No power

[tarasstjean]

I've been trying to nail down what stock ballast was in 2017. 3200lbs listed but no idea what the stock plug and play was. The previous owner said he didn't upgrade the rear locker bags, it came with the 750's apparently. The dealers coming out to take a spin on the boat tomorrow. Hopefully hes got some answers. The dry weight spec is 5300lbs on the boat, 6200 wet probably not far off.

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[KnoxMojo]

I have a 400 with a 15.5 x 15 pitch on a Malai. With 4k of full ballast plus 8 people I can easily hit surf speeds of 11.2 at 3200-3250 rpm. The 450 should have no trouble at all if running right.

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Not apples to apples, you have the newer 1.76 transmission, he has the 1.5.

[KnoxMojo]

I've been trying to nail down what stock ballast was in 2017. 3200lbs listed but no idea what the stock plug and play was. The previous owner said he didn't upgrade the rear locker bags, it came with the 750's apparently. The dealers coming out to take a spin on the boat tomorrow. Hopefully hes got some answers. The dry weight spec is 5300lbs on the boat, 6200 wet probably not far off.

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3200 is correct, there are 250 pound hard tanks in the rear with soft bags on top. Center 500 pound tank with 700 pound bow bag. Not sure you really have any issues. I have an 18 SA with a 15x12.5 prop as well. No way I am getting to speed running full send plus 1500 pounds of people. And it isn't needed either. Your surf wave and wakeboard wake will be plenty huge running bow weight and a little ballast in the rear. I am the one getting the 1.76 V drive under warranty.

[larry_arizona]

Your rear bags should fill the rear lockers when full and stop before the opening of your two side seats where the cooler goes.

I suspected you just can’t pull that weight at that elevation with the 440 raptor.

You could drop a 1.76 transmission in it and pull that weight and a lot more. Huge upgrade over the 1.5.

Also if you were originally running 87 octane, you were losing a little more engine power.

It all adds up.

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[KnoxMojo]

Your rear bags should fill the rear lockers when full and stop before the opening of your two side seats where the cooler goes.



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His rear bags don't fill to the top of the locker like your and mine 18. He has 750 rear bags, we have\had 900s.

Regardless, he is running way too much weight.

[tarasstjean]

Thanks guys. This is all making way more sense now. I do find it odd that I can overweight it with factory ballasts. But as you both mentioned, half ballast and the wave was beautiful. I am looking for a 19 SA so we'll see where that goes. Thanks again, that's the info I needed.

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[larry_arizona]

I think it’s a bunch of little things that stacked against you.

1) elevation power loss
2) running 87 octane
3)your stern too heavily loaded
4)losing bow ballast, sinking stern even deeper.

1300# of crew and 500# of lead should work in a 17SA, but I would redistribute that lead mid ship and in bow to help get that stern up.

Turn autowake off too.


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[2in2out]

I think it’s a bunch of little things that stacked against you.

1) elevation power loss
2) running 87 octane
3)your stern too heavily loaded
4)losing bow ballast, sinking stern even deeper.

1300# of crew and 500# of lead should work in a 17SA, but I would redistribute that lead mid ship and in bow to help get that stern up.

Turn autowake off too.


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3 and 4 in this list also triggered me to ask what your pitch is. If you’re over 10 degrees performance is going to be impacted because the prop is now attempting to push the boat out of the water instead of through the water. The prop will also be in the cavitation zone between the hull and the pile of water aerated by the laminar flow disruption.


Currently boatless

[tarasstjean]

So the dealer came out yesterday. There were 3 200 lb guys in the boat. I had moved my lead to mid ship as you mentioned and the change he made was the crossover setting from 50 to 80 on the center tab. It's working great now. As you all mentioned, I believe it was toom much in the stern but with the weight moved midship and the plate crossover things seem to be coming around.

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[larry_arizona]

So the dealer came out yesterday. There were 3 200 lb guys in the boat. I had moved my lead to mid ship as you mentioned and the change he made was the crossover setting from 50 to 80 on the center tab. It's working great now. As you all mentioned, I believe it was toom much in the stern but with the weight moved midship and the plate crossover things seem to be coming around.

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Glad it’s working now.


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