Safety wire and Oil Cooler Air Valve ( 3 hrs )
Finished safety wiring Main Gear Brackets for Wheel Fairings. Determined .032" vs .041" wire is much easier with these smaller bolts, closely spaced. Started revision to Oil Cooler to add a 4"
butterfly air valve to control oil temp in cold air. [I got a good deal on mine when a friend determined he couldn't use his]. Drilled .047" hole through the lever arm & rod of the valve, so I could "pin" the arm using .041" SS safety wire. This adds security since otherwise the arm is secured only by a small bolt clamping on the round rod. It wasn't easy drilling with this tiny diameter drill, but going very slowly worked - glad the parts are aluminum. Set the arm so it travels from -45 deg closed, to +45 deg open. Since I had not used F-14107 bracket to mount the Throttle, Prop, Mixture controls below the panel (
instead mounted at bottom of IP, through the panel), it was available to create a much smaller bracket. After deburring, I mounted under panel to right & below the Mixture control. It's a straight path out the firewall hole, then large radius brings it to Oil Cooler valve control arm.
 |
Completed safety wiring bolts for wheel fairing brackets |
 |
Bowden (push-pull) cable, existing
4" duct, and new TCW air valve |
 |
after drilling hole and "pinning" arm to rod w/ safety wire |
 |
approx position of air valve, angled to
align with control cable |
 |
closed position |
 |
sacrificed unused F-14107 bracket to make small one |
 |
mock up fit. Will add label above (Push to Cool Oil) |
 |
View from LH side. Will prime and paint next |