignition Wire
(To Spark Plug)
Ignition
Ignition Control Switch Wire (To On/Off Switch)
OPTO Gas Engine Kill Switch
(DLEG9205, not included)
KILL
SWITCH
Rx
Tachometer Lead/
RPM Signal Output
Tachometer
Pick-Up
Sensor Wire
(To Sensor
On Engine)
(Not included) DLEG5525
OPTIONAL
LED
Rx Batt
Lead
4. Connect the ignition module battery to the on/off switch. Any
4.8 – 8.4V, 1000mAh and above capacity battery will work well for
this. Use heat shrink tubing to secure this connection. Optional:
Install the TX activated gas engine kill switch (DLEG9205) between
the manual on/off switch and the ignition as shown above. This is
especially important during the starting sequence as it requires the
manual on/off switch to be in the ON position before ignition can
occur. The kill switch LED should be installed on the exterior of the
aircraft so that it’s visible from the front of the aircraft. This is to
ensure that the person starting the engine is aware that the ignition
is armed. If properly installed as shown above, an illuminated red
LED indicates that that the ignition is armed.
5. Install the ignition on/off switch on the aircraft so that it is
easily accessible.
6. Install the ignition module
and battery securely in the
airplane forward area. It is
recommended that a thin
piece of foam rubber is
placed between the module
and the mounting surface
and that Velcro® strap is used
to hold the module in place.
6
7. Secure all connections with heat shrink tubing. (not supplied)
8. Install the silicone ignition wire cover over the ignition wire to
the spark plug.
9. Install the spark plug into the engine cylinder (7– 8 lbs Torque).
Do not over tighten.
Installing the DLE-35RA on Your Airplane
Note: The DLE-35RA must be installed on at least a 3/8" [9.5 mm] fi rewall.
The fi rewall must be securely glued to the airplane. Use triangle stock
and pin the fi rewall with hardwood dowels to reinforce the fi rewall
glue joints. Never install the DLE-35RA onto a fi rewall thinner than
specifi ed because it may fail due to the power of the engine.
Note: The length of the engine from the back on the engine mount
to the face of the propeller washer is 6.30" [160mm].
1. Use the supplied template (on the back cover of this manual) to
drill the engine mounting bolt holes.
2. Install the standoffs to the
engine with the included (4) 5
x 25mm SHCS and 5 mm flat
washers (it’s a good idea to use
5mm lock washers between the
SHCS and the fl at washers). Next,
install the engine with standoffs
to the fi rewall using (4) 5 x 20 mm
SHCS with 5 mm lock washers and fl at washers (not included). Use
threadlocking compound, such as Great Planes® Pro™ Threadlocker
(GPMR6060) on all mounting screws.
3. Install the fuel tank in the airframe. Use only gasoline approved
fuel tank and fuel lines and a gasoline approved stopper. One line
should go to the carburetor and the other is to be used as a vent (a
vent line is simply an open ended fuel line from the fuel tank which
exits the engine compartment or the fuselage; most vent lines exit at
the bottom of the fi rewall).You can fi ll the tank by using the carburetor
line as fi ll line if you have access to it or install a third line to be used
as fi ll line. Installing a third line is the cleanest and easiest way to add
fuel. An alternative fueling set up is a 2-line system with a T-fi tting
approved for gasoline use. Be sure to use a fi ller plug with either a 2
line or 3 line set-up. It’s a good idea to add an extension to the vent
line as shown, that goes up and to the rear of the tank. This helps to
avoid draining fuel from the tank when the model is pointed down.
7
Fuel Tank
Supply Line
to T-Fitting
Carb
Make connection line
between T-Fitting and
Carburetor as short
as possible.
2-LINE
SET UP
Route to top-front of fuel tank interior,
to prevent siphoning (2-Line Set-up)
3-LINE
SET UP
Clunk Line
Drain/Vent Pressure Relief Line
Fuel Tank
Clunk Lines
Fuel fill line
Plug
T-Fitting
Carb
Filler Cap
or Plug
Fuel fill line
This line must be extended
to exit the bottom of the aircraft.
Drain/Vent Pressure Relief Line
Route to top-front of fuel tank
interior, to prevent siphoning.
Supply Line
to Carburetor
This line must be extended
to exit the bottom of the aircraft.
4. Install the throttle servo at least 12" [305mm] away from the
engine. Make sure that you get the carburetor’s full range of rotation
with your servo travel. Be sure to use a non-metallic linkage.
5. Install the choke
servo (optional) at
least 12" [305 mm]
away from the
engine. Be sure to
use a non-metallic
linkage.
8
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