Reply
 
Thread Tools Search this Thread
 
Old 23 November 2007, 09:39   #1
Member
 
Country: Other
Boat name: "can"
Make: Joker Boat
Length: 4m +
Engine: 40hp e-tec
Join Date: Feb 2007
Posts: 88
Stabilizer wings.

Hi all,
Do you have any idea about cons and pros of these aftermarket wings? Manufacturer claims better fuel economy (due to early planing) and higher speeds... It sounds logical if the engine elevates a step over these but is there anything that i can not think of?

__________________

__________________
memo is offline   Reply With Quote
Old 23 November 2007, 10:05   #2
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 10,113
Quote:
Originally Posted by memo View Post
Hi all,
Do you have any idea about cons and pros of these aftermarket wings? Manufacturer claims better fuel economy (due to early planing) and higher speeds... It sounds logical if the engine elevates a step over these but is there anything that i can not think of?

Is it these wings you want info about or "wings" in general? Search for dolefins and you should find something. There are lots of good reports - my gut feel though is if it worked in all situations then the engine manufacturer would just mould them into the casing.
__________________
Poly is offline   Reply With Quote
Old 23 November 2007, 10:10   #3
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
I don't think I saw any gain or loss in fuel consumption but they do give very noticeable pitch stability and, if you have two motors, they also provide roll stability. One wing on each outer antivent plate on a twin engine rig works quite well too.

I have fitted them to 3 engines and I found no downside to them.

They also provide a large step for you to climb into your boat.
__________________
JW.
jwalker is offline   Reply With Quote
Old 23 November 2007, 11:33   #4
Member
 
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,610
Personally I can't stand them! Last RIb (SR4 / Suz 25) had a pair - made next to no difference to the time to plane (and realistically what proportion of the day's entertainment do you actually spend in this state), and they knocked two knots off my top speed due to the drag!

I'll try to phrase this as scientifically as possible - Early planing will give you fuel economy if you pootle about at or around the "usually just off the plane" speed. Thing is at that speed in a rib, the hull will not have lifted fully out, so will still be shifting a lot of water out the way. With a shallow V this will be less of a problem If you cruise at that sort of speed in a lightweight boat, yeah, they probably do give you a small decrease, but whack your throttle open for 5 mins and the drag they create will more than compensate for the fuel you saved getting there!

As Polwart says, if they are so wonderful, and save so much fuel the OEMs would have jumped on this idea years ago. Also if you add lift to your engine that it was never designed to take, what is it doing to your tilt tube bearings and the material of your cav. plate, especially in a lumpy sea?

Personally, I've never had a good experience with them, and felt they dulled my boat's handling at speed. I'm sure someone will be along soon to counter my experiences with some positivity, but the ones that came with my boat are staying in the garage!
__________________
9D280 is offline   Reply With Quote
Old 23 November 2007, 13:19   #5
Member
 
Country: Other
Boat name: "can"
Make: Joker Boat
Length: 4m +
Engine: 40hp e-tec
Join Date: Feb 2007
Posts: 88
I think i will not put them in Thanks for all the input.
__________________
memo is offline   Reply With Quote
Old 23 November 2007, 13:51   #6
Member
 
Country: UK - England
Town: southampton
Boat name: Time Flies
Make: Humber ocean pro 6.3
Length: 6m +
Engine: volvo D3
Join Date: Sep 2004
Posts: 31
I have them on my S R 5.4 they do help lift and they do keep the boat more stable at high speed but no better on fuel econ and haven't noticed any loss of speed. Will say that i have blocked the holes up on the hull and i have a heavy engine (yamaha f80) i wouldn't fit them if i had a 2 stroke.
chris p
__________________
chris p is offline   Reply With Quote
Old 23 November 2007, 15:02   #7
Member
 
Country: UK - England
Town: Midlands
Make: Nautique
Length: 6m +
Engine: PCM 5.7l
Join Date: Oct 2003
Posts: 1,082
We put them on ours and really rate them. Possibly lost 1-2knots off the top speed but it planes quicker, is more responsive to the trim and just nicer to drive.
H
__________________
simmons0 is offline   Reply With Quote
Old 23 November 2007, 16:46   #8
Member
 
Nasher's Avatar
 
Country: Other
Town: Principalite d'Chaos
Boat name: The Nashers Revenge!
Make: Ocean & Bombard
Length: 6m +
Engine: Suzi DT200EFI, DT9.9
MMSI: "Mmmmm SI" she said!
Join Date: Jan 2004
Posts: 4,147
I put a 55HP triple Suzuki on the back of my Flatacraft Force 4 a few years back.

First time out it was all over the place. On flat water hardly any of the boat was in the water, and it was dangerously unstable.
I put a set of Dole fins on and it was great. Straight up out of the hole, cornered well, and as stable as any 12foot deep V with a 55 on is ever going to be.

Nasher
__________________
RIBBED For extra pleasure.
Member of the ebay Blue RIB cover club.
Member of the Bombard 380 Aerotec club
Nasher is offline   Reply With Quote
Old 23 November 2007, 19:02   #9
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 10,113
Quote:
Originally Posted by memo View Post
I think i will not put them in Thanks for all the input.
I would certainly rate JW, Simmons0 and Nashers opinion above mine - especially since they have used them. The downside I see is that you have to drill you cav plate to try them - it is fairly permanent - it would be nice if there was a "try it first" option.
__________________
Poly is offline   Reply With Quote
Old 24 November 2007, 02:09   #10
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
I used them on a cabin cruiser and they were downright dangerous-they sent the boat all over the place.

They work for some but don't for others. If your boat works well without I'd personally leave them alone.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 13:14.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.