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Old 11-12-2008
Paul Comte Paul Comte is offline
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Compression Post - Cabin Sole issue

I have a 1979 i28. We are almost complete with that and additional structural repairs.

The Compression post may shrink a bit, ours was about a 1/16" to 3/32 shorter than the bulkhead it is attached to. The real problem is too much load on an improper material, i.e. the 3/4" plywood cabin sole.

On our boat the post loads down on top of the plywood cabin sole and crushes it, we had a bit more than 3/8" squeezed out of the sole and a slight deformation on the tops of the floors the sole rides on. I believe it totaled about 1/2" "crushed out".

On the i28 I race on, they had installed a plate as a repair. When they adjust backstay tension they still pull until the head door almost jams...

First off, how about a more details regarding your boat, like do you have a teak cabin sole or just the plywood and carpet...?

Paul Comte
Milwaukee WI
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