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Author Topic: 71 22-2 Flatback Re-build Watch and Comment Please  (Read 13637 times)

May 13, 2018, 08:27:26 PM
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Marcel4t

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71 22-2 Flatback Re-build Watch and Comment Please
« on: May 13, 2018, 08:27:26 PM »
Hey everyone,
I already introduced myself in the "stop lurking" post.  I'll be on here asking questions for a long time.  I made a video of my new acquisition, and plan on doing a V-log.  I would love some input on what you guys think.  Move forward to after pressure washing if you dont want to watch the whole thing to get an idea of what kind of shape it's in. 
One odd thing:  Gas tank is under the center console?  I'm imagining that isn't usual? 
Also, the cap is in pretty bad shape, but I imagine I can take it off, stiffen it up, repair it, and reuse it?
Anyways, hope you enjoy watching!   

https://youtu.be/-tUemh2pSSs
1971 222

May 13, 2018, 10:08:41 PM
Reply #1

Capt. Bob

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #1 on: May 13, 2018, 10:08:41 PM »
So you found a "Diver" model. :great02:

I'm thinking this thread (because of the vid) is your first step in the re-build process so we might move and re-title this topic.
Light reading and a number of good ideas found here.
https://classicaquasport.com/smf/index.php?board=39.0

Good luck and keep posting. :thumright:
]
Capt. Bob
1991 210 Walkaround
2018 Yamaha 150 4 Stroke
"Reef or Madness IV"

May 13, 2018, 10:52:24 PM
Reply #2

Marcel4t

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #2 on: May 13, 2018, 10:52:24 PM »
Thanks!
What is a "Diver" model? 
1971 222

May 14, 2018, 01:02:11 AM
Reply #3

theFunsmith

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #3 on: May 14, 2018, 01:02:11 AM »
I'll be following the progress. Only tip I can give is that you might want to adjust the audio levels with the music and the talking, so they are roughly the same volume. Look forward to the next video.

May 14, 2018, 03:46:05 AM
Reply #4

mshugg

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #4 on: May 14, 2018, 03:46:05 AM »
The clean up really makes a difference.  You have a cool project in front of you. 

Since your model is 3 piece construction, it’s quite manageable to remove the cap, re-core it, and re-attach.  I would advise that you take things a step at time.  It’s probably better to do the transom first, then the stringers, then the sole, and finish with the cap; rather than strip everything at once.  Even then, you’ll want to take steps to make sure the hull retains it’s shape.


May 14, 2018, 05:12:35 AM
Reply #5

RickK

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #5 on: May 14, 2018, 05:12:35 AM »
Cleaned up well.
Several options were available for the FB - one being the viewing windows you found in the baitwell forward of the console in the floor. Some people remove them and fill the holes and not use the baitwell, others leave them in and use the baitwell. You noticed the pickup on the bottom of the hull up by that baitwell, that feeds the baitwell.
The console is not original, that thing is huge.  The fuel tank was originally where yours is.
I agree with Capt Bob that we should rename this thread and you should use it to post the progress - are you ok with that?
I couldn't get a real good look at the hull that was beside yours in the field where you picked it up but it looked like another FB.  The top of the transom looked different but it may have been rebuilt too.
Rick
1971 "170" with 115 Johnson (It's usable but not 100% finished)

1992 230 Explorer with 250 Yamaha

May 14, 2018, 07:24:25 AM
Reply #6

Marcel4t

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Re:71 22-2 Flatback Re-build Watch and Comment Please
« Reply #6 on: May 14, 2018, 07:24:25 AM »
Cleaned up well.
Several options were available for the FB - one being the viewing windows you found in the baitwell forward of the console in the floor. Some people remove them and fill the holes and not use the baitwell, others leave them in and use the baitwell. You noticed the pickup on the bottom of the hull up by that baitwell, that feeds the baitwell.
The console is not original, that thing is huge.  The fuel tank was originally where yours is.
I agree with Capt Bob that we should rename this thread and you should use it to post the progress - are you ok with that?
I couldn't get a real good look at the hull that was beside yours in the field where you picked it up but it looked like another FB.  The top of the transom looked different but it may have been rebuilt too.
I was thinking of keeping the viewing windows, I read a thread about someone replacing them and using a metal frame to secure them in.
Yes, please feel free to rename!
I hope I can find some other FBs in my area to check out and see how they laid them out.  The console is big, and with the gas tank down below floor I can use that space for batts and storage.  Id like to get some of those tackle drawer inserts for the front maybe. 
That other boat was not a FB. 
The clean up really makes a difference.  You have a cool project in front of you. 

Since your model is 3 piece construction, it’s quite manageable to remove the cap, re-core it, and re-attach.  I would advise that you take things a step at time.  It’s probably better to do the transom first, then the stringers, then the sole, and finish with the cap; rather than strip everything at once.  Even then, you’ll want to take steps to make sure the hull retains it’s shape.
I read someplace people build cradles for the hull?  I'd like to get the boat off the trailer when Im working on it, so much easier to get in and out. 
I'll be following the progress. Only tip I can give is that you might want to adjust the audio levels with the music and the talking, so they are roughly the same volume. Look forward to the next video.
Thanks for the tip, I'll keep the volumes in mind next time for sure.
1971 222

May 14, 2018, 07:25:52 AM
Reply #7

Capt. Bob

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Capt. Bob
1991 210 Walkaround
2018 Yamaha 150 4 Stroke
"Reef or Madness IV"

May 14, 2018, 09:57:38 AM
Reply #8

Marcel4t

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1971 222

May 14, 2018, 09:58:47 AM
Reply #9

Marcel4t

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #9 on: May 14, 2018, 09:58:47 AM »
Question...is it normal for the keels on these FB to have a curve? 
1971 222

May 14, 2018, 10:22:28 AM
Reply #10

Capt. Bob

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #10 on: May 14, 2018, 10:22:28 AM »
Looks like a hook to me but I'm not the expert here.
]
Capt. Bob
1991 210 Walkaround
2018 Yamaha 150 4 Stroke
"Reef or Madness IV"

May 14, 2018, 02:38:26 PM
Reply #11

mshugg

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #11 on: May 14, 2018, 02:38:26 PM »
Looks like a hook to me too.  The good news is, you can fix it when your redo the stringers, and you will have less fairing later.

May 15, 2018, 10:30:34 AM
Reply #12

Marcel4t

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #12 on: May 15, 2018, 10:30:34 AM »
Looks like a hook to me too.  The good news is, you can fix it when your redo the stringers, and you will have less fairing later.
How do I fix that?  Any builds on here that show that process?
1971 222

May 15, 2018, 12:18:07 PM
Reply #13

Capt. Bob

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #13 on: May 15, 2018, 12:18:07 PM »
You will need to flip the hull over and "board" it.  By that, you need to determine where the hook lies in relation to the hull bottom. Using a very straight (and long) board, you can visually see the shape of your hull bottom and address the high/low spots. Your hull might be fine everywhere except along that keel. You won't really know until then because your eyes can fool you. You might try stretching a string along the bottom now and see what you come up with and yes, there are "hook fixes" in the re-build forum.

Here's one.
https://classicaquasport.com/smf/index.php?topic=10287.msg131012#msg131012

Good luck. :thumright:
]
Capt. Bob
1991 210 Walkaround
2018 Yamaha 150 4 Stroke
"Reef or Madness IV"

May 15, 2018, 05:32:37 PM
Reply #14

mshugg

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Re: 71 22-2 Flatback Re-build Watch and Comment Please
« Reply #14 on: May 15, 2018, 05:32:37 PM »
The build that Capt Bob linked to shows layers of glass and fillers being used to fill in the hollow.  That’s a fine method, probably best done after you do your transom, deck and stringers. 

If it were my boat, I would try to pull as much hook out as possible prior to rebuilding the stringers.  You would need to build cradles that support the hull in a straitened condition.  Then you could either use weights, or temporary screws, to pull the hull back out to true.  Then when you glass your new stringers in, the hull would retain it’s shape.  I would opt for the screws because it gives more control.  Of course, it would leave a patch job for the holes.

You would likely still have some exterior fairing to do, but less than if you fill the whole hollow.

 

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