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CHUCK'S WEB SITE
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Date: 1-14-2023
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Number of Hours: 1.50
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Manual Reference:
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Brief Description: Securing Throttle Cables To Quandrants
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After connecting the pilot's dual reversing throttle quadrant to its throttle cable, I found that the wire "swivel" connector in no way allowed the cable securing device to swivel as the throttle lever is rotated foreward or aft to change the throttle setting.
I was able to adjust the position/angle of the cable as it passed through the cable hole in the bolt when it was tightened and locked against the side of the throttle lever and make it just barely work over the full range of travel. However, it appears it may be placing some bending stress on the cable at each end of the travel.
I spent some time this morning researching some new hardware which would allow the fabrication of a true wire swivel mount for the cable to elleviate this binding at the ends of the lever travel.
I placed am order with McMaster-Carr for the hardware, and we'll see when it arrives if I can make it work as an actually swivelling swivel mount.
NOTE: I studied this further and fould my problem. It was a combination of overtightening the nut down on the washers, and slight tolerance variations in the placement of the wire hole through the screw. The holes appear to have been drilled too close to the sidewall of the lever, causing the wire to compress against the washer, and then the lever as well, causing the binding and failure to swivel. Since the hole can't be moved, I removed some material from the affected area of the lever to provide more space between the wire and the lever. This appears to have resolved the failure of the mount to swivel, as long as the wire can be tightened enough to lock in pace through the hole and not slip its position as the lever is moved.
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When the thin washer is placed against the lever and the wire inserted, there's not enough clearance.
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Revoving lever material, and thinning it slightly, can provide enough clearance to lock and swivell.
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There must be enough clearance from the lever to lock the wire against the hole, not the washer.
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