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Serpent Seven20 Instruction Manual

1/10th scale 4wd competition car
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Download this manual See also: Setup Manual
1/10TH SCALE 4WD COMPETITION CAR
INSTRUCTION MANUAL

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Summary of Contents for Serpent Seven20

  • Page 1 1/10TH SCALE 4WD COMPETITION CAR INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    The Serpent 720 offers many of the same specifications adjustments, which will give you a good initial setup and features that made the Serpent 710 into a top- for your Serpent 720. Fine-tuning the initial setup is an competition racecar. The new, refined chassis design...
  • Page 3 Connect one item to another Gap between two items Refer to Serpent 720 Setup Book - Section A: Basic Setup Refer to Serpent 720 Setup Book - Section B: Advanced Setup Apply graphite grease (GR), threadlock (TL), CA glue (CA) or Serpent’s One-way Lube (OW).

  • Page 4: Preparation

    1.0 PREPARATION STEP 1.1 BAG D SHOCK ABSORBERS Fill ALL 4 shock absorbers with shock oil using the following steps Unscrew the bottom half of the pre-assembled shock absorbers. FILLING Fill the shock body with the supplied shock absorber oil. BLEEDING Let the oil settle and allow the air to escape.
  • Page 5 STEP 1.5 Fill the space around the gears with the FRONT DIFF: Use 50,000 diff oil indicated Serpent Diff Oil until level with the top of the casing. Rotate the output REAR DIFF: Use 30,000 diff oil shaft to allow the grease to fill all gaps in and around the gears.
  • Page 6 STEP 1.6 IMPORTANT! Make sure to set O-ring in place STEP 1.7 IMPORTANT! Do not overtighten screws The mounting screws are different for the front and rear differential so please be sure to use the correct ones. Front Diff - Long Screws Rear Diff - Short Screws - 6 -...

  • Page 7: Front Assembly

    2.0 FRONT ASSEMBLY STEP 2.1 BAG 1 M3x4mm M3x10mm Learn about front roll center adjustment Make sure L + R inserts are in equal but opposite positions (mirrored). STEP 2.2 BAG 2 M3x8mm M3x4mm Press anti-roll bars into mounts far Set front anti-roll bar enough so the bars do not bind when the suspension is compressed.
  • Page 8 STEP 2.3 BAG B12 3.5x9.5mm M3x16mm STEP 2.4 BAG 3 M3x8mm - 8 -...
  • Page 9 STEP 2.5 12x18mm LEFT FRONT ECCENTER Tighter Default Looser Change the position of BOTH eccentric hubs to adjust front belt tension. Both hubs should have the same position. STEP 2.6 BAG 4 3.5x13mm M3x8mm Set front downstops - 9 -...
  • Page 10 Assemble both front upper arms STEP 2.7 using the indicated steps. M3x16mm IMPORTANT! Install front inserts so they match their corresponding rear inserts (step 2.1) STEP 2.8 Set caster Spacer placement - 10 -...
  • Page 11 STEP 2.9 BAG 5, U Assemble both steering blocks using the indicated steps. L + R M3x3mm steering blocks are mirrored. 2x10mm 10x15mm STEP 2.10 BAG 6 17mm 15mm BOTTOM Set front track-width and camber STEP 2.11 BAG U 2.9x9.5mm 6x13mm - 11 -...
  • Page 12 STEP 2.12 BAG 7 M4x4mm Completed assembly STEP 2.13 2.9x9.5mm M3x6mm - 12 -...

  • Page 13: Rear Assembly

    3.0 REAR ASSEMBLY STEP 3.1 BAG 8, E10 Roughen the metal plates with sandpaper before gluing M3x6mm 2.5x14mm STEP 3.2 BAG 9, 10, B13, U Note orientation of front inserts. Ensure BOTH inserts have the same position. 3.5x13mm M4x6mm Roll centre insert orientation 6x13mm Left Block Right Block...
  • Page 14 Assemble both rear lower arms STEP 3.3 using the indicated steps. M3x6mm M3x8mm M3x10mm Set rear downstops STEP 3.4 12x18mm LEFT REAR ECCENTER Change the position of BOTH eccentric hubs to adjust rear belt tension. Both hubs should have the same position. STEP 3.5 M3x8mm Learn about rear...
  • Page 15 STEP 3.6 BAG E11 M3x8mm 2x10mm STEP 3.7 BAG 12, E11 M3x8mm M3x12mm Completed assembly STEP 3.8 IMPORTANT! Install rear inserts so they match their corresponding front inserts (step 3.2) Learn about rear roll Roll centre insert orientation center adjustment - 15 -...
  • Page 16 STEP 3.9 BAG E11 3.5x13mm M3x8mm STEP 3.10 BAG 13 M3x3mm 2x10mm 10x15mm Assemble both rear uprights using the indicated steps. STEP 3.11 - 16 -...
  • Page 17 STEP 3.12 BAG 14 Set rear track-width, camber and toe Learn more about camber rise adjustment TOP VIEW FRONT REAR 46mm 16.5mm 16.5mm Upper camber link mounting hole STEP 3.13 4x8mm - 17 -...
  • Page 18 STEP 3.14 M3x8mm STEP 3.15 M4x4mm - 18 -...

  • Page 19: Radio Plate Assembly

    4.0 RADIO PLATE ASSEMBLY STEP 4.1 BAG 16, E11 Note the orientation of the servo mounting screw blocks. Reverse the default orientation to mount a M3x6mm smaller servo. M3x8mm M3x12mm Use the following servo arms with these brands of servos. 23 - Sanwa / KO / JR 24 - Hitec 25 - Futaba...
  • Page 20 STEP 4.3 M3x8mm M3x10mm STEP 4.4 BAG 18, E11 M3x8mm M3x4mm FUEL CAP FITTING PLACEMENT CW tracks: Fitting on RIGHT side. CCW tracks: Fitting on LEFT side. - 20 -...

  • Page 21: Radio Plate Mounting

    5.0 RADIO PLATE MOUNTING STEP 5.1 BAG B12 3.5x9.5mm STEP 5.2 BAG 19, U M3x8mm M3x8mm 5x8mm Completed assembly FRONT - 21 -...
  • Page 22 STEP 5.3 M3x8mm M3x12mm 41mm Steering Linkage Servo Saver - 22 -...
  • Page 23 STEP 5.4 BAG 20, E10 M3x6mm STEP 5.5 M3x8mm - 23 -...

  • Page 24: Gearbox Assembly

    6.0 GEARBOX ASSEMBLY STEP 6.1 SHIFT POINT BAG 21, E13 screw M3x12mm GAP SETTING screw M3x3mm Start with screw head flush with bottom edge of hole. Both screws must be set equally. Learn about shift point and shoe gap TO SHIFT LATER TO SHIFT EARLIER Tighten both screws equally Loosen both screws equally...
  • Page 25 STEP 6.3 BAG U1 M3x6mm 6x13mm 6x10mm 2nd Gear STEP 6.4 BAG 22 M3x8mm 3x13.8mm Learn about shoe gap ADJUSTING THE 2-SPEED SHOE GAP Loosed the two gap-setting set screws to allow the shoes to rest on the drive adaptor. Install the 2-speed shoes in the 2nd gear drum, but do NOT install the 1st gear.

  • Page 26: Shock Attachment

    7.0 SHOCK ATTACHMENT STEP 7.1 BAG E12 M3x10mm STEP 7.2 BAG E10 M3x6mm Note the shock mount holes used. Set front shock position Learn about shock adjustment (damping, springs, preload) Front Shock = Short Spring STEP 7.3 BAG E12, E13 M3x10mm M3x12mm - 26 -...
  • Page 27 STEP 7.4 BAG 23, E11 M3x8mm 2x10mm STEP 7.5 M3x6mm - 27 -...
  • Page 28 - 28 -...
  • Page 29 STEP 8.3 Initial clutch spring tension 1.5mm STEP 8.4 2nd Gear 1st Gear STEP 8.5 BAG 25 M3x12mm 5.2mm 5.0mm IMPORTANT! Install thrust bearing plates as shown Large inner dia. Small inner dia. - 29 -...
  • Page 30 - 30 -...

  • Page 31: Final Assembly

    9.0 FINAL ASSEMBLY STEP 9.1 BAG 26 EF19 M4x10mm M3x12mm STEP 9.2 M3x8mm - 31 -...
  • Page 32 STEP 9.3 BAG 27 M4x8mm M4x6mm Side belt tension adjustment Looser Tighter STEP 9.4 BAG 28, 29, E11, E12 Carb Linkage Cut one of the long pieces to 5cm 2.5x10mm M3x8mm Brake Linkage M3x10mm M3x3mm Use the following servo arms with these brands of servos.
  • Page 33 STEP 9.5 IMPORTANT! Before installation, check that fuel line and pressure line are free from debris and not blocked. STEP 9.6 Mounted foam tires not included Rear tires (wide) Front tires (narrow) - 33 -...
  • Page 34 M4x10mm Securely attach a AAA 5-cell receiver battery pack to the battery tray (not included). Note: Serpent offers the pre-built 5-Cell battery set (#801173) for the Serpent 720. For more information, see the appropriate product page on serpent.com - 34 -...
  • Page 35 - 35 -...
  • Page 36 Serpent Model Racing Cars BV Spaarneweg 12E, 2142 EN, Cruquius The Netherlands, Europe...

This manual is also suitable for:

Seven 20 720