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Offline HD

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Hydro Foil
« on: August 12, 2019, 04:34:59 PM »
Have you guys used these?

I have one on my 90 hp Merc and never really noticed any change in getting on plain sooner..

BUT, I bought a new 15hp for my 14ft river rat boat and I'm having trouble getting it up on plane with just me in the stern. If I have someone in the front, or and extra 100 pounds of junk, I plane out just fine.

I'm thinking about putting one on this small motor....will it help?
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Online glenn57

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Re: Hydro Foil
« Reply #1 on: August 12, 2019, 05:04:17 PM »
I had one on my old boat that had a 25 horse. I don't recall anything significant that stands out weather it was worth it or not!!!!! :scratch: :scratch: :scratch:
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Online Leech~~

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Re: Hydro Foil
« Reply #2 on: August 12, 2019, 05:24:55 PM »

When by yourself have you tried setting the motor trim all the way in on the last trim hole? 
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Online Rebel SS

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Re: Hydro Foil
« Reply #3 on: August 12, 2019, 06:50:19 PM »
I saw tests on those in Walleye/Boats mag tech tests...said they created significant drag on smaller engines. A lot depends on hull and weight disbursement. (As you already know)
Thats what determines how soon yer boat planes out under power....
« Last Edit: August 12, 2019, 06:52:35 PM by Rebel SS »

Online mike89

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Re: Hydro Foil
« Reply #4 on: August 12, 2019, 07:12:11 PM »
I have one on my 40, using that and the trim really helps plane out the boat...  and I have a hand tiller set up...
« Last Edit: August 12, 2019, 07:47:38 PM by mike89 »
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Offline LPS

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Re: Hydro Foil
« Reply #5 on: August 12, 2019, 07:16:08 PM »
I have had them on a few boats.  Usually to remedy too small of a motor.  I do think they help.  Still have to gun it to get some water flowing to make it work.  Then you can back off once you are up on plane. 

Online Gunner55

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Re: Hydro Foil
« Reply #6 on: August 13, 2019, 08:56:03 AM »
We had 1 on an old glass boat that only had a 35HP on it, couldn't really tell that it helped or not IMO. :confused:
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Re: Hydro Foil
« Reply #7 on: August 13, 2019, 09:05:37 AM »
I just went back to read some tech columns and reviews on this.....seems they feel it DOES provide a boost and helps. I stand corrected!  :bow: Also info on finding ones that attach without drilling thru yer plate, there's a few that have tight holding lockdown clips that stated work well.....

https://www.amazon.com/Sport-Marine-Technologies-Inc-779-73434/dp/B002HW3IJO
« Last Edit: August 13, 2019, 09:24:37 AM by Rebel SS »

Offline HD

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Re: Hydro Foil
« Reply #8 on: August 13, 2019, 05:49:28 PM »
The one you posted is to big for my motor Rebbs....but, they do have smaller ones available.
I REALLY don't want to drill holes in my new motor, but already bought one that requires holes (it has not been delivered yet)

I think I'll buy one of these first (they're not that expensive) and if it don't work...then I'll drill holes.

Thanks for finding it Reb!  :happy1:
« Last Edit: August 13, 2019, 06:07:33 PM by HD »
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Re: Hydro Foil
« Reply #9 on: August 13, 2019, 05:54:02 PM »
Ah, I didn't do anything! Hope it works for ya!  :happy1:

Online delcecchi

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Re: Hydro Foil
« Reply #10 on: August 14, 2019, 12:13:24 PM »
Some boats benefit from a wedge on the transom to give a little more negative trim for starting out.   Of course that is for boats with power trim mostly.

Offline HD

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Re: Hydro Foil
« Reply #11 on: August 23, 2019, 07:08:14 PM »
Ok....the bad news.... and the bad news.....
I purchased a stingray hydrofoil, a SEsport hydrofoil and a clamp (so I didn't have to drill holes)

NONE, of which will work with my new Yamaha boat motor (of course they didn't list it because the design is to new)

There is a water intake on the bottom of the fin of the lower unit that is blocking the "no drill clamp" from being used. If I cut it to make it fit around this intake, it would render it useless because it would spread a part.

If I skipped the clamp plate, and decided to drill, I would drill into that intake plate. Unless I clamp the foil in a Bridgeport and elongate the slot, it won't work on either hydrofoil.  :banghead:
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Re: Hydro Foil
« Reply #12 on: August 23, 2019, 07:26:18 PM »
I must add, the bolt pattern on both hydrofoils is the exact same. So, it might be a universal pattern, because they come from 2 different companies. Oooorrrrrr.... it's a coincidence....  :scratch:
« Last Edit: August 23, 2019, 08:06:28 PM by HD »
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Re: Hydro Foil
« Reply #13 on: August 23, 2019, 08:06:22 PM »
Well cripes, that sucks the big one!!!!!!!!!!!!! :angry: So now what??

Online mike89

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Re: Hydro Foil
« Reply #14 on: August 23, 2019, 08:36:14 PM »
that's a new one for what I have seen 
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Offline LPS

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Re: Hydro Foil
« Reply #15 on: August 24, 2019, 11:12:58 AM »
I am not an expert but I have had a few boats with the hydrofoil on them and seemed to work ok.  I have not heard of anyone putting one on a motor that small before. 

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Re: Hydro Foil
« Reply #16 on: August 25, 2019, 06:40:51 PM »
why couldn't you just put some weight up front....like your beer cooler!!!!!!! :happy1: :happy1:
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Re: Hydro Foil
« Reply #17 on: August 25, 2019, 06:43:25 PM »
Ya what he said...

Offline HD

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Re: Hydro Foil
« Reply #18 on: August 25, 2019, 06:58:56 PM »
why couldn't you just put some weight up front....like your beer cooler!!!!!!! :happy1: :happy1:
"The General" was in the front of the boat this weekend....and it planed out fine  ;)
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Offline LPS

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Re: Hydro Foil
« Reply #19 on: August 25, 2019, 07:25:13 PM »
There ya go... 

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Re: Hydro Foil
« Reply #20 on: August 25, 2019, 07:29:22 PM »
why couldn't you just put some weight up front....like your beer cooler!!!!!!! :happy1: :happy1:
"The General" was in the front of the boat this weekend....and it planed out fine  ;)
well that was dead weight!!!! :rotflmao: :rotflmao: :rotflmao:
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Offline The General

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Re: Hydro Foil
« Reply #21 on: August 26, 2019, 06:45:17 PM »
Little birdie told me you were flapping your gums again.   That weight is 100% steel and sex appeal.    :happy1:
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Re: Hydro Foil
« Reply #22 on: August 26, 2019, 08:06:40 PM »
Little birdie told me you were flapping your gums again.   That weight is 100% steel and sex appeal.    :happy1:
:nerd: :nerd: :nerd: :nerd: :confused: :rotflmao: :rotflmao: it's birdie hunting season soon. :rotflmao:
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Re: Hydro Foil
« Reply #23 on: August 26, 2019, 08:41:57 PM »
Little birdie told me you were flapping your gums again.   That weight is 100% steel and sex appeal.    :happy1:
so how the heck you doing anyway. :scratch:
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Offline LPS

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Re: Hydro Foil
« Reply #24 on: August 27, 2019, 08:05:58 AM »
Ya long time no see General.

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Re: Hydro Foil
« Reply #25 on: September 02, 2019, 04:54:05 AM »
 Doing well Glen and hello LPS.
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