Rower performance improving device for use with boat, has set of rollers placed in thole-pin, oar placed in cylindrical contact with rollers for being rotated in thole-pin along horizontal axis, and sheath placed on oar
摘要
<p>The device has a set of rollers (4) placed on a thole-pin (3) below an oar (1). The oar is placed in cylindrical contact with the rollers for being rotated in the thole-pin along a horizontal axis. The direct friction of the oar on the thole-pin is obtained by using plastic material. A sheath is placed on the oar. A positive stop is fixed on a collar of the oar for adjusting an attack angle of the oar.</p>
