DLA ENGINE OPERATING-INSTRUCTION
MANUAL
06/29/2016 Copyrighted Material
Owner’s Manual All Rights Reserved 03180-10000
Page - 26 DLA 32, 58, 64, 64-I2, 116, 116-I2 & 128cc, 180c, 232cc Rev. A.05.11
Fuel – GAS (Type of Gas and Oils Mixture Ratios)
Well filtered (~ 10 microns), 87 Octane (89 Octane is acceptable) Gasoline is recommended for all
DLA Engines. Higher Octane ratings (Aviation Gas) will not improve the engine performance, and
may cause the engine to perform more poorly, run slower and most often overheat. Ethanol
content of Gas in excess of 10% will void the warranty. Select a good quality, 2-cycle oil, and mix
the oil and gasoline to the following ratios:
o Break-in and Trial Running: 25:1 to 30:1 Gasoline:Oil
30:1 is preferred
Use ONLY Carbon Based, 2-cycle oil for break-in
o Typical Flying: 40:1 to 50:1 Gasoline:Oil
45:1 is Typical
Engine or Carburetor damage caused by fuel additives, such as nitro, alcohol, or other ingredients
are not covered under the warranty. Running the improper gasoline to oil mixture ratio, running
the carburetor’s high-end adjustment at a too lean setting, overly-advancing the timing and engine
over heating are not covered by the warranty.
A Chart of Gasoline to Oil mixture ratios is provided at the end of the manual for your
convenience, on the last page of the manual.
TANK INSTALLATION and PLUMBING:
DLA Engines typically burn fuel at a rate, generally measured, in ounces per minute, at full
throttle, as shown in the list below. The selection of the tank size is determined by several factors,
such as:
How long do you want to fly and what fuel reserve you want to maintain:
o Ex: for a DLA 32 at 0.6 oz/min, a desired flight time of twenty (20) minutes and a
5% reserve …. A 14 to 16 oz tank would be required. (0.6x 20 x 1.05 = 13 oz )
Fuel Consumption by engine displacement:
o DLA 32cc 0.50 – 0.7 oz per minute (Typ, Set up & rpm dependent)
o DLA 58cc 0.60 – 0.8 oz per minute (Typ, Set up & rpm dependent)
o DLA 64cc 0.67 – 0.9 oz per minute (Typ, Set up & rpm dependent)
o DLA116 Twin & IL 0.85 – 1.2 oz per minute (Typ, Set up & rpm dependent)
o DLA128cc 1.20 – 1.4 oz per minute (estimated)
The gas or fuel tank is typically placed with the tank’s center located over the aircraft’s Center of
Gravity (C/G) point, thus assisting in lessening the effect on the aircraft’s pitch-moment as fuel is
consumed from the tank. DLA engines have a “diaphragm-type” pump in the carburetor and thus
the relative level of the tank’s, fuel exit point to the carburetor’s in-take point is not critical.
However, keeping these two points at the same level can be desirable. The tank and tank
“stopper” material must be compatible with gasoline. (Silicon tubing is NOT suitable for gasoline
use.)
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