bertram31.com

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Very nice work

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Very nice work

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Very nice work, Bahia Mar is my favorite model. Beautiful.

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The chase for higher MPG is non stop with 454s. You are currently seeing 1.1 MPG with twins at 22 knots.. correct? That works out to 10 GPH on each engine. For 454s pushing a 31ft deep Vee, I think that is outstanding. 25% slip is also a decent number on that setup. Imho you may be close to the top ...

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What a beautiful boat. It looks like he raised the helm deck level, incorporating the engine boxes under the helm deck. That adds a lot of open, flat deck without having to navigate around boxes, also provides an elevated (better) view.

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I can’t get the image of the Euro-modern CC with a canoe on top out of my head. There should be some sort of posting rules concerning boat picture decency.

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Check out the Mercruiser cooler. One of those may work. My 454 had a combination oil/gear inline cooler. I switched to 2 separate coolers.1-1/4” hose for Cold water in, cold water out.. oil in/ oil out.. they all do the same thing, just a matter of where they mount

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Thanks Al, I didn’t realize the Roncos were thicker. Explains why they are a little higher. For a holding tank I think thicker sounds like a good thing.

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I appreciate the inputs guys, plenty of neat ideas..however the boat is in the water, should have stated that up front 🙈 I think he’s going to pull it, measure it and fabricate the cradle. If the supports are running longitudinal, and well fit to the hull, structural sweet spots shouldn’t matter. Th...

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That boat is exceptionally well done, looks like it was dropped off at Jarret Bay, Merrit, Spencer etc. beautiful custom work. The issue is the dollars vs the size. As pretty and well done as that boat is.. $365K has you pushing into the new 30+ft size range. Overpriced for the size boat it is. Jim ...

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Thanks Tony,, I think a poop tank should be seemless

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What’s the difference in an RV holding tank and a marine holding tank, other than 3X the price? Are the marine tanks thicker? Both are cross link polyethylene, both have the same fittings (outlets) So.. what says the Bertram group?
Thanks

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Hawse pipe retainers

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I found that one drawing as well, can’t read and of the dimensions

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Daytrip is a good option, I thought of him as I think he has a 28 Hull CAD drawing. I can’t currently contact him! My PW /email/user name is a mess on THT.. apparently you can’t change emails on that site and get it lined out lol.
Thanks guys

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VERY nice work.

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Hi Guys,

A friend of mine runs a B28 and needs some hull drawings. The marina wants him to have a cradle for yard storage. He operates a fab shop, so building the cradle is no issue.. but finding the drawings has proven difficult. Does anyone have the hull drawings for a 28?

Thanks in advance,
Scot

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Vic Roy would have loved to join in on this post! He had a pair in a B25 and apparently had a deep dislike for those green motors. When he talked about Volvo’s, his response was typically “parts were always falling off” lol.

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I’ve been away too long, Last time I was active on the site the hull vents were all the shizzle! So.. I spent countless hours fabricating some into the 25 inboard project, now they are NOT the thing to do.. 😂😂 Oh well, they are there now and they will have to stay as I’ve already “undone” way too ma...

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Hi Mikey,
I’m back too!... I think? Lol.

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As mentioned the heads off 12 valve Cummins are all the same except valves, rotators and springs. Find a truck head, use the CPL off your existing engine to get the necessary pieces from Cummins. Any decent head shop can run down the parts from your CPL and install them.

Good luck.

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3208 at 435hp has a rough reputation.. just too much power from that block.. they are said to be very reliable to 375hp, not so much beyond that rating. Disclaimer: this is hear-say and internet chatter, boatdiesel.com etc.

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Proud native Texan, great place. Won't go into all the attributes.. just say'in that coastal Texas is a good deal all the way around.
Keep it quiet, we are full up down here

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Your workmanship is outstanding Cam, congratulations on creating a beautiful boat. Looks like a factory new CC.. a high end one!

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Fantastic Cam,
She really came out beautiful.

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An old boat mechanic told me to install a 1/8” thick washer inside the coupling, between the shaft end and the transmission companion flange. The logic behind this is that the end of the shaft end flares slightly at the flange connection from the thrust loads. This slight (thousandths) flare is what...

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Late response, but if you haven’t painted the bilge yet.. PPG Americoat 385. 2 part marine/ industrial epoxy tank coating. Immersion rated.. easy to use and very tough. 2 gallon kit is around $100 bucks. Very good stuff, comes in several colors. Roll on or brush on, cut with Xylene if you want to th...

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Thanks Bruce, i’ll Give those a try. I “think” the TDL 711 may be a form of of LORAN, the RNAV appears to be aircraft based on vectoring to within 1/4 mile that gets you to visual range of the platforms.

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If I recall, 20, 25 & 31 are all Hunt hulls, and all 3 have a very similar look. 28, 33, 35 etc I believe are the Napier hulls.
Do you have a picture and dimensions of the hatch you need?

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Several years ago a chopper pilot gave me some GoM platform numbers. I recently left them with a friend to convert, no luck. He is a pilot an PC geek and couldn't find a way to convert these numbers. Hopefully someone has a formula or knows of software that can do this. The numbers are based in; "TD...

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Don't know if it's a match.. But I have a 69' 25 front hatch that I'm not going to use. If they are the same let me know, it's in good condition.

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be one with the boat

Outstanding

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53 series is the toughest to find parts for. 71 & 92 series still have good support, even from Detroit. Try Stewart & Stevenson, Houston, TX. Ask if they still have the used parts department. They did have a lot of used DD 2 stroke parts.
Good luck, you should be able to run the pieces.

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you need to pay for a spinal adjustment and a new set of teeth.

Yep... that's always been my experience with light boats.

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I wonder if they would add the 3,000# back to the boat if requested? 7,800# is WAY too light for a 31' boat = beat you to death in a chop or tight seas. I guess it's really fast in the river or ship channel?

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Cockpit deck, deck drains (scuppers) are an issue with the 25s. More than one boat reported sinking at the dock on the old 25 board. When I picked mine up, the PO had 2 plugs hanging on the stern cleats and concrete sacks in the bow. I read into that "raise the cockpit, get some weight forward". The...

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Congratulations buddy. All this started for you and I on the 25 Bertram board, now you are in the water.. I'm still sanding! It looks great. ENJOY

BTW Don't feel bad, 90% of 25 Berts are too light LOL.. there is a bunch of hull volume in these boats.

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1/2" belt will get into tight spots, but too narrow IMHO. Harbor Freight sells one-time use tools, which I buy on occasion. Go with the 1-1/8" 9031 Makita, it will turn into your "go to" tool. You will not regret the money spent. BTW...don't let it sit in one spot, keep it moving!! Yes, mine is a st...

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As you are into some heavy glass work, might I suggest a tool. I spent years in the "fiberglass fog" of grinding. The Makita 9031 (1-1/8" belt sander) is a fantastic replacement for that mini-grinder with flapper wheels. The front handle easily comes off and it goes into tight spots the mini-grinder...

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I agree with Mike.. "cured is cured". If it sets to non-tacky you are good. In the future, keep a trash bag or some plastic wrap around when you are glassing on cloudy days. If it looks like rain, lay the plastic over the uncured epoxy. Once cured, the plastic will peel right off.

Good luck.

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Daniel,
You can install the P7100 pump in those 24Vs. It's a thing among the rolling coal crowd

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I had coil problems a few years back. Standard coils tend to "soak" over long output cycles. Mine would run fine, then not idle or restart easily.. let it cool down a while and all was well. I went to a high performance coil (MSD Baster) and the problems went away. On the ballast, do you have a ball...

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Looking great Matt! Nice work, pretty boat. I REALLY like the braided SS gear cooler hoses... who made them up for you?

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PPG Americoat 385

2 part epoxy, 2 gallon kit is around $100-$150 bucks. This is an industrial grade paint that is immersion rated. Only comes in white. Works on polyester or epoxy. Data sheets online. BTW>> I like it A LOT lol.

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It appears that you reinforced the protruded chine from the inside? If so, good thinking. The chine on the 25's is not adequate. They commonly crack longitudinally (as mine did). I had to remove the gelcoat and add (4) layers of 1708 to the exterior to rebuild the chines on mine. The hull side, some...

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Had the same issue, changed out the coil to a high performance coil.. no more issue. My original coil was a cheap auto store coil. The coil is soaking.

Good luck

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Check your fuel filters. If they are staying clean, why pull them? They may have been made from vinylester, in which case they are fine.

BTW, how does that single 460 inboard push the boat?
Pictures please

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First.. what Bruce said. In my opinion, yes Twin Disc 502 is worth rebuilding. Personally I feel like TD has always been the best gears on the market, very robust, commercial grade gears. Their sizes range options are not so good for smaller engines like ours, they appear to have pulled back from th...

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6-8 layers of 1708. That will be 1/4 to 3/8" thick. The box stringers are 1/4" thick.

BTW use epoxy. That is a structural bond.

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Center of the mid-ship cheat to the aft end of the stern cap is 145", measure along the gunwale.

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