Broaching

[jaybee]

I had the stingray it was on the motor when I bought it .. I see your profile is mackay was going to suggest you could borrow it to try and if it worked prob sell it for $40.. mine was designed to bring the bow down..try this site http://www.familyboats.com.au/accesory/stingray.html they were very helpful and suggested a few things but most important was a reputable dealer who knows the products..the stingray comes in 3 distinct shapes from memory.
cheers.

[MickSA]

Do you think a Permatrim would help or hinder ???

[jaybee]

All I can say is trial and error Mick..i was advised to see a propellor specialist and have a talk to them first..some not all know of the hydrofoils and can recommend which one to use. i was advised
1. Foil Change
2. Wedging
3. Engine height adjustment
4. New prop

However it all costs money my third phone call i spoke to a prop specialist he said take the foil off if you still have problems then come and see..but I dont think you will have too. My foil is designed to bow down which left the stern too high in a following sea..on a good day it was great, going into the sea trimmed out wasnt too bad..but get the sea up ya stern and look out ..
cheers.

[SteveCan]

Hi Jaybee,

After reading this post I decided to take the foil off my Sportsmanscraft today. Yesterday we went about 10km north of Tweed with the foil on and we did the same trip today.

I was amazed at the diference - can't believe I haven't tried it before. The boat handled far better when cornering in flatwater and felt heaps better going through the 1 metre seas outside today with the south easterly on it.

It's really cool to get new ideas from a site like this and get an improvement in your experience.

Cheers
Steve.

[jaybee]

Thanks for the reply steve..its good to hear from other people that have been having the same problem and they give positive feedback.
cheers.

[Bill_Corten]

Jaybee
The best prop man in Brisbane is Colin Lough at Performance Propellers, Bulimba. Ph 3899 1501
Personally I think those stingray type hydrofoils work well on some boats, especially when it comes to improving the ride in a head sea. The trade off comes with diminished performance in a choppy following sea, with broaching occuring more easily. It seems that even with the engine trimmed further out, the effect of the hydrofoil is to still make the bow ride too low in a following sea which sounds like what you have been experiencing.
Anyhow only an expert like Col will be able to tell you whether the double cupping will be worthwhile. Please keep me informed.

Cheers
Bill Corten

[jaybee]

Thanks bill have made a note of the name and phone..my problem was solved the minute i took the foil off..was out in the mouth of the river in 20 plus knots a few weeks ago..conditions were very much if not worse then when i was off mooloolaba..tried everything to get the boat on its side.. my deckie was not happy jan..didnt happen..feedback from stingray suggest there are 3 foils for different jobs..i can live without one after the experience i had..however i have noticed an increase in fuel comsumption without it..thats life eh.
cheers.

[Kerry]

Really foils can be down right dangerous on some boats (and especially cats).

There appears simply too much hoohah from some foil manufacturers in that these things are supposed to fix all problems, which of course they don't.

Cheers, Kerry.