pins were “mirrored” from what they needed to be. Fortunately, this was caught prior to attempting to run  the actuators, and a new cable was made between the controller and the mirrored connector.  /g47/g72/g86/g86/g82/g81/g3/g47/g72/g68/g85/g81/g72/g71/g29/g3/g3/g37/g72/g3/g89/g72/g85/g92/g3/g70/g68/g85/g72/g73/g88/g79/g3/g90/g75/g72/g81/g3/g71/g72/g86/g76/g74/g81/g76/g81/g74/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g86/g3/g90/g76/g87/g75/g3/g80/g88/g79/g87/g76/g83/g79/g72/g3/g69/g72/g81/g71/g86/g3/g68/g81/g71/g3/g70/g75/g68/g81/g74/g72/g86/g3/g76/g81/g3 /g71/g76/g85/g72/g70/g87/g76/g82/g81/g17/g3/g48/g68/g78/g72/g3/g86/g88/g85/g72/g3/g87/g75/g68/g87/g3/g87/g75/g72/g3/g72/g81/g74/g76/g81/g72/g72/g85/g86/g3/g71/g72/g86/g76/g74/g81/g76/g81/g74/g3/g87/g75/g72/g3/g70/g68/g69/g79/g72/g3/g85/g82/g88/g87/g76/g81/g74/g3/g83/g85/g82/g83/g72/g85/g79/g92/g3/g70/g82/g80/g80/g88/g81/g76/g70/g68/g87/g72/g86/g3/g90/g75/g68/g87/g3/g86/g76/g71/g72/g3/g82/g73/g3/g87/g75/g72/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g3/g87/g75/g72/g3/g70/g82/g81/g81/g72/g70/g87/g82/g85/g3/g76/g86/g3/g80/g82/g88/g81/g87/g72/g71/g3/g82/g81/g3/g87/g82/g3/g87/g75/g72/g3/g87/g72/g68/g80/g3/g85/g72/g86/g83/g82/g81/g86/g76/g69/g79/g72/g3/g73/g82/g85/g3/g80/g82/g88/g81/g87/g76/g81/g74/g3/g87/g75/g72/g3/g70/g82/g81/g81/g72/g70/g87/g82/g85/g86/g17/g3/g39/g88/g85/g76/g81/g74/g3/g68/g86/g86/g72/g80/g69/g79/g92/g15/g3/g68/g79/g90/g68/g92/g86/g3/g83/g72/g85/g73/g82/g85/g80/g3/g68/g3/g73/g88/g79/g79/g3/g70/g82/g81/g87/g76/g81/g88/g76/g87/g92/g3/g87/g72/g86/g87/g3/g82/g81/g3/g87/g75/g72/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g15/g3/g77/g88/g86/g87/g3/g79/g76/g78/g72/g3/g68/g81/g92/g3/g82/g87/g75/g72/g85/g3/g70/g68/g69/g79/g72/g15/g3/g72/g89/g72/g81/g3/g76/g73/g3/g87/g75/g72/g3/g80/g68/g81/g88/g73/g68/g70/g87/g88/g85/g72/g85/g3/g74/g88/g68/g85/g68/g81/g87/g72/g72/g86/g3/g87/g75/g68/g87/g3/g76/g87/g3/g90/g68/g86/g3/g80/g68/g71/g72/g3/g68/g70/g70/g82/g85/g71/g76/g81/g74/g3/g87/g82/g3/g86/g83/g72/g70/g76/g73/g76/g70/g68/g87/g76/g82/g81/g86/g17/g3/g44/g87/g3/g76/g86/g3/g68/g79/g90/g68/g92/g86/g3/g83/g82/g86/g86/g76/g69/g79/g72/g3/g87/g75/g68/g87/g3/g87/g75/g72/g3/g86/g83/g72/g70/g76/g73/g76/g70/g68/g87/g76/g82/g81/g86/g3/g76/g81/g68/g71/g72/g84/g88/g68/g87/g72/g79/g92/g3/g71/g72/g86/g70/g85/g76/g69/g72/g71/g3/g87/g75/g72/g3/g70/g82/g81/g81/g72/g70/g87/g82/g85/g3/g79/g82/g70/g68/g87/g76/g82/g81/g86/g17/g3 On the first iteration of the Flex Cable, the two 51 pin connectors were not properly strain relieved to the  flex cable. The connectors were soldered directly to the flex cables, but no other strain relief was  provided. The connectors were then screwed into a base structure, which offered the strain relief. Any  time the connector was removed from the base structure during the assembly and debugging process,there was no longer anything providing strain relief between the connector and flex cable. This ultimately resulted in debonding of the connector from a number of the solder pads. /g3 /g47/g72/g86/g86/g82/g81/g3 /g47/g72/g68/g85/g81/g72/g71/g29/g3 /g3 /g36/g79/g90/g68/g92/g86/g3 /g83/g85/g82/g89/g76/g71/g72/g3 /g68/g3 /g83/g72/g85/g80/g68/g81/g72/g81/g87/g3/g80/g72/g70/g75/g68/g81/g76/g70/g68/g79/g3 /g86/g87/g85/g68/g76/g81/g3 /g85/g72/g79/g76/g72/g73/g3 /g80/g72/g87/g75/g82/g71/g3 /g69/g72/g87/g90/g72/g72/g81/g3 /g70/g82/g81/g81/g72/g70/g87/g82/g85/g86/g3/g68/g81/g71/g3/g68/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g15/g3/g72/g89/g72/g81/g3/g76/g73/g3/g87/g75/g72/g3/g70/g68/g69/g79/g72/g3/g90/g76/g79/g79/g3 /g79/g68/g87/g72/g85/g3 /g69/g72/g3 /g76/g81/g87/g72/g74/g85/g68/g87/g72/g71/g3 /g76/g81/g87/g82/g3 /g68/g3 /g86/g87/g85/g88/g70/g87/g88/g85/g72/g3 /g87/g75/g68/g87/g3 /g83/g85/g82/g89/g76/g71/g72/g86/g3/g86/g87/g85/g68/g76/g81/g3/g85/g72/g79/g76/g72/g73/g17/g3/g55/g75/g72/g3/g86/g72/g70/g82/g81/g71/g3/g76/g87/g72/g85/g68/g87/g76/g82/g81/g3/g82/g73/g3/g87/g75/g72/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g3/g76/g86/g3/g86/g75/g82/g90/g81/g3/g76/g81/g3/g41/g76/g74/g88/g85/g72/g3/g20/g21/g17/g3/g55/g75/g76/g86/g3/g90/g68/g86/g3/g71/g72/g86/g76/g74/g81/g72/g71/g3/g87/g82/g3/g75/g68/g89/g72/g3/g83/g72/g85/g80/g68/g81/g72/g81/g87/g3/g80/g72/g87/g68/g79/g79/g76/g70/g3 /g69/g68/g70/g78/g76/g81/g74/g3/g83/g79/g68/g87/g72/g86/g3/g11/g21/g12/g3/g68/g87/g87/g68/g70/g75/g3 /g87/g75/g72/g3 /g73/g79/g72/g91/g3 /g70/g68/g69/g79/g72/g3 /g11/g22/g12/g3 /g87/g82/g3 /g87/g75/g72/g3 /g24/g20/g3 /g83/g76/g81/g3 /g70/g82/g81/g81/g72/g70/g87/g82/g85/g3 /g11/g24/g12/g3 /g88/g86/g76/g81/g74/g3 /g73/g68/g86/g87/g72/g81/g72/g85/g86/g3 /g11/g20/g12/g17/g3 /g55/g75/g76/g86/g3 /g69/g68/g70/g78/g76/g81/g74/g3 /g83/g79/g68/g87/g72/g3 /g90/g82/g88/g79/g71/g3 /g69/g72/g3/g73/g68/g69/g85/g76/g70/g68/g87/g72/g71/g15/g3/g68/g81/g71/g3/g87/g75/g72/g81/g3/g86/g72/g81/g87/g3/g87/g82/g3/g87/g75/g72/g3/g89/g72/g81/g71/g82/g85/g3/g76/g81/g87/g72/g74/g85/g68/g87/g76/g81/g74/g3 /g87/g75/g72/g3/g70/g82/g81/g81/g72/g70/g87/g82/g85/g3/g87/g82/g3/g87/g75/g72/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g17/g3/g55/g75/g72/g3/g89/g72/g81/g71/g82/g85/g3/g90/g82/g88/g79/g71/g3/g87/g75/g72/g81/g3/g80/g82/g88/g81/g87/g3/g87/g75/g72/g3/g69/g68/g70/g78/g76/g81/g74/g3/g83/g79/g68/g87/g72/g3/g68/g81/g71/g3/g89/g72/g85/g76/g73/g92/g3/g70/g82/g81/g87/g76/g81/g88/g76/g87/g92/g3/g69/g72/g73/g82/g85/g72/g3/g71/g72/g79/g76/g89/g72/g85/g92/g17/g3/g36/g73/g87/g72/g85/g3/g85/g72/g70/g72/g76/g89/g76/g81/g74/g3/g87/g75/g72/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g15/g3/g87/g75/g76/g86/g3/g69/g68/g70/g78/g76/g81/g74/g3/g83/g79/g68/g87/g72/g3/g81/g72/g89/g72/g85/g3/g75/g68/g86/g3/g87/g82/g3/g86/g72/g83/g68/g85/g68/g87/g72/g3/g73/g85/g82/g80/g3/g87/g75/g72/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g3 /g68/g74/g68/g76/g81/g17/g3 /g55/g75/g72/g3 /g69/g68/g70/g78/g76/g81/g74/g3 /g83/g79/g68/g87/g72/g3 /g76/g87/g86/g72/g79/g73/g3 /g76/g86/g3 /g87/g75/g72/g81/g3/g73/g68/g86/g87/g72/g81/g72/g71/g3/g87/g82/g3/g87/g75/g72/g3/g71/g85/g76/g79/g79/g3/g86/g87/g85/g88/g70/g87/g88/g85/g72/g3/g11/g23/g12/g3/g88/g86/g76/g81/g74/g3/g73/g68/g86/g87/g72/g81/g72/g85/g86/g3/g11/g25/g12/g17/g3 /g55/g75/g76/g86/g3 /g85/g72/g86/g88/g79/g87/g86/g3 /g76/g81/g3 /g68/g3 /g83/g72/g85/g80/g68/g81/g72/g81/g87/g3 /g86/g87/g85/g68/g76/g81/g3 /g85/g72/g79/g76/g72/g73/g3 /g69/g72/g87/g90/g72/g72/g81/g3/g87/g75/g72/g3/g70/g82/g81/g81/g72/g70/g87/g82/g85/g3/g68/g81/g71/g3/g87/g75/g72/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g17/g3/g55/g75/g72/g3/g24/g20/g3 /g83/g76/g81/g3 /g70/g82/g81/g81/g72/g70/g87/g82/g85/g3 /g76/g86/g3 /g87/g75/g72/g81/g3 /g80/g68/g87/g72/g71/g3 /g90/g76/g87/g75/g3 /g87/g75/g72/g3 /g70/g82/g81/g87/g85/g82/g79/g79/g72/g85/g3/g70/g68/g69/g79/g72/g3/g11/g26/g12/g17/g3/g38/g88/g85/g85/g72/g81/g87/g79/g92/g15/g3/g87/g75/g72/g3/g71/g72/g86/g76/g74/g81/g3/g82/g73/g3/g87/g75/g72/g3/g86/g72/g70/g82/g81/g71/g3/g73/g79/g72/g91/g3/g70/g68/g69/g79/g72/g3/g76/g87/g72/g85/g68/g87/g76/g82/g81/g3/g75/g68/g86/g3/g81/g82/g87/g3/g69/g72/g72/g81/g3/g76/g81/g87/g72/g74/g85/g68/g87/g72/g71/g3/g76/g81/g87/g82/g3/g87/g75/g72/g3/g53/g50/g51/g40/g38/g3/g39/g85/g76/g79/g79/g17/g3 Coatings under High Contact Stress The ROPEC percussive axis uses a hardened helical cam and rotating follower arrangement to preload  and release a spring loaded impact device. This mechanism experiences over 10,000 cycles during one drilling operation alone. The majority of contact between the cam and follower is rolling contact, with a small amount of sliding contact as the follower climbs the “ramp” of the cam, and a moment of impact when the follower first contacts the cam. In an attempt to reduce friction and increase efficiency, a high contact strength, low friction coating was applied to the cam and follower surfaces (Magnaplate Nedox FM-5 and Magnaplate Nedox SF-2 respectively) as recommended by the plating manufacturer. These  coatings were applied on top of the Vascomax C300 base material. After only a few short operations, an anomaly within the drill auger mechanism was detected. Upon disassembly, it was found that the coatings were in the process of flaking off of the cam as shown in Figure 13. These flakes had become lodged in  an open bearing, creating a torque anomaly. As seen in the figure, flaking of the coatings was so bad that it was decided to simply remove the coatings from the area and allow the base material to act as the contact surface. The drill housings were then cleaned and reassembled. This issue has not appeared  again, however, it is expected that a small amount of base material is gradually wearing away as the drill Figure 12. Revised ROPEC Flex Cable  Connector Strain Relief 21 3 45 76 207