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#1
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posted to rec.boats
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On Sat, 27 Dec 2008 11:35:52 -0800 (PST), Tim
wrote: i think they're operating cost comparison's are W-A-A-A-Y overboard. ("Overboard" pardon the pun) For one thing, they're using gasoline and diesel at the same purchase costs.... Yes but that's the least of it in my opinion. It is difficult, if not impossible to build a reliable, high output, lightweight diesel. If it were possible lots of other people would have done it by now. High power to weight ratio is what outboards excel at - diesels, not so much. |
#2
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posted to rec.boats
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On Sat, 27 Dec 2008 14:57:41 -0500, Wayne.B wrote:
On Sat, 27 Dec 2008 11:35:52 -0800 (PST), Tim wrote: i think they're operating cost comparison's are W-A-A-A-Y overboard. ("Overboard" pardon the pun) For one thing, they're using gasoline and diesel at the same purchase costs.... Yes but that's the least of it in my opinion. It is difficult, if not impossible to build a reliable, high output, lightweight diesel. If it were possible lots of other people would have done it by now. High power to weight ratio is what outboards excel at - diesels, not so much. Nothing is impossible. You design the tool to do the job. This isn't going to be every ones engine. E-Tech has that wrapped up. This is a diesel. Things change! |
#3
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posted to rec.boats
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On Sat, 27 Dec 2008 14:57:41 -0500, Wayne.B
wrote: On Sat, 27 Dec 2008 11:35:52 -0800 (PST), Tim wrote: i think they're operating cost comparison's are W-A-A-A-Y overboard. ("Overboard" pardon the pun) For one thing, they're using gasoline and diesel at the same purchase costs.... Yes but that's the least of it in my opinion. It is difficult, if not impossible to build a reliable, high output, lightweight diesel. If it were possible lots of other people would have done it by now. High power to weight ratio is what outboards excel at - diesels, not so much. Well, Mercedes is racing a high rpm short stroke diesel and it seems to work well. I think they even make a car with one - I'm not a Mercedes guy so what do I know. Then again, your point is well taken - the whole point of diesels is lots of power at low rpms. |
#4
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posted to rec.boats
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On Sat, 27 Dec 2008 13:09:53 -0500, RLM wrote:
This isn't like a long stroke 20-1 compression ratio, low RPM, tractor engine. Low HP,slow speed, extremely high torque. I agree with you on everything. The problem is why an outboard? I would think that this is a perfect type of diesel for the small inboard - in particular something like a jet boat - with that kind of raw torgue available, you could run two jets - maybe even three off of one engine. Mercedes has been racing a short stroke diesel for the past few years on the endurance circuit and certainly the concept is proven to be reliable, but why outboards? It doesn't seem to me to be directly applicable, but then again, I'm a moron. |
#5
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posted to rec.boats
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![]() "Tom Francis" wrote in message ... On Sat, 27 Dec 2008 13:09:53 -0500, RLM wrote: This isn't like a long stroke 20-1 compression ratio, low RPM, tractor engine. Low HP,slow speed, extremely high torque. I agree with you on everything. The problem is why an outboard? I would think that this is a perfect type of diesel for the small inboard - in particular something like a jet boat - with that kind of raw torgue available, you could run two jets - maybe even three off of one engine. Mercedes has been racing a short stroke diesel for the past few years on the endurance circuit and certainly the concept is proven to be reliable, but why outboards? It doesn't seem to me to be directly applicable, but then again, I'm a moron. They run a big jet off the one engine. http://www.precisionweldboats.com/ Tom (Maxrat) probably makes one of the top 3 boats in the industry. |
#7
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posted to rec.boats
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Tom Francis wrote:
On Fri, 26 Dec 2008 11:43:09 -0600, wrote: On Fri, 26 Dec 2008 09:01:05 -0800, CalifBill wrote: http://www.megoutboard.com/index.php Wonder how they would work on a triple engine Grady? To me, it doesn't seem that the advantages of a diesel translate well to an outboard engine, especially a turbo diesel. Am I missing something? Yes. It's just another pitiful attempt by the four stroke crowd to salvage something out of their ancient technology in the face of clearly superior two stroke, direct injected technology. Namely ETECs which, as we all know, are the wave (get it wave?) of the future. :) Sad isn't it? I think it is wonderful that you alone are helping eTec survive through the first week of the New Year, and that you used the S&H Green Stamps you got an an incentive to buy a new Olympus 4/3'ds camera. :) |
#8
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posted to rec.boats
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On Mon, 29 Dec 2008 12:28:23 +0000, Tom Francis wrote:
On Fri, 26 Dec 2008 11:43:09 -0600, wrote: On Fri, 26 Dec 2008 09:01:05 -0800, CalifBill wrote: http://www.megoutboard.com/index.php Wonder how they would work on a triple engine Grady? To me, it doesn't seem that the advantages of a diesel translate well to an outboard engine, especially a turbo diesel. Am I missing something? Yes. It's just another pitiful attempt by the four stroke crowd to salvage something out of their ancient technology in the face of clearly superior two stroke, direct injected technology. Namely ETECs which, as we all know, are the wave (get it wave?) of the future. :) Sad isn't it? Detroits are two stroke diesels. The piston acts as a sliding intake valve. Four exaust valves for high flow. Short stroke with turbo is the advantage. |
#9
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On Mon, 29 Dec 2008 10:04:08 -0500, RLM wrote:
On Mon, 29 Dec 2008 12:28:23 +0000, Tom Francis wrote: On Fri, 26 Dec 2008 11:43:09 -0600, wrote: On Fri, 26 Dec 2008 09:01:05 -0800, CalifBill wrote: http://www.megoutboard.com/index.php Wonder how they would work on a triple engine Grady? To me, it doesn't seem that the advantages of a diesel translate well to an outboard engine, especially a turbo diesel. Am I missing something? Yes. It's just another pitiful attempt by the four stroke crowd to salvage something out of their ancient technology in the face of clearly superior two stroke, direct injected technology. Namely ETECs which, as we all know, are the wave (get it wave?) of the future. :) Sad isn't it? Detroits are two stroke diesels. The piston acts as a sliding intake valve. Four exaust valves for high flow. Short stroke with turbo is the advantage. http://www.industrialbrake.com.au/im...sel_liners.jpg |
#10
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posted to rec.boats
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![]() "Tom Francis" wrote in message ... On Fri, 26 Dec 2008 11:43:09 -0600, wrote: On Fri, 26 Dec 2008 09:01:05 -0800, CalifBill wrote: http://www.megoutboard.com/index.php Wonder how they would work on a triple engine Grady? To me, it doesn't seem that the advantages of a diesel translate well to an outboard engine, especially a turbo diesel. Am I missing something? Yes. It's just another pitiful attempt by the four stroke crowd to salvage something out of their ancient technology in the face of clearly superior two stroke, direct injected technology. Namely ETECs which, as we all know, are the wave (get it wave?) of the future. :) Sad isn't it? Those ancient 4 strokes do not blow up as often as those Evinrude Etec forerunner clones. |
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