Whiplash Gas User Guide
Operating and maintaining your Whiplash Gas helicopter is not much different than the other Whiplash versions or any other model
helicopter. The power system is different and its operation may be unfamiliar to those who have only flown electric or glow powered
models. With that in mind this user guide will help you operate your Whiplash Gas helicopter from its first flight. The following sections
address each of the areas that may be new or you may not be familiar with.
Safety
Gasoline or its equivalents is much more flammable than glow fuel. If you fly in an area with fire hazards, consider having access to a
fire extinguisher in the event a fire occurs. Keep all flames or hot sources away from the fuel and fuel tank in both the model and your
fuel can. A gasoline fire is very dangerous and destructive.
Also be aware that the engine muffler will operate at a significantly higher temperature than you may be accustomed to with a glow
powered model. Contact with the muffler can easily cause a fire or bodily injury and it will be hot enough to easily peel off skin so be
careful!
engine
The Whiplash requires the acquisition of the RC format of either the Zenoah or Chung Yang motors. The model is not compatible with
the PUH motor version used in the XCell Spectra G and many other models
These motors are available in 23cc (RC240), 26cc (RC270) and 29cc (RC290) versions. They are available from multiple sources in
their stock form or from Zenoah specific motor tuners/modifiers. Some of the modified motors have different displacements
If you intend to run a stock, unmodified motor, it is recommended that you use the 23cc or 26cc version of the motor. They have the
best inherent engine balance and will run the smoothest in the model
If you select a modified motor, the modifier can recommend the most appropriate motor from their selection for the Whiplash. The TRM
VX300 Whiplash Edition and the BH Hanson 300 RC 3D Max versions have been extensively tested in the model
The major helicopter engine modifiers are TRM Power and BH Hanson, there are others available as well. It is highly recommended
that you acquire a motor that has been properly balanced.
Fuel
The Zenoah motors for this kit are designed to run with common pump gasoline. The regular 87 octane is appropriate, it is not
necessary or even desirable to use higher octane fuels unless specifically directed by an aftermarket modifier. All of these motors
require an oil-premix to be run, you cannot use gasoline without first mixing in a lubricant
If your model is stored where fuel odor is undesirable, you can instead run Lantern/Camper fuel available at a sporting good or
camping supply store. It is slightly more expensive than gasoline but has little odor and has approximately the same running
characteristics. You also can use premixed fuel like Stihl Motomix or similar (does not smell).
Oil
If you are using a modified motor from an engine tuner, follow their instructions for type and volume of oil to premix with the fuel
If you are using a stock Zenoah motor, use a quality two stroke pre-mix oil.
Some oils that are commonly used:
• AMSOil Saber 100
• Yamalube 2R
• Honda HP2
• Klotz R50
• Stihl HP Ultra
When the motor is new and not yet broken in, run an oil mix of 32:1 per gallon of gasoline. For that ratio mix 4oz of the selected oil
to each gallon of fuel. After running 1-2 gallons of fuel through the motor you can decrease the amount of oil used to the minimum
support by the oil manufacturer but do not run less than a 40:1 premix ratio (no less than 3 oz of oil per gallon of fuel)
Fuel Tank Plumbing
The carburetor on the motor contains a negative pressure fuel pump which draws fuel from the tank. As a result there is no need to run
any sort of pressure system or header fuel tank.
It is however REQUIRED that the fuel tank be vented!
Follow the fuel tank plumbing directions in the assembly guide but make sure to either use a one way valve or use an 8-10” length of
gasoline proof fuel line to create a tightly wound “fuel vent loop”. Wrap the line into at least two loops and secure them with tie wraps
or Velcro
Failure to properly vent the tank will result in the engine going lean in flight and it will likely quit running as a result of it.
Also make sure to use a filtered fuel clunk in the fuel tank. This works just like the “fuel magnet” if you’re familiar with that product for
glow models and will help keep the fuel clean and reduce air bubbles from being pumped into the carburetor.
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