Xray NT18 0.8cc Instruction And Safety Manual

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

Table of Contents

Need help?

Do you have a question about the NT18 0.8cc and is the answer not in the manual?

Questions and answers

Summary of Contents for Xray NT18 0.8cc

Page 2: Table Of Contents
Warranty Servicing the engine NT18 Engine parts Congratulations on your purchase of the high-performance NT18 0.8cc nitro-powered engine. Developed for highest performance and excellent reliability, this engine represents the perfect combination of manufacturing quality and race-winning experience. The XRAY NT18 0.8cc engine has the following features: •...
Page 3: Safety First
CONTENTS SAFETY FIRST !! READ & UNDERSTAND BEFORE OPERATING THE ENGINE !! !! READ & UNDERSTAND BEFORE OPERATING THE ENGINE !! This engine is NOT A TOY, it is a precision-manufactured machine. This machine can injure to you or other nearby, and can also damage property.
Page 4 GRAPHIC INDICATIONS The following words and graphic indications are used throughout this manuals. Be sure you fully understand these meanings before reading the text. Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
Page 5: Parts And Equipment
PARTS AND EQUIPMENT This section illustrates the parts of the NT18 engine, and also describes fuel, glowplug, and air filter that you will use in the operation of this nitro-powered engine. Air Filter Glowplug Head (Cylinder Head) Air Intake Fuel Inlet Main Needle Valve Throttle Idle Speed Screw...
Page 6: Air Filter
The type and quality of glowplug used for your engine has a substantial impact on overall performance and reliability. We strongly recommend glowplugs by XRAY. Glowplugs are consumables and the life of plug depends on several factors and manners of use.
Page 7 STARTING & SUPPORT EQUIPMENT Starter Box You must start the engine by first spinning the clutch flywheel. We strongly recommend using the #104300 HUDY Micro Start-Box, which is specifically designed for starting the NT18 engine. Glowplug Starter A glowplug starter is required to ignite the glowplug for starting. We recommending using a high- quality, battery-operated glowplug starter from a reputable manufacturer.
Page 8: Installation
INSTALLATION If you break in your engine by using a propeller, never use a propeller that has any cracks, scratches, or even the slightest signs of breakage. PROHIBITION This model engine is designed exclusively for installation into model cars. Never use it for any other purpose. It may cause personal injury or mechanical failure. COMPULSORY Fix the engine firmly to the model, using tough bolts/nuts or screws with locking components/features that will prevent them from loosening.
Page 9: Starting The Engine
STARTING THE ENGINE This section describes proper starting techniques and some troubleshooting information. Safety Information Keep loose objects such as shirt sleeves, neckties, and scarves away from the spinning tires, flywheel, and gears. Be careful not to drop utensils such as screwdrivers and pencils into the spinning tires, flywheel, and PROHIBITION gears.
Page 10 Starting Procedure Fill up the fuel tank and "dry-start" the engine for 2-3 seconds without applying the glowplug starter, and with the carburetor in "idle" position; this primes the fuel lines and allows the fuel to reach the engine. Then apply the glowplug starter and start the engine.
Page 11 Flooding & Hydraulic Lockup Excess fuel in the cylinder may cause the engine to flood (by extinguishing the glowplug), or it may cause a hydraulic lockup (when excess fuel fills the cylinder above the piston, preventing the piston from moving upward). If this happens, DO NOT try to start the engine, or severe engine damage may result.
Page 12: Operating The Engine
OPERATING THE ENGINE This section contains important engine safety operation information. Safety Information – ENGINE OPERATION & RELATED MATTERS Fuel is highly flammable. Always store fuel in a safe place away from any danger of sparks, excessive heat, or anything which could ignite the fuel. Mishandling fuel and fuel containers may cause fires. FLAMMABLE Fuel for model engines contains highly-volatile and poisonous ingredients such as methanol.
Page 13: Engine Break-In
ENGINE BREAK-IN Each engine is shipped from the factory with all carburetor settings set to a standard position. A nitro-powered engine requires careful break-in the first time the engine is used to allow the internal parts to achieve proper operating clearances. This is especially true of the piston/cylinder, crankshaft, and conrod. Pay close attention during the initial break-in period;...
Page 14: Carburetor Adjustment - Overview
CARBURETOR ADJUSTMENT – OVERVIEW The "Golden Rule of Carburetor Adjustment" is to make only small adjustments at one time, maximum 1/8 turn (45°), especially when fine tuning. The engine is very responsible to small changes in mixture settings. The carburetor on the NT18 engine is preset at the factory, meaning that the original settings are close to where they should be for normal operation.
Page 15 1. Main Needle Valve The main needle valve controls the overall fuel flow to the carburetor, though its effects are particularly noticeable between ¼ and full throttle. In the situation where this setting has not been adjusted, or if you get lost with your setup, put the main needle valve to the factory setting: •...
Page 16: Carburetor Adjustment - Before Putting The Car On The Track
Main Needle Adjustment When the main needle is properly adjusted, the engine immediately responds to the throttle operation with clean, hard acceleration without hesitation. To check if the engine is running at a proper setting, pinch the fuel line to the carburetor and observe the results: •...
Page 17 Stage 2: Setting the Idle Speed Take the car off the ground, and open the throttle fully for 2-3 seconds. Close the carburetor and check the idle speed that occurs immediately after. • If the engine stops almost immediately, turn the idle adjustment screw clockwise to increase the idle RPM.
Page 18: Carburetor Adjustment - At The Track
CARBURETOR ADJUSTMENT – AT THE TRACK You can only fine-tune the main needle setting at the track. Initially, the main needle should still be set a little rich. Fill the fuel tank, run the car up to maximum speed for a few laps, and check if it reaches top RPM without running rich towards the end (4-stroking).
Page 19: Fine-Tuning The Carburetor
FINE-TUNING THE CARBURETOR After your engine has been properly broken in and tuned at the track, be aware that changes in weather (temperature, humidity, barometric pressure), altitude, and fuel nitro content will affect the performance of the engine. See the table below for guidelines on how to adjust your engine’s carburetor settings to compensate for these various changes.
Page 20 • The engine’s compression may be low due to wear. This will make the engine difficult to start when it is warm, and may tend to stall when running and when the throttle is closed suddenly. Engine will not spin (starter box will not turn the engine): •...
Page 21: Engine Care
Piston Stuck at top of cylinder – Top Dead Center (TDC): A brand new engine that has not had a lot of break-in will typically have a very tight fit between the piston and the top of the cylinder (known as "pinch"), since the cylinder has a tapered fit. The fit should not be so tight that then engine cannot be started.
Page 22: Warranty
Any use of the product for other than its specific intended use will automatically void this warranty. Use only authentic XRAY spare parts, use of any other products will void this warranty. Claims must be accompanied by a dated proof of purchase (registered receipt, credit card invoice, etc.).
Page 23: Servicing The Engine
If you want to repair the engine yourself, take care of the following: • Clean the outside of the engine thoroughly before you open it, work on a clean spot, use proper tools. Any dust or dirt that enters the engine will make considerable damage. •...
Page 24: Nt18 Engine Parts
388820 AIR FILTER BODY 388840 AIR FILTER FOAM 610001 XRAY NT18 0.8cc ENGINE 611001 CRANKCASE WITH BEARINGS + CARBURETOR RETAINER 611201 REAR COVER & GASKET 611401 CRANKSHAFT 611601 BLUE HEATSINK HEAD - CNC MACHINED + HEAD SHIM 612001 PISTON & SLEEVE SET & CONNECTING ROD SET...
Page 25 NT18 ENGINE PARTS 388840 681901 388820 611601 611001 616001 908275 681801 611401 611001 612001 611201 960025 681001...
Page 26 XRAY MODEL RACING CARS XRAY MODEL RACING CARS XRAY MODEL RACING CARS P .O.BOX 103, 911 50 TRENČÍN, SLOVAKIA, EUROPE P .O.BOX 103, 911 50 TRENČÍN, SLOVAKIA, EUROPE P .O.BOX 103, 911 50 TRENČÍN, SLOVAKIA, EUROPE PHONE: ++421 905 402724...