Go Back  Offshoreonly.com > Technical > Detailing, Painting, & Fiberglass
Powerquest 290 Transom and Stringer Project >

Powerquest 290 Transom and Stringer Project

Notices

Powerquest 290 Transom and Stringer Project

Thread Tools
 
Old 03-27-2023 | 11:41 AM
  #11  
Thread Starter
Registered
 
Joined: Jul 2018
Posts: 36
Likes: 17
From: Evansville, Indiana
Default

The transom is glassed in, 2 layers of 1708 tabbing between 3 layers of 1708 using vinyl ester resin. I did my best to get the air out. I noticed some discoloration in the fabric where it wasn't due to an air pocket or undersaturation, but almost like the discoloration was the fabric itself. All-in-all I am pretty pleased with how it turned out. That was a LOT more work than fixing a fiberglass body panel on a car.

Speed0verdose is offline  
Reply
Old 04-02-2023 | 02:24 PM
  #12  
Thread Starter
Registered
 
Joined: Jul 2018
Posts: 36
Likes: 17
From: Evansville, Indiana
Default


Bulkhead patch Did a half lap joint, glued in

CSM and bedding compound

Dry fitting the stringers

Stringers are in with healthy amount of bedding/bonding compound, they are rock solid
Speed0verdose is offline  
Reply
Old 04-02-2023 | 02:49 PM
  #13  
jeff32's Avatar
Registered
20 Year Member
 
Joined: Jun 2004
Posts: 8,230
Likes: 580
From: St-Hyacinthe, quebec, canada
Default

Nice work! Keep it up!!
jeff32 is offline  
Reply
Old 04-06-2023 | 11:16 AM
  #14  
Thread Starter
Registered
 
Joined: Jul 2018
Posts: 36
Likes: 17
From: Evansville, Indiana
Default

As I felt the end was near and I could wrap up the rebuilding part of this project phase, I came across some splitting in the exposed part of my outer stringers. I decided to drill into some areas and see how far the moisture has wicked up through. It turns out that the rear portion of the stringers was the good part and that there was significant rot and mold up to the bulkhead,

I figured I might as well cut them out and rebuild them while the engines are out and I have the materials.

When I managed to get the stringers out, I noticed that the manufacturer didn't bevel the bottom of the stringers; they simply glued 2 pieces of 1/2" plywood together of different heights, sort of a staggered cut. In addition, the only part bedded to the hull was the rear of the stringer for about 3 inches.

Does this seem right to you? Why didn't they build these boats with encapsulated sections to avoid the moisture wicking through all the lumber? I can only assume it's a cost-based decision, and building it in sections would take too much time and money to pull off.


As you can see, there was no contact from the bottom of the stringer to the hull itself.

This was the only part of the stringer bedded to the hull.

"staggered cut"


The only bedding of the stringer to the hull
Speed0verdose is offline  
Reply
Old 04-07-2023 | 11:39 AM
  #15  
Registered
 
Joined: Jan 2022
Posts: 714
Likes: 209
From: West Michigan
Default

They gutted my 290 at the time. Sometime between my 1995 and 1999 they switched over to a single stringer in the middle. Cost cutting is what I was told. I don't know if this is too late for you or not, but Bowkers installed a flat panel between the two center stringers instead of down in between. This has been VERY nice while working to reinstall the engines. Nice surface to stand on. Just FYI.


PQ290Enticer is offline  
Reply
Old 04-07-2023 | 04:24 PM
  #16  
Thread Starter
Registered
 
Joined: Jul 2018
Posts: 36
Likes: 17
From: Evansville, Indiana
Default

Originally Posted by PQ290Enticer
They gutted my 290 at the time. Sometime between my 1995 and 1999 they switched over to a single stringer in the middle. Cost cutting is what I was told. I don't know if this is too late for you or not, but Bowkers installed a flat panel between the two center stringers instead of down in between. This has been VERY nice while working to reinstall the engines. Nice surface to stand on. Just FYI.
I haven't glassed them in yet. I like this idea.

can you post a pic of your outer stringers as well when they did those? A before & after if you have it
Speed0verdose is offline  
Reply
Old 04-07-2023 | 05:29 PM
  #17  
Registered
 
Joined: Jan 2022
Posts: 714
Likes: 209
From: West Michigan
Default









This is the best I have. Hope it helps.
PQ290Enticer is offline  
Reply
Old 04-10-2023 | 12:41 PM
  #18  
Thread Starter
Registered
 
Joined: Jul 2018
Posts: 36
Likes: 17
From: Evansville, Indiana
Default

That does help, thank you.

Did you not have to replace the outer stingers as well?
Speed0verdose is offline  
Reply
Old 05-01-2023 | 02:41 PM
  #19  
Thread Starter
Registered
 
Joined: Jul 2018
Posts: 36
Likes: 17
From: Evansville, Indiana
Default

New outer stringers are in, plywood tops are in, tabbed, glassed, and a base coat of gel coat to cure it all as well as fill in low spots and print through.

Also, drilled the motor mount holes and drain holes, sealed with resin, then gelcoat



Speed0verdose is offline  
Reply
Old 05-02-2023 | 05:16 AM
  #20  
Registered
 
Joined: Jan 2022
Posts: 714
Likes: 209
From: West Michigan
Default

Originally Posted by Speed0verdose
That does help, thank you.

Did you not have to replace the outer stingers as well?
Sorry for not seeing this earlier. I do believe that they replaced all or some of the starboard side but unfortunately I don' have any direct pics of it. What I have posted is all I have. Keep up the good work.
PQ290Enticer is offline  
Reply


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.