[Rhodes22-list] Compression Post

[Allyn Baskerville]

Patrick, I think you hit the nail on the head. Thank you, and I will take your advice on this.

Sent from my iPhone

> On Mar 7, 2021, at 2:50 PM, Patrick Cheung <chitakcheung at gmail.com> wrote:
> 
> Thanks to all ye Rhodes for your fine advice. I appreciate you all taking
> time to advise.
> 
> Allyn, I am going to leave my mast and compression post offset, it was good
> for 36 years and it will be good for many more years to come.
> 
> My head floor is about 3 inches higher than the cabin floor. The
> compression post straddles both floors, 2/3 on the higher head floor, 1/3
> on the cabin floor. I have fresh air immediately underneath the compression
> post, and the sagged decking.
> I am going to attach a picture, hopefully successful. I am going to take
> all the advice, adding vertical support all the way down to the hull.
> 
> I may lower the head floor to match the cabin floor, inspired by Peter.
> 
> Allyn, you have a unique situation. The concrete may be for ballast as
> well. I will be scared to blast the concrete away. I probably will build up
> from the concrete to support the head floor and the compression post. The
> OSB was probably for forming the concrete. But stay turned for other fine
> advice.
> 
> patrick
> 
> 
> 
>> On Sun, Mar 7, 2021 at 2:05 PM Allyn Baskerville <allynb at adsne.com> wrote:
>> 
>> Patrick, I’m working in the same area as you are.
>> 
>> Q1: I have a 2003, and the mast and compression post are offset as you
>> describe. I’m considering making a compression post that extends to under
>> the mast.
>> 
>> Q2: I don’t follow what you say about the notch. Look at my post from
>> earlier today, and they are three pieces of wood that form a box partially
>> filled with concrete to support the compression post. The center piece in
>> is immediately under the compression post but wasn’t mounted correctly (too
>> low) to support the weight of the mast. With no support under the
>> compression post, the plywood decking sagged and started cracking. There
>> needs to be support under the compression post. The OSB (!) wood in my
>> support is not treated in any way.
>> 
>> Sent from my iPhone
>> 
>>> On Mar 6, 2021, at 4:08 PM, Patrick Cheung <chitakcheung at gmail.com>
>> wrote:
>>> 
>>> Dear Rhodies,
>>> 
>>> I am seeking advice from you all.
>>> 
>>> The compression post is sinking approximately half an inch. I removed
>> both
>>> floors in the main cabin and in the head area. Both plywood floors
>> clearly
>>> sagged with the weight of mast and compression post resting on it.
>> Sitting
>>> at the companion way one day, and staring at the mast and compression
>> post,
>>> I noticed they don't line up, the compression post is about 2 inches to
>> the
>>> starboard.
>>> 
>>> Question 1: Does your mast and compression post line up?
>>> 
>>> Question 2: Compression post is notched, 2/3 sitting on the head floor,
>> 1/3
>>> sitting on the main floor, and there's no support immediately under the
>>> compression post. Is it advisable to add support under the compression
>>> post, all the way down to the hull?
>>> 
>>> Since I own the boat, the shrouds are always hand tightened.
>>> 
>>> Thank you in advance for your advice,
>>> 
>>> Chi Tak,
>>> Duck
>>> Lake Simcoe, Ontario
>> 
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