Xenon mast crack

Greg Vos

Active Member
Joined
May 26, 2019
Messages
347
Location
Cape Town
Aircraft
R44/22 H269/300 MD 500 Magni (all); Xenon RST; DTA; ELA; MTO
Total Flight Time
Stoped counting at 3000
Please can you guys look at a mast crack on a 200 hour 8 year old xenonRST
I want to fit a boubler plate and spin the mast around, by turning it around will enable drilling new holes in virgin metal, the crack is not yet into the box section, I assume this is where the mast integrity is?
still retain the top as top using the same holes to mount the rotor head and cabin mounting points at the base, with only the new holes being drilled for the mixer and the cabin top mounting
Do you guys think it’s a plan, or should I replace the mast profile?
 

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kolibri282

Super Member
Joined
Aug 2, 2009
Messages
2,903
Location
Duesseldorf
Sorry, Greg, I came across this one only now. If you already solved the problem just skip this post. If not it might help to have a picture showing the whole mast with the spot indicated, where the crack is. I would assume that the crack developed in an area of alternating stress. If that is the case turning the mast around would probably not help. Reinforcing the section where the crack is might work though.

Cheers,

Juergen
 

Greg Vos

Active Member
Joined
May 26, 2019
Messages
347
Location
Cape Town
Aircraft
R44/22 H269/300 MD 500 Magni (all); Xenon RST; DTA; ELA; MTO
Total Flight Time
Stoped counting at 3000
Sorry, Greg, I came across this one only now. If you already solved the problem just skip this post. If not it might help to have a picture showing the whole mast with the spot indicated, where the crack is. I would assume that the crack developed in an area of alternating stress. If that is the case turning the mast around would probably not help. Reinforcing the section where the crack is might work though.

Cheers,

Juergen
Thanks Kolobri

yes I did the mast reinforcement, its holding up well we have done some spirited flying with it and check it on a regular basis the crack is not going any further
 

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