Specifications 3MO NTX 450 NmTransaxle Gearbox

SPECIFICATIONS

 

3MO NTX TRANSAXLE GEARBOX

Torque 450 Nm / 330 lb-ft

TX 450 6 Speed

OVERVIEW

 

 

The 3MO NTX Transaxle Sequential Gearbox has been designed for Sports Car GT type racing in longitudenally mounted mid engined race cars.  The 6 Speed Transaxle Sequential Gearbox runs in class racing like the Revolution-A-One which are powered by Ford 3.7 litre V6 supercharged engines making 500hp in GT type race cars weighing 834kg / 1834 lb. 

The versatile gearbox has a wide range of gear 35 gear ratios and to ensure there's a right ratio for every situation. This 3MO NTX Sequengtial Gearbox can handle 450 Nm / 330 lb-ft comfortably.

This Transaxle Gearnbox uses a TFJ Self Locking Differential with a 4 + 4 disc system and a range of ramp angles to suit customer needs. There are 3 inspection ports to allow for easy checking of the Dog Rings without disassembly of the gearbox saving time. 

APPLICATIONS

Circuit - Road Racing - Hillclimb

FEATURES

Reliability - Compact Size - Wide Range of Ratios - Flexible Fitting 

GEARBOX IN ACTION

 

SPECIFICATIONS

  • 6 Speed Sequential Transaxle Gearbox with straight cut and dog engaged gears 

  • Maximum engine torque 450 Nm / 330 lb-ft 

  • 89mm / 3.5" shaft centreline 

  • 20mm / 0.787" gear tooth width (1st to 3rd) & 17mm / 0.669" (4th to 6th)

  • Gear Ratio options 

        - 3 quick change constant drive ratios 
        - 35 gear ratios 

  • Hypoid Final Drive

  • TFJ self locking differential  with 4 + 4 disc system and many ramp angles

    • Planet gear support cross

    • Bevel gear guided

    • Cluster removable 

    • Preload adjustment without disassembly

  • Input shaft length and spline to suit customer needs

  • Range of bellhouses for most of the popular engines 

  • Internal oil pump and lubrication system with steel filter

  • 3 Dog Ring inspection ports

  • 0-5V gear position sensor 

  • Lock out cable for reverse

  • Weight: 61kg / 134 lb

RATIOS

 

Final Drive Ratios 

Gear Ratios

Gear Position

Teeth Ratio Teeth Ratio 1st 2nd 3rd 4th 5th 6th
 9 x 30 3.333 12 x 39 3.250          
9 x 34 3.778 12 x 37 3.083          
9 x 35 3.889 12 x 35 2.917          
    13 x 34 2.615          
    14 x 36 2.571        
    15 x 36 2.400        
    13 x 31 2.385        
    14 x 33 2.357        
    13 x 30 2.308        
    14 x 32 2.286        
    13 x 29 2.231        
    14 x 30 2.143        
    15 x 32 2.133        
    14 x 29 2.071        
    16 x 32 2.000        
    17 x 33 1.941        
    15 x 29 1.933        
    17 x 32 1.882        
    17 x 31 1.824        
    15 x 27 1.800        
    17 x 30 1.765        
    18 x 31 1.722        
    17 x 29 1.706        
    18 x 29 1.611        
    16 x 32 2.000      
    15 x 29 1.933      
    15 x 27 1.800      
    18 x 31 1.722      
    16 x 27 1.688      
    17 x 28 1.647      
    18 x 29 1.611      
    17 x 27 1.588      
    17 x 26 1.529      
    18 x 27 1.500      
    17 x 25 1.471      
    18 x 26 1.444      
    19 x 27 1.421      
    18 x 25 1.389      
    20 x 27 1.350      
    19 x 25 1.316      
    21 x 27 1.286      
    21 x26 1.238      
    22 x 27 1.227      
    19 x 23 1.211      
    21 x 25 1.190      
    20 x 23 1.150      
    23 x 26 1.130      
    20 x 22 1.100      
    21 x 23 1.095      
    28 x 30 1.071      
    28 x 29 1.036      
    23 x 23 1.000      
    25 x 24 0.960      
    32 x 30 0.938      
    23 x 19 0.826      

ACCESSORIES

Transaxle gearbox accessories & components

  • Bell Housings and Adaptor Plates
  • Gear Lever
  • Shift Cut Knob for Gear Lever
  • Paddle Shift Solutions
  • Breather Kit 
  • Programmable Gear Position Display
  • 52mm hydraulic clutch release bearing + feeder hoses
  • Generic customisable cross member to make fitting faster 

NOTES

 

  • A minimum 0.7" master cylinder can be installed on your original clutch pedal setup.
  • An adjustable clutch pedal stop is needed as the hydraulic release bearing does not have an output stop.
  • An oil cooler is recommended.  A 13 row cooler measuring 210 x 98 x 50mm with AN6 inlet / outlet fittings will work well.
  • Motul HD 85W-140 Mineral or Motul 75W-140 Gear Comp Synthetic are the correct lubricants for this gearbox operating at 95-110°C or 203-230°F.
  • Oil Capacity is 3.4 Litres / 3.5 Quarts excluding lines and cooler