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Project Radiant (Lake and Bay hull)

Old 10-02-2018, 04:39 AM
  #121  
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Thanks for the update....looking forward to the results
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Old 10-02-2018, 05:08 AM
  #122  
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Originally Posted by 305seahunter View Post
Just an update to this thread. I ended up selling the old Black Max. It was a great motor and would push the boat to 70+ with a good prop. But it burned a lot of fuel and oil. I am searching for a 3.0 optimax 225+ hp to throw on.

I have some work I want to finish up on the boat before then. I want to glass the transom to the cap and install some bigger stringer knees. I realized that the splashwell was 1/2" glass and the top motor mounts tied the transom to the cap which really stiffened it up. Without a splashwell I am not tying it all in together. So I want to redo the transom design back there and also make a nice bilge hatch with gutters. I eventually have plans for a 300r or whatever mercury comes out with later on that V8 platform so it has to be strong. And now with no motor, it is the perfect time to do this work.

Man, I am SO happy to read this. I watched your build thread and all the work you put into that hull. Then, at the end, to put that old clunky antiquated black max was like getting all dolled up to take your wife out for a hot date and ending up at McDonalds for Big Macs. I didn't want to say anything during or after the build, but since you did: way to go! She deserves some new fast, updated technology.

Without reviewing your build, do you NOT have a bilge hatch access currently? When I redid my transom rear casting deck area on the Willy Roberts/ Archibald Shipoke, I negated my splashwell and added a bilge inspection hatch. Way to go on the re-addressing this LNB to make it the meanest sled possible. You will not be disappointed with your decision. Keep this thread going.
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Old 10-02-2018, 07:04 AM
  #123  
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Originally Posted by sydngoose View Post
Man, I am SO happy to read this. I watched your build thread and all the work you put into that hull. Then, at the end, to put that old clunky antiquated black max was like getting all dolled up to take your wife out for a hot date and ending up at McDonalds for Big Macs. I didn't want to say anything during or after the build, but since you did: way to go! She deserves some new fast, updated technology.

Without reviewing your build, do you NOT have a bilge hatch access currently? When I redid my transom rear casting deck area on the Willy Roberts/ Archibald Shipoke, I negated my splashwell and added a bilge inspection hatch. Way to go on the re-addressing this LNB to make it the meanest sled possible. You will not be disappointed with your decision. Keep this thread going.
I agree with you. But I did love that old motor. 29 Years old and ran perfectly. An optimax or something even newer is better suited for the boat though. Hoping to be in the 80s with the next motor. At least a 225.

I had bilge access. I'll see if I find a picture. I had to make bilge hatch very last minute and glass in some hatch receivers. Didn't look all that pretty up close, but from about 10 ft away it looked good. I am glad I got rid of the splashwell, even if it is more work in the end.
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Old 10-02-2018, 10:53 PM
  #124  
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Go with a 250 minimum. I know of 1 or 2 L&Bs that barely break 80 with a 250 Pro XS. Sure, others are faster, but I know of two that can't.
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Old 10-03-2018, 05:42 AM
  #125  
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The 3.0 Optomax (495 lbs) vs with the new 225 four strokes by Merc (475) are close in weight. The latter is a SIX cylinder, not an in line 4. It will be quieter, more fuel efficient, no oil addition and lighter.

The down side is a long wait.

I bought a L and B that came with the small block 200 HPDI. It was okay. It blew up (Naw!). Found another large block 200 HPDI and it blew up (NAW!!).

Not wanting a 2 stroke after the two HPDIs, I got an in line 4 Yamaha 4 stroke 200mhp. It is quieter, so economical (yesterday I was taking it easy at 3800 rpm and 30 mph and getting 5 mpg). It performs just as well as the HPDIs. I did remove a lot of old crap in the bilge from previous owners (its a 1995), so it lost some weight. HPDIs were gas guzzlers compared. I have had no problems, knock on wood, with the Yamaha. Its a reatively noisy 4 stroke though. My 300 zuke is quieter.

If I had it to do all over today, I would go with the new Mercs. They are supposed to be quite quiet, etc.

Of course I dont need the speed here in NC. The chop is a daily thing and I dont want to go that fast anymore.

Ii will probably do a resto on the L and B when the two others I am doing are done (Aquasport 22 Flatback and Dolphin 16 BC). I really liked your rebuild. I may be in touch on how to get the bait well loose without ruining it.

Thanks for posting.
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Old 10-03-2018, 05:45 AM
  #126  
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Originally Posted by TurnMeLooseFLKeys View Post
Go with a 250 minimum. I know of 1 or 2 L&Bs that barely break 80 with a 250 Pro XS. Sure, others are faster, but I know of two that can't.
Okay that is some good info. Although my boat is pretty light. When I was down in the keys I talked to one guy with a L&B and he said mine is a lot lighter than his. We were rafted up and it was interesting to see how the boats reacted differently to passing boat wakes. I really want to get it weighed. And breaking into the 80s is the goal

I've only been able to find one other Radiant owner. All he did was replace the floor, left the foam and original everything. He also made sure the bottom was straight like I did. He was running 82 with a 225 Vmax.
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Old 10-03-2018, 05:58 AM
  #127  
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Originally Posted by Chris Elkins View Post
The 3.0 Optomax (495 lbs) vs with the new 225 four strokes by Merc (475) are close in weight. The latter is a SIX cylinder, not an in line 4. It will be quieter, more fuel efficient, no oil addition and lighter.

The down side is a long wait.

I bought a L and B that came with the small block 200 HPDI. It was okay. It blew up (Naw!). Found another large block 200 HPDI and it blew up (NAW!!).

Not wanting a 2 stroke after the two HPDIs, I got an in line 4 Yamaha 4 stroke 200mhp. It is quieter, so economical (yesterday I was taking it easy at 3800 rpm and 30 mph and getting 5 mpg). It performs just as well as the HPDIs. I did remove a lot of old crap in the bilge from previous owners (its a 1995), so it lost some weight. HPDIs were gas guzzlers compared. I have had no problems, knock on wood, with the Yamaha. Its a reatively noisy 4 stroke though. My 300 zuke is quieter.

If I had it to do all over today, I would go with the new Mercs. They are supposed to be quite quiet, etc.

Of course I dont need the speed here in NC. The chop is a daily thing and I dont want to go that fast anymore.

Ii will probably do a resto on the L and B when the two others I am doing are done (Aquasport 22 Flatback and Dolphin 16 BC). I really liked your rebuild. I may be in touch on how to get the bait well loose without ruining it.

Thanks for posting.
The 225 4-stroke from Merc is a very interesting motor. But I don't think it could compete with a 225 Opti. I am doing this more for speed and fuel efficiency. Weight isn't really a problem on these boats.

I've heard those 4 cylinders can get loud at the upper rpm range. Nothing can be as loud as my old 200 with drilled exhaust though.

I probably wouldn't be able to help you with the bait well problem. My boat is just a lake and bay hull. After that is has nothing in common with yours. The baitwells on mine are way different. Post a thread when you start the rebuild. Not many real lake and bay rebuilds on here
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Old 04-03-2019, 06:40 PM
  #128  
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Well, it is time to bring this thread back up to the top.

When I took out the splashwell it was too much for the transom to handle since it was no longer tied in to the cap. It ended up cracking the two small stringer knees. Not a big deal, time to install some larger ones and add a big one down the middle, then glass the cap to the transom for the entire width of the transom. My deadline this time around is Memorial Day Weekend which gives me about 7 weeks to finish this up and find a new motor. So far finding a motor (225 opti w/ 20" mid) is a lot harder than all this glass work.

The middle stringer I will probably make 2 layers thick because I am bringing it down to the pad of the boat. I want it to be strong.

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Old 06-01-2019, 08:29 PM
  #129  
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Sub'd
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Old 06-02-2019, 04:57 AM
  #130  
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I finished the boat just in time for Memorial Day. Iíll update pics this week of the work. Boat looks the same now. Wasnít able to find a motor (20Ē 225 opti) in time, so I found an old motor to run while I keep looking. Itís a 1992 Mercury 135. Cowlings look the same so the boat looks identical. If you see me, and followed the thread, come up and introduce yourself. Iím out of Miami and key largo mostly. Miami today
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Old 06-03-2019, 04:47 AM
  #131  
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looking forward to the updated photos
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Old 06-03-2019, 09:52 AM
  #132  
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Here it is with the rear part of the cap about to go on. At the transom area I bedded it down with thickened resin
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Cap was pretty hard to get back on but I eventually got it
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Started grinding in the areas that I would lay glass
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3 layers of glass. Then I put another 4 layers in the middle section of the transom only. This was because I needed to make everything level and it was just too thick to do with fairing compound
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First pass of fairing compound. Used my own mix with epoxy. Went on thick but it really didn't need much. Sanded mostly by hand. Did 3 passes of fairing compound with the last pass being totalboat totalfair. First time using it, I liked it a lot
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Primer revealed some low spots, I ended up sanding most off and going for another pass of the totalfair
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Glassing the cap
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I was applying the nonskid the night before I left to the keys. I usually like two thin coats, But timing forced me to do one coat kind of thick. It dried nice, but you can tell the areas that I repaired. I plan on sanding it down and redoing those areas. But it looks good from about 10ft away. You have to really look for it.
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Overall I'm happy. She does 60 mph with the 135 spinning a 25p Tempest. Still on the hunt for an opti. But at least it is on the water for the summer.

But if anyone has an optimax 225-250 laying around, I'll take it off your hands. It can be any length shaft as I have a 20" mid I can use.
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Old 06-03-2019, 10:27 AM
  #133  
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Project turned out great. Thanks for sharing
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Old 06-03-2019, 02:25 PM
  #134  
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Are you sure it's a 135 and not just badged as one?
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Old 06-03-2019, 02:38 PM
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Originally Posted by TurnMeLooseFLKeys View Post
Are you sure it's a 135 and not just badged as one?
Yup, these old V6 mercs are a little hobby of mine. I have a few in the garage. Serial number comes back as a 2.0 135. I think 63 is attainable if I run it very light. I hit 60 with 3/4 fuel
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Old 06-03-2019, 05:21 PM
  #136  
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Well...DAMN! lol
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Old 06-03-2019, 06:16 PM
  #137  
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Originally Posted by TurnMeLooseFLKeys View Post
Well...DAMN! lol
Lol, I do want to weigh it one of these days. I think it is a good bit than an actual Lake and Bay hull
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Old 06-07-2019, 04:55 AM
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Thatís gonna be a beautiful boat when your done
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