QUICKSHIFT®TRANSMISSION

MGX-6599SC

The perfect propulsion system starts with the technology of Twin Disc’s QuickShift transmissions. This fully integrated system includes the transmission, clutch, valves, actuators and electronic controls resulting in fast, smooth clutch engagement, exceptional boat handling, precise speed control and an incredibly smooth ride.

Standard Equipment
  • Vertical offset, aluminum housing
  • Electric GP-valve with manual override
  • EC600PC profile module – interface for engagement signals
  • Integral oil cooler for raw water cooling
  • Oil strainer and oil filter
Options
  • SAE J617 housing no. 1
  • SAE J617 housing no. 0
  • Flexible coupling for 14” flywheel (SAE J620 size 355)
  • Flexible coupling for 18” flywheel (SAE J620 size 460)
  • Input flange for freestanding installation
  • EC600PC e-troll module and propulsion control system
  • Output shaft driven trailing pump
  • Companion flange/ bolts set
  • Monitoring devices to customer’s specification
  • Mounting brackets
  • Live PTO
    • SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt) – max. 600 Nm
  • Hydraulic Clutchable PTO
    • SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt) – max. 600 Nm
  • Secondary live PTO for power steering pumps
    • SAE J744 size 101-2, 22-4 (SAE “B”, 2-bolt) – max. 75 Nm or
    • SAE J744 size 82-2, 16-4 (SAE “A”, 2-bolt) – max. 75 Nm
INPUT RATINGS

KILOWATTS (KW) (HORSEPOWER (HP))*

For service classification definitions and important notes refer to the Twin Disc Marine Product Guide or contact Twin Disc directly.

Reduction Ratios

Pleasure Craft

Light Duty

Intermediate Duty

Medium Duty

Continuous Duty

:1

@ 2300 RPM

@ 2300 RPM

@ 2100 RPM

@ 1800 RPM

@ 1800 RPM

1.07, 1.30
1.50, 1.66

1452 kW
(1947 hp)

1244 kW
(1668 hp)

960 kW
(1287 hp)

774 kW
(1038 hp)

744 kW
(998 hp)

1.74

1418 kW
(1902 hp)

1244 kW
(1668 hp)

960 kW
(1287 hp)

774 kW
(1038 hp)

744 kW
(998 hp)

1.97, 2.04

1418 kW
(1902 hp)

1234 kW
(1655 hp)

960 kW
(1287 hp)

774 kW
(1038 hp)

728 kW
(976 hp)

2.19

1418 kW
(1902 hp)

1234 kW
(1655 hp)

940 kW
(1261 hp)

774 kW
(1038 hp)

728 kW
(976 hp)

2.45

1343 kW
(1801 hp)

1164 kW
(1561 hp)

940 kW
(1261 hp)

774 kW
(1038 hp)

728 kW
(976 hp)

2.82

1156 kW
(1550 hp)

1042 kW
(1397 hp)

811 kW
(1088 hp)

668 kW
(896 hp)

624 kW
(837 hp)

* Ratings shown for use with standard right hand rotation engines. The maximum allowable rated engine speed is 2500 rpm.

DIMENSIONS & WEIGHT

Specifications subject to change without prior notice in the interest of continual product improvement. Contact your local Twin Disc representative for engineering specifications, Survey Society Approvals and Classifications.

Enlarge

C

229 mm (9.00”)

S

227 mm (8.95”)

F

592 mm (23.31”)

L

340 mm (13.39”)

R

340 mm (13.39”)

Weight

492 kg *

* dry weight, including SAE #1 housing and SAE 355 flexible coupling

Publications:
Installation Drawings:

Drawing Number

Input Connection

Control Valve

Heat Exchanger

PTO

Download

740989

SAE #1 / 14″

electric, EC300 interface

Yes

SAE C (live)

SLDPRT

740989A

SAE #1 / 14″

electric, EC300 interface

Yes

SAE B (live)

SLDPRT

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