Hydrofoils on FS14's with 15 hp or smaller OBs.

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Capt UB
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Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by Capt UB » Sun Sep 02, 2018 6:32 pm

With all the FS14's that have been built, how many have used/tried or are using Hydrofoils on their OB's?

Just the FS14 boats only..

Helping or not?


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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by thb » Sun Sep 02, 2018 7:07 pm

I do not have a hydrofoil on my 15 hp Yamaha 2 stroke on my FS14. It runs just fine without it. My build was probably on the heavy side as it had a complete layer of Kevlar on the bottom. I documented that build here so if you do a search you can probably find it.

When you going to launch??

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Tom In Steinhatchee

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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by TomW1 » Mon Sep 03, 2018 9:48 am

Capt I would not worry about getting one yet. Wait until you get her launched and see how she handles. If she does porpoise you may be able to move some weight around to eliminate it without buying a fin. With your motor on the lower end of the recommended range you may not need one.

Tom
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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by Capt UB » Mon Sep 03, 2018 12:39 pm

thb wrote:
Sun Sep 02, 2018 7:07 pm
I do not have a hydrofoil on my 15 hp Yamaha 2 stroke on my FS14. It runs just fine without it. My build was probably on the heavy side as it had a complete layer of Kevlar on the bottom. I documented that build here so if you do a search you can probably find it.

When you going to launch??

Regards
Tom In Steinhatchee

Thanks Tom.
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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by Newt » Thu Sep 06, 2018 8:11 pm

Experiment first, spend money later. :D

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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by Capt UB » Fri Sep 07, 2018 5:59 am

With all the FS14's that have been built, how many have used/tried or are using Hydrofoils on their OB's?

Just the FS14 boats only..

Helping or not?



Ask other first!
Experiment first, spend money later.

Newt
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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by Jeff » Fri Sep 07, 2018 7:36 am

Capt UB, not sure as there has not been much conversation specific to hydrofoils for the FS14 in the last few years (to my memory anyway)!! Jeff

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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by jacquesmm » Fri Sep 07, 2018 8:42 am

It took me a while to understand but I believe he means something like a Doelfin, a cavitation plate foil.
If you are alone in the boat and want to sit in the stern, they work well to correct the trim.
Another solution is to add two small L shaped angles acting like trim tabs.
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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by Capt UB » Fri Sep 07, 2018 8:59 am

Jeff wrote:
Fri Sep 07, 2018 7:36 am
Capt UB, not sure as there has not been much conversation specific to hydrofoils for the FS14 in the last few years (to my memory anyway)!! Jeff

I added Doelfin to the 9.8 for the NMZ Gheenoe I had. Going to take them off, just wanted to know if any FS14's were using them. Not a fan of them at all, but did need them for the 87 lbs. 9.8 4 stroke on the Gheenoe. The FS14 has a big bottom, so lots of lift.

Thanks for the reply.

Bob
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Re: Hydrofoils on FS14's with 15 hp or smaller OBs.

Post by Capt UB » Fri Sep 07, 2018 9:01 am

jacquesmm wrote:
Fri Sep 07, 2018 8:42 am
It took me a while to understand but I believe he means something like a Doelfin, a cavitation plate foil.
If you are alone in the boat and want to sit in the stern, they work well to correct the trim.
Another solution is to add two small L shaped angles acting like trim tabs.

I added Doelfin to the 9.8 for the NMZ Gheenoe I had. Going to take them off, just wanted to know if any FS14's were using them. Not a fan of them at all, but did need them for the 87 lbs. 9.8 4 stroke on the Gheenoe. The FS14 has a big bottom, so lots of lift. Can't wait to see her in the water...

Bob
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