Cruiser Prop Repair

Prop Depot Commitment
  • All props brought back to OEM specs using most advanced technology Prop Press and TrueProp Software
  • Avoid the use of heat to straighten Nibral and Bronze props, by using hydraulic press and TrueProp scanning.
  • We use tig welds on every prop for maximum strength; no brazing rods are ever used
  • Props are ground, shaped and Balanced
  • Props are shipped back UPS ground or freight with proper packaging
  • Quick turnaround 1 – 2 weeks includes scanning
  • Evaluate ISO-484 tolerance for propellers
  • Analyze pitch, track, spacing, and other criteria
  • Review compliance by blade or by radius
  • Deviation maps for repair guidance and feedback
  • Pitch measurements and local pitch segments reported for each radius
  • Review past scans and data
  • Print reports for customers and update them on the status of their propeller
  • Portability: bring your data anywhere
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Description and Function of The Prop Press 360
The prop press 360 was designed to aid in the propeller repair process. Its capabilities are as follows.This design allows the propeller technician to be able to make repairs and pitch changes as required at most any given radius. As shown in the picture. The propeller is mounted on a standard marine taper shaft which ensures total contact of the inside of the tapered bore of the propeller.

When hydraulic pressure is applied to the tapered shaft the propeller is held in a rigid position. At this time the upper and lower arches which hold the 12 ton push rams are positioned at the desired point of damage or the local blade area that the repair or correction is needed. At this time pressure is applied from the upper cylinder or the lower cylinder.

At most times the upper cylinder or lower cylinder is used as a heel point and the opposite cylinder bends the propeller blade back to a desired specification. The uniqueness of this design is that both the upper and lower cylinder can be moved along the radius line as well as being able to shift right or left as whichever rotation of the propeller is being worked on.

The upper and lower push cylinders can be positioned at 90 degrees to the blade face, on the pressure side and the suction side of the blade. This allows an even push from either or both sides of the propeller blade. When the cylinders are positioned correctly, the prop press can easily change pitch and or repair pitch at any given blade radius or rake angle.

TrueProp 3-D Scan and Report
  • Digital computerized recording of the surface of each blade
  • Calculation of propeller geometry for each blade
  • Overall propeller pitch, pitch of each blade, and pitch at each inspection radius
  • Analysis of blade outline and blade-to-blade spacing
  • Support for high-performance props, progressive-pitch, and cambered blades
  • Compliance with ISO tolerance grades (Class S, 1, 2 or 3)