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Old 01-09-2013, 03:29 PM   #381
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I don't know about you, but I prefer to keep my dangling-down bits well protected while going over logs or sharp nasty rocks.

Maybe there's a parallel here with my "Big Truck / little penis" theory. Are the twin folks overcompensating as well?
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Old 01-09-2013, 03:39 PM   #382
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Single for me. But I could be talked into twins.
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Old 01-09-2013, 03:41 PM   #383
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I don't know about you, but I prefer to keep my dangling-down bits well protected while going over logs or sharp nasty rocks.

Maybe there's a parallel here between my "Big Truck - little penis" theory. Are the twin folks overcompensating as well?
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Old 01-09-2013, 03:57 PM   #384
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If one chain broke at high power the load would momentarily reverse on the other side as it suddenly became driven. Making the chain larger and heavier would only make it more likely to come adrift as that mass was suddenly decelerated with the load reversal then accelerated as the load reversed again.

OK, so how does it run "higher on the curve" at slow speed and still have power reserves to achieve higher loads and speed? This is right back to the old "cruise prop" fantasy of having it both ways.

I'm not following you here. Both sides would be normally be driven all the time. So if one chain broke, the already driven chain on the other side would get a burst of additional power. Sounds like you're thinking in terms of trailing/freewheeling one side...??

Indeed it would require that the operating envelope of the engine be (re)defined and that the engine be instrumented and operated accordingly.
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Old 01-09-2013, 04:33 PM   #385
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This link may be of interest.
It was interesting ... especially the bits about the MPG ... the writer seems to have forgotten that diesel fuel contains anywhere up to 25 percent more energy per gallon than gasoline so his comparisons are meaningless.
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Old 01-09-2013, 04:36 PM   #386
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Greetings,
Mr. Rick B. Post #385 discussing a question that has no answer and YOU'RE concerned about FACTS? Phffftttt..........
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Old 01-09-2013, 04:37 PM   #387
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Eric-- I respond to posts based on what the posters write. Given all the hoopla about twin engine boats sinking from hitting deadheads I can only conclude that the posters are terrified of deadheads. I respect what a deadhead can do, I've seen first hand what they can do, and we keep a very sharp eye out for debris of any kind in the water which as you know from your long experience in these waters can be problematical.

But I am not terrified, scared, or worried about them. If I was as uptight about them as some posters seem to be we'd never take our boat out of the slip.

I have no issue with people's fears. We all have them. What I object to is applying an individual fear onto everyone with regards to a very broad topic like twin engine boats. In this case, the fear is not even close to being supported by reality. You want reality, read Tom's (Sunchaser) and Eidelweiss' posts.

Regarding the one-engine-two-prop configuration, Rick has satisfied my curiosity if this is something that would provide the kind of twin engine operational flexibility I require..
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Old 01-09-2013, 04:43 PM   #388
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I'm not following you here. Both sides would be normally be driven all the time. So if one chain broke, the already driven chain on the other side would get a burst of additional power.
From where does this "power" originate?

An engine doesn't push power out, the load pulls it out.

If there is X amount of load at Y rpm then that is all the engine delivers.

There may be more available but unless the consumer demands it, it isn't produced or delivered and a sudden excess in capacity is not transfered to the other consumer if it doesn't demand it.
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Old 01-09-2013, 04:51 PM   #389
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Heck, I know of a guy who motored right past a number of suitable boatyards with a 9 square foot hole in his hull! That of course proves it's a smart practice for everybody else and that ripping off a stabilizer is no big deal- at least not for a really manly man.
As you know obviously know nothing of the stabilizer incident or why the decisions that were made were made, your assumptions and speculation about them is as meaningless as your apparent belief that it's just a matter of time before a twin engine boat hits a deadhead, rips out a strut and sinks.

I would explain to you what happened and why but I don't like taking the time for that sort of thing if I don't think the reader would benefit from the information.
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Old 01-09-2013, 04:53 PM   #390
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Don't blame me. I didn't start this thread even though mine is post #!. A moderator pulled it from another thread.
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Old 01-09-2013, 05:13 PM   #391
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#391

What's the cap on these arguments?
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Old 01-09-2013, 05:27 PM   #392
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#391

What's the cap on these arguments?
At Post 500 deadheads around the world will automatically be launched to rip the struts off every twin engine boat on the planet and sink it, thus ending the "which one to buy" argument forever.
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Old 01-09-2013, 05:29 PM   #393
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#391

What's the cap on these arguments?
Do you object to fascinating insights?

If you read that many posts and still find time to comment about the number or content then what's the problem?

No one is forced to read this stuff you know ...
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Old 01-09-2013, 05:30 PM   #394
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Heck, I know of a guy who motored right past a number of suitable boatyards with a 9 square foot hole in his hull!
.
WIth a 3'X3' hole how did he get to a boatyard? THose are really big struts! Costa Concordia maybe.

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Old 01-09-2013, 05:40 PM   #395
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WIth a 3'X3' hole how did he get to a boatyard? THose are really big struts! Costa Concordia maybe.

The Costa Concordia was equipped with two azimuthing pods (21,000 kW each).
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Old 01-09-2013, 05:44 PM   #396
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Don't blame me. I didn't start this thread even though mine is post #!. A moderator pulled it from another thread.
No blame from me. I think you should be thanked. I think this exercise is fun and possibly informative. Because of this thread, I now know that if I buy a boat with a wing engine, I need to make sure that it is properly sized for the vessel and not just assume that because it's there that it's good to go.

And let's not forget that we all learned from this thread that vessels with twins are likely to sink if they hit a log, and were talking gaping holes in the hull.

So Mark, you may have saved lives.
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Old 01-09-2013, 05:47 PM   #397
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From where does this "power" originate?

An engine doesn't push power out, the load pulls it out.

If there is X amount of load at Y rpm then that is all the engine delivers.

There may be more available but unless the consumer demands it, it isn't produced or delivered and a sudden excess in capacity is not transfered to the other consumer if it doesn't demand it.

Depends how quickly the fuel control reduces the fuel flow following the initial chain/shaft failure.
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Old 01-09-2013, 06:43 PM   #398
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Single for me. But I could be talked into twins.
In case one has a headache?
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Old 01-09-2013, 06:49 PM   #399
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In case one has a headache?
eeehaw.....toonie time
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Old 01-09-2013, 06:49 PM   #400
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Its raining/snowing with temps in the 30's- small craft advisories everywhere today in Western Washington.

400 posts!-------We gotta have something to do in the winter!!!!!!! Go Trawler Brats!
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