stringer bedding thickness

1cobia

Cadet
Joined
Sep 7, 2008
Messages
23
How thick should the bedding be between the stringers and the hull?
I will be using pl premium.
 

92excel

Chief Petty Officer
Joined
Oct 6, 2008
Messages
477
Re: stringer bedding thickness

you just want it off the hull 1/8 or 1/4 is fine..
 

1cobia

Cadet
Joined
Sep 7, 2008
Messages
23
Re: stringer bedding thickness

Thanks,if it verys to 1/2" is that still good.
 

Davinciman

Seaman
Joined
Feb 25, 2009
Messages
67
Re: stringer bedding thickness

you just want it off the hull 1/8 or 1/4 is fine..

Completely, or in blobs along the stringer?
Then filleted? - my stringers looked like they were bedded that way...with concrete!
Do they do this to keep solids against the hull from cracking during stress?

Sorry if I butted in.
 

92excel

Chief Petty Officer
Joined
Oct 6, 2008
Messages
477
Re: stringer bedding thickness

the reason you bed the stringers is to avoid hard spots (stress points) which lead to cracking..

unless the stringers were cut perfect then no the gap will not be completly uniform the entire run..if you have not cut your stringers i suggest post and scribe as apposed to using the old as a template.. as long as the stringer doesnt touch the hull at any point and your bedding material is filling your gap then you will be good. you want to completely fill the gap as well.
 

Davinciman

Seaman
Joined
Feb 25, 2009
Messages
67
Re: stringer bedding thickness

The reason I'm asking is my stringers were heavily blobbed in an alternating pattern with PB with definite gaps underneath presumably to be filled with the foam.

My stringers are 1" mahogany ruff cut; drying as we speak, hopefully usable

I was thinking the same system with pl premium then a fillet of PB to ease the corner for FG.

The pl being the shock absorber, is that the right idea?

Thanks!

This is why I read all the threads I can- search just doesn't cut it sometimes
 

92excel

Chief Petty Officer
Joined
Oct 6, 2008
Messages
477
Re: stringer bedding thickness

i wouldnt do the blog method. foam wont make it there to fill the gaps as you suggested..they will be sealed off after you wrap the stringers in glass..

the blog method will lead to stress points..the pl once dry will be solid and not flex. the bedding is to distribute the stress even the entire length of the stringer.. blobbing would do the oposite.

fill the entire gap with your bedding material..

the fillet to lessen the curve is a good idea.
 
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