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Old 17 September 2002, 12:45   #1
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Do Hydrofoils make any difference ?

I have seen Hydrofoils advertised, 15.99 up to 50hp and 22.99 over 50hp.

Could anyone explain what they actually do, in what circumstances you would you fit one, and if they are really worth fitting.

Thanks

Pete
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Old 17 September 2002, 13:14   #2
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I have them fitted to the twins that I have, we have a problem of a heavy stern and it helps lift it,

For the price of them, if you think it would help, i would try them and if they dont , just take them off.
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Old 17 September 2002, 17:12   #3
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Yes they can make a difference. On my set up they reduce planing time, give better stern lift, reduce planing speed. Dissadvantages are you lose 2 or 3 MPH on top end due to increased drag.

If you have a perfectly balanced boat you should not need one.
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Old 18 September 2002, 03:52   #4
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Quote:
Originally posted by JCW
If you have a perfectly balanced boat you should not need one.
That's the key in my opinion -- you shouldn't need them, but in some circumstances they can be very useful.

Only fit them if you really think that your boat needs them.

John
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Old 18 September 2002, 06:27   #5
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I have one on Blue Ice on the Yam 200 but since it was fitted when I bought the boat can't really comment on what it does for me!
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Old 18 September 2002, 12:04   #6
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I have a 4 metre searider and fitted them on with a 50hp mercury...it helps plane at a slower speed with more people onboard.... I have a good setup but being a small boat even with everyone centred around the middle and kit stowed in the right place it just helps u plane quicker....
Technical notion is it increases the boats overall length slightly and therefore should give u a better top speed....I noticed no difference in speed, but planes easier...therefore better for watersports.. and economy
Alex
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Old 18 September 2002, 15:14   #7
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Answer : Yes

they principly help you get on the plane quicker, particularly where you may be trying to pull a skier

I guess as it reduces the effort required to get over the plane hump, it will ultimately help on fuel on this basis alone ??

Will also help reduce porpoising
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Old 19 September 2002, 07:17   #8
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Hey matiboy what happened to your Valliant??
Alex
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Old 20 September 2002, 16:34   #9
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The general concensus seems to be that these "hydrofoils" are a good idea-and relatively inexpensive as well.
In which case why dont manufacturers supply them as standard and/or make their cavitation plates bigger?
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Old 02 October 2002, 16:22   #10
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I have just bought a pair of Lalizas LZ-Gull Wing Hydrofoils which I hope to fit and test out this weekend. Will report back on the performance.
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