Ultraflex Group

mechanical system guide selection steering wheel outboard inboard sterndrive boat marine accessories

Selection of steering system Selection of steering system and warnings MECHANICAL STEERING SYSTEMS

Selection of steering system

• Speed, hull, horsepower, engine type,displacement and size are major factors in boat performance and handling characteristics. The above selection guide should be used as a general reference only.
• One of the major factors in selecting a steering system is proper cable length. Due to specific routing in each boat, these approximate lengths will vary. Final selection should be made with the assistance of a qualified technician.

• Ultraflex mechanical steering systems should not be used on boats equipped with engines that exceed the maximum horsepower rating of the boat.
 

APPLICATIONS ENGINE POWER STEERING SYSTEM

 

 

 

 

 

 

 

Ultraflex hydraulic
steering systems
are recommended
for boats that
exceed 50 mph.
Always follow
engine
manufacturer’s
instructions








 

OUTBOARD

 

 

 

 


 

up to 40 kW (55cv) T67
BOAT LENGTH  
up to 30’ (9m) T85 - T71FC - T81FC -
T73NRFC - T83NRFC - T86 -
T88NR - T96 - T98NR - T91
T93ZT - T101 - T103ZT
Twin cable rotary
steering systems

INBOARD

 

 

up to 35’ (10.5m) T71FC - T81FC -
T73NRFC - T83NRFC - T86
- T88NR - T96 - T98NR - T91
- T93ZT - T101 - T103ZT
Twin cable rotary
steering systems

STERNDRIVE

POWER ASSISTED

 


 


 
T85
T71FC - T81FC -
T86 - T96
T91 - T101
Twin cable rotary
steering systems

 

NOTE: Sterndrive engines not equipped with power steering can create very high steering loads. Our hydraulic steering systems are recommended for these type of boats. For any further information please contact our Technical Service Department.

 

HOW TO MEASURE CABLE

Add. A + B + C and subtract 10 cm (4”) for each 90° bend in the cable.
For installation through the engine tilt tube, add 30,5 cm (1 ft) to the measure calculated above.
To order in foot length, divide by 30,5 and round off to next whole
foot.


Fig.1

 

Fig.2

 

Fig.3

TILT TUBE MOUNTING - Fig. 1

Example (dimensions in cm):
A (50) + B (250) + C (80) = 380 - 20 for two 90° bends = 360 + 30,5
For a thru-tube installation 390,5 cm : 30,5 = 12,8 ft; round off to 13 fit

TRANSOM SUPPORT OR SPLASHWELL MOUNTING - Fig. 2-3
Example (dimensions in cm):
A (50) + B (250) + C (80) = 380 - 20 for two 90° bends = 360: 30,5 = 11,8 ft; round off to 12 fF