Brian Kinwald XXX BK2 - Team Losi Racing

TOOLS REQUIRED
Team Losi has supplied all necessary Allen wrenches and a special wrench that is needed for assembly and adjustments. The following common
tools will also be required: Needle nose pliers, regular pliers, hobby knife, scissors or other body cutting/trimming tools, and a soldering iron
may be necessary for radio installation. 3/16", 1/4", 11/32", and 3/8" nut drivers are optional.
RADIO/ELECTRICAL
A suggested radio layout is provided in this manual. Your high performance R/C center should be consulted regarding specific questions
pertaining to radio/electrical equipment.
HARDWARE IDENTIFICATION
When in question, use the hardware identification guide in each step. For screws, the prefix number designates the screw size and number of
threads per inch (i.e., 4-40 is #4 screw with 40 threads per inch). The second number or fraction designates the length of the screw. For Cap Head
and Button Head Screws, this number refers to the length of the threaded portion of the screw. For Flat Head Screws, this number refers to the
overall length of the screw. Bearings and bushings are referenced by the inside diameter x outside diameter. Shafts and pins are referred to by
diameter x length. Washers are described by inside diameter or the screw size that will pass through the inside diameter. E-clips are sized by the
shaft diameter that they attach to.
MOTORS AND GEARING
The XXX-BK2 includes an 78-tooth, 48-pitch Kevlar spur gear. The overall internal drive ratio of the transmission is 2.56:1. The pinion gear that
is used will determine the final drive ratio. To calculate the final drive ratio, first divide the spur gear size by the pinion gear size. For example,
if you are using a 21-tooth pinion gear, you would divide 78 (spur gear size) by 21 (pinion gear size) 78/21=3.71. This tells you that 3.71 is the
external drive ratio. Next, multiply the internal drive ratio (2.56) by the external drive ratio (in this case 3.71). 2.56 x 3.71 = 9.50. This means that
by using a 21-tooth pinion gear with a 78-tooth spur gear, the final drive ratio is 9.50:1.
Consult your high-performance shop for recommendations to suit your racing style and class. The chart below lists some of the more
common motor types and a recommended initial gearing for that motor. Ratios can be adjusted depending on various track layouts, tire sizes,
and battery types.
RECOMMENDED INITIAL GEARING FOR COMMON MOTORS
TYPE OF MOTOR PINION SPUR
24 o Stock 20-22 78
10-Turn Modified 19 78
11-Turn Modified 20 78
12-Turn Modified 21 78
13-Turn Modified 22 78
14-Turn Modified 23 78
15-Turn Modified 24 78
16-Turn Modified 25 78
TABLE OF CONTENTS
1. INTRODUCTION .................................................................... i
Completed Kit Dimensions .................................................... i
Notes & Symbols .................................................................. i
Kit Manual Organization ....................................................... i
Important Safety Notes ......................................................... i
Tools Required ..................................................................... ii
Radio/Electrical .................................................................... ii
Hardware Identification ........................................................ ii
Recommended Gearing ......................................................... ii
2. BAG A ..................................................................................1-2
3. BAG B ..................................................................................3-7
4. BAG C ................................................................................ 8-11
5. BAG D ............................................................................. 12-19
6. BAG E ............................................................................. 20-23
7. BAG F ................................................................................... 24
8. BAG G ............................................................................. 25-30
9. Checklist Before Your First Run ......................................... 31
10. Tips From the Team ........................................................ 31-33
11. Spare Parts List ............................................................. 34-36
Team Losi is continually changing and improving designs; therefore, the actual part may appear slightly different than the illustrated part. Illustrations of parts and
assemblies may be slightly distorted to enhance pertinent details.
ii