Getting Your Hull Re-rated?

[YoungFisho]

Hi guys,
We are in the process of building a complete false floor and 70L in our Explorer 385 which will add a decent amount of weight to the boat, especially when the tank is full. We currently have a 25hp on the back but by the looks of things we are going to have to upgrade so are we allowed to beef up the transom and maybe some structural work to put a bigger motor on it? Like a 35hp - 40hp? Or do we have to contact Quintrex and get a Marine Engineer to inspect it?

Any help would be greatly appreciated

Cheers,
Anders

[ptr244]

From what I've heard Quintrex won't do it, best bet is to find an engineer that will up the rating. It's really only necessary for insurance but if you do have an accident (god forbid) and you injure someone or worse you really need insurance!!

[YoungFisho]

Originally Posted by ptr244

From what I've heard Quintrex won't do it, best bet is to find an engineer that will up the rating. It's really only necessary for insurance but if you do have an accident (god forbid) and you injure someone or worse you really need insurance!!

Thanks mate! Greatly appreciated will have to have a look around for an engineer now! Cheers

[Rhet]

I used a guy by the Name of Nick Lockyer. See link: http://kpsmaritime.com.au/

He is based out of Coomera on the Northern Gold Coast, but I know he travels a bit so he might do it on his way to another job, or recommend someone where you are.

He makes it am easy process with no hassle and supply's a new compliance plate as part of the arrangement.

[oldbarboy]

http://www.yellowpages.com.au/nsw/ta...7-listing.html

This is a link to Bruce Collins in Taree, he is a structural engineer. I'm not sure if he does marine engineering but someone at Steber Craft or Shearwater Marine at Taree may know of one.

Is there no one at Forster?

[mr perch]

Finish the project , then test it out with the 25hp.......should still get up ok.
Good luck mate

[YoungFisho]

Originally Posted by Rhet

I used a guy by the Name of Nick Lockyer. See link: http://kpsmaritime.com.au/

He is based out of Coomera on the Northern Gold Coast, but I know he travels a bit so he might do it on his way to another job, or recommend someone where you are.

He makes it am easy process with no hassle and supply's a new compliance plate as part of the arrangement.

This guy looks really good, thank you for the help!

[YoungFisho]

Originally Posted by oldbarboy

http://www.yellowpages.com.au/nsw/ta...7-listing.html

This is a link to Bruce Collins in Taree, he is a structural engineer. I'm not sure if he does marine engineering but someone at Steber Craft or Shearwater Marine at Taree may know of one.

Is there no one at Forster?

Thanks mate I have only spoken to the boys at Barclay's and they said you'd have to talk to Quintrex and they will only rate it up 10hp so I really haven't had a look. Just curious as to how much mucking around we might have to do but depends on my Dad too, he's keeps changing his mind

[YoungFisho]

Originally Posted by mr perch

Finish the project , then test it out with the 25hp.......should still get up ok.
Good luck mate

Yeah that's Dad's idea now! hopefully it does go alright but there's nothing wrong with having a bit more horsepower

[nuzzy]

Talk to Al at Numurkah customised boats in Melbourne. It's a very easy process and surprisingly cheap.

http://www.numurkahcustomizedboats.com/About-Us.html

[Danmaso]

The transom is easy to strengthen the limiting factor will be the thickness of the aluminum on the bottom of the hull...

[Onthedrop86]

Originally Posted by YoungFisho

Yeah that's Dad's idea now! hopefully it does go alright but there's nothing wrong with having a bit more horsepower

A 25 will go pretty sweet on it mate, that's what I used to have on my old explorer.

[YoungFisho]

Originally Posted by Onthedrop86

A 25 will go pretty sweet on it mate, that's what I used to have on my old explorer.

Yours was professionally modified if I remember too but yeah we'll just wait and see with Dad

[YoungFisho]

Originally Posted by Danmaso

The transom is easy to strengthen the limiting factor will be the thickness of the aluminum on the bottom of the hull...

I know what you mean, Quintrex only have a 1.6mm bottom sheet

[freshjacker]

Mate, I did probably the same boat build as yourself when I was younger, had the transom beefed up and plated which can be done, But like said earlier the governing factor is the bottom of the hull. I got 2 and a bit years out of mine with a 40 four stroke Yamaha, then tore it open like a tin can on the joining hull weld to the side wall, you can always patch it up but it will just run the crack somewhere else. I just called it a day with that boat stripped it back to just the basic boat and sold it. Here's a pick of it just before i sold it.