bertram31.com

JH_B28

Thanks frank I will def be propping on the light side to make rpms plus. I talked to jimmy G and he told me his prop size and pitch so I have a starting point i know he has 380’s but i think the power curve is close. Between him and Bob H I have a starting point also combed through the internet and...

JH_B28

Tooeez wrote: ↑Nov 30th, '20, 17:44 Thanks. Do you have any problems with exhaust pressure backing up the drain pipes?

Not that I have noticed. We put a check valve on the main drain pipe that goes into the cabin (for the galley & head) which would be my only concern, so fumes don't reach the cabin.

Regards,

JH_B28

Jorge, can you provide some details on your gutter drain system? The deck hatches draining into the bilge have annoyed me the entire time I've owned the boat. Sorry for the delay Toeez. I made my hatch gutters using capt. Pat's tips (Mcmaster frp). Basically I used 1/2" pvc tubing to connect the gu...

JH_B28

In my 28, I glassed the original scuppers in the transom and made new slightly larger scuppers through the sides. I think this way water "should" still keep draining while backing down on a fish. I also made the gutter drain system for all the floor hatches so they drain directly overboard through t...

JH_B28

Hey Jorge, By liner you mean the underbed structure? That ends up at the engine bulkhead? If yes, that is gellcoated; did you get rid of the g coat first? Also, the boats that you may have seen, still carry some bulkhead at their extremities, plus, some others carry vertical supports. Oh, well I'll...

JH_B28

Hi Yannis, I don't believe those bulkheads are structural. I've seen some boats that have removed them to have a more open look. It does give a little support to the front deck that carries the weight of the bridge through the windshield but it will just flex a little if you remove it. No harm done....

JH_B28

Jorge, hi, There is no way the cabin bilge can stay dry by just sealing the keel opening alone. Water finds its way over the stringers, flows forward, and finds its way lower into the cabin bilge through the stringer openings. Also, the water that drips down from the motor hatches’ rim is mostly go...

JH_B28

On my 28 I sealed the limber holes in the areas where the engine beds are and also where the stringer meets the main bulkhead. This seals off and makes a compartment below the engines in case of oil leaks of some sort. In the future I plan on putting garboard drain plugs where I sealed the limber ho...

JH_B28

Ours had the 370's, cruise at 2400 was in the 25-26 kt range, WOT was 34kts. On flat days we would do 2600 touching 30kts. We never precisely measured fuel economy but with rough calculations we were doing 15-16gph at cruise. We ran Michigan DJX 21x24 med cup 3 blades. They are great engines and its...

JH_B28

Hey JH are your ripples in the cockpit deck area like from the engine box/deck back? Sounds like Prestons is more forward. Thank you all much appreciate the input. Hi, Mine are just as Preston described, more forward from the vberth to the engine box area. They are more noticeable in the mid-ship a...

JH_B28

Mine is a 73' and you can see the ripples in a straight line where the interior line meets the hull. From factory the liner was glued with some sort of hard resin putty which came loose in many places so i glassed in the whole liner joint to the hull. Maybe this will help with this distortion of the...

JH_B28

In PR we've been in full lockdown since mid March. No recreational boating, only commercial fisherman are allowed to go out. Everything is closed, including marinas. You can only have 30min to go check on your boat (1person) and have to leave. I think i'm going crazy already LOL Micky is the only on...

JH_B28

Jeff, I have a 73 and mine were mounted on a 3/4" thick plastic spacer (starboard i think). Maybe to account for the slight curvature of the transom but not sure. As Preston says, I would check the backers to ensure that they are properly glassed or sealed (preferably with epoxy). Wood expands/contr...

JH_B28

Hi Ryan, In the 28's bertram put marine ply where the exhausts exit the transom to give it better support (transom glass is thin). I had to replace the rotted wood when I made my new exhaust exits. I don't have pics of the inside but maybe you can see the wood in the new exhaust cut out: https://lh3...

JH_B28

First one i've seen with a transom door. Nice work.

JH_B28

Hey, Jorge! Long time no see, what’s happening to your various improvements? I’m sure you got some pics to share! Cheers. Hi Yannis, I can't even remember what was my last progress post LOL, but not much has happened since then. I've been working much of the weekends and was transferred to a projec...

JH_B28

Just saw this Yannis. NICE!

Good way to use all that wasted space. I'll buy your idea for my 28

JH_B28

Yannis wrote:Still nothing!
Only a no entrance road sign!

Very strange.... I can see the picture in the preview. I posted the same way as in the other thread

Send me a PM with your email and I can send them to you.

JH_B28

My 2 cents, I like really dry bilges, mild/mold that tends to grow in the hidden areas of the deck underside, hoses,wiring tend to be unsightly and smelly,probably unhealthy and just dirty. Just this past week I installed a BILGE DRY SYSTEM out of Canada, 375$ Each copy,installed in my 42’ in 3 bil...

JH_B28

Jorge, Thank you for your time but I cannot see the pic. Can you please try something else ? I only see the word “image” !!! Let me try again: https://lh3.googleusercontent.com/wfwiyzheZFZtcq-6UjzcjoWXVl6_jxXSUqqB6O7UQPV5W1eb94n11tZgQrS41Ww2FptvzDHJc_uegjig3mcPf8BC04TYxVfUgV86VA8cdeVoPuFwgQ5E27PTDj...

JH_B28

Could you please put up a pic of your engine room, in another thread, so I can see the layout...we have same m.y. boats and almost identical engines...I would like to see how hi or low your engines sit and if you have risers...I fear that you may have to add some kind of rubber or metal flaps to yo...

JH_B28

Tony Meola wrote:Jorge

That exhaust set up is sweet. Great idea.

Thanks Tony!

JH_B28

Jorge, I like the exhaust outlets you made and I bet it will work just fine. I may do that when time allows. Bridge looks good too. No more screws. The cockpit side compartments look to be glassed in? If so I would like to learn more about what you used and how you did it. I just pulled mine out bu...

JH_B28

Jorge, Some serious work there man! Now I get it. When you guys talk about putting the drains through the exhaust, you DONT mean INSIDE the exhaust tubing, rather parallel and just using the final exhaust hole for discharge, right? And, you still owe those anchor pics !!! Yannis, In my case, i'm us...

JH_B28

I recall a post from many years ago about having the 5 hatch drains routed to the exhaust. I do not recall if it worked or not. My to do list is those darn hatches that just run into bilge. I have lots of fiberglass in my exhaust so I thought about running a drain into the exhaust that terminates a...

JH_B28

Lawrence, I had to repair the deck area where the windlass was installed because it was soft. I had a bow pulpit which covered most of this area but when it was removed, i found out that it had a bunch of old holes that weren't correctly sealed. So I did the following: 1) Cut the top skin and remove...

JH_B28

JH George, I solved the anchor/hull issue by putting a new hole 3-4 cm forward (and a bit lower), on the pulpit. This leaves a good two fingers clearance between anchor tip and hull. Hope this helps. http://i869.photobucket.com/albums/ab251/yet15/IMG_0090_zpssyinncg9.jpg http://i869.photobucket.com...

JH_B28

Excellent trip Nav! Enjoy It! It took me about 3 years to complete that whole route LOL As for diesel, you're going to need plenty of it. From what I can remember from my uncle's 46 (I was very young), she would cruise at 20-22kts with an estimated burn of 20-25gph per engine. That would be an avg o...

JH_B28

No cracks, no sign of stress. It would be nice to hear from others who have also done this, if there were any problems. Yannis, I did the same thing as you on my boat and don't think it would structurally compromise the hull in that area, at least in the B28. After I cut, I put a layer of fiberglas...

JH_B28

George, Do you go there in your B 28 ? Yannis, I wish LOL. As micky said, I started with "small repairs" and ended up with a complete rebuild of the boat. I'm already 4 years into it, doing everything by myself and with my old man. The times that I went to the BVI were on other friends boats or my ...

JH_B28

[/quote] Excellent post!... Exactly the sort of thing I was looking for!... Definitely need more recommendations!... As many as you can manage!... Questions: Fishing permit: I assume that's done when clearing in at BVI customs on Jost Van Dyke?!... Las Pelas: does it have another name?!... I'm unabl...

JH_B28

Nav, All the suggestions you posted are very good. Mostly every summer I make a trip to the bvi's and visit as many beaches as I can. I will post up the ones i remember: In culebra: 1) Culebrita - small island to the east of the main island, it has the best beach and you can anchor up close. 2) Daki...

JH_B28

Hi Bob,

Any feedback on you're homemade "propspeed"? Did it work out well after some time in the water?

We are hauling my friends B31 in a few weeks for new bottom paint and was thinking of trying this out instead of pulling the trigger on propspeed.

Regards!

George

JH_B28

"Is this a commercial product or is it a home-brewed solution?!..." And if the latter maybe a picture next to a ruler or some dimensions? Hi, I will measure them next time I can get to the boat. Although, you can fabricate them to the size and function that fits your needs. The length of the legs c...

JH_B28

Navatech wrote:

Is this a commercial product or is it a home-brewed solution?!...

Navatech,

We bought the aluminum stock and fabricated & assembled all the pieces at home.

JH_B28

Yannis wrote:You took the engines out?

Yes, we took everything out!

JH_B28

Nice!! good work

JH_B28

Hi Yannis, Say no more, you convinced me to leave the hatch on top of the door! You could be a good salesman LOL. As for the one-piece engine hatch, you have a good point regarding the access to the cabin when open. I don't have that problem since I usually work with everything from the cockpit. Als...

JH_B28

Yannis, That is a sweeeeet B28! I liked the idea of the individual engine boxes (like the B31) but ended up making a single piece hatch to access everything at the same time. My initial thoughts were to try to eliminate the hatch on top of the door but i would've had to do it just like a B31 and lat...

JH_B28

George, beware of two things: The tilting anchor roller is practical alright, maybe it's also cool to look at, but it is significantly less sturdy than a fixed one, and ,two, do not make the mistake I made, by screwing the inox roller support 2-3 cm more aft than appropriate. I did not like it to e...

JH_B28

Very helpful, George, thank you very much. Hey, how did your anchor thing come out? Your welcome. Still haven't finished it completely, but there is only fairing left to do. The other B28 that is besides me did the same thing and already bought the stainless steel anchor roller. Fit perfectly. He b...

JH_B28

Carl, thanks for the clarifications. George, I hear you, however I'm puzzled by two things: First, even if I take the frame out, wont I still have to somehow cut the frame open or disassemble it, to be able to remove the glass? Or is it that by just removing the frame in one piece (with at least th...

JH_B28

Yannis, When I took my frames out, I had to do what John said. You have to completely remove them in order to replace the glass. On the top, it is held by machine screws that screw into an aluminum flat backing plate inside of the fiberglass (you cannot see it). On the bottom, it is held by bolts th...

JH_B28

I don't consider myself an expert but I have a pretty good understanding of these motors. So, to start with, all of the 4LH "S" motors are rated to produce the exact same HP under the exact same conditions. I have always looked at the 4LHA motors as an upgrade over the older 4LH motors. Different a...

JH_B28

Hey George, thanks. You may be right. But like you're saying, let the pros give us the correct answer. Since your boat+engine configuration is so close, let's compare a few numbers. I cruise at 2700-2800 rpm doing 22-23 knots (not miles) and burn 2.6-2.7 liters per nautical mile. Are you any close ...

JH_B28

George, I also have a '73 B28, with Yanmars too. Your 4lh-ste's are 230hp, while my 4lha-stp's are 240-250hp. Why does Yanmar make two engines that are called differently with only 10hp (or 20) apart? Hi Yannis, I asked myself the same thing when I bought my boat. I think that there is a thread whe...

JH_B28

Fonsim, I also am from PR and have a B28. My Mase IS2500 gen was installed between the engines and it ran a 10,000 btu A/C and a small refrigerator. I believe its better for maintenance compared to either of the sides. A friend of mine has a northern light 5kw to port and is a pain for servicing. I ...

JH_B28

Kevin, Do you know if this "step" that shows in your pic ( the one that's under your couch and goes all the way forward - port and starboard) is structural, that is, can we cut it and get rid of it or we'll ...drown one day ? If I could cut it, it would have made my life SOOO much simpler, both dur...

JH_B28

David, I have a 10,000 btu on my B28 and it works pretty well with the temperatures we have in PR. I had to tint all the glass to keep the temps down during the day, but at night it can get quite chilly. I'm currently redoing the whole boat and will probably go with Kevin's idea for the location of ...

JH_B28

Yannis,

Thanks for the dimensions of the anchor roller! That should give me an idea of what i'm going to install.

I'll post some pics once i'm finished.

Regards,

-George

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