Page 697 - LMSCatalog21
P. 697

 ENGINE ACCESSORIES
685
Velvet Drive 72 Series Marine Transmissions are available in a direct drive, in-line reduction and V-drive configuration. They include a wide selection of gear ratios, proven reliability and a heavy duty cast iron case. The 72 Series transmissions is rated for use with in pleasure craft, light duty commercial and heavy duty commercial applications. Pleasure craft rating is defined as full throttle operation is used 5% or less and cruising speed at 80% or less. Total running time is 400 hours a year or less. Light duty commercial is defined as full throttle operation is used 5% or less with 75% of full throttle operation being used for longer durations. Total running time is 1500 hours a year or less. Heavy duty commercial is much the same as light duty but extends running time to 2500 hours or less.
 Velvet Drive 72 Series In-Line reduction gear marine transmission. The 72 Series reduction gears can be used with either standard or reverse rotation engines by simply rotating the hydraulic pump mounted on the front of the transmission. Re- duction ratios include 1.52, 1.88, 2.10, 2.57 & 2.91:1
Direct Drive Power Ratings
 Velvet Drive 72 Series Direct Drive ma- rine transmission. The 72 Series Direct Drives can be used with either standard or reverse rotation engines by simply rotating the hydraulic pump mounted on the front of the transmission.
Transmission Model
BOR 72C Pleasure BOR 72C Commercial
Gas engine torque 595 lb. ft. 425 lb. ft.
Diesel engine torque 450 lb. ft.
350 lb. ft.
   Reduction Gear Power Ratings
 Transmission Model
BOR 72C Pleasure BOR 72C Commercial BOR 72C Pleasure BOR 72C Commercial
Ratio
1.52, 1.88, 2.10 1.52, 1.88, 2.10 2.57, 2.91 2.57, 2.91
Gas engine torque 495 lb. ft. 400 lb. ft. 595 lb. ft. 425 lb. ft.
Diesel engine torque
375 lb. ft.
325 lb. ft.
450 lb. ft.
350 lb. ft.
    A
B
D
Weight and Dimensions
 Transmission Model
BOR 72C Direct Drive BOR 72C Reduction Gear
A
5.63” 5.63”
B
5.69” 5.69”
C D Weight
11.44” 5” 109 lbs. 17.79” 5” 153 lbs.
      C
    Velvet Drive 72 Series V-Drives. The 72 Series V-Drives can be used with either standard or reverse rotation engines by simply rotating the hydraulic pump mounted on the front of the trans- mission. Opposite rotating propellers can be provided using twin, like rotation engines. Reduction ratios include 1.20, 1.51, 1.99 & 2.49:1
V-Drive Power Ratings
 Transmission Model
BOR 72C Pleasure BOR 72C Commercial BOR 72C Pleasure BOR 72C Commercial
Ratio
1.51, 1.21 1.51, 1.21 1.99, 2.49 1.99, 2.49
Gas engine Diesel engine
torque
495 lb. ft. 400 lb. ft. 435 lb. ft. 375 lb. ft.
torque
375 lb. ft. 325 lb. ft. 330 lb. ft. 305 lb. ft.
 TRANSMISSION




















































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