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NOTE: While in the programming mode, no power is applied to 
the motor.

Battery Selection:  When the ESC is powered on, the LED will be 
flashing for 2 seconds to indicate the Selected Battery Type.  
During this time the user can press the key to toggle between 
LiPo and NiMH/NiCd modes.  After the key has been pressed 
(battery type selected), the LED will flash for 2 more seconds.

A.  Turn on ESC and push button once within 2 seconds, push 
again to toggle between modes.
B.  Red light indicates LiPo mode (with 6 volt cut-off)
C.  Green light indicates NiMH/NiCd mode

One Touch Endpoint Setup

NOTE:  Please be sure to set all throttle trim settings to neutral 
before performing an endpoint setup.

A.  Hold button and turn on ESC until the Red/Green light 
comes on.  Once on, release button.
B.  Pull trigger to full throttle position until the green light goes 
from flashing to solid.  Once solid, your forward endpoint is 
now set.
C.  To set reverse endpoint, push the trigger into the full 
reverse position until the flashing red light turns solid.  At this 
point your reverse/brake endpoint is now set.
D.  Return trigger to neutral setting.  The green light will now 
be solid and you are ready to go!

To change modes on your MSC-12L hold the set up key for 
over 5 seconds while in neutral.  Once you find desired mode, 
simply release the key and you are ready for action.

Forward/Reverse mode—Solid Green LED
Forward Only mode—Fast Flashing Green LED
Practice mode—Slow Flashing Green LED
Crawler mode*—Solid Green and Red LED

*NOTE: Crawler mode is for use in rock crawling vehicles only.  

Do not use this mode with other vehicles. Doing so may 
damage the vehicle.

• 

Lipo, NiMH/NiCd compatible

• 

4 user selectable modes—Forward/reverse, Forward only 

race, Practice mode with slow acceleration, and Crawler.

• 

High power FET control with proportional forward and 

reverse.

• 

High frequency design delivers smooth speed transition.

• 

Thermal Overload Protection prevents damage due to over 

current conditions.

• 

Pre-wired with EC3 battery plug and bullet-style motor 

connectors.

• 

Designed to operate with stock motors (12 turns or higher).

• 

Push-button programming with one touch setup.

• 

Water Resistant

Operation..............................Proportional forward, proportional 

reverse with braking delay

Input Voltage ........................4-cell (4.8 volts) to 6-cell (7.2 volts) 

DC NiMH/NiCd or 2S LiPo (7.4 volts)

Peak Current ........................1000A Forward and 350A Backwards
Continuous Current ..............250A Forward and 125A Backwards
Full-On Resistance ...............0.0014 Ohms Forward 

0.0028 Ohms Backwards

Frequency ............................1kHz
BEC output ...........................5V DC, 1 amp max. at 7.2V
Overload Protection..............Thermal
Dimensions ..........................1.575in x 1.575in x 1.063in 

(40mm x 40mm x 27mm)

Weight ..................................1.87 oz (53 g)

The MSC-12L comes pre-wired with a EC3 connector. Use battery 
packs from 4-cell (4.8-volt) to 7-cell (8.4-volt) sub-C size battery 
packs or with 2S LiPo packs (7.4-volt).
1. Be sure the on/off switch is in the “off” position.
2. Connect a fully charged battery pack to the speed control’s 
battery connector.

1. Set the “throttle reversing” switch to the NORMAL position.
2. Set the “throttle trim” to the CENTER position.

Steering servo operates but the motor does not run 

Symptom

Solution

Programming is not complete. Reprogram the ESC by following the programming instructions. 

Speed control connected to receiver incorrectly.  

Motor defective. Test motor independently, repair or replace as needed.  

Low batteries. Charge as needed.  

Overload Protection enabled. Check motor and connections.

Steering and motor do not function 

Receiver wired incorrectly. Check polarity and orientation of controlplugs.

Batteries discharged. Recharge or replace.

Full speed not attainable  

Transmitter adjusted improperly.

ESC programmed incorrectly. Reprogram.

Motor slows but will not stop  

Throttle trim may be set improperly.  

ESC program does not match transmitter.  Reprogram ESC.

Reduced radio range/Interference  

Motor capacitors broken/missing. Repair or replace.  

Motor noise. Move receiver further away from ESC, motor and wiring

Transmitter batteries low. Replace batteries.

Features

Specifications

Connecting the Battery

Adjusting the Transmitter

Speed Control Programming

Selecting Speed Controller Modes

Troubleshooting Guide

8

MSC-12L Fwd/Rev ESC

Summary of Contents for Night Crawler

Page 1: ...or registering your Losi Product you will be automatically entered for a chance to win the Losi Pick Your Prize Sweep stakes The winner will be allowed to select a total prize package of 1 000 retail...

Page 2: ...Product Online Register your 1 10 Night Crawler now and be the first to find out about the latest option parts product updates and more Log on to www LOSI com and follow the product registration link...

Page 3: ...d General The 1 10 Night Crawler is not a toy This product is not intended for use by children without direct adult supervision Avoid an area that has many pedestrians or crowds of people Keep in mind...

Page 4: ...V power source to charge your batteries You would need to use or purchase a hobby grade 12V power supply before charging If you are going to be using a charger other than a peak detection charger it i...

Page 5: ...LED Light Body Mount Digital Servo 2 4GHz DSM Reciever EC3 Battery Connector Electronic Speed Control NiMh LiPo Compatible On Off Switch Motor Battery Strap 5 The Losi 1 10 Night Crawler Overview...

Page 6: ...l Rate Steering Adjustment Antenna Steering Trim TH Trim Steering Wheel Throttle Brake Trigger Auxiliary Channel Throttle Channel Steering Channel Binding Port Throttle Trim TH Trim 6 The Losi LSR 300...

Page 7: ...Motor Digital Servo Bind Plug One Touch Setup Button Male EC3 Battery Connector MSC 12L 12T ESC MRX 3000 DSM Receiver 7 1 10 Night Crawler Electronics System Overview...

Page 8: ...ired with EC3 battery plug and bullet style motor connectors Designed to operate with stock motors 12 turns or higher Push button programming with one touch setup Water Resistant Operation Proportiona...

Page 9: ...ottom of the transmitter by sliding it away from the base of the handle Install the four 4 AA size batteries into the base noting polarity when inserting each battery Reinstall the battery cover by sl...

Page 10: ...de the battery under the straps Pull tight the straps and lay the strap on the exposed loop surface When installing optional Crawler LiPo packs remove both hook and loop straps and install one strap t...

Page 11: ...to the Losi LSR 3000 transmitter see page 9 Use alkaline or rechargeable batteries only 4 Install the battery pack see previous page The battery pack should be fully charged before installation 5 Turn...

Page 12: ...es such as 27MHz or 75MHz neither will you experience any overlapping interference from other 2 4GHz systems Transmitter The Losi LSR 3000 transmitter has several adjustments available to increase you...

Page 13: ...icle Notice the LED is now blinking 4 You are now ready to turn on the transmitter You should notice on the back of the transmitter a similar blinking LED under a translucent cover 5 Both the receiver...

Page 14: ...he steering assembly The vibrations of running off road tend to loosen screws and nuts Be careful driving when the battery is nearly discharged or the car is running slowly You could lose enough power...

Page 15: ...ould not be tight and if you look up close there should be slight movement of the spur before contacting the teeth on the pinion gear Gear Ratio When using higher gear ratios bigger pinion it is extre...

Page 16: ...s are good and or if rechargeable are fully charged Replace them if needed If the power light is blinking then the transmitter batteries are weak and should be replaced Short radio range If the radio...

Page 17: ...Damage Limits CONT D If you as the Purchaser or user are not prepared to accept the liability associated with the use of this Product you are advised to return this Product immediately in new and unu...

Page 18: ...3 or e mail us at productsupport horizonhobby com with any questions or concerns regarding this product or warranty United Kingdom Electronics and engines requiring inspection or repair should be ship...

Page 19: ...ted below followin the provisions of the European R TTE directive 199 5 EC EN 300 328 Technical requirements for Radio equipment EN 301 489 1 301 489 17 General EMC requirements Signed for and on beha...

Page 20: ...49 99 LOSA99150 Losi Nut Driver Set US 4pc 54 99 LOSA99162 Losi Nut Driver 7mm 14 99 LOSA99170 Shock Matching Tool 29 99 LOSA1030 Spindle Carrier Set 9 99 LOSA1033 Upper Suspension Link Mount 3 99 LO...

Page 21: ...29 LOSA4012 LOSA1033 LOSA6206 LOSA6308 LOSA4037 LOSA4037 LOSA6206 LOSA6956 LOSA6358 LOSA6358 LOSA3175 LOSA6947 LOSA6947 LOSA3175 LOSB2370 LOSA6229 LOSA4037 LOSA4037 LOSA4037 LOSA1030 LOSA6256 LOSA3194...

Page 22: ...LOSA1034 LOSA4039 LOSA6245 LOSA6256 LOSB9996 LOSB9996 LOSB9996 LOSA8200 LOSB2460 LOSB2290 LOSB9499 LOSB3012 LOSB3015 LOSB3012 LOSA6213 LOSA6213 LOSA6206 LOSA6206 LOSA6947 LOSA6947 LOSA6109 LOSB3014 LO...

Page 23: ...LOSA6947 LOSA6947 LOSA4012 LOSA6294 LOSA6206 LOSA6358 LOSA3174 LOSA6358 LOSA2030 LOSA3184 LOSA6937 LOSA3185 LOSA6956 LOSA2030 LOSA3194 LOSB3525 LOSA3175 LOSA6956 LOSA1033 LOSA6221 LOSA6210 LOSA6206 LO...

Page 24: ...LOSA5022 LOSB2827 LOSA5015 LOSA5012 LOSA5079 LOSA6100 LOSA5046 LOSB2828 LOSA5156 LOSA5023 LOSA6206 LOSA6258 LOSB7002 LOSB7002 LOSA7020 LOSA7682B 21 1 10 SCALE ELECTRIC READY TO RUN ROCK CRAWLER...

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