Replacing bulkhead foam and tabbing to deck

Status
Not open for further replies.
S

Sven Ondelay

On my recently acquired 1973 O'day 22 there is what appears to be a thick bead of foam material between the bulkhead and the hull and deck. I would like to remove this material as it is unsightly, replace it with new material. While I'm at it I am thinking of tabbing and glassing the bulkheads (1 for anchor line locker, and 1 seperating the forward/porta-head
 
J

Justin - O'day Owners' Web

Bulkheads

Sven - Boats work under sail and sometimes adding stiffness in one area transfers load to an area not designed to take it. I don't know about what will happen if you do this but I would have a good glass person or a surveyor you know has information look at if before you do anything. I know of one owner who added a hard dodger to a larger cruising boat and started seeing cracks at the chainplate attachment points because the boat no longer flexed. Ideally, there'd be no problem but you don't want to find out the hard way. Justin - O'day Owners' Web
 
D

Don Evans

Tabbing Bulkheads

Most of the mid size models of O'Day had "floating" bulkheads. Generally the term is used to describe a negative condition when tabbed bulkheads break loose and become adrift. But in O'Days, the bulkheads fit or float in a pocket built into the hull liner. This allows the bulkhead to contribute both stiffness to the hull without creating a "hard point" up against the hull inside and allow the boat to flex where needed. I agree with Justin that you could be introducing a bunch more variables to the design of your boat by tabbing them hard to the hull. If the bulkheads were never tabbed to the hull, there may be a logical reason why, rather than just an oversight of the naval designer. I have a gasket that finishes the bulkhead/hull joint. I have never considered changing it. I think it serves no other purpose than cosmetic. I suppose one could pull it off but as with most things, its not always as easy as it appears. Don
 
S

Sven

Thanks Justin and Don

Thank you for your replies Justin and Don. The material I referred to as foam is the cosmetic gasket Don mentioned. I will simply replace it with something that looks neat and finished, and not glass/tab to the hull, for the reasons you mentioned. Besides, there is always plenty to do! Regards to you both. Sven
 
Status
Not open for further replies.