Reply
 
Thread Tools Search this Thread
 
Old 13 December 2013, 11:41   #11
Member
 
Country: Other
Length: no boat
Join Date: Nov 2012
Posts: 463
Quote:
Originally Posted by Trimix View Post
Looking at their website it seems they just plonked a massive engine into it without much in the way of real engineering.

Id like to see a supercharged block, vertically - so there is no need for large gearing to change the torque from the horizontal to the vertical.

The US engine builders always seems to need a very large capacity to come up with horsepower, whereas the UK / Europeans / Japs get more horsepower for smaller capacity.
Not so TRIMIX - you will see in the tech analysis posted that the chief techies at Mercury who developed the Optimax and the Verado are responsible for the design. Very expensive engines - but well engineered I would suspect looking at who is involved. Would love to try one.
__________________

__________________
indaba1991 is offline   Reply With Quote
Old 13 December 2013, 11:46   #12
Member
 
Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
So...is that 557 at the block..reduced to what at prop?

I'm right in thinking other new engines are hp at prop?

How many of the 557 are lost turning the super charger and gears in the box?
__________________

__________________
PeterM is offline   Reply With Quote
Old 13 December 2013, 11:54   #13
Member
 
Country: Other
Length: no boat
Join Date: Nov 2012
Posts: 463
Quote:
Originally Posted by PeterM View Post
So...is that 557 at the block..reduced to what at prop?

I'm right in thinking other new engines are hp at prop?

How many of the 557 are lost turning the super charger and gears in the box?
That's a question I posed on their web forum Peter - am awaiting a reply. There must be some loss in the transmission - but with 500+ HP you can afford to lose a bit! There are some very good guys involved in the project and I think (like the Verado) we are seeing a new generation style power unit evolving. It is so expensive however one has to question any viable market.
__________________
indaba1991 is offline   Reply With Quote
Old 13 December 2013, 12:06   #14
Member
 
Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
Yep..the USA market may benefit as they seem to like daft amounts of power on the back.

I've not looked what it's weight is compared to say a 300 verado...
__________________
PeterM is offline   Reply With Quote
Old 13 December 2013, 12:13   #15
Member
 
Country: Other
Length: no boat
Join Date: Nov 2012
Posts: 463
Quote:
Originally Posted by PeterM View Post
Yep..the USA market may benefit as they seem to like daft amounts of power on the back.

I've not looked what it's weight is compared to say a 300 verado...
Er - VERY HEAVY!

Verado 300 288kg
Seven 557 475kg

Need a strong transom!!
__________________
indaba1991 is offline   Reply With Quote
Old 13 December 2013, 12:58   #16
Member
 
Country: USA
Town: CA
Make: Zodiac RIB-P
Length: 7m +
Engine: Suzuki 250
Join Date: Aug 2010
Posts: 1,122
My brother has the Cadillac CTS-V with that motor in it and there isn't anything on the streets that can hang with it. It eats corvettes for lunch. It's frightening the torque that thing produces.

I do believe Seven is marketing to the 40'+ center console market where money is no issue and the benefit is that you can run 2x557 rather than 3x300 or 3x400. Money and weight are not an issue for those people and neither is the gas bill. I don't think they expect to sell to people like us.

If we start talking about English auto and HP I think this will get moved to the bilges I'll go dig up that I article I read a few years ago about how only the English could make a 4x4 that is under powered and get's bad gas mileage....

jason
__________________
Bigtalljv is offline   Reply With Quote
Old 13 December 2013, 13:42   #17
Member
 
Country: UK - Scotland
Town: Stornoway
Make: Scorpion 8.1 mk2
Length: 8m +
Engine: Yam F250 4.2 Litre
Join Date: Aug 2006
Posts: 193
$70,000 for one of those outboards I heard
__________________
Robbie Diesel is offline   Reply With Quote
Old 13 December 2013, 14:47   #18
Member
 
Boatnomad's Avatar
 
Country: Ireland
Make: Zodiac Mk I
Length: 3m +
Engine: 15 hp Yam two stroke
Join Date: Feb 2012
Posts: 728
Twin 557s with joystick control and LCD screen = $185,000, for the pair!
__________________
Boatnomad is offline   Reply With Quote
Old 13 December 2013, 15:25   #19
Member
 
Country: UK - England
Town: Bristol
Make: Ribcraft
Length: 5m +
Engine: Yamaha
Join Date: May 2006
Posts: 4,194
Quote:
Originally Posted by PeterM View Post
So...is that 557 at the block..reduced to what at prop?

I'm right in thinking other new engines are hp at prop?

How many of the 557 are lost turning the super charger and gears in the box?
approx 497 lost at the prop. which makes it a Yam 60!!
__________________
matt h is offline   Reply With Quote
Old 13 December 2013, 15:50   #20
Member
 
Country: UK - England
Boat name: Carpe Diem
Make: Ribeye 650S
Length: 5m +
Engine: Yamaha F150
Join Date: Oct 2012
Posts: 547
It sounds shhhhhhhhhhhhhh@t

Quote:
Originally Posted by Pikey Dave View Post
Sounds awful, like a whining toddler accompanied by a broken flask.
I am with Pikey Dave on this one, it sounds like somebody left a spanner in one of the cylinders
__________________

__________________
whackywoody 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 14:09.


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