197? 240 Sea Hunter Build

[Tx49]

Question about blocking up. I am going to re-do my bunking/blocking for the support of the boat for the time being. What I wanted to find out is how the boat should sit for purposes of establishing "LEVEL". Should chines be set level and then I can use offset measurements fom that for my "control level". Should I use the tops of the existing stringers and establish a control line off of that before i remove them? The reason this came up again is that I found the mercruiser installation instructions for both stern drive and straight/vee drive online. They give dimensions for the crankshaft centerline at the transom. i need to carry that measurement level through the engine bed to figure out where to put the mounts and stringers. So before i know what is the crankshaft line I need to know what I am orienting it to. So I need to know how to "LEVEL" the boat. I know this is awful wordy, sorry for that, I hope i wasn't too confusing.

[dirtwheelsfl]

Natural waterline is what id try to level off of. Get a couple points on each side of the hull and use a water level to get all the points the same.

[Tx49]

Thanks Chris. By Natural waterline do you mean the waterline stripe which is the intended waterline or the actual waterline. If actual is what you mean, well I can't splash it to find out and the hull has been out of the water too long and is too weathered to find it. I think as far as the final ride attitude, I am going to have to just spread things out and hope for the best. Then add ballast if i need to. but for figuring out the crankshaft centerline, use the waterline as intended from the factory as my leveling control?

[seabob4]

Johnny,
Obviously what you're looking at is your X dimension (on I/Os), and subsequently wanting to glass in the fwd engine beds such that the motor will fall into the adjustment range of the mounts to allow the drive shaft to easily slide into the tranny.  Once you have your X dim, you can use the dimensions given here (in this case, a 350 MAG for illustration purposes) to get a real close estimate in regards to stringer height, width, and engine bed location...http://www.mercurymarine.com/media/merc ... 57-009.pdf

[Tx49]

Johnny,
Obviously what you're looking at is your X dimension (on I/Os), and subsequently wanting to glass in the fwd engine beds such that the motor will fall into the adjustment range of the mounts to allow the drive shaft to easily slide into the tranny.  Once you have your X dim, you can use the dimensions given here (in this case, a 350 MAG for illustration purposes) to get a real close estimate in regards to stringer height, width, and engine bed location...http://www.mercurymarine.com/media/merc ... 57-009.pdf

Bob, that is part of what I'm doing and that pdf is a lot of help. but I still need to figure out a total control line. Should i just base it off of the existing stringers. I need to get the control line before I start pulling stringers and cutting out the casting deck and outboard well.

[seabob4]

Think you're just pretty much gonna have to go with your gut on this one.  There really isn't a lot out there to compare to.  So this is what I would do.  Pull the trailer onto a "known" level surface.  Now raise or lower the jack until the boat looks...right.  See where the existing stringers lie in regards to level.  If they are close, run with a control height based off the stringers.  If they are way out of whack, may think about bringing the boat up or down until they get close, see how she looks from the outside, attitude wise.

Regardless, at some point in time, you're just gonna have to bite the bullet and say...X marks the spot!  Keep in mind, a lot of smaller fishboats that offered both I/O and O/B configurations, the stringer grid was the same, the I/O just had engine beds glassed to the inboard stringers...

[Tx49]

Think you're just pretty much gonna have to go with your gut on this one.  There really isn't a lot out there to compare to.  So this is what I would do.  Pull the trailer onto a "known" level surface.  Now raise or lower the jack until the boat looks...right.  See where the existing stringers lie in regards to level.  If they are close, run with a control height based off the stringers.  If they are way out of whack, may think about bringing the boat up or down until they get close, see how she looks from the outside, attitude wise.

Regardless, at some point in time, you're just gonna have to bite the bullet and say...X marks the spot!  Keep in mind, a lot of smaller fishboats that offered both I/O and O/B configurations, the stringer grid was the same, the I/O just had engine beds glassed to the inboard stringers...

Believe it or not, that answer actually helps me out a ton. between that and Chris's, I know exactly what to do now. thanks. i will try to permanently bunk it today and start on the stringer removal tomorrow.

[Tx49]

No problem Johnny!

...

There is a picture in the gallery of a West Coast style house top on an Explorer and boy did it turn out pretty (serious workboat look), I wish I could remember who did it.  It wouldn’t look like a Bertram, but it would look good!  Hopefully one of the more senior Brethren will remember, he was/is a west coast member.

Anybody know this boat. I have been searching all kinds of terms and kind find it.

[Capt. Bob]

No problem Johnny!

...

There is a picture in the gallery of a West Coast style house top on an Explorer and boy did it turn out pretty (serious workboat look), I wish I could remember who did it.  It wouldn’t look like a Bertram, but it would look good!  Hopefully one of the more senior Brethren will remember, he was/is a west coast member.

Anybody know this boat. I have been searching all kinds of terms and kind find it.

If this is what you are referring to then,

Here's the Gallery link.
http://www.classicaquasport.com/gallery ... se&cat=500

Here's the thread.
viewtopic.php?p=88810#p88810

Search term: pilot house.

If not, there are others.
Good luck.

[fishinonthebrain]

Re: 197? 240 Sea Hunter Build

Postby fishinonthebrain » Mon Jun 17, 2013 8:53 pm
Something you might consider since you are at this point is making use of all that space from the stringers outward. I noticed on the higher end new boats they would make fish boxes or storage lockers out of those areas. Very hand place for storage. just line the areas with 2" foam insulation board and glass over them, add a drain in the rear of compartment, and make a access door in your deck. It's just a though I am trying to incorporate something like this in my build.

I had been wondering about the feasibility of that.  Thanks for confirming that I can use that space like that.

You can check out classic mako's website to get some good ideas for your rebuild. there are some really talented guys over there doing their own mods to their boats and have some good ideas.

"MOJO" '78 Mako 25 - 6/10, William Dean Sr. Rebuild - 6/14/2013, and The Mako 261 Saga - updated 5/21/13 have been pretty good at giving step by step pictures. I wish I had added a euro transom to my boat but not now to far a long.

Looking at all these rebuild has added a lot of time to my rebuild due to changing my mind and giving me a lot of ideas so be warned.

[dburr]

No problem Johnny!

...

There is a picture in the gallery of a West Coast style house top on an Explorer and boy did it turn out pretty (serious workboat look), I wish I could remember who did it.  It wouldn’t look like a Bertram, but it would look good!  Hopefully one of the more senior Brethren will remember, he was/is a west coast member.

Anybody know this boat. I have been searching all kinds of terms and kind find it.

If this is what you are referring to then,

Here's the Gallery link.
http://www.classicaquasport.com/gallery ... se&cat=500

Here's the thread.
viewtopic.php?p=88810#p88810

Search term: pilot house.

If not, there are others.
Good luck.

CB the one I was thinking of I saw in a post in the last 6 months (I think ).  It had a west cost style forward raked windshield.  From the gist of the thread the owner had been an active poster but went dormant for a while...  I am terrible with names.. :cry:

[Capt. Bob]

CB the one I was thinking of I saw in a post in the last 6 months (I think ).  It had a west cost style forward raked windshield.

Explorer or Osprey?

Here's Fishhead's Osprey conversion.
http://www.classicaquasport.com/gallery ... &protype=1

[dburr]

CB the one I was thinking of I saw in a post in the last 6 months (I think ).  It had a west cost style forward raked windshield.

Explorer or Osprey?

Here's Fishhead's Osprey conversion.
http://www.classicaquasport.com/gallery ... &protype=1

Yessir that's it!!!!  

Can't past the picture on my iPad...

Johnny here is another option for the house/cabin...
 
http://www.classicaquasport.com/gallery ... er_275.jpg

[Tx49]

That's pretty cool, but won't work for my plan. I am constantly looking at different sites like mako, seacraft, hull truth, bateau, iboats, etc. for ideas. you gotta remember i've been thinking about this for a dozen years.     I have the basic layout figured out, my main issue on the grand design, is deciding the cabin and vee berth floor heights, which won't come for a while when i can mock it up. the details, well thats why I lurk around here so much is to fill my brain with all you guys boat godness.   LOL

[gran398]

Little boat...Big house.

If you're cold on this boat....BYO propane