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#11
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
With the new legislation coming in we are looking at 2 stroke vs 4
stroke. I am aware that few people use 4 strokes on inflatables and fewer would manhandle them down beaches removing and replacing them daily as we do. Does anyone have any experience of using 4 strokes on inflatable boats in this way? Are there any implcations to the angle you can carry/store them? I have replaced a small auxiliary outboard on my trailer sailer with a 4-stroke, it's heavier, seems a little less powerful, quieter, far more economic & easier to start. I've never carried it anywhere a beach but its a pain to get into the tender.... (They aren't called tender for nothing) My club has recently bought a 5m rib with a 4-stroke 40 on the back to 'patrol' the races. Its nice, but the engine IS heavy, is more economical, less fast, more quiet (See a pattern here?) My only gripe is that once you've rescued someone, with the rescued dinghy alongside and 3 people on board, the thing won't plane. Unless you have light divers with light diving gear and light lead weights, I'd recommend you buy a 4-stroke 60 for the back of your new boat. It'll still use less fuel and you should leave it bolted to the back of the boat, anyway. Artie |
#12
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
On Wed, 22 Nov 2006 00:58:01 +0000, Gordon Wedman wrote:
and don't some of those 2 strokes have fuel-to-oil ratios approaching 100:1 ? Not a lot of pollution there. Oh, really? How much pollution is a lot? (Yes, that's a rhetorical question.) Matt O. |
#13
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
On Tue, 21 Nov 2006 13:13:14 -0800, ajw wrote:
I am a member of a Scuba diving club and we are investigating replacing our outboard engines. We currently have two Zodiac 5m inflatable boats (not RIBs) with 40HP 2 stroke Mariner outboards. These are reaching the end of their lives and we are looking at replacing them. With the new legislation coming in we are looking at 2 stroke vs 4 stroke. I am aware that few people use 4 strokes on inflatables and fewer would manhandle them down beaches removing and replacing them daily as we do. 4 strokes are more efficient, reliable, quieter, and cleaner than 2 strokes, but they are heavier. However, a newer 4 stroke may be lighter than an older 2 stroke. So look at specs when you shop. I believe there are newer 2 strokes that meet environmental regs -- I don't know about in your size/power range though. Comparing specs is one thing, but consider what's available to you locally, parts and service wise. Everything's a compromise. Does anyone have any experience of using 4 strokes on inflatable boats in this way? Are there any implcations to the angle you can carry/store them? The small Hondas I've used can be laid on their side indefinitely. I don't know about larger ones. Matt O. |
#14
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
My Honda 8HP had to be laid down a specific way.
SBV "Matt O'Toole" wrote in message news On Tue, 21 Nov 2006 13:13:14 -0800, ajw wrote: I am a member of a Scuba diving club and we are investigating replacing our outboard engines. We currently have two Zodiac 5m inflatable boats (not RIBs) with 40HP 2 stroke Mariner outboards. These are reaching the end of their lives and we are looking at replacing them. With the new legislation coming in we are looking at 2 stroke vs 4 stroke. I am aware that few people use 4 strokes on inflatables and fewer would manhandle them down beaches removing and replacing them daily as we do. 4 strokes are more efficient, reliable, quieter, and cleaner than 2 strokes, but they are heavier. However, a newer 4 stroke may be lighter than an older 2 stroke. So look at specs when you shop. I believe there are newer 2 strokes that meet environmental regs -- I don't know about in your size/power range though. Comparing specs is one thing, but consider what's available to you locally, parts and service wise. Everything's a compromise. Does anyone have any experience of using 4 strokes on inflatable boats in this way? Are there any implcations to the angle you can carry/store them? The small Hondas I've used can be laid on their side indefinitely. I don't know about larger ones. Matt O. |
#15
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
Arturo Ui wrote:
snip My club has recently bought a 5m rib with a 4-stroke 40 on the back to 'patrol' the races. Its nice, but the engine IS heavy, is more economical, less fast, more quiet (See a pattern here?) My only gripe is that once you've rescued someone, with the rescued dinghy alongside and 3 people on board, the thing won't plane. If it's all the same to you, I'd rather you didn't do 25kts with my dinghy alongside... reminds me of a story I once heard of someone who was towed in by an RAF launch... However 40 doesn't seem an awful lot for a 5m RIB full of divers and tanks. It seems to me if you get a bigger motor you won't have to run it flat out all the time, so it'll last longer too. Not that I know a lot about these things. Andy |
#16
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
"Charlie Morgan" wrote in message ... On Wed, 22 Nov 2006 13:46:02 -0500, "Scotty" wrote: My Honda 8HP had to be laid down a specific way. SBV Did you find that a small inconvenience, or an insurmountable obstacle, Scotty? neither. it was no big deal. Do you think it would be for you? Is it more of a nuisance than having to carefully measure and mix oil into the gas, and keep it in a separate container for a 2-stroke motor? it was less of a nuisance than you are. I have several 2 stroke engines around here, so there's always a jug of pre mix handy. HTH SBV |
#17
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
4 strokes are great for a lot of reasons, but if fuel quality is
questionable, they can be more trouble than 2 strokes. I've had fuel problems with a 9.9 Yamaha 4 stroke, and an ob mechanic said water or trash caused more problems w/4 strokes because of the smaller jets. "Matt O'Toole" wrote in message news On Tue, 21 Nov 2006 13:13:14 -0800, ajw wrote: I am a member of a Scuba diving club and we are investigating replacing our outboard engines. We currently have two Zodiac 5m inflatable boats (not RIBs) with 40HP 2 stroke Mariner outboards. These are reaching the end of their lives and we are looking at replacing them. With the new legislation coming in we are looking at 2 stroke vs 4 stroke. I am aware that few people use 4 strokes on inflatables and fewer would manhandle them down beaches removing and replacing them daily as we do. 4 strokes are more efficient, reliable, quieter, and cleaner than 2 strokes, but they are heavier. However, a newer 4 stroke may be lighter than an older 2 stroke. So look at specs when you shop. I believe there are newer 2 strokes that meet environmental regs -- I don't know about in your size/power range though. Comparing specs is one thing, but consider what's available to you locally, parts and service wise. Everything's a compromise. Does anyone have any experience of using 4 strokes on inflatable boats in this way? Are there any implcations to the angle you can carry/store them? The small Hondas I've used can be laid on their side indefinitely. I don't know about larger ones. Matt O. |
#18
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
"Charlie Morgan" wrote in message ... On Wed, 22 Nov 2006 17:05:31 -0500, "Scotty" wrote: -0500, "Scotty" wrote: My Honda 8HP had to be laid down a specific way. SBV Did you find that a small inconvenience, or an insurmountable obstacle, Scotty? neither. it was no big deal. Do you think it would be for you? . No. Not at all. My car requires that I park it right side up as well. I've never considered that a problem. I'm surprised that you own a car. SBV |
#19
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
One of the things to avoid in laying a motor down is to get the prop higher than
the engine head. In that case, water from the lower unit can seep up to the head and eventually cause the cylinders to seize up. Oil spillage is messy, but doesn't result in a very expensive repair job. Sherwin D. ajw wrote: Hi I am a member of a Scuba diving club and we are investigating replacing our outboard engines. We currently have two Zodiac 5m inflatable boats (not RIBs) with 40HP 2 stroke Mariner outboards. These are reaching the end of their lives and we are looking at replacing them. With the new legislation coming in we are looking at 2 stroke vs 4 stroke. I am aware that few people use 4 strokes on inflatables and fewer would manhandle them down beaches removing and replacing them daily as we do. Does anyone have any experience of using 4 strokes on inflatable boats in this way? Are there any implcations to the angle you can carry/store them? Thanks in advance for your advice Anthony Whittaker |
#20
posted to rec.boats,rec.boats.cruising,rec.boats.building,uk.rec.sailing,uk.rec.boats.motor
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2 stroke / 4 stroke advice
wrote in message ... On Tue, 21 Nov 2006 16:43:49 -0500, Larry wrote: Yes. In any engine with loose lube oil inside it, you can only tilt, carry and store it in certain locations. They ship 4 stroke Mercs "wet". Mine came in with everything ready to go but the gasoline. I am not sure how they keep truckers from storing them any damn way they want. Label "this way up" ? :-) ChrisR |
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