3MO NTV 650 Nm Transaxle Sequential Transmission Specifications

3MO NTV TRANSAXLE SEQUENTIAL TRANSMISSION

Torque 650 Nm / 480 lb-ft

TX 650 Drop Gear 6 Speed Endurance

OVERVIEW

The 3MO NTV 650 Nm Transaxle Sequential Transmission has been designed for Sports Car GT – LMP type endurance racing in longitudinally mounted mid-engine race cars.  The 6 Speed Sequential Gearbox has been in production since 2018 and run in class racing like the Liger JPS4 which run Ford Cyclone 385hp V6 engines in LMP type race cars weighing 920kg / 2024 lb. 

The versatile transmission has a wide range of gear 35 gear ratios and to ensure there’s a right ratio for every situation. In addtion there is a Quick change drop gear system (overall reduction) system to optimose the ratios for a given track. This 3MO NTV gearbox with upgrdaed materials can handle 650 Nm / 480 lb-ft comfortably in endurance racing conditions.

This Transaxle uses a TFJ Self Locking Differential with a 3 + 3 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 

BENEFITS

Reliability – Wide Range of Ratios – Quick Change Drop Gears 

GEARBOX IN ACTION

 

SPECIFICATIONS

  • 6 Speed Sequential Transaxle Transmission with straight cut and dog engaged gears 
  • Maximum engine torque 650 Nm / 480 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 

  • Step up conical drive (input) – transverse cluster layout 
  • TFJ self locking differential  with 3 + 3 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
  • Selection of bellhousings for many 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: 85kg / 187lb

RATIOS

Final Drive RatiosGear RatiosGear Position
TeethRatioTeethRatio1st2nd3rd4th5th6th
 9 x 303.33312 x 393.250     
9 x 343.77812 x 373.083     
9 x 353.88912 x 352.917     
  13 x 342.615     
  14 x 362.571    
  15 x 362.400    
  13 x 312.385    
  14 x 332.357    
  13 x 302.308    
  14 x 322.286    
  13 x 292.231    
  14 x 302.143    
  15 x 322.133    
  14 x 292.071    
  16 x 322.000    
  17 x 331.941    
  15 x 291.933    
  17 x 321.882    
  17 x 311.824    
  15 x 271.800    
  17 x 301.765    
  18 x 311.722    
  17 x 291.706    
  18 x 291.611    
  16 x 322.000   
  15 x 291.933   
  15 x 271.800   
  18 x 311.722   
  16 x 271.688   
  17 x 281.647   
  18 x 291.611   
  17 x 271.588   
  17 x 261.529   
  18 x 271.500   
  17 x 251.471   
  18 x 261.444   
  19 x 271.421   
  18 x 251.389   
  20 x 271.350   
  19 x 251.316   
  21 x 271.286   
  21 x261.238   
  22 x 271.227   
  19 x 231.211   
  21 x 251.190   
  20 x 231.150   
  23 x 261.130   
  20 x 221.100   
  21 x 231.095   
  28 x 301.071   
  28 x 291.036   
  23 x 231.000   
  25 x 240.960   
  32 x 300.938   
  23 x 190.826   

ACCESSORIES

Transaxle sequential transmission parts & accessories

  • 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 

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.
  • Must use 85w140 Mineral lubricant 
  • Oil Capacity is 3.5 Litres / 3.6 Quarts  excluding lines and cooler
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