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Thread: tell me i am doing the right thing

Started 3 weeks, 2 days ago by coolair
OK, well yesterday i started pulling up my deck, got all the vinyl up and the middle section out, i looked in the tank through the sender hole with a flash light and mirror and saw NO damage, but as far as i know it has only had one tank of ethanol in it. And for being 40 years old, the deck was pretty solid except in a few places, so was the deck supports, i just wonder if it has ever been...
Site: bertram31.com :: Index  bertram31.com :: Index - site profile
Forum: General Discussion  General Discussion - forum profile
Total authors: 6 authors
Total thread posts: 17 posts
Thread activity: no new posts during last week
Domain info for: bertram31.com

Other posts in this thread:

walterk replied 3 weeks, 2 days ago
So far, all sounds right. None of the tanks have lifting eyes.

coolair replied 3 weeks, 2 days ago
10-4 i thought i read that some did. My other question is... is 1/4" aluminum required on tanks, or can you go with 3/16". i mean 1/4" is pretty darn thick also any body know a good welder in the texas area. so far my best price on a 231gal tank is from RDS in florida, and the guy i know here wants 15.00 bucks a gallon Last edited by coolair on Sun Nov 08, 2009 10:33 am; ...

Vicroy replied 3 weeks, 2 days ago
My 72 FBC has a lifting eye on the rear of the tank, on the aft side, not on the top and its glass. Don't think I've ever looked at the front of the tank for one. The plywood is stock. Bertram started using the 222 gallon tank in 1972. Look on the top of the tank, aft end, for a slip of paper glassed into the top of the tank with the manufacturing data typed on it. Mine was real hard to ...

CaptPatrick replied 3 weeks, 2 days ago
Bertram actually made three fuel tank designs for the B31. When they were playing with a larger tank in '71, there were a few, maybe not not more than a couple, that were fitted with a 200 gallon tank that had a recessed pocket for the fill pipe. The 200 gallon was a calculated volume, but because of the recessed pocket there was no way to actually fill the tank to full capacity...

coolair replied 3 weeks, 2 days ago
Ya i have the 170 gal tank. cant wait to try and bust that foam loose!! i am so excited about that. Capt. when are you going to publish a service manual/DYI guide to the 31?? i know i would buy it!! That way when ever guys like me start a project we can keep the book right by our sides, maybe a 31 bertram guide for dummies haha

CaptPatrick replied 3 weeks, 2 days ago
Quote: Capt. when are you going to publish a service manual/DYI guide to the 31? Well, I've given that question a lot of thought over the past 10 years, and the day may come.... Stranger things have happened.

coolair replied 3 weeks, 1 day ago
I hope you make it quick, before I go and screw something up! haha

sim replied 3 weeks ago
I went 3/16" aluminum...they thought it was overkill. I also gave a coat of Coal Tar Epoxy, Nasty Stuff. My buddies tank was made from 12Ga Alum, about 150gal and was Epoxy coated. That is what was recommended to me, but I opted for 3/16" and hoped to get a few more years out of it.

coolair replied 3 weeks ago
capt pat, on a new deck is it better to laminate two pieces of core material like two pieces of 3/8 or just use a solid piece of 3/4" or whatever thickness i go with. or just say solid glass sim, i think 3/16" on a 150gal tank is ok, but i have been told on a bigger tank, like 250gals you need thicker. I dont know

CaptPatrick replied 3 weeks ago
If I were fabricate a deck, it'd be with 3/4 Coosa board. I'd never use plywood. Too heavy, too much chance of water intrusion...

 

Top contributing authors

Name
Posts
coolair
6
user's latest post:
tell me i am doing the right thing
Published (2009-11-11 10:01:00)
10-4, I am looking into finding some here locally I am pretty sure composites one has it, i just didn't know if its better to laminate 2 sheets to make the 3/4" or just one solid sheet.
CaptPatrick
5
user's latest post:
tell me i am doing the right thing
Published (2009-11-11 21:59:00)
Bertram actually built all of the B31s from start to finish, nothing farmed out. Norberto Ferretti was the first to move Bertram from a vertical company to a horizontal one. Now all components, other than the main hull parts are farmed out to speciality houses. Glasstech was an out growth business that started after the B31 was finally taken off line. Most of the original Cuban workers who built the B31s went to work for Glasstech. Bertram...
Vicroy
2
user's latest post:
tell me i am doing the right thing
Published (2009-11-11 21:04:00)
Tony - on my 72 FBC the tank tag says 230 gallons along with the test pressure, etc. I was always under the impression that the "usuable" was 222....but on a two day trip offshore I came in on diesel fumes and put 226 in the tank, and both engines and the genset were still running. I'm not sure that Bertram actually built the tanks, seems someone told me they farmed them out, like they did with a lot of parts to Glass...
Tony Meola
2
user's latest post:
tell me i am doing the right thing
Published (2009-11-12 21:25:00)
It is just really strange that mine said 220 gallons and it did also show the pressure test amount. The tag was not glassed in and after beign exposed to the weather after the repower it has worn off. Unfortunatelly when they launched her after the repower I was not there. They put about 200 gallons in her but actually did not top her all the way before the sea trial. They said they figured about 200 gallons seamed right. So I am not sure if...
walterk
1
user's latest post:
tell me i am doing the right thing
Published (2009-11-08 09:35:00)
So far, all sounds right. None of the tanks have lifting eyes.
sim
1
user's latest post:
tell me i am doing the right thing
Published (2009-11-10 08:50:00)
I went 3/16" aluminum...they thought it was overkill. I also gave a coat of Coal Tar Epoxy, Nasty Stuff. My buddies tank was made from 12Ga Alum, about 150gal and was Epoxy coated. That is what was recommended to me, but I opted for 3/16" and hoped to get a few more years out of it.

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