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GS Racing Storm Unlimited Truck Championiship Edition Operation Manual
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GS Racing Storm Unlimited Truck Championiship Edition Operation Manual

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Introduction
Congratulations and thank you for choosing the GS Racing Storm Unlimited Truck Championship Edition,
SUT-CE for short. The SUT-CE is a limited edition, modified, factory spec replica of the truck we have used
to win numerous titles including back to back National Championships. Only 1000 will be produced, so if you
are reading this, you belong to an elite club of RC racers. New for the SUT-CE are the redesigned and longer
chassis, heavy duty suspension mounts, ultra thick steering plate, and Korn Designs pre-painted body. The truck
comes assembled with our team setup installed, so all you have to do is install radio gear, glue tires, and hit the
track. The SUT-CE is a highly developed racing vehicle and is not designed to be an entry level model. Some
mechanical experience and/or parental supervision are required. This manual contains all the basic instructions
to finish assembly of, and break in, operation, and maintenance of your SUT-CE. It is critical that you read all
the instructions in this, and any/all accompanying guides, in order to operate your model correctly and avoid
serious damage. Your hobby dealer cannot, under any circumstances, accept a model for return or exchange
that has been run. We have taken the time to build your truck with our best setup, take the time to follow our
instructions to ensure winning results with your SUT-CE. If you should ever have any questions or need help
with this or any GS product, please feel free to contact our official GS Racing dealers and distributors, as they
will be happy to help you. Good luck and good racing!
Safety Precautions
This is a high performance radio controlled model which needs to be operated with caution and common
sense. Failure to operate your model in a safe and responsible manner could result in personal injury and/or
property damage. It is your responsibility to read and follow all safety precautions. The SUT-CE is not intended
for children under the age of 14 without adult supervision. GS Racing shall not be held liable for any loss or
damages, whether direct, indirect, act of nature, arising from the abuse or misuse of this product or any other
product required while operating this model.
-Fuel can be dangerous is improperly handled. Follow all of the manufacturer's suggestions.
-Always keep fuel in a cool area and never use near flame, sparks, or while smoking.
- Keep fuel and other flammables out of the reach of children.
-Always run your model in a well ventilated area outdoors. Never run your model indoors.
-All parts of the engine and exhaust can become extremely hot during, and after use. Be careful not to touch
these parts especially when refueling, or making repairs.
- This model creates high levels of noise. Use ear protection is you find noise objectionable.
-This model is controlled by a radio frequency that is vulnerable to interference from many outside sources.
This interference can cause a loss of control so it is necessary to operate this model in an open area to avoid
personal, or property damage. Always ensure no one is using your frequency before turning on your radio or
model.
- Read, understand, and follow the instruction included with your radio gear.
- Never operate your model near people or property. The speed of this model has the potential for injury and
or damage to people and or property.
Never use anything other than model car fuel.
Never operate the model with a low battery. If the response becomes slow, stop immediately and replace
batteries.
Never run the model without a clean and properly installed air cleaner.
Never run the model lean or allow the engine to overheat.
OPERATION GUIDE
2

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Summary of Contents for GS Racing Storm Unlimited Truck Championiship Edition

  • Page 1 It is your responsibility to read and follow all safety precautions. The SUT-CE is not intended for children under the age of 14 without adult supervision. GS Racing shall not be held liable for any loss or damages, whether direct, indirect, act of nature, arising from the abuse or misuse of this product or any other product required while operating this model.
  • Page 2 Required Equipment You will need the following items to operate your new SUT-CE: -2 channel surface type radio system, high speed/torque servos suggested -7.2v 6cell battery Pack (for drill start) -4 “AA” size batteries or 5 cell 6v receiver pack -20% to 30% percent model car fuel –glow plug igniter –fuel bottle –CA or tire glue –Air Filter Oil.
  • Page 3 Tires Refer to Step 44 of this manual. Remove the wheels from the model. Glue the tires as described. Reinstall the wheels to the model. Radio Install the radio batteries as recommended by the manufacturer. Next, refer to Step 28 of this manual. Working backwards to Step 25, remove the radio plate and install the servos, receiver, switch, antenna, and receiver battery.
  • Page 4 Stopping Engine There are a few ways to safely shut off the engine. You can pinch the fuel line with needle nose piers, or you can use the handle of a wrench to stop the engines flywheel. To do this, press the handle against the flywheel to stop the engine’s rotation.
  • Page 5 Understanding Engine Adjustments The carburetor has a high speed needle extending up in the brass tube from the top near the air filter. This needle adjusts the air/fuel mixture. The low speed needle is located lower on the carburetor, facing the throttle servo, inside the rubber boot. The mixture is referred to as being “rich”...
  • Page 6 Idle Speed Screw: As you turn this needle clockwise it increases the carburetor opening at idle and increases the idle speed. Turning it counter-clockwise decreases the opening and idle speed. Warranty and Technical information The GS-R25MT engine included in the SUT-CE is designed for racing. The GS-R25MT is only warranted against original factory defects in materials and/or workmanship.
  • Page 7 TROUBLE SHOOTING GUIDE Problem Things To Check Engine won’t start: Out of fuel Spoiled or incorrect fuel Glow igniter not charged Engine is overheated Engine flooded Air filter clogged Exhaust blocked Glow plug damaged Engine won’t turn over: Engine flooded Engine seized Clutch seized Engine starts then stalls:...
  • Page 8 Step 1. Assemble parts in the order shown. Slide bearing (2) onto the Differential Case (1). Build the front and rear diffs with front/rear out drives (3) and build the center diff with center out drives (4). The front/rear out drives are round, while the center out drive has a flat profile.
  • Page 9 Carefully fill one of the diffs with 10,000cps GS Racing Diff Oil (mark it as front) and the other with 3,000cps GS Racing Diff Oil (mark it as rear). Fill to just above where the pins cross. Place the large crown gear assembly over the diff housing.
  • Page 10 Step 4. Mount the Shock Bushings (24) to the outside hole of the Shock Tower (201) with 2 3x23mm Cap Screws (336) using a mild strength thread-locking compound. Mount the shock tower assembly to the front gear box using 6 3x12mm BH/ST screws (329).
  • Page 11 Step 6. Assemble Brake Plates (32) and Brake Pads (33) as shown using CA glue. Note direction and location of each piece. Mount the brake plate-pad assemblies to both Center Diff. Mounts (31) with two 3x12mm Cap Screws (337). Adjust the floating-brakes by tightening the Cap Screws evenly with both Brake Disks (34) in between the brake pads until there is the slightest pressure (just until they touch, then back off 1⁄4 turn or binding will occur).
  • Page 12 Step 7. Insert Brake Cam Lever (39) into the Front Brake Cam (36) (the shorter of the two brake cams). Apply a mild strength thread-locking compound to the 3x4mm Set Screw (338) and tighten the Brake Cam Lever into position in the Front Brake Cam. Set both Brake Cams into place in the Center Diff. Mount making note of the front end as indicated in the illustration.
  • Page 13 Step 8. Apply a light coat of grease between the touching surfaces of the servo saver arms B and C. Slide the Servo Saver Spring (45), Servo Saver Arm-C (43), Servo Saver Arm-B (42) onto the Adjustable Servo Saver Pipe (178).
  • Page 14 Step 10. You will make two upper suspension arms. Note the 5x25 turnbuckles have a reverse thread on one side. The side of the turnbuckle with the extra center groove is a left hand thread, meaning a counter-clockwise rotation will tighten it into plastic. Thread the M5x25 Turnbuckle (55) into the Front Upper Suspension Arm. Thread the nylon Ball End (54) on the other end of the Turnbuckle, until there is a 8.2mm gap between them.
  • Page 15 Step 12. Fit Bearings (2) into the Knuckle Arm (59, 60) and then slide the Universal Shaft through the bearings. Place the Knuckle Collars (64) into the holes of the C-hub (61, 62) and carefully slide the assembled knuckle into the C-hub.
  • Page 16 Step 13. Assemble parts in the order shown making note of the right and left sides. Fit the right side C-hub assembly into the Front Lower Suspension Arm (65) and push the small Lower Suspension Hinge Pin (69) through the aligned holes. Note direction of both the suspension arm and the hinge pin.
  • Page 17 Step 15. Study the insert illustration to understand how the Rear Toe-In Adjusters (76) work. The holes in the toe-in adjusters are off center. We suggest that you start with 0.5 degrees of rear outboard toe-in. The rear suspension mount you will install later provides 3 degrees of rear toe, for a total of 4 degrees. Push the Rear Toe-In Adjusters, the Bearings (2) and the Rear Universal Drive Shafts (181) into the Rear Hub Carriers (74, 75) as shown.

  • Page 18: Rear Suspension

    REAR SUSPENSION Step 17a. Attach the Rear Anti-Squat Mount (212) to the front portion of the rear bulkhead as shown using 2 3.5x25 RH/ ST screws. Turn assembly around and insert 4mm hinge pins (214) into mount. Secure with 3mm set screws. Slide rear lower arm assemblies over the hinge pins, making sure both left and right sides are correctly aligned.

  • Page 19: Front Suspension

    FRONT SUSPENSION Step 18a. Attach the Front Lower Sus. Rear Mount (211) to the rear portion of the front bulkhead as shown using 2 3.5x25 RH/ST screws. Turn assembly around and insert 4mm hinge pins (214) into mount. Secure with 3mm set screws.
  • Page 20 BH/ST BH/ST BH/ST BH/ST Step 19. Assemble 4 sets of linkages by installing 1 short (88) and 1 long (89) ball end to 3x12 set screw (351). Tighten ball ends until snug. Press 5.4mm ball (94) into short ball end. Note that flange on ball will face the arm. Press stabilizer ball (92) into other end of linkage.
  • Page 21 Step 21. Thread one 6.8mm Ball End (85) onto each end of the 4x40mm Turnbuckle (86) and adjust so that there is a 22.5mm gap between the ball ends, as shown in the insert. Push a 6.8x6mm Ball (56) into one of the 6.8mm Ball Ends and a 6.8x9 Pivot Ball (87) into the other until they snap in.
  • Page 22 Step 22. Assemble parts in the order shown. Place Side Guard (307(L), 308(R) onto chassis and secure with 3 pcs of 3x8mm FH/ST Screws (330). Repeat for other side.
  • Page 23 Step 23. Place the front center drive shaft (215) into the front outdrive of the center diff. Place the rear center drive shaft (216) into the rear outdrive of the center diff. Lift the center assembly just off the chassis and slide the two 3mm Center Gear Box Spacers (203) in place under the center gearbox.
  • Page 24 Step 25. In your kit, you will find plastic servo mounts and hardware. Use these parts to assemble your radio plate. Place the servos in the Radio Plate (202) and mount using the eight 3x12 BH/ST Screws (329) and Servo Mounts (102) as shown.
  • Page 25 Step 27. Slide the Antenna Tube (109) about 1” into the Antenna Tube Holder (110). Mount Posts (108) to the bottom of the radio plate with three 3x12 BH/ST Screws (329). Mount the Receiver Box Cap (106) onto the Receiver Box (107) and the Antenna Tube Holder with the radio plate in place using four 3x15mm BH/ST Screws (358).
  • Page 26 Engine/Clutch Step 29. Slide Cone Collet (116) and Flywheel (115) onto the crankshaft followed by the Pilot Nut (117). Secure the Flywheel and tighten the Pilot Nut firmly. Place the Clutch Springs (120) into the groove of the Clutch Shoes (119).
  • Page 27 4x8BH Hex Screws Step 30. Mount the engine with four 4x8BH hex screws (378) using a mild strength thread-locking compound. Place a small empty plastic bag (like the bags used for R/C car parts) between the clutch bell and spur gear. Press the gears together as you tighten down the engine mount screws.
  • Page 28 Step 32. Thread the Ball Cup (134) onto the Throttle Rod (368) until tight. Apply a small amount of mild-strength thread-locking compound to the 3x4mm Set Screws (338) and install into the 2mm Stoppers (136) and the Adjuster Knobs (137) but do not tighten yet. Slide a 2mm Stopper, Linkage Spring (135), Throttle Rod Support (131) and another 2mm Stopper in that order.
  • Page 29 Step 34. Study and understand the illustration first before you turn on your radio to check the linkage. Adjust linkage per illustration. When you are satisfied that the linkage is functioning correctly make sure all the 2mm Stoppers are tight and secure. When the throttle is in neutral, the servo horn should be parallel with the throttle servo, the throttle should be closed (there should be about a 0.7mm gap inside the carb), and the brakes should be disengaged.
  • Page 30 Step 36. Mount the Muffler Stay to the chassis with the 4x8mm FH Screw (363) using a mild thread- locking compound. Slide the Coupler (140) onto the Muffler (141) and then onto the exhaust manifold, securing with the Tie Wraps (145). Fit the Muffler Stay Wire (143) into the Muffler Stay and Muffler.
  • Page 31 Step 39. Push the shock end up 5mm. Use GS Racing 35wt. shock oil for the front and 30wt. for the rear as a baseline. Fill halfway, pull the shock end down, and continue to fill until the oil level is just below the top of the shock body.
  • Page 32 Shocks Long/Rear Medium/Front Step 40. Place the Spring Collar (165), Shock Spring (168) and the Spring Cup (166) on the shock spring and over the shock body and shaft. Insert as many Spring Adjusters (169-172) to set the ride height to your liking. We suggest using the amount of adjusters needed to set the ride height of the truck so that the suspension arms are at or just above level.
  • Page 33 Step 42. Press the 5.8mm balls (173) into the shock caps and ball ends. Slide the shocks over the cap screws in the shock towers and fasten into place using the 3x8 washers (51) and 3mm Lock Nuts (342). Slide the shock bottoms into the lower suspension arms and using the middle hole, fasten into place using 3x16 BH Screws (355).
  • Page 34 Step 44. The tires and foams included in your kit may vary from those shown in the diagram. Clean the inside bead of the tire as well as the wheel with rubbing alcohol before gluing. Place the Foam Insert into the Tire so that it is centered and true, with as few wrinkles and folds as possible.
  • Page 35 Step 46. The body included in your kit comes pre- painted and pre-cut from the factory. You may have to remove the protective film on the outside of the body before installing the wing and applying decals. Mount the Rear Wing (328) to the rear bed-deck of the body with 3x6mm RH Screws (331), 3x8 washers (51 )and 3mm Nuts (342) as shown.
  • Page 38 SUT CE Key No./Spare Parts No. List SUT CE Key No./Spare Parts No. List Part Name Q’ty Used Item No. Part Name Q’ty Used Item No. Diff. Case GS-ST009 Flywheel GS-ST002 8x16 Ball Bearing GS-690003 Cone Collet GS-ST002A Diff. Out Drive F/R GS-ST028 Pilot Nut GS-ST032...
  • Page 39 SUT CE Key No./Spare Parts No. List SUT CE Key No./Spare Parts No. List Part Name Q’ty Used Item No. Part Name Q’ty Used Item No. M3 Lock Nut GS-603007 M2.5 Lock Nut GS-ST105 4x4 Set Screw GS-610020 Shock Spring, Medium GS-ST086 5x5 Set Screw GS-610040...
  • Page 40 SUT CE Spare Parts List SUT CE Spare Parts List Item No. Part Name Item No. Part Name GS-ST053 Front Lower Hinge Pin 3mm GS-UTC03 SUT-CE Rear Chassis Brace GS-ST054 Rear Lower Hinge Pin 3mm GS-UTC04 SUT-CE Steering Plate Set (5mm) SUT-CE Front Lower Sus.
  • Page 41 SUT CE Spare Parts List SUT-CE Option Parts List Item No. Part Name Item No. Part Name GS-615001 M4x8 BH Hex Screw (10) GS-UTP01 SUT Carbon Center Diff Support Plate GS-620025 3x10mm FH Screw GS-UTP03 SUT 7075 Shock Tower GS-620026 3x12 FH Screw GS-UTP04 SUT Carbon Fiber Servo Tray...