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Old 29 July 2015, 19:38   #51
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Country: UK - N Ireland
Boat name: Still deciding
Make: Avon Searider
Length: 4m +
Engine: Tohatsu M40C
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Posts: 92
And by the way...........

Thanks to everyone who replied. I would never have even known where to start without your feedback!
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Old 30 July 2015, 05:11   #52
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Country: UK - England
Town: York
Boat name: Rubber Johnny
Make: Avon Supersport 3.45
Length: 3m +
Engine: Mariner 40 2 stroke
Join Date: Jun 2015
Posts: 98
it is noticeable how much of a difference they make. my little avon 3.5 rib is slightly over engined (rated at 30hp) with a 40hp on it so tends to sit stern heavy (especially on a longer run when i have 52 litres of fuel strapped down in front of the transom) but the fins lift her backside up, runs alot more steady and flat with none of the chine riding it used to have. imo worth every penny and in my case no real loss of top end worth noting. i still get a reliable 35kts over the ground against the tidal flow and a real nice steady cruise of 20-23kts while sipping fuel like a teetotal nun.
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Old 30 July 2015, 14:59   #53
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Country: UK - England
Town: Bournemouth
Boat name: Seadrive
Make: Capelli Tempest 470
Length: 4m +
Engine: Suzuki DF70
MMSI: 235079113
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Posts: 540
Quote:
Originally Posted by berkorib View Post
The hydrofoils create drag.
I think the drag they create in air is minimal
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Old 03 August 2015, 08:12   #54
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Country: UK - England
Length: 4m +
Engine: 60 hp Outboard
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I think the drag they create in air is minimal
Try an S/S prop for get up and go!! - I had good success with Steel Development, London
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Old 06 August 2015, 18:59   #55
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Quote:
Originally Posted by berkorib View Post
Try an S/S prop for get up and go!! - I had good success with Steel Development, London

I've got a SS prop and quite honestly noticed little or no difference from the stock aluminium prop!
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Old 06 August 2015, 21:18   #56
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Country: Australia
Town: Dalmeny
Make: zodiac
Length: 5m +
Engine: outboard
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Quote:
Originally Posted by longjohn View Post
I've got a SS prop and quite honestly noticed little or no difference from the stock aluminium prop!
Ive had exactly the same results from yamaha aloy and stainless, same cruise and top speed. Not saying all props are the same pitch for pitch but modern aluminium props have come a long way.

Jon
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Old 07 August 2015, 05:22   #57
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A change to an S/S prop from 'Steel developments' worked for me.
I wanted more punch to pull wakeboarders out and a better top speed.
I regularly swap to the old aluminium prop from the S/S and vice versa because when cruising in shallow rivers etc I don't want to damage the S/S one. Notwithstanding that, the only two times I've damaged a prop, it was the S/S one!!
When changing them the difference is noticeable - it maybe just my boat engine setup suits the S/S prop.
Going back to Hydrofoils - I tried them when I first got the boat new, because I was sometimes struggling to pull waterskiers up (took me a week to pluck up the courage to drill the holes in the new engine cavitation plate!!). They got me onto the plane quicker but didn't help the pulling. Also the top speed was only 26 mph (2 up) vs 30 mph plus with the ali prop alone. Now with the S/S prop the boat will do 35 mph 3 up with all the skiing gear.
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