Author Topic: Hydro Foil (Read 1038 times)

HD · « **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?

glenn57 · « **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!!!!!

Leech~~ · « **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?

Rebel SS · « **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....

mike89 · « **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...

LPS · « **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.

Gunner55 · « **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.

Rebel SS · « **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!

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

HD · « **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!

Rebel SS · « **Reply #9 on:** August 13, 2019, 05:54:02 PM »

Ah, I didn't do anything! Hope it works for ya!

delcecchi · « **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.

HD · « **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.

HD · « **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....

Rebel SS · « **Reply #13 on:** August 23, 2019, 08:06:22 PM »

Well cripes, that sucks the big one!!!!!!!!!!!!!

So now what??

mike89 · « **Reply #14 on:** August 23, 2019, 08:36:14 PM »

that's a new one for what I have seen

LPS · « **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.

glenn57 · « **Reply #16 on:** August 25, 2019, 06:40:51 PM »

why couldn't you just put some weight up front...……….like your beer cooler!!!!!!!

LPS · « **Reply #17 on:** August 25, 2019, 06:43:25 PM »

Ya what he said...

HD · « **Reply #18 on:** August 25, 2019, 06:58:56 PM »

Quote from: glenn57 on August 25, 2019, 06:40:51 PM

why couldn't you just put some weight up front...……….like your beer cooler!!!!!!!

"The General" was in the front of the boat this weekend....and it planed out fine

LPS · « **Reply #19 on:** August 25, 2019, 07:25:13 PM »

There ya go...

glenn57 · « **Reply #20 on:** August 25, 2019, 07:29:22 PM »

Quote from: HD on August 25, 2019, 06:58:56 PM

Quote from: glenn57 on August 25, 2019, 06:40:51 PM
why couldn't you just put some weight up front...……….like your beer cooler!!!!!!!
"The General" was in the front of the boat this weekend....and it planed out fine

well that was dead weight!!!!

The General · « **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.

glenn57 · « **Reply #22 on:** August 26, 2019, 08:06:40 PM »

Quote from: The General 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.

it's birdie hunting season soon.

glenn57 · « **Reply #23 on:** August 26, 2019, 08:41:57 PM »

Quote from: The General 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.

so how the heck you doing anyway.

LPS · « **Reply #24 on:** August 27, 2019, 08:05:58 AM »

Ya long time no see General.

The General · « **Reply #25 on:** September 02, 2019, 04:54:05 AM »

Doing well Glen and hello LPS.

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Author Topic: Hydro Foil (Read 1038 times)

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