Is compression post installed within cabin area directly below mast step? How is it secured at each end? What type of material (4x4?) has been used? If it extends to keel, I guess that the space where a marine head or porta-pottie is normally placed would be lost. Are there any other options as far as installing a post without losing the space occupied by the porta-pottie? I would prefer to keep the porta-pottie on board instead of just using a pail? Any ideas? I do not have any sagging of the foredeck on my '71 Ty but perhaps it would still be a good idea to have one in place. Those of you who have installed a post, did you cut out a section of the cabin sole so that base of the post would go right to the keel? With the rigging slack, did you slightly jack up area below mast step before positioning post? Thanks.
atea@att.net
Questions Re Compression Post on CD Typhoon
Moderator: Jim Walsh
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Serge Zimberoff
Re: Questions Re Compression Post on CD Typhoon
Our current version consists of the following parts:
1. 1 1/4" oak block added to the underside of the step inside the cabin. It's rectangular size matches the flat area molded in the fiber glass.
2. A piece of 3" x 3" stainless angle stock 4" long. This is to sit on the ledge at the back of the porta-potty niche. (There is 1/8" rubber between this angle and the fiber glass.) To the face of this angle piece is welded a length of 3/4" ss all thread that is bent at a small angle such that it intersects with the center of the oak block (1). The angle piece is bolted to the boat with 4 - 1/4" x 20 RHMS near each corner of the angle.
Adjustment...the all thread is about 3/4" longer than the distance to the face of the oak block and the oak is bored out to just accept this end. Two nuts and a fender washer complete the parts. The upper nut was used to run the fender washer against the oak block before the mast was stepped with just a couple of turns of positive pressure. The second nut was then run up against the first as a jam nut.
Notes...a cover over the all thread of high density foam made it less of a hazard to one's body. The oak block and all thread piece had to be assembled more or less at once as the support wouldn't fit after the block was in place. The rationale for using the rear ledge of the porta potty area was that this seems to be a very stiff section of the boat that should add a serious amount of resistance before suffering any deformity to itself. Also leaves the alcove clear for porta potty or whatever.
Sorry, long but hopefully descriptive.
serge@srtrop.com
1. 1 1/4" oak block added to the underside of the step inside the cabin. It's rectangular size matches the flat area molded in the fiber glass.
2. A piece of 3" x 3" stainless angle stock 4" long. This is to sit on the ledge at the back of the porta-potty niche. (There is 1/8" rubber between this angle and the fiber glass.) To the face of this angle piece is welded a length of 3/4" ss all thread that is bent at a small angle such that it intersects with the center of the oak block (1). The angle piece is bolted to the boat with 4 - 1/4" x 20 RHMS near each corner of the angle.
Adjustment...the all thread is about 3/4" longer than the distance to the face of the oak block and the oak is bored out to just accept this end. Two nuts and a fender washer complete the parts. The upper nut was used to run the fender washer against the oak block before the mast was stepped with just a couple of turns of positive pressure. The second nut was then run up against the first as a jam nut.
Notes...a cover over the all thread of high density foam made it less of a hazard to one's body. The oak block and all thread piece had to be assembled more or less at once as the support wouldn't fit after the block was in place. The rationale for using the rear ledge of the porta potty area was that this seems to be a very stiff section of the boat that should add a serious amount of resistance before suffering any deformity to itself. Also leaves the alcove clear for porta potty or whatever.
Sorry, long but hopefully descriptive.
Jim Sullivan wrote: Is compression post installed within cabin area directly below mast step? How is it secured at each end? What type of material (4x4?) has been used? If it extends to keel, I guess that the space where a marine head or porta-pottie is normally placed would be lost. Are there any other options as far as installing a post without losing the space occupied by the porta-pottie? I would prefer to keep the porta-pottie on board instead of just using a pail? Any ideas? I do not have any sagging of the foredeck on my '71 Ty but perhaps it would still be a good idea to have one in place. Those of you who have installed a post, did you cut out a section of the cabin sole so that base of the post would go right to the keel? With the rigging slack, did you slightly jack up area below mast step before positioning post? Thanks.
serge@srtrop.com