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15

Tuning, Adjusting and Maintaining the Speed-NT

Periodically examine your Speed-NT for the following:

• 

Keep your vehicle clean using a brush to remove dirt 

 

and dust.

• 

Look for cracks in the suspension arms and other 

 

molded parts.

• 

Check that the tires are still glued to the wheels.

• 

Check that all the wheel bearings are clean and lubricated.

• 

Using your tools, attempt to tighten all the screws and 

nuts.

• 

Verify that the Chamber Links and Steering linkage are 

 

not bent.

• 

Check that the Toe and Chamber settings are as desired 

 

and equal.

• 

Check the Drivetrain:

o  Check the Spur gear for wear.

o  Check the Pinion gear.

o  Check the Slipper Pads for wear.

• 

Take the shocks off the vehicle and check, especially if they 

appear to be leaking as it is time to rebuild them. 

• 

Look over all the wiring and connections for bare wire or 

any place which could lead to a short circuit.

• 

Turn on the radio and if the Green LED is off or dim replace 

the 4 AA batteries in the transmitter.

After you become familiar with driving your Speed-NT,  

you may need to reset or make adjustments for better  

driving performance.
Just as in a real car, alignment is an important factor in your 

vehicle’s handling. When you are ready to make adjustments 

it is a good idea to have a flat work space to place your vehicle 

on. This will enable you to easily and more quickly make both 

Toe-in and Chamber adjustments. These adjustments should be 

set with the vehicle sitting at its normal ride height.

Starting Settings

Carburetor:

High-Speed: 

2

3

/

4

 Turns Out

Low-Speed: 

2

3

/

4

 Turns Out

Slipper: 

4 Turns Out

Radio End Points:

Tuning the Front End of the Speed-NT

Shock Location

: The Speed-NT has two mounting locations 

on the front shock tower. The position can be easily adjusted 

by simply moving the top of the shock to another hole. The 

standard location (outside hole on the tower) works best on 

most surfaces. Moving the top of the shock inward a hole will 

slow steering response and make the Speed-NT smoother in 

bumps. The standard position on the arm is outside, which 

offers the best balance. Running the inside shock location will 

give the Speed-NT more steering into the turn and less steering 

on corner exit. Running the shock location outside on the 

front arm will give you less overall steering into the turn and 

keep the front end flatter through the turn, making the Speed-

NT smoother and easier to drive. This can be used on high-

traction surfaces. Keep in mind as you move the shocks in on 

the arm this will require internal limiters to obtain the correct 

suspension travel. For the inside location a total of .200-inch 

limiter works great. Losi sells a shock spacer set (LOSA5050) that 

includes .030-inch, .060-inch, .090-inch and .120-inch spacers.
All of the Camber and Steering Linkages have been assembled 

in the following way.
Using the supplied flat metal turnbuckle wrench if you need to 

SHORTEN any link on the Speed-NT rotate the wrench towards 

the front of the vehicle (counterclockwise). If you need to 

LENGTHEN any link then rotate the wrench towards the rear of 

the vehicle (clockwise).

Static Camber

: This refers to the angle of the wheels/tires 

relative to the surface (viewed from either the front or back). 

Negative camber means that the top of the tire leans in toward 

the chassis. Positive camber means the top of the tire leans out, 

away from the chassis. Camber can be precisely measured with 

after-market camber gauges, sold at a local hobby shop. It can 

be measured (roughly) using any square (to the ground) object 

by checking the gap between the square edge and the top of 

the tire. Testing has shown that 1 degree of negative camber 

is best for most track conditions. Increasing negative camber 

(in the range of 1-2 degrees) will generally increase steering. 

Decreasing negative camber (in the range of 0-1 degree) will 

generally decrease steering and the Speed-NT will feel easier to 

drive as a result. This is, most often, a very critical adjustment in 

tuning your Speed-NT that can be made quickly and easily.

Содержание Speed NT

Страница 1: ...1 Not responsible for errors All prices subject to change without notice Losi a Division of Horizon Hobby Inc Printed 06 09 16265...

Страница 2: ...he Speed NT Introduction Thank you for choosing the Speed NT This is a highly developed RC model that features a sophisticated radio system and a nitro fuel powered engine It does require some mechani...

Страница 3: ...ection This model is controlled by a radio signal that is subject to interference from sources outside your control Interference can cause temporary loss of control so it is advised to always keep a s...

Страница 4: ...Nitrotane 20 Sport fuel LOSF0020 or LOSF0120 Other fuels may not support the engine warranty Fuel bottle LOSB5201 Glow Igniter LOSB5221 Rechargeable Receiver battery LOSB9951 Required Equipment You wi...

Страница 5: ...uel Line Pressure Line Fuel Filler Exhaust Pipe Front Shock Tie Rod Steering Link Front Suspension Arm Front Camber Link Front Body Mount Steering Servo Receiver Cover Throttle Linkage Adjuster Air Fi...

Страница 6: ...tle Brake Trigger Steering and Throttle Endpoint Adjustment Pots 4 Auxiliary Channel Bind LED Throttle Channel Steering Channel Binding Port Power On Off Switch Dual Rate Adjustment ST D R Antenna Ste...

Страница 7: ...nt Pots allow you to adjust the maximum movement of the servos 11 Bottom Cover Removable for installing AA batteries 12 Binding LED Blinks when binding solid indicates binding complete Re Binding the...

Страница 8: ...repeat steps 1 6 Should this not correct the problem please call Horizon Service Repair for further assistance 8 The Bind process is complete Your vehicle s radio system should be ready for use Using...

Страница 9: ...s straight up at the back of the carburetor Both feature a slotted head that is used as a reference and receptacle for a flat blade screwdriver for adjustments The mixture is made richer by turning th...

Страница 10: ...engine at idle pinch and hold the fuel line near the carburetor cutting off the flow of fuel and listen closely to the engine rpm speed If the low speed needle is set correctly the engine speed will...

Страница 11: ...ells in the model If the model gets stuck do not pull the throttle as it may result in damage to the engine or clutch Leave plenty of room to stop the model It will take as much room to stop as it did...

Страница 12: ...ap screw 7 Replace the engine installing the four 5 40 screws from beneath as well as the throttle link and pipe mount screw Adjusting the Gear Mesh As seen in the photo above the motor can be moved f...

Страница 13: ...f the chassis on a block so the wheels can turn freely 2 Remove the plug at the top right hand side looking from the back toward the front of the transmission case You will see the 2 Speed mechanism t...

Страница 14: ...or a toothbrush to remove dirt and dust Avoid using solvents if possible as this can actually wash the dirt into bearings and areas not accessible without disassembly causing additional wear We sugges...

Страница 15: ...inward a hole will slow steering response and make the Speed NT smoother in bumps The standard position on the arm is outside which offers the best balance Running the inside shock location will give...

Страница 16: ...handling on different surfaces The outer location also helps the Speed NT stay tighter in turns with a more precise steering feel Moving the link to the inner hole will make the steering react slightl...

Страница 17: ...n exit Toe In Having the same definition as for the front end the toe in can be adjusted on the Speed NT with the rear hubs The stock toe in is 3 degrees of inboard per side and 0 degrees in the hub I...

Страница 18: ...e the result of simple user errors or minor adjustments which are easily addressed If after reading below you cannot resolve your problem then please call Horizon Product Support at 1 877 504 0233 Rad...

Страница 19: ...side 2 While holding the shock body with the shaft pointing up turn the plastic hex of the shock cartridge where the shaft enters the shock counter clockwise until it and the shock shaft can be remove...

Страница 20: ...on of or to any part of the Product This warranty does not cover damage due to improper installation operation maintenance or attempted repair by anyone other than Horizon Return of any goods by Purch...

Страница 21: ...paired or replaced free of charge Repair or replacement decisions are at the sole discretion of Horizon Hobby Non Warranty Repairs Should your repair not be covered by warranty the repair will be comp...

Страница 22: ...op off your waste equipment for recycling please contact your local city office your household waste disposal service or where you purchased the product UK DE DK BG SE FI EE LV LT PL CZ SK HU RO SI AT...

Страница 23: ...23 Operating and Tuning Notes...

Страница 24: ...24 2009 Losi A division of Horizon Hobby Inc Not responsible for typographical errors All pricing subject to change without notice 800 0397...

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