bertram31.com

jayjays1

I see. What thickness Coosa did you use?

jayjays1

Guy's while I have your attention. I will be putting the Cabrera FG cockpit floor back in her but will be replacing the subfloor supports with Coosa. What do guys think the minimum thickness of Coosa is that I can get away with assuming I will be trying not to laminate most of it?

JJ

jayjays1

"Please sir may I have another!"

jayjays1

So I did my B25 myself when I was 22 years younger. It was a slog then so I am leaving this one to a local crew -but keeping a close eye on them!!

jayjays1

Yup. Fun but... not really kinda thing!

jayjays1

Hey you are right. I will see what size they are as I will be putting in a 6 inch system. If they are only 5 inch can they still work for that?

jayjays1

HERE WE GO!!

https://imgur.com/V882DII
https://imgur.com/OsIjhrf

jayjays1

I am still working out how to post images so sorry for a little redundancy!
JJ

jayjays1

THE FIRST DAY!

https://imgur.com/a/zI72lfz

jayjays1

cool thanks much!

jayjays1

Thanks Carl will check it out!

jayjays1

And props?

jayjays1

Hey good that you are back into it. What gears you running and what ratio?
JJ

jayjays1

Yup been reading previous threads about that very issue last night. Seems the problem was improved by placing a trim tab over the rudders.

jayjays1

Thanks Carl, larger wheels are not my priority. I think I'd rather have the props farther back in order to minimise the shaft angle further to maybe even less than 11 degrees and still have room for a 21" or so prop. I don't mind repositioning the rudders as far back as possible as boat is a total r...

jayjays1

Hey Carl this is helpful. I read a post from a long time ago where there were problems if moving the rudders too far back? Or maybe it was that there was uneven rudder positioning. I am totally gutting the boat and will use oversized rudders. I would think that the further aft the struts (and rudder...

jayjays1

Hey Thanks for your suggestion but I am looking for the complete door window with the original frame. Someone replaced mine with a sliding door but it doesn't slide very well.

JJ

jayjays1

And without shaft tunnels

jayjays1

Thanks Bob you are the guru on this! What do you think the minimal shaft angle can be if you till want to swing a 22 or even 23" prop?
JJ

jayjays1

Thanks Yannis, I won't. I am sure someone has kept one after they'd remodelled their aft bulkheads. I am looking for an original spec one if I can find it.
JJ

jayjays1

Anyone...? Really need one.
JJ

jayjays1

Hello Gentleman, The guys started this week on the total gutting of the FB cruiser which will involve conversion of her to a sedan as I need to get under a bridge in my commute in Bermuda. I will be replacing the aft cabin bulkheads with coosa. The current central door is a non-original sliding one ...

jayjays1

Ok thanks!

jayjays1

Thanks Bruce. My main mission is to attain the highest possible cruise speed as I'll be using the boat to commute back and forth to work each day.

Thanks for the info!

JJ

jayjays1

Ok cool. I am running the 370's but haven't found the model numbers on my ZF's yet. I am running 21x23's. What sort of top end speed do you get and at what RPM at WOT?
JJ

jayjays1

Thanks what engines and gears you running?
JJ

jayjays1

Thanks Guys I do understand what rake and pitch are but I need to understand how each effects the bow attitude of the B31? It was often said on this board years ago, that increasing the pitch and having larger props (and hence a larger blade area) pushes the bow of the 31 down with this attitude mak...

jayjays1

Ok so I remember while back that overpowered B31's tend to push the nose down at speed this being accentuated by the 15 degree prop angle. I have heard that this is accentuated by the larger prop angle. I understand that reducing this to 10 degrees reduces the amount the bow is pushed down. This has...

jayjays1

Could they possibly even build them any stronger????

jayjays1

I saw this too. Quite the project! Were there any differences in the spec for these boats?

jayjays1

That is the one!!

jayjays1

Thanks Tony understood.

JJ

jayjays1

Thanks Tony, The one on my FB 31 is is chromed bronze so I am holding out for one like that! The aluminium ones don't do it for me now as I can't "unsee" the bronze version!

jayjays1

Thanks. What is involved in bending the bow section? Is it just a heat gun, skill and some care?
JJ

jayjays1

Happy New Year all all ye Bertrams and their owners!!

jayjays1

OK thanks Jeremy but I am looking for the other kind. Hopefully one will come up on eBay sometime.

jayjays1

Jeremy, just want to make sure this is the right one. Difficult to tell from the pics but underneath the black, is this the same metal plate as appears in pics on this post with the little scroll flourish at the top of the plate and a rolled border round the edge?
JJ

jayjays1

Thanks Yannis will consider this. I currently have an FB with 370's in her so what I will do is see how bad the effect is from downstairs while my friend drives from up top.

jayjays1

Thanks Fransesco much appreciated.

JJ

jayjays1

Interesting point. In my B25 sedan the view is restricted while getting up on the plane but is fine once on the plane. Mind you it has the benefit of the i/o cavitation plate! Definitely enough sedans out there so there must be adequate visibility at least. She will also have trim tabs to help keep ...

jayjays1

Will have a downstairs stbd helm.

jayjays1

Thanks Tony is the link below the right one? Is it the same that everyone used on theB31 restos a few years ago? I have a pvc rail on my B31 and it looks good. Just want to know it will look the same as that one?

JJ

https://tacomarine.com/rub-rail-rigid-vinyl-v21-1025

jayjays1

Hey Guys she is a wreck right now with old gasser Mercruisers but not sure which model. I am just trying to discern if the 6.7's will actually fit albeit with complex mods.

Will they? Anyone tried before?

JJ

jayjays1

Thanks Rick. I have come into a FB 31 but it is actually one for which the bridge is only screwed/bolted on. I commute to work by boat each day but I have to get under a small bridge to do that. My 31 with a FB just gets under at high tide but one false move and I will be down a precious FB windshie...

jayjays1

Yes Jeremy very much appreciated! Can anyone tell me how to make a donation to the site??
Doc

jayjays1

On another note I have successfully made contact with Danny and he has sent me pics of rudders, cockpit flooring and some other stuff. He said that he doesn't have the pvc/stainless rub rail but is looking.

jayjays1

Hey DCJ, I am having trouble sending messages from private Messenger. Could you possibly post pic sof the cluster panel when you have a chance? I am not crazy about the aluminium ones.

JJ

jayjays1

Hello folks. Does anyone know of anyone successfully re-powering a B31 with Cummins QSB6.7's?

Let me know if you know of anyone.

JJ

jayjays1

Hi Gentlemen, I hope that everyone thoroughly enjoyed the holidays! I am trying to buy the PVC/ stainless rub rail kit for the B31. I have written a couple of emails to HighTide but no reply. Can anyone let me know how best to proceed?

Cool

JJ

jayjays1

Thanks Tony understood.

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