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Hangar 9 Pulse 125 ARF Assembly Manual

Age Requirements

Age Recommendation: 14 years or over. This is not a toy. 

This product is not intended for use by children without 

direct adult supervision.

Safety, Precautions and Warnings

As the user of this product, you are solely responsible for 

operating it in a manner that does not endanger yourself and 

others or result in damage to the product or the property of 

others.
Carefully follow the directions and warnings for this and any 

optional support equipment (chargers, rechargeable battery 

packs, etc.) that you use.
This model is controlled by a radio signal that is subject to 

interference from many sources outside your control. This 

interference can cause momentary loss of control so it is 

necessary to always keep a safe distance in all directions 

around your model, as this margin will help to avoid 

collisions or injury.

•  Always operate your model in an open area away from 

cars, traffic or people.

•  Avoid operating your model in the street where injury or 

damage can occur.

•  Never operate the model out into the street or populated 

areas for any reason.

•  Never operate your model with low transmitter batteries.
•  Carefully follow the directions and warnings for this and 

any optional support equipment (chargers, rechargeable 

battery packs, etc.) that you use.

•  Keep all chemicals, small parts and anything electrical out 

of the reach of children.

•  Moisture causes damage to electronics. Avoid water 

exposure to all equipment not specifically designed and 

protected for this purpose.

Warranty information

WARRAnTy PERiod

Exclusive Warranty- Horizon Hobby, Inc., (Horizon) 

warranties that the Products purchased (the “Product”) will 

be free from defects in materials and workmanship at the 

date of purchase by the Purchaser. 

LiMiTEd WARRAnTy

(a) This warranty is limited to the original Purchaser 

(“Purchaser”) and is not transferable. REPAIR OR 

REPLACEMENT AS PROVIDED UNDER THIS WARRANTY 

IS THE EXCLUSIVE REMEDY OF THE PURCHASER. This 

warranty covers only those Products purchased from an 

authorized Horizon dealer. Third party transactions are not 

covered by this warranty. Proof of purchase is required 

for warranty claims. Further, Horizon reserves the right to 

change or modify this warranty without notice and disclaims 

all other warranties, express or implied. 
(b) Limitations- HORIZON MAKES NO WARRANTY OR 

REPRESENTATION, EXPRESS OR IMPLIED, ABOUT 

NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS 

FOR A PARTICULAR PURPOSE OF THE PRODUCT. THE 

PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE 

DETERMINED THAT THE PRODUCT WILL SUITABLY MEET 

THE REQUIREMENTS OF THE PURCHASER’S INTENDED 

USE.
(c) Purchaser Remedy- Horizon’s sole obligation hereunder 

shall be that Horizon will, at its option, (i) repair or (ii) 

replace, any Product determined by Horizon to be defective. 

In the event of a defect, these are the Purchaser’s exclusive 

remedies. Horizon reserves the right to inspect any and 

all equipment involved in a warranty claim. Repair or 

replacement decisions are at the sole discretion of Horizon. 

This warranty does not cover cosmetic damage or damage 

due to acts of God, accident, misuse, abuse, negligence, 

commercial use, or modification 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 Purchaser must be approved in writing by Horizon before 

shipment.

dAMAgE LiMiTS

HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT 

OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR 

PRODUCTION OR COMMERCIAL LOSS IN ANY WAY 

CONNECTED WITH THE PRODUCT, WHETHER SUCH CLAIM 

IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR 

STRICT LIABILITY. Further, in no event shall the liability of 

Horizon exceed the individual price of the Product on which 

liability is asserted. As Horizon has no control over use, 

setup, final assembly, modification or misuse, no liability 

shall be assumed nor accepted for any resulting damage or 

injury. By the act of use, setup or assembly, the user accepts 

all resulting liability.
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 

unused condition to the place of purchase.
Law: These Terms are governed by Illinois law (without 

regard to conflict of law principals). 

SAFETy PRECAuTionS

This is a sophisticated hobby Product and not a toy. It must 

be operated with caution and common sense and requires 

some basic mechanical ability. Failure to operate this Product 

in a safe and responsible manner could result in injury or 

damage to the Product or other property. This Product 

is not intended for use by children without direct adult 

supervision. The Product manual contains instructions for 

safety, operation and maintenance. It is essential to read and 

follow all the instructions and warnings in the manual, prior 

to assembly, setup or use, in order to operate correctly and 

avoid damage or injury.

QuESTionS, ASSiSTAnCE, And REPAiRS

Your local hobby store and/or place of purchase cannot 

provide warranty support or repair. Once assembly, setup 

or use of the Product has been started, you must contact 

Horizon directly. This will enable Horizon to better answer 

your questions and service you in the event that you may 

need any assistance. For questions or assistance, please 

direct your email to [email protected], or 

call 877.504.0233 toll free to speak to a service technician.

Summary of Contents for Pulse 125

Page 1: ... 5 in 159 cm Wing Area 1050 sq in 68 0 sq dm Weight 8 2 9 5 lb 3 7 4 3 kg Engine Size 61 1 20 2 stroke 90 1 25 4 stroke Motor Size 90 110 brushless outrunner Motor Radio 4 channels or more w 5 servos 4 w electric option Pulse 125 ARF Assembly Manual ...

Page 2: ...wo Stroke Engine 27 Electric Motor Installation 29 Cowling and Spinner Installation Electric Motor 31 Final Assembly 32 Center of Gravity 34 Control Throws 34 Flight Preparations 35 Safety Do s and Don ts for Pilots 35 Daily Flight Checks 35 Age Requirements 36 Safety Precautions and Warnings 36 Warranty Information 36 CE Compliance Information for the European Union 37 2009 Official Academy of Mo...

Page 3: ... x 50mm aluminum tube 2 3mm x 70mm aluminum tube 1 Rubber stopper 1 Self tapping screw 1 Silicon tube 1 Nylon stopper piece 2 10mm x 10mm x 110mm tank brace 1 Wing and Tail Hardware 5 16 x 2 inch dowel with aluminum sleeve 2 6mm x 40mm nylon wing bolt 2 Wing bolts 3mm washer 2 Tail attachment 3mm nylon lock nut 2 Tail attachment Motor Mount Nylon motor mount 2 75mm aluminum standoff 4 4mm x 25mm s...

Page 4: ...eceiver SPM6600 Spektrum DX7 with receiver SPM2710 JR Systems X9303 2 4GHz with receiver JRP2915 Radio Equipment Requirements The following items are recommended when installing the receiver in your aircraft AR7000 7 Channel Receiver SPM6070 DS821 Digital Sport Servo 5 JRPS821 Note Only 4 servos required for EP version 9 inch Servo Extension 2 JRPA097 3 inch Servo Extension 2 JSP98100 or Y harness...

Page 5: ...aircraft You get incredibly advanced aerodynamic modeling that simulates every possible aspect of real world flight The first Hangar Pack HANS4010 will add even more aircraft to FS One This latest edition includes ten new planes and helis from your favorite brands including Hangar 9 E flite and Align You ll be able to fly aircraft that are only available on FS One such as the T REX Blade CX2 Blade...

Page 6: ... Step 5 Mix a small amount of 30 minute epoxy Apply the epoxy to both the tail gear wire where it enters the rudder and to the hole in the rudder Note Use a paper towel and rubbing alcohol to remove any excess epoxy before it cures Excess epoxy could cause the rudder and fin to bind and increase the load on the rudder servo Step 6 The rudder and fin can now be joined together While the epoxy cures...

Page 7: ...ator stabilizer assembly 3mm washer 2 3mm locknut 2 Tools and Adhesives Nut driver 5 5mm Thin CA Important Check and break in the elevator hinges before starting this section of the manual Apply thin CA to any loose hinges Step 1 Position the stabilizer on the stabilizer saddle at the rear of the fuselage Step 2 Insert the threaded rods from the fin through the holes in the stabilizer and into the...

Page 8: ...er 1 4 inch 6mm foam Y harness Elevator linkage wire 27 5 inch 698mm Rudder linkage wire 28 5 inch 724mm Tools and Adhesives Phillips screwdriver 1 2 Side cutters Straight edge Thin CA Pin drill Drill bit 5 64 inch 2mm Step 1 Slide the hatch on the fuselage forward to disengage the magnets at the rear of the hatch Lift the hatch up at the rear and remove it from the fuselage Step 2 Use a 1 Phillip...

Page 9: ...eiver battery in foam and secure it in position using a hook and loop strap not included Step 7 Plug the rudder and elevator servo leads in the correct ports of your receiver Also plug the aileron Y harness and lead from the switch harness at this time Step 8 Wrap the receiver in foam and secure it in position as shown Note The remote receiver will be mounted later in the manual Its location will ...

Page 10: ...the center of the servo horn for the pushrod wires Step 12 Remove the horns from the rudder servo and use side cutters to trim the arm from the horn that will not be used Note Removing the excess arm will help in preventing interference between the arm and other components inside the fuselage Step 13 Insert the Z bend from the 281 2 inch 724mm pushod in the hole enlarged earlier Step 14 Slide the ...

Page 11: ...at Steps 12 through 17 to install the 27 5 inch 698mm linkage wire for the elevator Attach the clevis to the center hold on the elevator control horn Aileron Servo Installation Required Parts Wing panel right and left Metal clevis 2 Clevis retainer 2 2mm nut 2 Wing dowel 2 Servo with hardware 2 9 inch 228mm servo entension 2 Aileron linkage wire 3 5 inch 90mm 2 Tools and Adhesives Thin CA Mixing c...

Page 12: ...m the wing Tie the end around the servo extension Step 5 Use the string to pull the servo lead through the wing and out the hole as shown Step 6 Secure the servo in the wing using the screws included with the servo Make sure the output of the servo faces the aileron Step 7 Remove the stock servo horns from the servo Center the servo using the radio system Use a 180 degree servo horn on the servo Y...

Page 13: ... 30 minute epoxy to glue the wing dowel in the leading edge of the wing Remove any excess epoxy using a paper towel soaked in rubbing alcohol Step 12 Repeat Steps 1 through 12 to prepare the opposite wing panel Landing Gear and Wheel Installation Required Parts Fuselage Aluminum landing gear Wheel axle with nut 2 Main wheel 2 Tail wheel Wheel pant right and left 3mm x 8mm button head screw 4 2mm w...

Page 14: ...the collars more secure on the axle Step 4 Position one of the wheel collars 3 8 inch 9 5mm from the edge of the gear as shown Tighten the setscrew to secure the collar to the axle Note Always use threadlock on metal to metal fasteners to prevent them from vibrating loose Step 5 Place the wheel on the axle then use another wheel collar to secure the wheel Make sure the collar is not too tight agai...

Page 15: ...the tail wheel on the tail gear wire Note Always use threadlock on metal to metal fasteners to prevent them from vibrating loose Four Stroke Engine Installation Required Parts Fuselage 4mm washer 8 4mm locknut 4 Throttle pushrod with clevis Brass pushrod connector with backplate 4mm x 25mm socket head bolt 8 Engine mount rail right and left Plywood engine mount template Tools and Adhesives Drill L...

Page 16: ...Step 3 Remove the template and use a 5 32 inch 4mm drill bit to enlarge the four holes drilled in the previous step Step 4 Use four 4mm x 25mm socket head screws and four 4mm washers to secure the nylon mounts to the firewall Note the positioning of the mounts as shown in the photos Step 5 Position the engine on the mount so the front face of the driver washer is 51 2 inches 140mm forward of the f...

Page 17: ...n move freely Step 9 Use a drill and a 5 32 inch 4mm drill bit to drill the four holes through the mount to secure the engine Hint It is suggested to use a drill press to drill these holes This will guarantee they are aligned straight in the mount Step 10 Check the direction of the carburetor in relationship to the engine If it does not look like the position in the photo below follow the instruct...

Page 18: ... screws four 4mm washers and four 4mm nylon locknuts The washers will be on the bottom side of the mount between the locknut and nylon mount Step 14 Thread a servo mounting screw into each of the holes in the radio tray This will cut the threads for the screws in preparation of the next step Step 15 Place 2 3 drops of thin CA in each hole to harden the surrounding wood This harder surface will mak...

Page 19: ...e setscrew in the pushrod connector to secure the wire to the carburetor arm Use side cutters to trim any excess wire extending beyond the connector Note Always use threadlock on metal to metal fasteners to prevent them from vibrating loose Two Stroke Engine Installation Required Parts Fuselage 4mm washer 8 4mm locknut 4 Throttle pushrod with clevis Brass pushrod connector with backplate 4mm x 25m...

Page 20: ...Step 3 Remove the template and use a 5 32 inch 4mm drill bit to enlarge the four holes drilled in the previous step Step 4 Use four 4mm x 25mm socket head screws and four 4mm washers to secure the nylon mounts to the firewall Note the positioning of the mounts as shown in the photos Step 5 Position the engine on the mount so the front face of the driver washer is 51 2 inches 140mm forward of the f...

Page 21: ...e to the mount using four 4mm x 25mm socket head screws four 4mm washers and four 4mm nylon locknuts The washers will be on the bottom side of the mount between the locknut and nylon mount Step 9 Slide the throttle pushrod in the pushrod tube Bend the pushrod so the clevis can be connected to the innermost hole of the carburetor arm Slide the clevis retainer over the forks of the clevis so it won ...

Page 22: ...ay using the screws provided with the servo Step 13 Remove the servo horn from the servo Use a pin drill and 5 64 inch 1 5mm drill bit to enlarge the hole that is 1 2 inch 13mm from the center of the center of the horn Step 14 Use side cutters to remove any excess arms from the servo horn so they don t interfere with the operation of the throttle Step 15 Insert the brass pushrod connector in the h...

Page 23: ...be straight Copper fuel tube bent Fuel tank stopper Steel clunk Clunk fuel line Stopper clamp 2mm locknut Nylon tie wrap Fuel tubing gas or nitro 2mm x 12mm machine screw 1 4 inch 6mm foam rubber Tools and Adhesives Phillips screwdriver 1 Pliers Side cutter Double sided tape Hobby knife with 11 blade Important Two types of fuel tubing have been included for your model One is for use with nitrometh...

Page 24: ...ve the stopper and shorten the fuel tube slightly check and repeat until it can move freely inside the tank Step 4 Use a 2mm x 12mm machine screw and 2mm locknut to secure the stopper clamp around the stopper This will keep the stopper secure on the neck of the fuel tank Step 5 Attach the fuel line to the clunk and vent lines of the tank The line will be trimmed when it is connected to the engine ...

Page 25: ...er on the side of the fuselage opposite the throttle servo The antenna wires should face up and down for the best reception of your radio system Cowling and Spinner Installation Four Stroke Engine Required Parts Fuselage Cowling Spinner backplate Spinner cone 3mm x 10mm self tapping screw 2 3mm x 8mm button head screw 4 Tools and Adhesives Cardstock Low tack tape Felt tipped pen Hobby scissors Phi...

Page 26: ...to the carburetor Step 5 Remove the cowl and trim it using the lines made in the previous step With the engine back on the firewall check to make sure the cowl will fit over the engine Take your time trimming the cowl to achieve the best fit Use a rotary tool and sanding drum to smooth any rough edges around the engine Step 6 Use the instructions provided with the engine to attach the muffler Trim...

Page 27: ...rts Fuselage Cowling Spinner backplate Spinner cone 3mm x 10mm self tapping screw 2 3mm x 8mm button head screw 4 Tools and Adhesives Cardstock Low tack tape Felt tipped pen Hobby scissors Phillips screwdriver 2 Rotary tool with sanding drum Hex wrench or ball driver 2mm Step 1 Cut a piece of cardstock to fit around the engine as shown This will be the template for trimming your cowling Step 2 Rem...

Page 28: ... Use a rotary tool and sanding drum to smooth any rough edges around the engine Step 6 Use the instructions provided with the engine to attach the muffler Trim and connect the pressure line from the fuel tank to the muffler Step 7 Slide the spinner backplate on the engine shaft Step 8 Slide the propeller on the engine shaft Use the hardware provided with the engine to secure the propeller The smal...

Page 29: ...ife to remove the covering on the bottom of the fuselage to allow air to pass though the fuselage Use a covering iron to seal the edges around the opening so the covering does not come loose Step 2 Slide the hatch on the fuselage forward to disengage the magnets at the rear of the hatch Lift the hatch up at the rear and remove it from the fuselage Step 3 Use a hobby knife and 11 blade to remove th...

Page 30: ... four 4mm x 25mm socket head screws and four 4mm washers to attach the four aluminum motor standoffs to the firewall Note Always use threadlock on metal to metal fasteners to prevent them from vibrating loose Step 8 Prepare the motor by installing the X mount and propeller adapter Note Always use threadlock on metal to metal fasteners to prevent them from vibrating loose Step 9 Secure the speed co...

Page 31: ...nd battery tray to keep them from sliding in the fuselage Cowling and Spinner Installation Electric Motor Required Parts Fuselage Cowling Spinner backplate Spinner cone 3mm x 10mm self tapping screw 2 3mm x 8mm button head screw 4 Tools and Adhesives Tapered reamer Phillips screwdriver 2 Hex wrench or ball driver 2mm Rotary tool and sanding drum Step 1 Use a rotary tool and sanding drum to remove ...

Page 32: ...tions that could damage the airframe or motor bearings Step 6 Secure the propeller using a box wrench and the hardware from the adapter Step 7 Secure the spinner cone to the backplate using two 3mm x 10mm self tapping screws Final Assembly Required Parts Fuselage Canopy Wing panel left and right Wing bolt plate Aluminum wing tube 6mm x 40mm nylon wing bolt 2 Tools and Adhesives Canopy glue Medium ...

Page 33: ...nels will fit tightly together Step 4 Connect the leads from the aileron servos into the leads coming from the aileron port of the receiver Step 5 Place the wing on the bottom of the fuselage Slide the wing forward so the wing dowels go into the hole in the fuselage Step 6 Place the wing bolt plate in position The rounded edges of the plate face to the front of the aircraft Step 7 Secure the wing ...

Page 34: ...rudder should also move right Reverse the direction of the servo at the transmitter if necessary Step 2 Check the movement of the elevator with the radio system Moving the elevator stick toward the bottom of the transmitter will make the airplane elevator move up Step 3 Check the movement of the ailerons with the radio system Moving the aileron stick right will make the right aileron move up and t...

Page 35: ... of control of your aircraft Strong winds can cause similar problems Do not point the transmitter antenna directly toward the model The radiation pattern from the tip of the antenna is inherently low Do not take chances If at any time during flight you observe any erratic or abnormal operation land immediately and do not resume flight until the cause of the problem has been ascertained and correct...

Page 36: ...zon s sole obligation hereunder shall be that Horizon will at its option i repair or ii replace any Product determined by Horizon to be defective In the event of a defect these are the Purchaser s exclusive remedies Horizon reserves the right to inspect any and all equipment involved in a warranty claim Repair or replacement decisions are at the sole discretion of Horizon This warranty does not co...

Page 37: ...as Visa MasterCard American Express and Discover cards If you choose to pay by credit card please include your credit card number and expiration date Any repair left unpaid or unclaimed after 90 days will be considered abandoned and will be disposed of accordingly Please note non warranty repair is only available on electronics and model engines United States Electronics and engines requiring insp...

Page 38: ...en and where required by rule helmets must be properly worn and fastened They must be OSHA DOT ANSI SNELL or NOCSAE approved or comply with comparable standards RADIO CONTROL 1 All model flying shall be conducted in a manner to avoid over flight of unprotected people 2 I will have completed a successful radio equipment ground range check before the first flight of a new or repaired model aircraft ...

Page 39: ...39 Hangar 9 Pulse 125 ARF Assembly Manual SAITO 1 25 EVOLUTION 1 20 E FLITE POWER 110 3 69 inch 91 73mm 3 69 inch 97 73mm Engine Mounting Template ...

Page 40: ...15369 Printed 07 09 2009 Horizon Hobby Inc 4105 Fieldstone Road Champaign Illinois 61822 USA 877 504 0233 horizonhobby com Hangar 9 com ...

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