Horizon Hobby XR2I Users Manual

2-Channel, 2-Model Memory AM Computer Racing System

5189 JR XR-2i manual 9/18/02 12:01 PM Page 1

Key Input and Display 11 Display Screens 12

Normal Display 12 Low Battery 12 Lithium Battery 12 Memory Backup 12

Accessing the System Mode 13

Model Select 14 Model Name Entry 14 Grip Button C Funtion Select 15 Data Reset 16

Accessing the Function Mode 17

End-Point Adjustment 18 Sub-Trim 19 Servo Reversing 20 Accessing the Direct

Trim Mode 21 Steering Trim 22 Throttle Trim 23 Grip Lever B: Steering Dual-

Rate Trim Adjustment STG 24 Grip Lever A: Brake End-Point

Adjustment BRK 25 XR2i Data Sheets 26 Frequency Chart 27 Warranty and 27/28

Service Information

Introduction to XR2i Quick Start Setup 3 Direct Trim Access 4

Steering and Throttle/Trim Adjustment 4

System Features 5

Transmitter 5 Receiver 5 Servos 5

System Specifications 6

Components 6 Transmitter 6 Receiver 6 Servos 6

Control Identification and Location 7

RC Safety Precautions 8 Steering Tension Adjustment 9 Charging Jack 9 Receiver/Servo Connections

and Installation 10 Operating Your Model 11 Servo Layout 11

T able of Contents

Thank you for purchasing the XR2i 2-channel radio system. This system has been designed to provide RC racers with a high-quality, user-friendly radio system that can be relied upon year after year, race after race. It is important that you carefully read this manual before attempting to operate your XR2i system.

For your convenience, a blank data sheet has been included in the back of this manual. Once you have input all the necessary data for a particular model into

your transmitter, we strongly recommend that you immediately write down that information on the data sheet provided. This will insure that in the rare case of a memory failure, you will not lose the models setup data.

For those who would like to get out to the track quickly with just the basic radio setup, please refer to the Quick Start section that follows.

Introduction

5189 JR XR-2i manual 9/18/02 12:01 PM Page 2

—

REV•NORM

Channel ST = Steering TH = Throttle

Servo Direction

100

EPA

Adjustment position ST = Steering TH = Throttle

Current Value

XR2i Quick Start Setup

Included in this manual are in-depth instructions detailing all the steps and procedures needed to correctly program each of the XR2i's features. Quick Start covers the basic programming information

necessary to get you to the track fast. Later, when you want to learn more about the specific features of the XR2i, refer to the appropriate page(s) in this manual for more detailed programming information.

Servo Reversing

End-Point (Travel) Adjustment

1. With the transmitter power switch on, press the

Scroll key to enter the Function mode.

SCROLL

ENTER

CHANNEL

SCROLL

INCREASE

CLEAR

DECREASE

INCREASE

CLEAR

DECREASE

INCREASE

CLEAR

DECREASE

CHANNEL

2. Press the Scroll key until "REV.NORM" appears on the screen. The "ST" indicates the steering servo reversing screen.

3. Press the Increase or Decreasekey to move the cursor to the desired servo direction (Rev.Norm).

4. Press the Channel key once to access the throttle servo reversing screen.

5. To select the direction of the throttle servo, repeat Step 3 above.

1. From the Servo Reverse function, press the Scroll key once to access the End-Point (Travel) Adjustment function (the EPA screen with "ST" will appear).

Steering Adjustment

2. Rotate the steering wheel in the desired direction (left or right) to be adjusted.

3. Press the Increase or Decreasekeys to select the desired travel value.

Throttle Adjustment

4. Press the Channel key once. "TH" will appear on the screen.

5. Pull the trigger for foward or push the trigger for brake adjustment.

6. Press the Increase or Decreasekeys to select the desired travel value.

5189 JR XR-2i manual 9/18/02 12:01 PM Page 3

Direct Trim Access

Steering and Throttle Trim Adjustment

Steering

1. With the transmitter power switch on, move the digital steering trim lever in the desired position to be adjusted. The steering trim value screen will appear automatically.

Throttle

2. With the transmitter power switch on, move the digital throttle trim lever in the desired position to be adjusted. The throttle trim value screen will appear automatically.

stc

TRIM

thc

TRIM

Steering Trim Function

Throttle Trim Function

Current Value

brk

EPA

Brake Function

Current Value

R/B

ST.

Throttle Trim

Steering Trim

5189 JR XR-2i manual 9/18/02 12:01 PM Page 4

Transmitter

• 2 channels

• AM modulation

• Easy-to-read LCD graphics display

• 2-model memory

• 3-character model name entry

• Electronic digital trim levers for throttle and steering

• Assignable electronic grip lever

• Direct display trim function

• Servo reversing

• Sub-trim

• Steering dual-rate

• Steering end-point adjustment (two points: left and right)

• Brake/throttle end-point adjustment

• Low-battery alarm

• Plug-in crystals

• Charge jack receptacle (rechargeable batteries not included; order JRPB958)

R-125 Receiver

• 2 channels

• AM modulation

• 27MHz/75MHz available

• Battery Eliminator Circuitry (BEC)

• Patented ABC&W interference technology

Z590M Servo

• Metal gears for durability

• Great high torque car/buggy steering servo

• Indirect drive feedback potentiometer for additional vibration protection

• Surface Mount Technology (SMT)

Z270 Servo

• Low current drain

• Indirect drive feedback potentiometer for additional vibration protection

• Surface Mount Technology (SMT)

• Durable nylon gear train

System Features

5189 JR XR-2i manual 9/18/02 12:01 PM Page 5

Transmitter XR2i Receiver R-125 Servos Z590M x 1

Z270 x 1

Accessories BEC switch harness with

battery case, servo accessories (for each servo), instruction manual

R-125 Receiver

Z270 Servo

Components

Model number XR2i Encoder 2-channel computer system RF output 27MHz/75MHz Modulation AM Output power 195mW Current Drain 150mA Power source 1.5V x 8 dry cell

(1.2V x 8 Ni-Cd optional)

Output pulse 1000–2000 (1500 neutral)

XR2i Transmitter

Torque 49 ounce inch (@6.0V) Speed .19 sec/60°(@6.0V) Weight 1.5 oz Size (WxLxH) 0.73" x 1.51" x 1.37" Motor 3-pole ferrite

Torque 85 ounce inch (@6.0V) Speed .15 sec/60°(@6.0V) Weight 1.6 oz Size (WxLxH) 0.73" x 1.55" x .146" Motor 3-pole ferrite

Model number NER-125 Type 2-channel/AM

ABC&W circuitry Frequency 27MHz/75MHz Sensitivity 5qs minimum

(microseconds) Selectivity 8 KHz/50dB Weight 1 oz Size (WxLxH) 1.25" x 1.75" x 0.81" Receiver Antenna 20" Power supply 4.8–6.0V DC

Z590M Servo

System Specifications

5189 JR XR-2i manual 9/18/02 12:01 PM Page 6

Antenna

Electronic Digital Steering Trim Lever

Electronic Digital Throttle Lever

Multi Data LCD Display

Three-Character Name Input

Digital Voltage Reading

Electronic Digital Grip Lever A

Electronic Digital Grip Lever B

Power Switch

Charge Jack

Scroll Button

= Enter Function

= Clear Function

Channel Button

Decrease Button

Increase Button

Steering Tension (Adjustable)

Steering Wheel with Foam Grip

Throttle Trigger (Adjustable)

Grip Button C

Battery Cover * (8 “AA„Batteries Required)

*To remove the battery cover, press down on the arrow and push the cover in the direction of the arrow. Remove the battery case and install 8 "AA" batteries in the direction shown as molded into the battery case. If the transmitter voltage fails to register, check for correct battery installation and voltage.

Control Identification and Location

5189 JR XR-2i manual 9/18/02 12:01 PM Page 7

RC Safety Precautions

Transmitter Crystal Replacement Notice

For safe and reliable performance of your RC model, please carefully read and follow the guidelines below.

1. Radio control models are not toys. They are capable of inflicting serious injury to people and property. Use caution at all times when operating your model.

2. You are responsible for the safe operation of your RC model. You must properly install, test and operate your model with a clear sense of that responsibility. Do not take risks that might endanger yourself or others.

3. Running an RC car in the streets is very dangerous

to both drivers and models. Avoid running your model in areas occupied by full-size automobiles. To locate areas where you can safely operate your model, contact your local hobby shop for RC tracks or clubs in your area.

4. When running an RC boat, keep it away from any swimmers, full-size boats and wildlife. Also, watch carefully for fishing lines that may get tangled in the propeller.

5. Before operating your model, make sure your frequency is clear. If someone else is operating on the same frequency, both models will go out of control, possibly causing damage to the models, as well as others.

6. If at any time while operating your RC model you sense abnormal model functioning, end your operation immediately. Do not operate your model again until you are certain the problem has been corrected.

Caution: Control of your model is impossible without sufficient voltage for the transmitter and receiver. A weak transmitter battery will decrease your range of operation, and a weak receiver battery will slow servo movement and decrease your range of operation. Check your receiver pack voltage often to avoid losing control of your model. When using a model that operates both the electric motor and the receiver from the same battery (Battery Eliminating Circuitry or BEC), you should discontinue use when the top speed sharply decreases or you'll quickly lose control of your model.

The Federal Communications Commission (FCC) requires that changes in transmitter frequency must be performed only by an authorized service technician (Horizon Service Center). Any transmitter frequency changes made by a non-certified technician may result in a violation of FCC rules.

Crystal

5189 JR XR-2i manual 9/18/02 12:01 PM Page 8

Steering Tension Adjustment

Charging Jack

Steering tension is adjustable via the recessed screw located beneath the steering wheel (see page 7 for

exact location). Turning the screw clockwise increases the steering tension.

Charger Pigtail For Transmitter

Black To Positive

Red To Negative

JR TRANSMITTER CHARGEJACK POLARITY:

Located on the left-hand side of the transmitter is the charging jack that accepts only JR wall chargers. Please do not attempt to use any other brand of wall charger, as it may be reverse polarity and can cause

damage to your system. Only use the JR wall charger when the XR2i is equipped with Ni-Cd batteries (JRPB958, available separately).

5189 JR XR-2i manual 9/18/02 12:01 PM Page 9

+ 19 hidden pages