Safety wire magni teeter pivot lock ring yes or no

jeffwill

Newbie
Joined
Jan 23, 2017
Messages
22
Location
Leander Tx
On a magni rotorhead there is a threaded barrel to position the rotor chordwise on the teeter bolt. Once adjusted this barrel is prevented from rotating by a round lock nut.

Is there any reason to avoid using safety wire to secure the lock ring? Due to the materials involved the lock ring is not torqued to a very high value. In my experience with helicopters such things always got safetied.
Thanks
 

Tyger

Active Member
Joined
Nov 25, 2017
Messages
243
Location
Germantown, NY
Aircraft
Magni M16
Total Flight Time
225
I see no one ever answered your question, but I, for one, am not sure what the "threaded barrel" is that you're talking about.
 

Mike G

Junior Member
Joined
Jun 16, 2005
Messages
1,474
Location
Lillebonne France
Aircraft
Owned Magni M16 now ELA 07
Total Flight Time
550FW + 500 gyro
Up until yesterday I agreed with Brian that locking wire was unnecessary.
Yesterday I was asked to look at a Magni that was used for tourist flights around a very popular site in France.
The 1/rev vibration exceeded 6 IPS, it beat my previous record of 2.8 IPS easily.
The locking nut had come loose and the rotor had slowly moved chordwise to the limit so was 2 mm (0.080") off centre.
So there may be an argument that locking wire would be a good idea.
 
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