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Author Topic:   Aussie Whaler ressurected

Peter Dicker posted 03-13-2000 07:22 AM ET (US)
An awful lot has happened since posting the last reply but in a nutshell - the insurance company has agreed to repair the damage to the hull and have declared the outboard a total loss. The shipwright has strict instructions from me to completely fill the newly repaired hull with polyurethane expanding foam. Afterwhich the boat will be in essence the same, performance wise, as the BW 13. This leaves me with a situation to ponder as to which new outboard to put back on the hull. All the major manufacturers, and fishing boat testers out here are currently singing the praises of four strokes. The previous motor was a 1999 model 3 cylinder 40hp ELPTO Mercury. For the same dollars I could have either a new 2 stroke 40 or a new 4 stroke 30. What do you think?
Most of the time I use the boat for river and dam bass fishing (yes, there are such things as Australian Bass) and occasionally for pulling children and adults on a ski biscuit. Any suggestions or advice would be greatly appreciated.....regards Peter.
david in boston posted 03-13-2000 09:40 PM ET (US)
I am getting a 70 hp tohatsu for my whaler 17. they are very reliable from what I have researched. made in japan, they also make all the nissan engines and many other well known brands. there 40 hp is very powerful. there are many dealerships in Austrailia, check the website for more info.
lhg posted 03-13-2000 10:28 PM ET (US)
Peter: Glad to hear that you've been able to save your boat, but I almost hate to tell you that, in spite of the addition of foam into the hull voids, it is almost impossible to duplicate the Boston Whaler system of hull construction in a repair requiring structural foam, even on a Whaler.
The key to the tremendous hull weight-to-strength ratio is the fact that the foam injection creates tremendous pressure against the STILL UNCURED fiberglass chopper gun mix forming the inner & outer hulls,(as the foam expands) and forms a permanent structural BOND with the still wet resins in the skins, both materials curing together as one. This bond, absent of any voids, is essential to the safety and strength of the Boston Whaler hull, since there are no other structural elements in the hull. As you may have noticed in the trailer discussion, Boston Whaler has always been concerned that nothing cause a foam delamination from the skin of the boat, which can destroy the boat's integrity.
On of the most difficult procedures in the making of the Whaler hulls is containing the pressure exerted against the molds when the foam is added. The two parts of the hull are clamped together, with all sections being braced, to avoid hull distortion from the pressure of the expanding foam. I don't think there is any way that your repair shop will be able to re-create a true Whaler foamed hull, in spite of what they may tell you.

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Author	Topic: Aussie Whaler ressurected
Peter Dicker	posted 03-13-2000 07:22 AM ET (US) An awful lot has happened since posting the last reply but in a nutshell - the insurance company has agreed to repair the damage to the hull and have declared the outboard a total loss. The shipwright has strict instructions from me to completely fill the newly repaired hull with polyurethane expanding foam. Afterwhich the boat will be in essence the same, performance wise, as the BW 13. This leaves me with a situation to ponder as to which new outboard to put back on the hull. All the major manufacturers, and fishing boat testers out here are currently singing the praises of four strokes. The previous motor was a 1999 model 3 cylinder 40hp ELPTO Mercury. For the same dollars I could have either a new 2 stroke 40 or a new 4 stroke 30. What do you think? Most of the time I use the boat for river and dam bass fishing (yes, there are such things as Australian Bass) and occasionally for pulling children and adults on a ski biscuit. Any suggestions or advice would be greatly appreciated.....regards Peter.
david in boston	posted 03-13-2000 09:40 PM ET (US) I am getting a 70 hp tohatsu for my whaler 17. they are very reliable from what I have researched. made in japan, they also make all the nissan engines and many other well known brands. there 40 hp is very powerful. there are many dealerships in Austrailia, check the website for more info.
lhg	posted 03-13-2000 10:28 PM ET (US) Peter: Glad to hear that you've been able to save your boat, but I almost hate to tell you that, in spite of the addition of foam into the hull voids, it is almost impossible to duplicate the Boston Whaler system of hull construction in a repair requiring structural foam, even on a Whaler. The key to the tremendous hull weight-to-strength ratio is the fact that the foam injection creates tremendous pressure against the STILL UNCURED fiberglass chopper gun mix forming the inner & outer hulls,(as the foam expands) and forms a permanent structural BOND with the still wet resins in the skins, both materials curing together as one. This bond, absent of any voids, is essential to the safety and strength of the Boston Whaler hull, since there are no other structural elements in the hull. As you may have noticed in the trailer discussion, Boston Whaler has always been concerned that nothing cause a foam delamination from the skin of the boat, which can destroy the boat's integrity. On of the most difficult procedures in the making of the Whaler hulls is containing the pressure exerted against the molds when the foam is added. The two parts of the hull are clamped together, with all sections being braced, to avoid hull distortion from the pressure of the expanding foam. I don't think there is any way that your repair shop will be able to re-create a true Whaler foamed hull, in spite of what they may tell you.