Truing lifting strakes: Ondarvr

[Tail_Gunner]

Ive lost 3-4 mph this year..And a close look at the bottom i have found the inside lifting strakes have hooked about 2to3/16" in the last 12-14 inches..or bowed...The hull under the motor is a true as it can be..

Truing these strakes is short job very easy to me anyway....Heres my concern jacking the boat up on the outside chines or supporting on them..Will that further deform the inside due to the pressure points... Or does a person support the boat on the keel???

Can i make something up as simple a carbisol for a filler with no cloth...Any suggestions would be appreciated..Umm the hull is still underwarranty from wellcraft..

 

[ondarvr]

Re: Truing lifting strakes: Ondarvr

Make sure this wasn't designed into the hull, probably wasn't, but sometimes it is.

Is this the first time you checked this area, or can you confirm this is a recent change.

I would check to see if the rest of the hull has this same hook (not just the strakes).

That amount of fill should be covered with glass when done, filler itself could easily crack when its that thick.

The first step though would be to check with the dealer to see if something like this will be covered under the warranty.

 

[Bob_VT]

Re: Truing lifting strakes: Ondarvr

Who set up the trailer? That is one reliable cause for a hook.

 

[Tail_Gunner]

Re: Truing lifting strakes: Ondarvr

The dealer did...And since sold out....I have talked to the west coast rep and he approved some expensesive interior warranty work...Wellcraft is one classy company in my book..Id hate to call them out on such a small issue to me...

But if something else is going on i need to get on top of it. I will be the first to admit i know little of hulls..I believe it has fiberglass stringers Ill post some pics the strakes do sit on the trailer boards

 

[Tail_Gunner]

Re: Truing lifting strakes: Ondarvr

Make sure this wasn't designed into the hull, probably wasn't, but sometimes it is.


There is a hook built in..or tab pics coming

Is this the first time you checked this area, or can you confirm this is a recent change.


This is the first year i have lost the speed


I would check to see if the rest of the hull has this same hook (not just the strakes).


The surface area under the motor between the strakes is perfect



That amount of fill should be covered with glass when done, filler itself could easily crack when its that thick.

The first step though would be to check with the dealer to see if something like this will be covered under the warranty.

I guess i will take it to pacific power boats and get there read on it...There is no wellcraft dealer in portland

 

[Tail_Gunner]

Re: Truing lifting strakes: Ondarvr

Thats how she sits dunno if you can see the bend

Theres the built in hook or baby tab way outboard at 45degree angle

 

[ondarvr]

Re: Truing lifting strakes: Ondarvr

There must be a wellcraft owners club out there someplace, somebody should have the same boat and can check their hull to see if its similar.

 

[Tail_Gunner]

Re: Truing lifting strakes: Ondarvr

Well ive never seen one...RC construction was the only guy on this site that had one..

http://pacificpowerboats.reachlocal.net/GenWebPage.ihtml?formid=1

Ill take it to these guys and if its bad..Guess ill call Wellcraft...I am sure they will be thrilled

 

[sasto]

Re: Truing lifting strakes: Ondarvr

I've seen this before on a different boat. The problem was deternined to be uncured filler used in the strake. The manufacturer filled the strake with putty (common practice) and glassed over it. The filler was styrene based. By glassing over the uncured filler there was no place for the styrene to escape and distorted the hull. We evidenced this by drilling a small hole in the strake and smelled nothing but styrene. An uncured strake can distort over time especially on the trailer. Hope you find a suitable solution.

 

[Tail_Gunner]

Re: Truing lifting strakes: Ondarvr

I've seen this before on a different boat. The problem was deternined to be uncured filler used in the strake. The manufacturer filled the strake with putty (common practice) and glassed over it. The filler was styrene based. By glassing over the uncured filler there was no place for the styrene to escape and distorted the hull. We evidenced this by drilling a small hole in the strake and smelled nothing but styrene. An uncured strake can distort over time especially on the trailer. Hope you find a suitable solution.

Intresting thank you for the observation..I was on the phone with powerboats this morning..He thought it might be a foam compaction deal...That is the foam was poured with the deck and over filled. Over time the foam shrinks actually pulling the hull with it..Thats a new thought...Sounds crazy but i have had to seperate a deck from foam..small area to about 10" long and 2" wide...Couldnt do it had to cut the deck off in a strip..Urethane foam really sticks and is a very strong product

But i will tap the strakes and take a sniff..Wouldnt the filler still be soft??? if that was the case

 

[sasto]

Re: Truing lifting strakes: Ondarvr

Tail Gunner, Yes, the filler would be a little soft, and stinky. I have seen this only once, but after talking to others at the dock and other boatbuilders, I found it is more commom than I thought. When we were building boats we would fill the strake and lay-up glass over the filler before the filler "kicked" to avoid the extra time and effort in fairing. We changed that practice. Let us know your findings.