Thread: Show us ya boat porn

Stern leg was never an option, we use it to cross bars that are knee deep at low tide, and we’d never had experience with props, just jetboats, so stuck with what was familiar. For down here and crossing west coast bars it performs perfectly. It’s a seahouse hull, LS3 that’s been tuned & 212 unit with turbo impeller. We gps’d 101kph on a flat lake hawea in the early days with two people and no gear. Now 85-90 would be tops. It’ll comfortably do 80 with 4 people and dive gear, but it’s not economical to do so - but turns heads coming in over the bar or into the harbour on a flat day

https://youtu.be/rXcR9_EtdZo


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Originally Posted by JoshC

Stern leg was never an option, we use it to cross bars that are knee deep at low tide, and we’d never had experience with props, just jetboats, so stuck with what was familiar. For down here and crossing west coast bars it performs perfectly. It’s a seahouse hull, LS3 that’s been tuned & 212 unit with turbo impeller. We gps’d 101kph on a flat lake hawea in the early days with two people and no gear. Now 85-90 would be tops. It’ll comfortably do 80 with 4 people and dive gear, but it’s not economical to do so - but turns heads coming in over the bar or into the harbour on a flat day

https://youtu.be/rXcR9_EtdZo


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Very nice anything with an 8 gets my vote.

As an aside how does the 5 knot within 200m of shore rule work on rivers and bars?
Presumably not applicable to rivers or thousands of jet boats would be in the poo?

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Goes ok. Most people that come on it are impressed by its handling in the sea. It’s very solid but very nimble for a bigger boat, launching is a breeze, can handle it solo easy enough too. That was before a muffler was installed, it was quite loud and talking while on route was impossible.

That river at low tide you can cross with gumboots on. We’ve only come in there at low tide a couple of times.

Not sure of the legalities there regarding speeds over bars. There are obviously rivers that are open, certain rivers that have official ‘liftings’ generally only for jet boat association members, and rivers that are completely closed. That info is generally easy to find. In the cases of our bars here, the chance of actually seeing/meeting another boat is fairly minimal anyway, particularly at mid-low tide.


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Will you picks stop it, I’m already knee deep designing my next boat and I haven’t even finished the one I’m building now

Originally Posted by JoshC

Stern leg was never an option, we use it to cross bars that are knee deep at low tide, and we’d never had experience with props, just jetboats, so stuck with what was familiar. For down here and crossing west coast bars it performs perfectly. It’s a seahouse hull, LS3 that’s been tuned & 212 unit with turbo impeller. We gps’d 101kph on a flat lake hawea in the early days with two people and no gear. Now 85-90 would be tops. It’ll comfortably do 80 with 4 people and dive gear, but it’s not economical to do so - but turns heads coming in over the bar or into the harbour on a flat day

https://youtu.be/rXcR9_EtdZo


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That’s very cool, love the sound of the 8!

I used to have one that could do this, never tried it though!
Standard launch at Pennington, Natal south coast.

https://youtu.be/kT1BvBjlhqU




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Originally Posted by Spudattack

That’s very cool, love the sound of the 8!

I used to have one that could do this, never tried it though!
Standard launch at Pennington, Natal south coast.

https://youtu.be/kT1BvBjlhqU




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Oh, and that’s not me sitting on the beach with the jack Russel!


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So your ls3 is twice as efficient as the most economical diesels you can buy 2day . Ok . My 7m boat burns 1 litre an hour at wot and at idle it makes petrol I win

Originally Posted by stub

So your ls3 is twice as efficient as the most economical diesels you can buy 2day . Ok . My 7m boat burns 1 litre an hour at wot and at idle it makes petrol I win

My ls1 jet does 20l per hour at probably 40kmh average but river boating so so,e heavy throttle at times. I would imagine it would be closer to 80l an hour at 100kmh however. Would probably blow up before I found out....

Boat weighs probably 800kg??

For a bit of reference my (old now but new at the time) gp1300r injected twostoke was rated to burn 60l per hour at full throttle at 165hp......I found that to be very accurate racing around bouys(full throttle 100% of the time) but on the same ski could cruise the entire abletasman+sightseeing two up for around 40l for 6hours

there is varing efficiency's of different hulls engines etc but nowadays the actual horsepower produced and fuel burn per hour is very very close for modern injected engines.

My current 40hp on a 4.5m boat burns the same/more than a lot of 5.5m-6m with modern injected 90-150hp engines but mine fits in my shed and I could afford to buy it which is a massive bonus for me.
mine will burn less per hour but mine cruises at 16-18 knots instead of 25-30knt...going any distance its cheaper(not to mention quicker/safer/dryer/more comfortable) in the bigger boat but hey I still catch fish

Originally Posted by PerazziSC3

My ls1 jet does 20l per hour at probably 40kmh average but river boating so so,e heavy throttle at times. I would imagine it would be closer to 80l an hour at 100kmh however. Would probably blow up before I found out....

Boat weighs probably 800kg??

Most family V8 jet boats should burn around 20-35 litres per hour normal use, if not, there is something wrong. Like you say it's not until you use excessive throttle or inconsistent throttle that you'll burn through the gas. As you'll know, if you get on flat water and cruise at say 3500-3800rpm cruising speeds your consumption is quite reasonable and predictable. We'd never red-line at top speed for a long period of time either, but you'd be surprised at the durability of the LS motor - especially with a governor/limiter - don't think it'll just blow up

For us, if we go out on a rough day we'll use double the amount of fuel we'd use on a calm day. The last trip we did across to Stewart Island and a mornings fishing we powered across to the island from Bluff and pissed around codding for four hours, engine on and off as we drift fished, then powered home. Was oily flat all morning. Filled boat on the way home and put 93 litres in. For a week's trip down at Stewart Island or in Doubtful Sound etc we usually have 400 liters on board with us and haven't run out yet. At the end of the day we don't care how much fuel we go through, having a reliable and safe set up is the priority.

D.P

Getting closer. Should be delivered next week....




Can't wait!😊

I must go to sleep so I'm not too tired to drive.
I must go to sleep so I'm not too tired to drive.
I must go to sleep so I'm not too tired to drive.
I must go to sleep so I'm not too tired to drive.
I must go to sleep so I'm not too tired to drive.
I must go to sleep so I'm not too tired to drive.
...

Originally Posted by Beaker

Getting closer. Should be delivered next week....Attachment 83011

Attachment 83012


Can't wait!

I can't wait to drag my sinkers up the side of it

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Originally Posted by R93

I can't wait to drag my sinkers up the side of it

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I even got a anchor windless, so I don't have to listen to you moan about pulling up the anchor ......