Boatmad.com


Reply
 
Thread Tools Display Modes
 
Old 07-05-2007, 07:50 AM   #1
Senior Member
 
Country: England
Location: Watford
Occupation: Private Hire Company
Interests: Boats Cars women and wine
Boat name: The Bandit & The Bandit1
Boat make: Revenger San Marino & Hunton Rib
Engines: For sale Twin 225 Opti's
Cruising area: The Solent

Join Date: Mar 2006
Location: Watford
Posts: 298
Triple Outboards

Can you run different HP when running Triples and as the V shape on the hull different length legs. Say a longer leg for the middle engine.
__________________

the bandit is offline   Reply With Quote
Old 07-05-2007, 01:27 PM   #2
Registered User
 
Burty's Avatar
 
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer

Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
Send a message via AIM to Burty
I know you can run different length legs but wouldn't have thought you can run different power
__________________

Burty is offline   Reply With Quote
Old 07-05-2007, 04:14 PM   #3
Large member
 
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med

Join Date: May 2005
Location: On the farm
Posts: 2,681
I would have thought a shorter leg in the middle......

And I would guess you can run different HP if you match the prop speeds etc...
verytricky is offline   Reply With Quote
Old 07-05-2007, 05:45 PM   #4
Traveling
 
Country: UK
Location: Alderholt
Occupation: Aerospace
Boat name: T/T D2S
Boat make: Midas 27' Cat, Argo 16 Cat. Avon Rib Thingy
Engines: Merc 280-ROS -JSRE,65Xs, 75 Stinger, Yam 60
Cruising area: Any Seedy Bar

Join Date: Sep 2004
Location: Alderholt
Posts: 4,223
Uniflow- Phantom 23' twin rig think it was 2x 175 with a 65 merc in the middle took it right up to the class limit. might have been 140's cant recall, longer shaft in the middle unless you are using a remote water pick up.

Tiger Tiger though twins was a 235 one side & a 140 or 150 the other - merc/ johnnyrude mix
__________________
It is impossible to lick your elbow.

Team25Racing.com

At least 75% of people who read this will try to lick their elbow!
BluFin is offline   Reply With Quote
Old 07-05-2007, 06:26 PM   #5
Senior Member
 
Country: netherlands
Location: Mijdrecht/holland
Occupation: truck repair
Interests: fast boats/porches
Boat name: bernico cat
Boat make: bernico 26 cat 2x 2,5,s
Engines: merc,s 2,5 EFI,s
Cruising area: ijselmeer

Join Date: Dec 2005
Location: Mijdrecht/holland
Posts: 382
different engines

You can use different horsepower engines if you want ,I used a 225 promax merc and a 200 EFI on a 21 Bernico some time ago.
I had only 100 rpm difference in top rpm,and when accelerating ,the strongest will pull the weakest easy ,so you will not notice any if not watch the rpm gauge.

sterling
sterling is offline   Reply With Quote
Old 07-05-2007, 09:29 PM   #6
Senior Member
 
Country: England
Location: Watford
Occupation: Private Hire Company
Interests: Boats Cars women and wine
Boat name: The Bandit & The Bandit1
Boat make: Revenger San Marino & Hunton Rib
Engines: For sale Twin 225 Opti's
Cruising area: The Solent

Join Date: Mar 2006
Location: Watford
Posts: 298
Thanks for the info. How would 250 on the outsides with a 225 in the middle with the longer leg in the middle to compensate the V in the hull sound.
the bandit is offline   Reply With Quote
Old 07-05-2007, 09:44 PM   #7
Senior Member
 
Country: netherlands
Location: Mijdrecht/holland
Occupation: truck repair
Interests: fast boats/porches
Boat name: bernico cat
Boat make: bernico 26 cat 2x 2,5,s
Engines: merc,s 2,5 EFI,s
Cruising area: ijselmeer

Join Date: Dec 2005
Location: Mijdrecht/holland
Posts: 382
engines

What sort engines ?
both have to be based on the same sort engines,for example if you are using 250 EFI,,s mercs 3,0L and a 225 EFI 3,0L in the center ,it wil be ok.
if you are using a 250 3,0L EFI,s outside ,and a 225 promax 2,5 L in the center,it will not run properly ,as these are completely different in blocks ,torque ,rpm,range and gear ratio.

sterling
sterling is offline   Reply With Quote
Old 07-05-2007, 09:48 PM   #8
Senior Member
 
Country: England
Location: Watford
Occupation: Private Hire Company
Interests: Boats Cars women and wine
Boat name: The Bandit & The Bandit1
Boat make: Revenger San Marino & Hunton Rib
Engines: For sale Twin 225 Opti's
Cruising area: The Solent

Join Date: Mar 2006
Location: Watford
Posts: 298
Blocks will all be 3.0l
the bandit is offline   Reply With Quote
Old 07-05-2007, 10:16 PM   #9
Senior Member
 
Country: netherlands
Location: Mijdrecht/holland
Occupation: truck repair
Interests: fast boats/porches
Boat name: bernico cat
Boat make: bernico 26 cat 2x 2,5,s
Engines: merc,s 2,5 EFI,s
Cruising area: ijselmeer

Join Date: Dec 2005
Location: Mijdrecht/holland
Posts: 382
I assume your blocks are mercs?
If so, your be fine ,if the engine,s are 3,0L 250 and 225 EFI,s you have a great set up,converting to 250 is easy ,you can open up the 2 butterflies,and send your ecu,s to the US,and modify them to 250 specs.

These 3,0 L are very dependable,very good power /torque,my favorites back then,wish merc made them in 20 inch left and right.

sterling
sterling is offline   Reply With Quote
Old 07-05-2007, 11:07 PM   #10
Registered User
 
Country: UK
Location: Swansea
Occupation: Computer Director
Interests: Anything with an engine
Boat name: Too Blue
Boat make: RIB 9m
Engines: Suzuki 225efi
Cruising area: Bristol Channel/Irish Sea

Join Date: May 2005
Location: Swansea
Posts: 101
What you want in the middle is the Yamaha duo prop outboard - the only outboard I know of with contra rotating props!
codprawn is offline   Reply With Quote
Old 07-05-2007, 11:28 PM   #11
Registered User
 

Join Date: Mar 2004
Posts: 6,862
Is it still in production? Thought it had been dropped.
The merc deuce high would be an interesting choice.
Attached Thumbnails
Click image for larger version

Name:	cod.jpg
Views:	221
Size:	41.1 KB
ID:	12641  
Matt is offline   Reply With Quote
Old 08-05-2007, 06:33 AM   #12
Senior Member
 
Country: netherlands
Location: Mijdrecht/holland
Occupation: truck repair
Interests: fast boats/porches
Boat name: bernico cat
Boat make: bernico 26 cat 2x 2,5,s
Engines: merc,s 2,5 EFI,s
Cruising area: ijselmeer

Join Date: Dec 2005
Location: Mijdrecht/holland
Posts: 382
I thought the yam duo prop was out for a while.

But you don,t have to bother with 1 extra rh turning prop in the center ,you won,t notice that with a triple set up.

I have had triple and quad set up ,and always found difficult to find trim position to be equal,cause trim speed isn,t always the same.

sterling
sterling is offline   Reply With Quote
Old 08-05-2007, 12:51 PM   #13
Registered User
 
Country: UK
Location: Swansea
Occupation: Computer Director
Interests: Anything with an engine
Boat name: Too Blue
Boat make: RIB 9m
Engines: Suzuki 225efi
Cruising area: Bristol Channel/Irish Sea

Join Date: May 2005
Location: Swansea
Posts: 101
Quote:
Originally Posted by Matt View Post
Is it still in production? Thought it had been dropped.
The merc deuce high would be an interesting choice.
That's a new one on me.
codprawn is offline   Reply With Quote
Old 08-05-2007, 09:26 PM   #14
Registered User
 
RossM's Avatar
 
Boat make: Phantom 23

Join Date: Mar 2006
Posts: 1,650
Send a message via MSN to RossM
Quote:
Originally Posted by Matt View Post
Is it still in production? Thought it had been dropped.
The merc deuce high would be an interesting choice.
WOW
Thats Awesome!!!!
Any more info?
RossM is offline   Reply With Quote
Old 08-05-2007, 09:42 PM   #15
Registered User
 

Join Date: Mar 2004
Posts: 6,862
IIRC 2 speed gearbox (in the mid) and removeable skeg.
The blackhawk drive is another "cool thing"
Matt is offline   Reply With Quote
Old 08-05-2007, 10:08 PM   #16
Registered User
 
RossM's Avatar
 
Boat make: Phantom 23

Join Date: Mar 2006
Posts: 1,650
Send a message via MSN to RossM
Quote:
Originally Posted by Matt View Post
IIRC 2 speed gearbox (in the mid) and removeable skeg.
The blackhawk drive is another "cool thing"
Google doesn't show anything for blackhawl drive, any more keywords i could try?
and that merc is awesome!
do they make them still?
RossM is offline   Reply With Quote
Old 08-05-2007, 10:11 PM   #17
Registered User
 

Join Date: Mar 2004
Posts: 6,862
spellnig it right would be a start.
Matt is offline   Reply With Quote
Old 08-05-2007, 10:16 PM   #18
Registered User
 
RossM's Avatar
 
Boat make: Phantom 23

Join Date: Mar 2006
Posts: 1,650
Send a message via MSN to RossM
Quote:
Originally Posted by Matt View Post
spellnig it right would be a start.
Good one to criticise lol
Yeh i did spell it rite, well I copied and pasted from you
RossM is offline   Reply With Quote
Old 08-05-2007, 10:18 PM   #19
Registered User
 

Join Date: Mar 2004
Posts: 6,862
I don't think so since I speleld it right.
I bet you searched for mercury blackhawk.
Try mercruiser blackhawk
Matt is offline   Reply With Quote
Old 08-05-2007, 10:22 PM   #20
Registered User
 
RossM's Avatar
 
Boat make: Phantom 23

Join Date: Mar 2006
Posts: 1,650
Send a message via MSN to RossM
Quote:
Originally Posted by Matt View Post
I don't think so since I speleld it right.
I bet you searched for mercury blackhawk.
Try mercruiser blackhawk
Nope i searched for "blackhawk drive" as you said lol
then "blackhawk drive boat"
then "blackhawk drive racing"

i will give "mercruiser blackhawk" a try

Now that youve sold Distant rumble, what you gona do about boating this year?
have you got any other boats?
__________________

RossM is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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


Powered by vBadvanced CMPS v3.2.3

All times are GMT +1. The time now is 03:53 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×