gjgm
Well-Known Member
fuel consumption and servicing bills will be lower i guess, but what else do i need to think about ?
pros/cons single engine on 28 ft?
- Thread starter gjgm
- Start date
Nick_H
Well-Known Member
getting home when the engine breaks down
DavidJ
Well-Known Member
Handling is so much easier with two engines. I was amazed at the difference with a twin.
Callisto
Well-Known Member
Can you fix it at sea? You need to carry all the breakable/blockable bits etc.
How far offshore do you want to go and could a decent auxiliary O/B get you home.
Manouvreability will be easier with twin but all the items you list such as lower costs etc come into play and offset this if you are good with a single.
How old is the engine and what is likely to be getting close to the end of its life. If in doubt, replace it or carry a spare that you can fit at sea.
Do you go out mostly in company and could get a tow if the worst happens or if you go out solo whats your contingency plan.
Just a few thoughts to be going on with.
Cheers
JH /forums/images/graemlins/cool.gif
How far offshore do you want to go and could a decent auxiliary O/B get you home.
Manouvreability will be easier with twin but all the items you list such as lower costs etc come into play and offset this if you are good with a single.
How old is the engine and what is likely to be getting close to the end of its life. If in doubt, replace it or carry a spare that you can fit at sea.
Do you go out mostly in company and could get a tow if the worst happens or if you go out solo whats your contingency plan.
Just a few thoughts to be going on with.
Cheers
JH /forums/images/graemlins/cool.gif
Its_Only_Money
Well-Known Member
[ QUOTE ]
How old is the engine...If in doubt...carry a spare that you can fit at sea./quote]
What, fitted alongside with a leg ready to use??? /forums/images/graemlins/laugh.gif
How old is the engine...If in doubt...carry a spare that you can fit at sea./quote]
What, fitted alongside with a leg ready to use??? /forums/images/graemlins/laugh.gif
Callisto
Well-Known Member
Nice one Simon. Knew you would pick up the little slip. I meant the bits that are wearing out etc not the whole engine and leg. /forums/images/graemlins/grin.gif
Mind you my new boat has got a whole spare engine and leg fitted alongside the main engine..........oh........just realised.......thats why its called a twin.......do I have to use them together cos I'm so used to a single now two levers means I got to think more.
Have to ask Solitaire if steer before gear still applies cos I thought I could forget about steering now /forums/images/graemlins/grin.gif
Thanks for the post on the FOC too.
Cheers
JH /forums/images/graemlins/cool.gif
Mind you my new boat has got a whole spare engine and leg fitted alongside the main engine..........oh........just realised.......thats why its called a twin.......do I have to use them together cos I'm so used to a single now two levers means I got to think more.
Have to ask Solitaire if steer before gear still applies cos I thought I could forget about steering now /forums/images/graemlins/grin.gif
Thanks for the post on the FOC too.
Cheers
JH /forums/images/graemlins/cool.gif
[2068]
...
Have been thinking about same problem:
Big Singles like VP D6-350's are all cast iron, heavy build. Better performance and lower fuel consumption, but not by miles. Even these are "parent bore" (no replaceable cylinder liners), so if you trash one cylinder, it's big bill time. Prefer the look of the latest DP-H drive and the sexy nibral propellors. All eggs in one (bigger, sturdier, cast iron) basket.
Latest small D3's are converted car engines with aluminum blocks, which are fine, so long as you never suffer an overheat /forums/images/graemlins/shocked.gif Latest D3-190 looks to have a really good power-to-weight ratio. DP-S drive been around a bit (mainly used on petrols, smaller transom cutout). Eggs evenly distributed between two aluminium baskets.
My logic was that if I wanted to offshore a lot (e.g. France, Channel Isles), then twins would be the way to go (for redundancy, half way across the channel is a lonely place to stop). For blatting up and down the Solent and down to Poole, probably a single would be my choice.
All in my humble opinion, of course.
Big Singles like VP D6-350's are all cast iron, heavy build. Better performance and lower fuel consumption, but not by miles. Even these are "parent bore" (no replaceable cylinder liners), so if you trash one cylinder, it's big bill time. Prefer the look of the latest DP-H drive and the sexy nibral propellors. All eggs in one (bigger, sturdier, cast iron) basket.
Latest small D3's are converted car engines with aluminum blocks, which are fine, so long as you never suffer an overheat /forums/images/graemlins/shocked.gif Latest D3-190 looks to have a really good power-to-weight ratio. DP-S drive been around a bit (mainly used on petrols, smaller transom cutout). Eggs evenly distributed between two aluminium baskets.
My logic was that if I wanted to offshore a lot (e.g. France, Channel Isles), then twins would be the way to go (for redundancy, half way across the channel is a lonely place to stop). For blatting up and down the Solent and down to Poole, probably a single would be my choice.
All in my humble opinion, of course.
smurfer
Well-Known Member
Re: pros/cons single engine on 28 ft?
Talking to the Volvo Penta service guys and the local life boat station before I made the decision to go single, I was told most breakdowns are quality of fuel related and they effect both engines or running out of fuel, when crossing the channel I must admit that it is on my mind, but then I am only forty miles from help if things go wrong!
But the VP 350D6 has never missed a beat and fuel economy is great.
Talking to the Volvo Penta service guys and the local life boat station before I made the decision to go single, I was told most breakdowns are quality of fuel related and they effect both engines or running out of fuel, when crossing the channel I must admit that it is on my mind, but then I am only forty miles from help if things go wrong!
But the VP 350D6 has never missed a beat and fuel economy is great.
Mirelle
N/A
Think merchant ship
They are all single engine, from the smallest coaster to the largest tanker and the fastest containership, unless they need to be shallow draft.
Reason: fuel efficiency.
At present prices, and with red diesel under threat, a point to consider.
As has been said, most problems are fuel related, and would affect both engines.
A Seagull Century will get you home, "in the unlikely event" .
They are all single engine, from the smallest coaster to the largest tanker and the fastest containership, unless they need to be shallow draft.
Reason: fuel efficiency.
At present prices, and with red diesel under threat, a point to consider.
As has been said, most problems are fuel related, and would affect both engines.
A Seagull Century will get you home, "in the unlikely event" .
meows
Member
Re: Think merchant ship
If you have one and your life may depend on it, you look after it very carefully. With 2 you always think you have the other one to get you home. But will it?
Most breakdowns at sea are fuel related, so spend your money on super filters and water seperators instead of another engine.
Oh and a good radio!
If you have one and your life may depend on it, you look after it very carefully. With 2 you always think you have the other one to get you home. But will it?
Most breakdowns at sea are fuel related, so spend your money on super filters and water seperators instead of another engine.
Oh and a good radio!
Elessar
Well-Known Member
other pros of single not mentioned:
you can get around the engine to maintain it well. Can be nigh on impossible in some twins on a small boat.
storage space for boating paraphernalia outboard of the engine.
you can get around the engine to maintain it well. Can be nigh on impossible in some twins on a small boat.
storage space for boating paraphernalia outboard of the engine.
Its_Only_Money
Well-Known Member
[ QUOTE ]
Thanks for the post on the FOC too.
[/ QUOTE ]
Well deserved - how DO you get that shine in the hull???? (I expect you put a lot more effort into it than I do for starters /forums/images/graemlins/laugh.gif
Thanks for the post on the FOC too.
[/ QUOTE ]
Well deserved - how DO you get that shine in the hull???? (I expect you put a lot more effort into it than I do for starters /forums/images/graemlins/laugh.gif
Callisto
Well-Known Member
Its a deal I have with Mr Farecla and Mr International.
G3 and a power mop till i can see my face in it then about 3 coats of international Polwax before it goes anywhere near the water.
As soon as I'm back in from sea, a top to bottom washdown with fresh water to get the salt off.......not that I'm fussy or anything /forums/images/graemlins/laugh.gif
Put a sign on her in the marina yesterday, got a call today and a viewing on Saturday. May have a second from a guy in wales who is looking for a boat no bigger than 7m. I'd say that fits the Sprint perfectly. Just hope she sells now /forums/images/graemlins/crazy.gif
Been at the Falcon with the G3 already......she'll come up OK. Not given it the full JH "breathing on" yet but when I do, expect her to be as good as Callisto!!
Cheers mate
JH /forums/images/graemlins/cool.gif
G3 and a power mop till i can see my face in it then about 3 coats of international Polwax before it goes anywhere near the water.
As soon as I'm back in from sea, a top to bottom washdown with fresh water to get the salt off.......not that I'm fussy or anything /forums/images/graemlins/laugh.gif
Put a sign on her in the marina yesterday, got a call today and a viewing on Saturday. May have a second from a guy in wales who is looking for a boat no bigger than 7m. I'd say that fits the Sprint perfectly. Just hope she sells now /forums/images/graemlins/crazy.gif
Been at the Falcon with the G3 already......she'll come up OK. Not given it the full JH "breathing on" yet but when I do, expect her to be as good as Callisto!!
Cheers mate
JH /forums/images/graemlins/cool.gif
whisper
Well-Known Member
When you've done that can you nip down the road and do mine please. I've left it against the quay wall and there's a tap handy /forums/images/graemlins/wink.gif
