Outboard Hydrofoil

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philsinel
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Posts: 8
Joined: Wed Sep 07, 2016 12:23 pm

Outboard Hydrofoil

Post by philsinel » Sat Sep 14, 2024 3:31 pm

I am looking a outboard hydrofoil for Yamaha 90hp - what do you recommend and why?

I have seen some are no drill Like the idea in case damage foil and cant get same model / size etc. Anyone used one? eg https://www.bcf.com.au/p/stingray-sting ... 20#start=6

Most seem to be similar width, but the length varies a lot eg
- short https://www.bcf.com.au/p/stingray-sting ... =BCF011020
- OR long https://permatrimaustralia.com.au/produ ... permatrim/

thanks

Birchie
Posts: 14
Joined: Sat Aug 12, 2023 8:14 am

Re: Outboard Hydrofoil

Post by Birchie » Tue Sep 17, 2024 8:16 pm

A work mate just sold his tinnie and I got his for a good price,only have tried it once last weekend it’s on my 130 2/s yammy.
First impressions keep the nose down in the lower revs, not so much bow rise.
Second feelings seem to drag the boat doing faster knots.
Going out this weekend for a squid and might do the exercise of before and after installation feelings.

philsinel
Club Member
Posts: 8
Joined: Wed Sep 07, 2016 12:23 pm

Re: Outboard Hydrofoil

Post by philsinel » Wed Sep 18, 2024 8:33 am

I guess the work by the fin to lift boat onto plane faster requires work that also lowers the top speed. thanks

Birchie
Posts: 14
Joined: Sat Aug 12, 2023 8:14 am

Re: Outboard Hydrofoil

Post by Birchie » Wed Sep 18, 2024 6:04 pm

Phil it’s easy to remove if you want to try.

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Liam Surridge
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Posts: 59
Joined: Mon May 21, 2012 3:43 pm
Location: Perth

Re: Outboard Hydrofoil

Post by Liam Surridge » Thu Sep 19, 2024 2:38 pm

I have Doelfin - it works great. Have to drill into engine leg to instal each wing.

https://www.whitworths.com.au/doel-fin- ... -fin-black

It helps get the boat on the plane faster and using less fuel. Helps on boats with lots of weight in stern and centre of mass more towards the stern.

Lots of options out there.

philsinel
Club Member
Posts: 8
Joined: Wed Sep 07, 2016 12:23 pm

Re: Outboard Hydrofoil

Post by philsinel » Tue Oct 01, 2024 1:25 pm

Thanks for info. Other things have popped up since raising this, so will get back to later and hopefully before boneheads

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