3MO TXL 6 Speed 600 Nm 4WD Sequential Gearbox Specifications

SPECIFICATIONS

 

3MO TXL 4WD SEQUENTIAL GEARBOX

Torque 600 Nm / 450 lb-ft

4WD 600 Ultralight 6 Speed

OVERVIEW

 

The lightweight 3MO TXL 6 Speed 4WD Sequential Gearbox suits racing engines using longitudenally orientated, front or mid mounted engines, connected to a four wheel drive differential setup. Race car owners spend a lot of time and money taking weight out of their cars, so it makes no sense adding that weight back with a heavy or over specified gearbox that's not fit for purpose. The transmission's compact size means driveline tunnels dont usually need to be modifed making fitting simple and easy in a wide range of situations. If you have 600nm or less, then the TXL lightweight and super quick shifting sequentiual gearbox is probably the right choice for you.

This versatile 3MO sequential gearbox has a wide range of 35 gear ratios and 3 driven shaft ratios to choose from ensuring drivers can specify the gearbox at ordering time for their unique needs - in other words; there's a gear ratio for almost every situation. The TXL 6 Speed Sequential Gearbox is capable of handling engine torque of 600 Nm or 450 lb/ft with 1st gear @ 3.08 and 0.97 input drive (25 x 24) i.e. 2.98. If a taller 1st gear ratio of 2.92 and 0.87 input drive (23 x 20) ie 2.54 are chosen; then torque capability is reduced to 520 Nm or 385 lb/ft

There are three inspection ports to allow for easy checking of the dog rings without disassembling the gearbox, which saves workshop time.

With proper shift technique and lubrication, dog rings should be good for 60 hours of racing or 8400 km / 5250 miles. Likewise, gear positions 2 and 3 are rated for 50 hours or 7000 km / 4375 miles, with gear positions 4, 5 and 6 being rated for 75 hours or 10500 km / 6560 miles. 

APPLICATIONS

Circuit - Rally - Hillclimb - Off Road

FEATURES

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

 

GEARBOX IN ACTION 

 

COMING SOON

SPECIFICATIONS

  • 6 or 5 speed 4WD sequential gearbox with straight cut and dog engaged gears 

  • Maximum engine torque:

      - 600 Nm / 450 lb-ft 

      - 520 Nm / 385 lb-ft (1st gear 2.92, constant drive 0.87 i.e. 2.54 )

  • 89mm / 3.5" shaft centreline 

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

  • Gear ratio options 

        - 2 input constant drive ratio options 
        - 35 gear ratios 

  • Input shaft length and spline to suit customer requuirements

  • Range of bellhouses for most of the popular engines 

  • Splash lubrication

  • 3 Dog Ring inspection ports

  • 0-5V gear position sensor 

  • Lock out cable for reverse

  • Weight: 38 kg

RATIOS

 

Input Drive Ratios 

Gear Ratios

Gear Position

  Teeth Ratio Teeth Ratio 1st 2nd 3rd 4th 5th 6th
Short 25 x 19 0.760 12 x 37 3.083          
Medium 23 x 20 0.870 12 x 35 2.917          
Long 25 x 24 0.960 13 x 34 2.615          
      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

 

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.
  • Depending on your application an oil cooler may be 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 0.9 litres or 1.06 quarts excluding oil lines, pump and cooler