Introduction Thank you for purchasing the Tekno RC NB48.4 1/8th Scale 4WD Competition Nitro Buggy Kit. We are always working on new projects, so please check our website at www.teknorc.com or our Facebook page at www.facebook.com/teknorc for the latest news, parts, and kits. Take your time! When you work your way through these building instructions, keep an eye out for the following important indicators below: • RED TEXT - This indicates important areas of the build process that should be observed.
Bag A Center Differential (overview) TKR5112X TKR5144 TKR5150 TKR5113 TKR5143 TKR5149 *TKR5149A (Option) TKR5150 TKR5415C TKR5112X TKR5150 Step A-1 TKR5145B Step A-2 TKR5144 Apply grease to the groove where the o-ring is placed as well as the o-ring itself TKR5150 TKR5149 *TKR5149A (Option) Grease TKRBB08165 Grease Apply grease to the groove in the outdrive x4 TKR1325 M3x14mm Flat Head Screw x2 Step A-3 f if il DO Step A-4 Apply a liberal amount of grease in the areas between the shims and
Bag B TKR5114XB Front and Rear Differential (overview) TKR5144 TKR5113 TKR5150 TKR5143 TKR5149 *TKR5149A (Option) TKR5150 TKR8151B TKR5114XB TKR5150 TKR5145B Step B-1 Step B-2 Repeat for rear diff TKR5144 TKR5150 Repeat for rear diff Apply grease to the groove where the o-ring is placed as well as the o-ring itself TKR5149 *TKR5149A (Option) Grease TKRBB08165 Grease Apply grease to the groove in the outdrive Step B-4 Apply grease to the groove in the outdrive Repeat for rear diff x8 TKR1
Bag C TKR1603 Front Gearbox (overview) TKR5268 TKRBB05114 TKR1222 *These may not be needed TKR5075 TKR8152B TKR1226 TKRBB05114 TKR5012 TKR1222 *These may not be needed TKR5012 TKR1525 x6 TKR1603 Note: flat spot Step C-1 Front Thread Lock TKRBB05114 TKR8152B TKR1226 Note: The front and rear of the car use different inner bulkheads. The front is angled whereas the rear is only slightly angled.
Bag D TKR1603 Rear Gearbox (overview) TKR5269 TKRBB05134 TKR1222 *These may not be needed TKR8152B TKR5075 TKR5181 TKR1226 TKRBB05134 TKR1529 TKR5016B TKR1222 *These may not be needed TKR1525 TKR5016B Inner Bulkheads TKR1603 Step D-1 TKR1525 Note: flat spot TKRBB05134 TKRBB05134 Note: The front and rear of the car use different inner bulkheads. The front is angled whereas the rear is only slightly angled.
TKR1322 Bag E TKR5341 Center Differential Assembly (overview) TKR1522 TKR1522 TKR5345B TKR5310 TKR5368 TKR5314B TKR5213A TKR5310 TKR5368 TKR5310 TKR5336B TKR5314B TKR5345B TKR5314B TKR5215B TKR1601 TKR1402 TKR5338 TKR5336B TKR5213A TKR5368 TKR5362 TKR1402 TKR1601 Step E-2 Step E-1 TKR5213A Pre-thread all brake post holes with a separate M3 screw Step E-3 Note: Tighten brake posts (TKR5213A) all the way down and then back off 1/2 TURN.
Bag F SETTINGS Low Profile Wing Mount POSITION SETTINGS 1 2 3 4 Step F-1 TKR5181 TKR1524 1 2 3 4 1 - REARWARD LOW 2 - FORWARD LOW 3 - REARWARD HIGH 4 - FORWARD HIGH Note: Stock position setting is #2, Forward Low DOWNFORCE SETTINGS 4° 7° 10 ° (downforce angles) Note: Stock downforce setting is 4° TKR1524 Step F-2 TKR1221 TKR1529 TKR1201 TKR1221 TKR1201 x2 TKR1201 M3 Lock Nut Black x2 TKR1221 M3x8mm Washer TKR1529 x6 TKR1524 M3x12mm Cap Head Screw x4 TKR1529 M3x20mm Cap Head Screw 8
Bag G TKR5491 - 2.4mm *TKR5490 - 2.3mm *TKR5492 - 2.5mm *TKR5493 - 2.6mm *TKR5494 - 2.8mm *TKR5495 - 3.0mm (Option) Rear End Step G-1 TKR5086 30.2 TKR1601 Note: Do not overtighten Pivot Ball Orientation Rear Step G-2 TKR1601 Front Install the sway bar ball onto the sway bar wire until the end of the wire is flush with the ball collar as pictured above.
Bag H Rear Hub/CVA Assembly Note: Notch on pin needs to line up with set screw. TKR8087 TKR8040A Step H-1 TKR5071 *TKR5071B *TKR5071C *TKR5071X (Option) Thread Lock TKRBB13194 TKRBB08165 TKR1603 Step H-2 x4 TKR1201 TKR1201 M3 Locknut Black TKR8034 x4 TKR1601 M3x4mm Set Screw x2 TKR1201 TKR1603 M5x4mm Set Screw x2 TKR5071 M3x16.
Bag H Rear Camber Links TKR5187 Left/Right x 2pcs TKR8052A TKR5050 Step H-3 TKR8052A TKR5187 Actual Size Note: Notch always goes on left side of vehicle 38.50 Step H-4 TKR1201 TKR1201 TKR1534 TKR1529 x4 TKR1201 M3 Locknut Black x2 TKR1529 M3x20mm Cap Head Screw x2 TKR1534 M3x22mm Cap Head Screw 1 2 3 4 5 A BC x2 TKR8052A Pivot Ball M3x6.
Bag I TKR5081 - 2.3mm *TKR5080 - 2.2mm *TKR5082 - 2.4mm *TKR5083 - 2.5mm *TKR5084 - 2.6mm *TKR5085 - 2.8mm *TKR5087 - 3.0mm (Option) Front End Step I-1 TKR5086 30.2 TKR1601 Note: Do not overtighten Pivot Ball Orientation Rear Thread Lock Step I-2 Front TKR1601 Install the sway bar ball onto the sway bar wire until the end of the wire is flush with the ball end as pictured above.
Bag J Front Spindle / CVA Assembly TKR8042 Note: Notch on pin needs to line up with set screw. TKRBB05104 TKR8087 Step J-1 TKR5071 (Option) *TKR5071B *TKR5071C *TKR5071X TKR8041 TKR1601 TKR8194A Thread Lock TKRBB05104 TKRBB13194 TKR1601 TKR8042 TKR1603 TKRBB08165 x4 TKR1201 M3 Locknut Black x2 TKR1221 M3x8mm Washer x2 Note: The TKR1601 set screws are meant to keep the TKR8042 screws from coming loose.
Bag J Front Camber Links TKR8052A This side mounts on shock tower Note: raised flange TKR5187 Left TKR5053A This side mounts on hub Note: no flange Right TKR5187 TKR5187 TKR5550 TKR5550 Step J-4 TKR8052A This side mounts on shock tower Note: raised flange TKR5187 TKR5053A This side mounts on hub Note: no flange Note: Notch always goes on left side of vehicle Step J-5 Actual Size 14.
TKR8100 Bag K TKR1403 TKR1201 Steering Assembly (overview) TKRBB06103 TKR1221 TKR5103 TKR8052A TKR5123 TKR5056 TKR8104 TKRBB050825 TKR8052A TKR1529 TKRBB050825 TKR8104 TKR5122 TKR8104 TKR5101X TKR5122 TKR5231 TKRBB06103 TKR1403 TKR5103 Step K-1 Thread Lock Step K-2 Thread Lock Note: Tighten nut all the way down, then back it off 3 full turns TKRBB050825 TKR8100 TKRBB050825 x2 TKR1201 M3 Lock Nut Black Note: Apply a small drop of oil for easy o-ring installation.
Bag L TKR1443 Thread Lock Front End Assembly TKR5181 Step L-1 TKR8104 Step L-2 TKR1323 Note: On step L-4: Line up the bottom of the steering posts (TKR5102A) with the corresponding recess cut in the chassis. TKR5102A TKR1443 Step L-3 Note: Initial bumpsteer setting is four washers below the steering ball link. x2 Note: On steps L-2, L-3 and L-4: Do not tighten the chassis screws all the way down until the assembly steps are complete.
Bag M Center/Rear Assembly TKR5377 *TKR5377A *TKR5296 (Option) Step M-1 TKR8303 TKR1344 TKR1343 TKR1528 Step M-2 Step M-3 TKR1443 TKR8320 TKR1528 TKR8320 (optional) (optional) (stock) Note: Three rear chassis braces are included in the kit. The shortest brace is the stock brace and provides the most flex characteristics. The other two are optional. Adding additional braces will further stiffen the chassis. Longer braces stiffen more than short ones.
Bag N Front Shock Assembly Step N-1 Step N-2 Step N-3 TKR1200 TKR6165 *TKR6160 *TKR6162 *TKR6163 (Option) Refer to filling instructions on page 20 during this step. TKR8702 *TKR6003 *TKR6003B (Option) TKR6017 *TKR6017T (Option) Note: Use green slime or oil on shock shaft threads AND O-rings to prevent tearing and leaking.
Bag O Rear Shock Assembly Step O-1 Step O-2 Step O-3 Step O-4 TKR1200 TKR6165 *TKR6160 *TKR6162 *TKR6163 (Option) Refer to filling instructions on page 20 during this step. TKR6061 *TKR6061T (Option) Note: Shaft guide orientation TKR6015 TKR8702 *TKR6003 *TKR6003B (Option) Note: Use green slime or oil on shock shaft threads AND O-rings to prevent tearing and leaking.
Shock Filling Instructions For both front and rear shocks We've found it's easiest to complete steps 1 & 2 on each shock before moving on to step 3. By the time you've finished step 2 on the last shock, the first one will be ready for step 3. Step 1. Insert all four larger o-rings into the emulsion caps and set aside. Install the small o-rings onto the small emulsion screws by placing the o-rings on a pit mat or towel and pressing the screws into the o-rings. Step 2.
Bag P TKR1525 Step P-1 RX Tray Mud Guard Note: We recommend using a servo with at least 300 oz/in torque. TKR1221 Electronics (not included) Screws (not included) TKR5317 Step P-2 TKR1401 TKR1525 TKR1525 TKR1221 Switch (not included) TKR1221 Electronics (not included) Note: We recommend using a piece of thin foam or other type of padding under the battery to reduce shock.
Bag P Mud Guard Installation TKR1343 Step P-4 Note: Do not overtighten radio tray screws. Step P-5 TKR1323 Note: Do not overtighten mud guard screws.
Bag Q Air Filter / Clutch TKR1323 TKR5324 Step Q-1 TKR5324 *TKR5363 (Option) (foams only) TKR5324 *TKR5363 (Option) (foams only) TKR5324 TKR5324 Note: Your kit contains 3 sets of clutch springs. 0.9mm (green), 1.0mm (gold), and 1.1mm (red) springs are included. The stock setting is to use (2x) 0.9mm springs on opposing shoes and then use (2x) 1.0mm springs on the other shoes. If the track is very high bite you can use (2x) 1.0mm springs and (2x) 1.1mm springs for more ‘pop’.
Bag R Engine / Pipe Installation TKR5321 Thread Lock Step R-1 VERY IMPORTANT - With the set screws that secure the pipe hanger wire set loose, install pipe onto pipe hanger wire. Adjust the wire such that the pipe and the manifold connections from the engine are not bent or angled. The pipe must fit naturally. You may need to bend the pipe hanger wire to accomplish this. Then tighten the set screw that secures the wire to the wire hanger block.
Bag S Steering Linkage TKR1201 TKR5058A TKR5056 TKR1221 TKR5320 *TKR5251B *TKR5252B *TKR5253B (Option) Step S-1 TKR6252 TKR5056 TKR1325 TKR1407 TKR1221 Step S-2 TKR1201 Step S-3 x2 TKR1201 M3 Lock Nut Black x2 TKR1221 M3x8mm Washer x1 TKR1325 M3x14mm Flat Head Screw L ALLE x1 PAR TKR1407 M3x16mm Button Head Screw x2 TKR5058A Pivot Ball M3x5.8mm No Flange Note: Offset servo arm so it is parallel with the connecting arm at neutral or zero servo position.
Bag S TKR1609 Thread Lock Brake Linkage Step S-4 TKR5331 Step S-5 TKR1325 Thread Lock BEFORE TKR5336B Note: This rod has small threaded section Note: TKR5336B should spin freely. TKRBB050825 TKR1201 TKR5320 AFTER TKR5336B TKRBB050825 TKR1201 Note: Set collars up to appear close to this diagram. TKR5331 Step S-6 TKR1609 Note: Set collars up to appear close to this diagram.
Bag T TKR1401 Fuel Tank Step T-2 TKR1524 TKR1221 TKR5340C Step T-1 TKR5340C TKR5340C TKR5341 Step T-3 TKR1323 *Align the fuel tank posts to the cutouts in the chassis x2 TKR1221 M3x8mm Washer x2 TKR1323 M3x10mm Flat Head Screw x4 TKR1401 M3x6mm Button Head Screw Step T-4 Note: Fuel tubing wraps around the tank 1 1/2 times from the pick up nipple (yellow line). Pressure line is shown in blue.
Bag U TKR1325 TKR1220 TKR1220 Wing/Wheels/Body TKR5181 TKR5181 Step U-1 Wing Hole Options (Use Dimples as Hole Cutting Guides) TKR5292W *TKR5292K *TKR5292Y (Option) Most Downforce TKR1201 (Use as many holes as you see fit to fine tune the amount of downforce the wing creates.) Least Downforce Step U-2 Wheels/Tires (not included) TKR5116 *TKR5116B *TKR5116C (Option) Note: It may be necessary to cut holes in the body for ventilation.
TKR8300 - NB48.4 1/8th Competition Nitro Buggy Kit Parts List TKR4213 - Clutch Bell (13t) TKR5012 – Gearbox (front) TKR5016B – Gearbox (rear, angled) TKR5020 – Hinge Pins (inner, front/rear) TKR5049A – Pivot Balls (6.8mm, no flng, sway bar, shck ends, almnm, 4pcs) TKR5050 – Turnbuckle (camber link, front/rear, 2pcs) TKR5053A – Pivot Balls (6.8mm, flanged, outside camber, aluminum, 4pcs) TKR5056 – Rod Ends (5.8mm, brake/steering/sway bar linkage, 8pcs) TKR5058A – Pivot Balls (5.
Box Stock 4 0 0 550 4 450 4x 1.9 flat 4x 1.9 flat 1 3 27 29 -2 deg -2 deg black orange 0 0 emul emul 10k 7k 15 deg 0 deg 12 deg 2 deg .5 deg out 2.5 deg 2.3mm 2.
Tekno RC 10755 Scripps Poway Pkwy #598 San Diego CA 92131 USA
