Cost risk of older diesel engined boat?

[ari]

If you dig deeper, it seems that many engine failures in twins end up with a safe landing and so aren't reported as accidents. The other issue is that twins are usually flown in less safe conditions - at night, over mountains etc. which increases the risk of an engine out crash. Singles with an engine failure are usually flown in daylight where a safe landing spot can be identified more easily.

Being able to manage an engine out situation is also an issue with pilots and circumstances such as an engine failure during takeoff can be fatal.

These things usually benefit from a look behind the headline, statistics are often extremely misleading.

Let's be honest, there's no way that commercial airlines would be using twin engined aircraft if single engined ones were safer. Plus, obviously they're not safer!

Let's take this particular statistic to the extreme though, just for fun. Zero engined self propelled aeroplanes are statistically the safest of all. If you remove all the engines from an Arbus A380, you'll have the safest aircraft in the world! (Provided it's not in flight when you do it...)

 

[gromit83]

Well. My 20 year old KAD32 probably just puked a piston ring and that is after it got a new turbo and exhaust elbow last year. And two years before that it got a new headgasket with planed top and everything. Buying anything old is a serious risk no matter how well maintained. Be prepared that everything can go into the shitter with an old engine.

Repower probably to costly for such an old boat and a "reman" KAD32 isnt cheap either. I'm pretty fed up with Pentas right now. Only been a nightmare ownership.

 

[Bouba]

Well. My 20 year old KAD32 probably just puked a piston ring and that is after it got a new turbo and exhaust elbow last year. And two years before that it got a new headgasket with planed top and everything. Buying anything old is a serious risk no matter how well maintained. Be prepared that everything can go into the shitter with an old engine.

Repower probably to costly for such an old boat and a "reman" KAD32 isnt cheap either. I'm pretty fed up with Pentas right now. Only been a nightmare ownership.

Sorry to hear about your troubles.....repowering with an outboard is so much easier....boat engines don’t do a lot of hours but they still have a hard life...always pushing hard....often running well below their intended revs....running cooler than originally specified....and living in the North Sea.

 

[Hot Property]

Sorry to hear about your troubles.....repowering with an outboard is so much easier....boat engines don’t do a lot of hours but they still have a hard life...always pushing hard....often running well below their intended revs....running cooler than originally specified....and living in the North Sea.

I guess another advantage of an outboard is that it's much less susceptible to light loads.

Unless just trolling at 3 knots all day, they really don't care what speed they are doing.

2 stroke outboards are not as forgiving. Higher powered ones are rare these days due to prodigious fuel burn....

 

[aerobat]

I read on an aviation web-site that for private aircraft, twin engined aircraft crash more often than single engined aircraft. The second engine is only there to propel you to the crash site.

And of course with two engines you will have one engine fail twice as often as in a single engined aircraft.

As a commercial pilot flying for a living my whole life i can tell you that this is mostly a myth with indeed some thruth in it .

Basicly any properly handled twin is safer than a single .

Problem is that small , piston engine powered twins are often flown with pilots who lack the training and experience to handle a real engine failure , e.g control the yaw , properly feather the dead engine and more , especially when typically flown in a single pilot scenario .

Many small piston powered twins ( like e.g piper seminole ) have just barely the power to stay airborne on one engine so its crucial not to panic and follow the procedure correctly ( feather the prop ! ) .

WIth a decent trained pilot a twin engine private plane is way more safe .

 

[bowler]

For what it's worth, I have a twin set up and was happy to have the second engine last week when the port engine broke down at sea. I was at least able to hobble to the nearest port under my own steam. All extra maintenance costs felt worthwhile during that scenario.

 

[gromit83]

Sorry to hear about your troubles.....repowering with an outboard is so much easier....boat engines don’t do a lot of hours but they still have a hard life...always pushing hard....often running well below their intended revs....running cooler than originally specified....and living in the North Sea.

Thanks. I'm probably out a minimum of 13k euros. so thanks. Luckily there are a lot of repower available with volvo DP adapters, but the price is harsh. at least 24k euros and upwards and it doesn't look like the lottery ticket is paying off.

 

[Bouba]

Thanks. I'm probably out a minimum of 13k euros. so thanks. Luckily there are a lot of repower available with volvo DP adapters, but the price is harsh. at least 24k euros and upwards and it doesn't look like the lottery ticket is paying off.

I had exactly the same problem....with my lottery ticket

 

[Bouba]

I set today aside to fix my stern thruster....so last night I deliberately didn’t check my Euromillions ticket because I already had the spares I needed and if I won the €138,000,000....I knew I would lose my motivation.
So this morning I removed the motor..cleaned it up and changed the brushes....I did it all in careful stages...but I had a hunch that reinstalling it would be the most difficult task....so before I did I checked my lottery numbers.
No luck with the numbers...but luckily I got the motor installed without a hitch and it now works properly

 

[ari]

Hi Guys,
I’d set today aside to fix the stern thruster, so last night I made a point not to check my EuroMillions ticket. I already had the spare parts ready, and honestly, if I’d seen that I’d won the €138 million, there’s no way I’d have bothered doing the job!

This morning, I got stuck in—took the motor out, cleaned it up properly, and swapped out the brushes. Took my time, step by step. But I had a gut feeling reinstalling it would be the hardest part, so I paused and finally checked the lottery numbers.

No luck—no millions. But maybe that was for the best, because I got the motor back in smoothly, and now it’s working perfectly. Feels like a win in its own way.

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That's a coincidence, something very similar happened with Bouba just one post above yours...