o-470 72" H series 2 blade questions

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dmm92
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o-470 72" H series 2 blade questions

Post by dmm92 »

o-470 72" H series 2 blade pushing an 11'6" hull. I'm wondering if there are better options (boat feels gutless at times), I've got a feeling that this isn't enough prop for the motor. Any advise / what should I try switching to? Thanks in advance! Image


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kwanjangnihm
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Re: o-470 72

Post by kwanjangnihm »

What is the estimated horsepower of your engine?

Water Walker Signature:
2 blade 70 inch is for 220 HP = 110 HP per blade @ 70 inch
2 blade 72 inch is for 260 HP = 130 HP per blade @ 72 inch
2 blade 74 inch is for 300 HP = 150 HP per blade @ 74 inch
This is all based on turning the prop 3000 rpm.

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Deano
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Re: o-470 72

Post by Deano »

Yes, Jeff is steering you in the right direction. .. :thumbleft:
With a 72" Signature on that hull, if it remotely felt gutless it would be time to call a mechanic.

That H will push after he's wound up, those Signatures will start pushing closer to fat third throttle.
My 472 has a 72" Signature on a 15' Rivermaster. Your 11'6" ought jump right on top of the water.
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One Eyed Gator
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Re: o-470 72

Post by One Eyed Gator »

I would say a 3 rd blade for your H series or get 2 NGQ or Signature blades for the Hub you have.

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goldhunter_2
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Re: o-470 72

Post by goldhunter_2 »

agreed ,,, you need a third H blade
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Gary S
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Re: o-470 72

Post by Gary S »

Try and borrow some Q blades and try that. If looking to buy new, try a Whirlwind Excaliber.

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DAGWOOD0520
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Re: o-470 72

Post by DAGWOOD0520 »

Q series blades put in your same hub will be your best option for better overall thrust and reduced prop sound.

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lilly-Pad
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Re: o-470 72

Post by lilly-Pad »

I was running an NGH on my 0470 as a carry over from my 0320, boat ran fine but needed push. NGH felt fine at high rpm. I went to NGQ blades and it sure made a difference in all around performance for the better for sure.
12 ft Don Davis / 0470 conv / 68 NGQ , A.A.O.F member

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