Top Flite B-25J Mitchell User Manual

WARRANTY.....Top Flite Models guarantees this kit to be free from defects in both material and workmanship at the date of purchase. This warranty does not cover any component parts damaged by use or modifi cation. In no case shall Top Flite’s liability exceed the original cost of the purchased kit. Further, Top Flite reserves the right to change or modify this warranty without notice. In that Top Flite has no control over the fi nal assembly or material used for fi nal assembly, no liability shall be assumed nor accepted for any damage resulting from the use by the user of the fi nal user-assembled product. By the act of using the user- assembled product, the user accepts all resulting liability.
If the buyer is not prepared to accept the liability associated with the use of this product, the buyer is advised to return this kit immediately in new and unused condition to the place of purchase. To make a warranty claim send the defective part or item to Hobby Services at the address: Include a letter stating your name, return shipping address, as much contact information as possible (daytime telephone number, fax number, e-mail address), a detailed description of the problem and a photocopy of the purchase receipt. Upon receipt of the package the problem will be evaluated as quickly as possible.
READ THROUGH THIS MANUAL BEFORE STARTING CONSTRUCTION. IT CONTAINS IMPORTANT INSTRUCTIONS AND WARNINGS CONCERNING THE ASSEMBLY AND USE OF THIS MODEL.
Hobby Services
3002 N. Apollo Dr. Suite 1
Champaign IL 61822 USA
Top Flite Models Champaign, IL Telephone (217) 398-8970, Ext. 5 airsupport@top-fl ite.com
Entire Contents © Copyright 2007 TOPZ0980 for TOPA0980 V1.0
Wingspan: 88.5 in [2255mm] Wing Area: 1036 sq in [66.8 dm
2
]
Weight: 17- 19 lbs [7710 – 8620g] Wing Loading: 38 – 42 oz/sq ft [115 – 129g/dm
2
]
Length: 71 in [1795mm] Scale: 1/9th (11%) Radio: 8-channel, 13 servos Engine: .70 cu in [11.5cc] four-strokes,
.46 – .50 cu in [7.5 – 8.0cc] two-strokes

Top Flite B-25J Mitchell Specifications

General

Brand	Top Flite
Model	B-25J Mitchell
Material	Balsa and Plywood
Power Type	Glow
Recommended Engine	.46-.52 cu in (7.5-8.5 cc) 2-stroke or .52-.65 cu in (8.5-10.6 cc) 4-stroke engines

Summary

WARRANTY INFORMATION

Warranty Terms and Conditions

Details the limitations and conditions of the product warranty.

SAFETY PRECAUTIONS

General Model Operation and AMA Safety Code

Essential safety rules for operating the model aircraft and AMA guidelines.

MAIN LANDING GEAR INSTALLATION

Retract System and Air Line Setup

Detailed steps for installing pneumatic retracts and air lines.

MAIN LANDING GEAR DOOR HOOKUP

Installing Lever and Bellcrank Mechanism

Detailed steps for assembling the door lever and bellcrank system.

RETRACT AND DOOR ADJUSTMENTS

Troubleshooting Landing Gear Operation

Common problems and solutions for landing gear and door operation.

COWL FITTING AND ADJUSTMENTS

Cutting and Fitting Engine Cowls Precisely

Instructions for rough-cutting and fitting engine cowls for optimal alignment.

REPLICA ENGINE AND COWL CUTOUTS

Finalizing Engine Cowl for Muffler and Fueling

Finalizing engine cowl cutouts for muffler and fueling line access.

RUDDER AND ELEVATOR SERVO HOOKUP

Connecting Rudder and Elevator Servos to Stab

Attaching servos to the horizontal stabilizer and control surfaces.

NOSE GEAR INSTALLATION AND STEERING

Mounting Nose Gear Servo and Connecting Cables

NOSE GEAR DOOR INSTALLATION

Installing Nose Gear Door Lever and Hinges

AIR SYSTEM HOOKUP

Mounting Air Control Valve and Fill Valve

RADIO INSTALLATION AND CONNECTIONS

Mounting Receiver and Connecting Radio System

INBOARD WING PANEL MOUNTING

Attaching Inboard Wing Panels to Fuselage

NOSE-GUNNER CANOPY INSTALLATION

Fitting and Gluing the Nose-Gunner Canopy

PREPARING FOR FLIGHT

Balancing the Model (Center of Gravity)

Critical procedure for ensuring stable flight characteristics.

PREFLIGHT CHECKS

Lateral Balance and Control Direction Checks

Ensuring lateral balance and verifying control surface movement.

SETTING CONTROL THROWS AND PROPS

Recommended Throws, Prop Balancing, Battery Charging

Chart of throws, prop balancing, battery charging, and ground check steps.

ENGINE AND FLIGHT SAFETY

Engine Safety Precautions and AMA Code

Safety guidelines for engines and excerpts from the AMA Safety Code.

FLYING THE B-25J MITCHELL

Model Characteristics and Pilot Skill Requirements

TAKEOFF AND ENGINE-OUT PROCEDURES

Takeoff Technique and Single Engine-Out Handling

Steps for takeoff and procedures for flying with one engine out.

LANDING THE B-25J MITCHELL

Landing Approaches and Techniques

Instructions for performing controlled landings with or without flaps.

SERVO EXTENSION AND Y-HARNESS CONFIGURATIONS

Diagrams for Elevator, Rudder, Throttle, Aileron, and Flap Connections