CAMDRIVE
200 PSRU
DESIGN CRITERIA
When laying out the specifications for a Propeller Speed Reduction Unit
several basic functions must be provided for in the design. The CAMDRIVE
200 is fitted to both the CAM 100 and the CAM 125 engines. The
following points in simple form are the main items which were to be considered.
1. Reliability
2. Dependability
3. Matched
Ratio to engine Power Curve
4. Ruggedness
to handle Power Output
5. Isolation
of the Propeller from the Crankshaft
6. Axial
accuracy and stability under all Power Transmission Loads
The input sprocket it attached to the flywheel through a torque plate.
The radial loads are taken by the lower bearing (3) and axial stability is
provided through the torque plate. The rigidity of the housing must be
sufficient to prevent and distortion resulting from torque or gyroscopic
precession loads.
The major radial and thrust loads are taken through the double row
axial/radial ball bearings (2) while axial stability is provided for by the
nose cone ball bearing (1).
It is imperative that the sprockets remain in precise alignment at all
times and under all loads. The choice of components is critical, but none is
more important that the integrity and rigidity of housing.
The CAMDRIVE 200 has proven itself to be a heavy duty Redrive with ten years of service in the field. Design specifications and rugged components have proved their worth.