Notices

1961 Bertram 25 Moppie Restoration

Old 05-13-2014, 04:33 AM
  #1  
Member
Thread Starter
 
Join Date: May 2014
Posts: 34
Default 1961 Bertram 25 Moppie Restoration

Hello fellow boaters:

I have found my newest ebay-borne project, which has already been partially done by the previous owner. It is a 1961 Bertram, serial number 25110. From what information I have found I believe this to be a very early B25 - as I read somewhere they started numbering at 101. It's a beautiful shape, in very good condition - and has never been bottom painted.

I am going to try to document my entire project on here to help anybody that embarks on one of these adventures in the future, as well as a sounding board for advice. My fiberglass experience is limited to repairs on my prindle catamaran and my b-class hydroplane. My previous boat restorations include a 1956 Feathercraft aluminum boat and a 1970 Starcraft Chieftain aluminum cuddy cabin (very little fiberglass there lol). My family is expanding, so I need a bigger boat! That being said I'm also under a deadline - to have the boat done before my new son gets here - by the end of September.

So to begin I ordered 25 yards of 1.5oz fiberglass mat, 8 yards of fiberglass cloth, 5 gallons of polyester resin, 5 gallons of polyester gelcoat, quart of styrene and wax - as well as a gel coat gun, some black pigment and (5) 3/4" coosa board sheets for new floors, hatches, and transom bracing.

Now about the boat - it has already been converted to a single outdrive. It has had the cabin cut, and raised up approximately 16" to allow more headspace in the cabin - which I didn't like at first but now think I like. It's basically just a shell, but a very good shell. It came with an aluminum 93 gallon fuel tank. It also came with a beautiful top, but had the two front legs cut off. It came with a teak door for the cabin, which will now be too short since the cabin was raised. It has a teak swim platform which I may or may not use, and it has a nice teak bow pulpit.

So here are some "before" pics.
Attached Images      

Last edited by xshydro; 05-13-2014 at 04:36 AM. Reason: Typo :-)
xshydro is offline  
Old 05-13-2014, 04:42 AM
  #2  
Senior Member
 
Join Date: Feb 2008
Location: Virginia
Posts: 7,134
Default

Great hull! Look forward to following your progress
mobjack22 is offline  
Old 05-13-2014, 05:08 AM
  #3  
Senior MemberCaptains Club Member
 
Join Date: Nov 2006
Location: boynton beach fl
Posts: 4,657
Default

That boat could REALLY use twins.
1NO REGRETS is offline  
Old 05-13-2014, 05:27 AM
  #4  
Senior Member
 
Join Date: Aug 2008
Location: Fla / Curacao / WA
Posts: 4,726
Default

I love that the p.o. installed the tunes already.That is a glass half full guy right there!
Cool project btw
v12mac is offline  
Old 05-13-2014, 05:49 AM
  #5  
Senior Member
 
Join Date: Aug 2012
Location: Palm Bay, FL
Posts: 1,175
Default

I'm glad you bought this! I was watching it on eBay the entire time. I wanted to bid but I knew it would have to sit for a while. Looking forward to the progress!
Bubba60tackle is offline  
Old 05-13-2014, 07:28 AM
  #6  
Senior MemberCaptains Club Member
 
Join Date: May 2005
Location: Seattle, WA
Posts: 7,823
Default

That's a 25' Bahia Mar, not a Moppie.

The original fiberglass tanks only totalled 80 gallons so if someone was able to fit a 93 gallons aluminum tank in there, that's a huge asset.

The hull performs superbly with 250 HP and should be good for about 45 MPH.
Tom W Clark is offline  
Old 05-13-2014, 07:33 AM
  #7  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2011
Location: ocean springs, ms
Posts: 699
Default

cool boat. what exactly are your plans for her?
oicu812 is offline  
Old 05-13-2014, 08:04 AM
  #8  
Admirals Club Admiral's Club Member
 
Join Date: Jul 2010
Location: NJ
Posts: 2,226
Default

Saw it on eBay as well... Subscribed.
nadornati is offline  
Old 05-13-2014, 08:41 AM
  #9  
Senior Member
 
Join Date: Sep 2004
Location: freeport, ny
Posts: 246
Default

They did not offer a Bahia Mar version in 1961-----That was the conversion started by previous owner.
craig mac is offline  
Old 05-13-2014, 08:48 AM
  #10  
Senior Member
 
Join Date: Sep 2004
Location: freeport, ny
Posts: 246
Default

One of the members on the Bertram website has posted some pictures of his 20 foot Bahia Mar restoration---its coming out very nice....
craig mac is offline  
Old 05-13-2014, 08:53 AM
  #11  
Senior Member
 
Join Date: Jun 2009
Location: Ojai, Ca
Posts: 3,454
Default

Originally Posted by 1NO REGRETS View Post
That boat could REALLY use twins.
Twin inboards
805gregg is offline  
Old 05-13-2014, 11:53 AM
  #12  
Senior Member
 
Join Date: May 2012
Location: Delray Beach FL
Posts: 1,899
Default

Very nice, post more pictures
Penta Diesel is offline  
Old 05-13-2014, 04:58 PM
  #13  
Member
Thread Starter
 
Join Date: May 2014
Posts: 34
Default

It is in fact a Moppie - but the previous owner had cut out the cabin top where the windshield was and lifted it up 16". I took off the aluminum top today, and cut out the fiberglass where you see they lifted the original cabin. I do like the idea of the extra headspace, however I think 16" is a bit too much. And the fiberglass job that had begun fell short of my expectations.

Also - to fit the 93 gallon fuel tank (saddle tanks) they cut out the stringer in the bottom of the boat. I would really like to use the bigger tank, but I need to do some serious reinforcement. I'll post pictures of what they did (poor bertram) and a drawing of my plan to be able to use the 93 gallon tank and how to reinforce the hull.

I need an opinion of what to use for my floors. Should I glass in closed cell foam, coosa board, or some other product? I considered plywood for the value, but figure I could bring a few extra people with the weight savings. Also would you use all fiberglass cloth, CSM or what? I'm interested in suggestions on products.

Also to rebuild the "windshield" which will hold up the cut-off cabin, is there a material that I could build the shape with then laminate inside fiberglass? A product that will be strong when laminated - but be able to bend a bit...

Finally, the transom has been thickened and the outdrive holes filled, however there was no additional support added to the hull. I figure I NEED do this as well - to the thick stringers that used to be in front of the inboards to and up the transom. Would this be a good use for the coosa board or again is there another superior product?

Thank you for the comments and suggestions - These were supposedly pictures from 2007 of the same boat. I don't know what kind of abuse it faced in 7 years to degrade to what I have - but perhaps it was just a shotty restoration (I think that was when they cut out the stringers to fit the larger fuel tank).
Attached Images     
xshydro is offline  
Old 05-13-2014, 05:43 PM
  #14  
Admirals Club Admiral's Club Member
 
Join Date: Jul 2010
Location: NJ
Posts: 2,226
Default

A few of those pics were on eBay correct? I remember glancing at the ad, was hard to tell which was the before and after. Look forward to seeing rebuild. What are your plans with the hull?
nadornati is offline  
Old 05-14-2014, 04:23 AM
  #15  
Member
Thread Starter
 
Join Date: May 2014
Posts: 34
Default

Yes, those were on ebay. The before is the nice looking black boat. The after was the one that had all the black sanded off of it. There was also another boat the guy had, a friend of mine bought it but will be doing his restoration at a later date.

Today's task is sanding off all of the superficial glass from where the bahai mar conversion began and grinding out the PVC pipe channels adjacent to where the main stringer was cut out of the boat in order to reinforce with coosa board. Then some templates out of cardboard to reinforce the sides and especially the transom

My current plan is to do the Bahia Mar conversion, to give extra cabin space. I wouldn't have cut the moppie top out personally, but since it is cut I may as well at this point. Other than that I am going to do a flat floor all the way to the cabin, with hatches wherever possible. Thinking of also doing a livewell in the back center of the boat, right in front of the single outboard.

I'll bring the camera today and take pictures of everything. I also have a really cool timelapse camera I'm going to hang up in the rafters so I can get a video at the end.
xshydro is offline  
Old 05-14-2014, 03:56 PM
  #16  
Member
Thread Starter
 
Join Date: May 2014
Posts: 34
Default

So today was informative and productive. Finalized my order on resins, coosa board and a whole roll of fiberglass cloth. Also got 5gals of gelcoat and one of those ES100 spray guns, and a sleeve of tubes.

Cut off the remainder of the previous owners "windshield" with my 3" grinding wheel. To my astonishment I could have probably removed it all with a puddy knife and hammer. Then used 4" grinding wheel, a DA and the puddy knife to get down below the gelcoat to virgin glass. Whoever his fiberglass guy was tried to go to crazed gelcoat, and didn't even bother peeling off the decals from the 2007 restoration that said "Bertram 25".

Anyhow they're all gone now, and everything is sanded to the point where I have virgin glass and can put in my coosa board. I also came up with a plan for where the gas tank is going to go - I'm going to make a thick rib and cap it between the two pre-existing ribs, and then put another rib about 1' out on either side. It will be more clear when I post pictures of how it is done - but that will allow me to retain the 93 gallon gas tank (and save me a bit of money). So far I'm into the boat about $1500, about $800 in coosa board, $200 in a whole roll of cloth, and $200 in 5 gals of resin and 5gals of gelcoat. And of course about $30 in sandpaper.

Tomorrow I'm not going to touch it, I have a new belt sander coming in Friday and all my fiberglass materials and coosa board will be delivered Monday. I'll pick up some foam between now and Monday and also make some fiberglass templates for supports etc.

Some more progress pictures... Probably the last until Monday. Stay Thirsty friends!
Attached Images           
xshydro is offline  
Old 05-15-2014, 05:24 AM
  #17  
Senior Member
 
Join Date: Aug 2008
Location: Fla / Curacao / WA
Posts: 4,726
Default

I'd go with a new bracket.
v12mac is offline  
Old 05-18-2014, 05:50 AM
  #18  
Member
Thread Starter
 
Join Date: May 2014
Posts: 34
Default

I'm most likely going with a single yamaha 300. That should plenty adequate, and I would assume just as (or more) efficient than twin 200's etc. Certainly easier on the budget...
xshydro is offline  
Old 05-20-2014, 05:00 PM
  #19  
Member
Thread Starter
 
Join Date: May 2014
Posts: 34
Default

Since Friday I finished lots more grinding and made templates out of cardboard. Got the Coosa board in at the end of the day yesterday, along with polyester resin and a 100 yard roll of heavy duty woven roving. I think it may be a bit too thick for anything not structural. I'll buy some thinner stuff at a local paint/body shop for the tops of the deck. The coosa board is a nice product, really light weight, very strong, and easy to cut.

I moved the step-down into the cabin forward about 2'. This will allow me to utilize one single 4x8 panel to cover up the gas tank, and my fresh water tank. On the sides of the gas tank I can make some 6' long x 8" wide fish boxes - don't know if that would be usefull or not.

In addition to all the coosa that you see in the pictures that will be glassed in - 2 pieces on the outside of the gas tank will be glassed in. You will notice where there are 3 pieces cut out in the center with the tall support was cut out - I'll glass those in and cap them - and hope that is adequate enough support. Any comments on that? I also braced the transom with coosa that runs along and butts up to the thicker stringers that were forward of the previous inboard motors. I think this should be adequate bracing for the transom in addition to the large aluminum piece of angle.

Also started framing out a support to put the top of the cabin back onto. I will cut the "windshield" pieces tomorrow, and make the curvature that will be glassed in out of foam. For this I used 1/2" coosa vs everything else being the 3/4".

On a sad note, my Kellogg 452 10hp an air compressor stuck a piston and cracked a jug today. I hope to have a new compressor pump delivered by Friday - but it won't be an original Kellogg - just one of the knock off Mexican ones. Is nothing made in the USA anymore?

On a brighter note, I found a great deal on a 2014 Yamaha 300HP 4 stroke outboard. I'll be picking it up this weekend.

As always, appreciate any comments..
Attached Images         
xshydro is offline  
Old 05-30-2014, 12:21 AM
  #20  
Member
Thread Starter
 
Join Date: May 2014
Posts: 34
Default

Have made some great progress - all of the bracing has been glassed in. Using 1/2" styrofoam sheet made the curvature of my "cabin" corners and then built the shape up some with fumed silica. Then glassed in the coosa board and foam- should be nice and strong in the morning. Also picked up a new 300hp Yamaha - perhaps the cart ahead of the horse but it acts as incentive. Also got lucky and found a 160gal fuel tank that fits in the belly of the boat perfectly which was evidently designed for a Key West 26'. The boat came with a 93 gallon tank, but I wanted the option to have a little more... If anybody in East Central FL needs a 93 gallon tank I now have one for sale... Cheap!

Tomorrow will finish glassing in the outside, and begin glassing in the inside of the cabin. Have been waiting since the Tuesday before last for a new air compressor pump - so the project has beeen slow going - but the new pump is supposed to arrive tomorrow so it should speed everything up.
Attached Images          
xshydro is offline  

Thread Tools
Search this Thread