re-bedding Jib Sheat tracks
- Thread starter Ken Cross
- Start date
Ken,
Eddie Breeden at Hunter support (he should be your best friend) said if there is no access on the underside then the track is fastened into a tapped, embedded aluminum plate in the deck. Some of the cabin-top hardware like the rope clutches and deck organizer are similar, meaning they have embedded plates, but the cabin-top #17 winch and traveler track are accessible by removing the appropriate cabin light.
I took a screw out of the deck organizer to see how long the screw needed to be before drilling holes for a new one on the port side and found the threads in the embedded plate were probably messed up in the factory. The screw did not want to come out easily and the screw threads looked bad. So I have to get a 1/4-20 tap and try to fix it in order to get a new screw back in. But the point was the plate was secure and did not move, i.e., not a nut. I need the tap anyway for the new organizer installation.
My one concern is that the screws penetrate the plates and fiberglass and protrude into the space between the salon ceiling and cabin top and could leak water into those spaces through the threads, but probably not very much. I could tap on the salon ceiling with a small wire rod through the deck organizer screw hole, just like you probably could through the jib track screw hole or a clutch screw hole. I need to get my new Rigid bore scope camera in there and look around and report back.
I'm not sure how to seal the screws in this situation because the have to be tightened and squeeze butyl or another sealant out. There was some residual sealant on the threads of the screw I removed... rubbery, maybe silicon.
Dan
Eddie Breeden at Hunter support (he should be your best friend) said if there is no access on the underside then the track is fastened into a tapped, embedded aluminum plate in the deck. Some of the cabin-top hardware like the rope clutches and deck organizer are similar, meaning they have embedded plates, but the cabin-top #17 winch and traveler track are accessible by removing the appropriate cabin light.
I took a screw out of the deck organizer to see how long the screw needed to be before drilling holes for a new one on the port side and found the threads in the embedded plate were probably messed up in the factory. The screw did not want to come out easily and the screw threads looked bad. So I have to get a 1/4-20 tap and try to fix it in order to get a new screw back in. But the point was the plate was secure and did not move, i.e., not a nut. I need the tap anyway for the new organizer installation.
My one concern is that the screws penetrate the plates and fiberglass and protrude into the space between the salon ceiling and cabin top and could leak water into those spaces through the threads, but probably not very much. I could tap on the salon ceiling with a small wire rod through the deck organizer screw hole, just like you probably could through the jib track screw hole or a clutch screw hole. I need to get my new Rigid bore scope camera in there and look around and report back.
I'm not sure how to seal the screws in this situation because the have to be tightened and squeeze butyl or another sealant out. There was some residual sealant on the threads of the screw I removed... rubbery, maybe silicon.
Dan
Okay, Thanks.
I'll bring by taps and some anti-seize next time I head down there.
I suspect if I put enough butyl in there both under the track and around screw head and threads it should seal. By putting butyl on the threads with anti-seize on the bottom part of the threads it should keep enough sealant on the bolt to seal. As the bolt screws in the sealant presses up toward the head. When it's all tightened down, just remove the excess.
Ken
Ken
I'll bring by taps and some anti-seize next time I head down there.
I suspect if I put enough butyl in there both under the track and around screw head and threads it should seal. By putting butyl on the threads with anti-seize on the bottom part of the threads it should keep enough sealant on the bolt to seal. As the bolt screws in the sealant presses up toward the head. When it's all tightened down, just remove the excess.
Ken
Ken