|
16-03-2019, 08:47 AM
|
#1
|
Registered User
Country: uk
Occupation: Diamond/Jewellery/Rolex dealer
Boat name: Beyond Obsession
Boat make: P25
Engines: merc 2x200XS SSROS
Cruising area: solent/altea
Join Date: Mar 2008
Posts: 311
|
Twins vs single motors
Just a question i was asking myself.
What are the advantages/ disadvantages of twin motors or singles and why twins these days.I can understand i years gone by when motors were not pushing so much hp out so a couple or 3 were required but now we get to 400hp single surely the gain must be in a single set up with less weight .
I am sure there will be a lot of different views on this .
Cheers
__________________
|
|
|
16-03-2019, 05:21 PM
|
#2
|
Registered User
Country: Uk, sometimes Dubai
Location: Newmarket, Suffolk
Occupation: Racehorse Exercise Rider
Interests: Powerboating, Squash, Running, Horseracing
Boat name: FAT BOY
Boat make: Cougar 27'
Engines: EVINRUDE G2 300
Cruising area: Orwell, Harwich, East Coast
Join Date: Sep 2012
Location: Newmarket, Suffolk
Posts: 244
|
Quote:
Originally Posted by nick1
Just a question i was asking myself.
What are the advantages/ disadvantages of twin motors or singles and why twins these days.I can understand i years gone by when motors were not pushing so much hp out so a couple or 3 were required but now we get to 400hp single surely the gain must be in a single set up with less weight .
I am sure there will be a lot of different views on this .
Cheers
|
I'm no expert but I think the biggest gain with running a twin setup has to be the handling with the 2 props counter rotating against each other and eliminating possible prop torque with a single setup, as you said, you can now bolt on up to a 400 on a boat like yours, there is a guy in Norway with a P25 running a 400r which previously ran as a double setup at sometime during its life, he posted on here with various results with engine heights & props etc. with the 400r with very good results in all areas.
__________________
|
|
|
16-03-2019, 05:26 PM
|
#3
|
Registered User
Country: Uk, sometimes Dubai
Location: Newmarket, Suffolk
Occupation: Racehorse Exercise Rider
Interests: Powerboating, Squash, Running, Horseracing
Boat name: FAT BOY
Boat make: Cougar 27'
Engines: EVINRUDE G2 300
Cruising area: Orwell, Harwich, East Coast
Join Date: Sep 2012
Location: Newmarket, Suffolk
Posts: 244
|
Quote:
Originally Posted by nick1
Just a question i was asking myself.
What are the advantages/ disadvantages of twin motors or singles and why twins these days.I can understand i years gone by when motors were not pushing so much hp out so a couple or 3 were required but now we get to 400hp single surely the gain must be in a single set up with less weight .
I am sure there will be a lot of different views on this .
Cheers
|
http://www.boatmad.com/forum/f3/phan...00r-29810.html
Take a read of this, the guy in Norway I mentioned earlier...
|
|
|
16-03-2019, 10:24 PM
|
#4
|
Registered User
Country: uk
Occupation: Diamond/Jewellery/Rolex dealer
Boat name: Beyond Obsession
Boat make: P25
Engines: merc 2x200XS SSROS
Cruising area: solent/altea
Join Date: Mar 2008
Posts: 311
|
Twins vs single
Thanks for the info very informative .But i do think that sounds like a set up for glass flat water in a bang straight line .It looks like a single engine definitely quicker under these conditions.But what in real sea conditions is there any advantage of twins .When you think twice the cost ish twice the fuel just double everything except hull.
|
|
|
19-03-2019, 03:47 PM
|
#5
|
Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
|
your P25 with a single 300 will be just as fast and easy to handle if setup right as it is with your twins, will also be a lot less hassle to maintain and cheaper to run however they don't look or sound as cool
|
|
|
19-03-2019, 05:38 PM
|
#6
|
Registered User
Country: uk
Occupation: Diamond/Jewellery/Rolex dealer
Boat name: Beyond Obsession
Boat make: P25
Engines: merc 2x200XS SSROS
Cruising area: solent/altea
Join Date: Mar 2008
Posts: 311
|
Twins
Blimey bloody expensive to sound nice a look good. 😂
|
|
|
20-03-2019, 01:08 AM
|
#7
|
Registered User
Country: Sweden
Location: Stockholm, Sweden
Occupation: Advertising Angency
Interests: Boats n Bee...
Boat make: Activator 32 1x1095hp SSM#VI
Engines: Chevy by W&E 572ci
Cruising area: Stockholm, baltic sea
Join Date: Jan 2005
Location: Stockholm, Sweden
Posts: 266
|
Did not manage to test this Activator yet that we rigged fall 2018. Looking forward to the test together with the owner. First and only Swede built Activator with twin setup. Activator 28OR Seamless.
|
|
|
20-03-2019, 08:19 AM
|
#8
|
Registered User
Country: uk
Occupation: Diamond/Jewellery/Rolex dealer
Boat name: Beyond Obsession
Boat make: P25
Engines: merc 2x200XS SSROS
Cruising area: solent/altea
Join Date: Mar 2008
Posts: 311
|
Twins vs singles
Beautiful.But will that not be very rear end heavy.?
|
|
|
21-03-2019, 11:28 PM
|
#9
|
Registered User
Country: Sweden
Location: Stockholm, Sweden
Occupation: Advertising Angency
Interests: Boats n Bee...
Boat make: Activator 32 1x1095hp SSM#VI
Engines: Chevy by W&E 572ci
Cruising area: Stockholm, baltic sea
Join Date: Jan 2005
Location: Stockholm, Sweden
Posts: 266
|
Quote:
Originally Posted by nick1
But will that not be very rear end heavy.?
|
I hope so. Then the owner can use the 350 litre ballast tank more frequently
It has also A built in 450 litre gas tank placed in center of the boat.
__________________
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
All times are GMT +1. The time now is 06:40 PM.