292 inline 6 with prealpha drive for 19.5 cuddy

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
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Jul 23, 2011
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49,548
Looks like rotten core material.

Grind down to good glass and build back up
 

RDTBC

Seaman Apprentice
Joined
Oct 18, 2021
Messages
32
Thanks. There was a layer of loose chopped strand type glass that came up easily. I used a wire wheel on a drill which was quite effective. Found sound glass below which looked like the hand laid up hull. I have a few hours of grinding and cutting ahead of me before it’s ready to start glassing back together, but I’m relieved to have found sound fibreglass below.
 

RDTBC

Seaman Apprentice
Joined
Oct 18, 2021
Messages
32
Looking for feedback on my repair plan. I’ve nearly finished grinding out the delaminated/deleterious fibreglass. There was a layer of chopper glass which was about 1/2” thick. It was delaminated and in poor condition. In the process of grinding this out, I gouged into the hand laid layer of the hull in a few spots. The top of attached sketch shows what I’ve removed. The bottom photo shows how I plan to reinstate the keel stringer and fibreglass. Due to the damage I caused, I thought inserting a layer of fabric would help bridge any resultant weak spots.

step 1: PB fillets at main stringers (to replace what I ground out)
step 2: tab the main stringers to replace areas that have been ground off
step 3: overlay the entire area with a layer of 1.5oz mat to create a live glass layer (allowing subsequent layers to bond better)
step 4: 6oz fabric X 12” wide tape the length of the keel stringer
step 5: pre-apply resin to fir keel stringer
step 6: peanut butter below the keel stringer, and install stringer
step 7: one layer of 1.5 oz mat over the keel stringer

I plan to use polyester resin for all the work.

Any suggested changes to this plan? Not enough? Too much? Not feasible? IMG_3969.jpeg
 

RDTBC

Seaman Apprentice
Joined
Oct 18, 2021
Messages
32
Enough with all the grinding and fibreglass dust… Tonight, I started laying new glass. Just the PB fillets to the stringers, but it’s nice to be building back rather than tearing out and grinding.
 

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Bondo

Moderator
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Apr 17, 2002
Messages
70,954
Enough with all the grinding and fibreglass dust… Tonight, I started laying new glass. Just the PB fillets to the stringers, but it’s nice to be building back rather than tearing out and grinding.
Seeing that you got the motor work done, 'n are now doin' the hull,.....
How 'bout I move this to the hull restoration forum for you,..??
 
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