Hydrofoils

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rob
Posts: 3
Joined: Tue Sep 11, 2018 6:48 am

Hydrofoils

#1 Post by rob » Wed Jun 24, 2020 3:56 am

Hello Has anyone tried a Stingray or other hydrofoil .
I have a 20" Manitou with 70 HP Yamaha

Thanx in advance for answers

rob g

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steve1313
Posts: 396
Joined: Tue Aug 22, 2017 6:33 am

Re: Hydrofoils

#2 Post by steve1313 » Wed Jun 24, 2020 7:24 am

Hydrofoils are primarily used for getting a boat on plane quicker. Since pontoons don't really plane, you're probably not going to see much of a benefit.

What are you hoping to accomplish with it?
Steve
2017 Sweetwater 2286 WB Tritoon w/ 150HP Yamaha "Serendipity"
Slipped at Lake Anna, Virginia
2018 Tesla Model X

rob
Posts: 3
Joined: Tue Sep 11, 2018 6:48 am

Re: Hydrofoils

#3 Post by rob » Sun Jun 28, 2020 4:38 am

Thanx for quick answer.

Boat goes 18mph,and engine trim seems to make little difference.Plus lots of froth near engine.Was hoping for a little more speed,and a little less froth.
I am new to boating.

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Marc K
Posts: 393
Joined: Fri Jun 01, 2018 4:35 am
Location: Cedar Creek Lake, TX

Re: Hydrofoils

#4 Post by Marc K » Sun Jun 28, 2020 5:35 pm

n general, hydrofoils are used to try to help problems after all else fails.

The first thing is prop selection. Important information needed:

What is your rpm when running wide open throttle? It needs to be in the range specified by Yamaha - likely 5500 rpm to 5900 rpm.
Is your prop in good physical condition, or does it have nicks, dings, or other damage?

Look at the mounting height of your motor. There is a small horizontal "fin" partway between the prop and the motor body. Specifically, is it higher, lower, or is it even with the bottom of the pod that the motor is mounted one?

Marc
25' Crest II DL with Yamaha F115 4 Stroke

rob
Posts: 3
Joined: Tue Sep 11, 2018 6:48 am

Re: Hydrofoils

#5 Post by rob » Mon Jun 29, 2020 3:41 am

Hi Marc

definitely lower.

any advice is appreciated .well almost any.

rob g

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Marc K
Posts: 393
Joined: Fri Jun 01, 2018 4:35 am
Location: Cedar Creek Lake, TX

Re: Hydrofoils

#6 Post by Marc K » Mon Jun 29, 2020 6:33 am

Hi Rob,

Prop selection is always the number one thing to look at.

From my post above:

The first thing is prop selection. Important information needed:

What is your rpm when running wide open throttle? It needs to be in the range specified by Yamaha - likely 5500 rpm to 5900 rpm.
Is your prop in good physical condition, or does it have nicks, dings, or other damage?


Marc
25' Crest II DL with Yamaha F115 4 Stroke

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