Hydrofoil question..which one goes here?

[danacman]

New to me motor, ns30a4,. I want to add a hydrofoil stabilizer. The motor has holes where previous owner may of had one mounted but decided to remove it. I'd like to go with the same one cause i don't want to make extra holes. I have no clue what was on there and can't get of hold of po. The holes are 4" apart at center measuring from hole to hole on same side.
They are 3.75 inches apart at center going across trim tab. ANy ideas would be greatly appreciated.

 

[jestor68]

Re: Hydrofoil question..which one goes here?

I can't tell you which one it is; but I can help eliminate a couple.

The Doel Fin and basic Stingray use the same holes and they are only like 2-1/2 inches apart.

I suspect whatever was on there was BIG. :faint2:

 

[danacman]

Re: Hydrofoil question..which one goes here?

Made a trip to sporting store, they had a stingray jr which the holes on the same side measured 3.75" (on center) apart. I should of measured the larger one also:facepalm: looks like I'm going back....anyone need anything?

 

[NYBo]

Re: Hydrofoil question..which one goes here?

The one on mine (Attwood, I think) is two separate pieces.

EDIT: Yep, it's an Attwood and the holes are 4" from each other on each side. Attwood Hydro-Stabilizer 9400-7 - iboats Mine appear to be installed backwards. :facepalm:

 

[danacman]

Re: Hydrofoil question..which one goes here?

Hey thanks Bob,:happy: is yours the 94007 50hp+ or the smaller 94014?

 

[NYBo]

Re: Hydrofoil question..which one goes here?

The larger, I imagine. Came with the motor.

 

[danacman]

Anyone have a TH Marine hydro tail?

Anyone have a TH Marine hydro tail?

Need to find the bolt spacing, trying to figure out which hydrofoil used to be on my motor. thanks

 

[QC]

Re: Hydrofoil question..which one goes here?

Let's keep this in one thread to eliminate confusion. Thanks

 

[crabby captain john]

Re: Hydrofoil question..which one goes here?

The designer of your boat did so no hydrofoil was needed. If there is a problem a hydrofoil may mask it but not fix it. Not fixing might come back and bite in the end. he may also have had a "Happy Troller" or similar device instead of a hydrofoil.

 

[MRS]

Re: Hydrofoil question..which one goes here?

he may also have had a "Happy Troller" or similar device instead of a hydrofoil.

That's what I was thinking you already have holes a few more will not hurt buy what you like. Once you have the new one on will not see the old holes anyhow..

 

[matt167]

Re: Hydrofoil question..which one goes here?

Yup indeed. I went out and measured a " Fish- On " brand trolling plate that I have and the bolt spacing is 4" on center front to back, and 3 3/4" side to side.

The troller I have is just like this.. PO might have thought he did not want to spend another $30-40 on another ( regular retail price is around that )

Tempress Fish ON Regular Troller 74030 | eBay

 

[JimS123]

Re: Hydrofoil question..which one goes here?

The designer of your boat did so no hydrofoil was needed. If there is a problem a hydrofoil may mask it but not fix it.

If that were true the foil would never have been invented. Truth is that back in the day they weren't needed because the Naval Architects of the day designed hulls for "performance". Today that word just means speed, and that's why foils have become so popular.

 

[Mi duckdown]

Re: Hydrofoil question..which one goes here?

I would run the boat and see if you really need a hyrdo. Also your pics do not show the vent plate to bottom of boat.???

 

[NYBo]

Re: Hydrofoil question..which one goes here?

The designer of your boat did so no hydrofoil was needed. If there is a problem a hydrofoil may mask it but not fix it.

If the problem goes away after the installation of a hydrofoil, then the problem IS fixed.

 

[smokeonthewater]

Re: Hydrofoil question..which one goes here?

If the problem goes away after the installation of a hydrofoil, then the problem IS fixed.

Not "fixed" but rather "compensated for"

 

[metriccrescentwrench]

Re: Hydrofoil question..which one goes here?

op2:

 

[NYBo]

Re: Hydrofoil question..which one goes here?

Not "fixed" but rather "compensated for"

In almost all cases, that would be functionally the same thing. They have limitations, but within those limitations I can't see a need to worry that the problem isn't "fixed." A hydrofoil isn't going to overcome saturated flotation foam, for example.

 

[smokeonthewater]

Re: Hydrofoil question..which one goes here?

Guess we'll have to agree to disagree

 

[crabby captain john]

Re: Hydrofoil question..which one goes here?

No,, it is covered up....

If the problem goes away after the installation of a hydrofoil, then the problem IS fixed.

 

[crabby captain john]

Re: Hydrofoil question..which one goes here?

Sounds like a plan!!!

Guess we'll have to agree to disagree