1968 Aquasport Flatback Diver - Shipoke Rebuild for Hefner

[gran398]

im guessing she's gonna get a closed transom?

Aaron, yes, an open transom. Eugene has a custom plan for the transom. Stay tuned, it's great thinking.

Rick:

Edit: Addressing your "derail" post, since deleted:

There is a fine line between natural flow and derail. In this instance, from a technical standpoint, this afternoons' input may have been construed by some as "derail". However, your judgement was most likely skewed by Lew's comment "Thread of the Year."

It is great for our club to have a professional builder that inputs here. As Eugene has stated, this  is how they do it commercially. Time is money, and they get it done.  But my word...this ain't a Gougeon Brothers technical thread.

I will be the first to say that Eugene could care less about interjected/related/topic-derived/ slightly to quite amusing discourse on his thread.



ashley:

Welcome!  You have a rare and desirable sweet "skin" to start...and one of the best rebuild shops in the country capable of turning your dream to reality.

Good deal, we're looking forward to your build

PS...after spending 20 minutes on this post, went to post, see other posts before. Not going back to change, takes too much time. ....Here's the post friends.

[seabob4]

Scott, you crack me up!!!

Gotta go catch a train...  

And now that I read back, I'd say Eugene de-railed his own thread!  How dare he!

Go Gators, Eugene...  

[dirtwheelsfl]

Driskell for president!

[GoneFission]

Scott, you crack me up!!!
Gotta go catch a train...  
And now that I read back, I'd say Eugene de-railed his own thread!  How dare he!

You can't derail your own thread!  Cain't be did...   :rambo:

[seabob4]

Scott, you crack me up!!!
Gotta go catch a train...  
And now that I read back, I'd say Eugene de-railed his own thread!  How dare he!

You can't derail your own thread!  Cain't be did...   :rambo:

Rule 11.2.98, De-railment, sub-part D-

"The OP can NOT de-rail a thread..."

Well you're right, CJ!

Back to our regularly scheduled programming...

[HIFLUTIN]

Woo -David Allen Coe-"I gagged Linda Lovelace" a true classic among others.
Hey Eugene is it ok for is part time boat guys get a peek,
Gettin ready to do a 190
Need tips from the "Pro"

[gran398]

Yo bro,

 Eugene is abroad on fam vacation for awhile, most likely limited 'net.  Have a great time Eugene

Give him a holler when he gets back, all AS members are welcome there.

[seabob4]

Soon as Maggie gets home, gonna stop in myself.

[ashley]

Eugene wrote - Transom core is glassed in. It was first constructed out of 2 sheets of 3/4" Penske board laminated  together with 2x 3/4 mat between them. The 1.5" transom core was then clamped onto the transom with 3 x 3/4 mat between the core and the transom. After clamping overnight, the edges were smoothed with a filet of putty and 3/4 oz mat and 3x 1708 were glassed over top.

[ashley]

[ashley]

[seabob4]

Oohh, pretty!  So what's our final laminate before it get's gelled?  3610?  Or is that gonna be it?  Maybe a couple layers of 3610?

[Group W Bench]

Completed transom lam schedule is as follows:

3/4 oz mat
3 x 1708
3 x 3/4 oz mat (clamped between core and outer transom lams)
3/4" Penske, 3/4 oz mat, 3/4" Penske (1.5" core)
3 x 1708
3/4 oz mat

Remember that the hullside and bottom laminates extend w/ overlaps 6" into the outer skin laminates of the transom as well prior to clamping of the core. Easy and effective way to beef up the lam schedule.

[Group W Bench]

The boat is leveled on the dolly and hook/sag taken out of bottom by bracing 2x6 along the chine until the hook falls out of the bottom. We just putty the uprights in place on the floor and long 2x6 and don't move them until we flip the boat. Hooks form in these old boats, and many restored flatbacks have trouble getting the bow up b/c the hook is most pronounced in the flat aft section.



Some folks have asked about the hook concept referenced in an earlier post. I may have not provided a sufficient explanation for the concept of the hook in the hull and the importance of bracing  to mitigate the hook on rebuilds. A hook is an upward indention/inversion in the hull that can be intentional, but is more often the result of the weight of a boat resting on bunks or braces for a prolonged period of time. Many flatbacks have developed these hooks from trailer bunks. They generally appear 2-3 feet forward of the transom.

Hooks can be advantageous in applications such as ski boats where you want to keep the bow down. In a flatback, a hook will tend to make it difficult to free the bow while running, as the hook creates transom lift. That is why bracing and jacking up these flatbacks off the dolly bunks until the hook falls out is imperative. That is also one of the advantages of fully removing all stringers rather than simply cutting off the tops. It is easier to manipulate the gutted hull to a flat bottom again prior to glassing the bottom running surface. I hope that clears up some confusion.

[Capt. Bob]

It is easier to manipulate the gutted hull to a flat bottom again prior to glassing the bottom running surface

Did you do something physical to manipulate the hook out or just rely on gravity?