APEX r

APEX
The APEX blade shape is a significant design improvement. What we have done is to move the attachment spine to the top of the blade on both the front and back parallel to the direction of water flow as the blade traverses out and back from the boat. The spine was changed to a smooth contour and the volume calculated to effect a displacement enough to give the correct buoyancy as well as the right weight and weight distribution which affects the balance point. In addition, the blades can now be made just a hair above the FISA minimum thickness of blades to provide (i.e., of 3 mm thick blade; 2 mm in from the tip) more efficient blade work.

BigBlade 2198
A BB2198 enhanced blade shape was completed at the end of July 1998. After conducting several iterations of blade shapes using a rapid prototyping technique, new permanent tooling was made. In the summer of 1998 we improved the finish of blades and made minor changes to blade curvature and attack angle. the Dreher blades have beveled and sealed edges that even further increase blade strength and performance. Overall the blade shape changes are subtle and integrate well into the overall sculling oar design resulting in a sculling oar that is very easy to use and has excellent release characteristics, balance, and tracking through the drive. Additionally, a more polished blade finish reduces drag on the blades.