|
On plane - some pictures...
This morning, while burning some old gas in the Ranger, I took the
following sequence of pictures at various speeds. The first is at idle - putting along. http://www.home.earthlink.net/~tomf123/Idlestern.JPG The second is with power applied - 1k rpm. Notice the increase in wave height. http://www.home.earthlink.net/~tomf123/onekstern.JPG This is 1.5K. The shape of the wake is changing. http://www.home.earthlink.net/~tomf1...tfivestern.JPG This is 1.5K bow wave - this is where the bow wave starts to appear. http://www.home.earthlink.net/~tomf1...fivebowave.JPG 2K stern - the shape of the wake is starting really change here. http://www.home.earthlink.net/~tomf123/twokstern.JPG 2.5K - the shape of the wake is fully formed, but we're not quite there yet. http://www.home.earthlink.net/~tomf1...tfivestern.JPG 3K - this is the transitional stage where the boat comes fully up on the planing surface. It doesn't happen in short bursts on this boat - it literally goes from 3K to 4K all at once and your on plane. The planing wake shape is now fully formed. http://www.home.earthlink.net/~tomf123/threeKstern.JPG Notice the lack of bow wave. http://www.home.earthlink.net/~tomf123/threekbowave.JPG 3.9K http://www.home.earthlink.net/~tomf1...ineplaning.JPG Up on plane at 3.9k - wake fully formed. http://www.home.earthlink.net/~tomf1...planestern.JPG WOT. http://www.home.earthlink.net/~tomf123/WOT.JPG Wake WOT. http://www.home.earthlink.net/~tomf123/WOTplane.JPG Cruise and Cruise wake: http://www.home.earthlink.net/~tomf123/cruise.jpg http://www.home.earthlink.net/~tomf1...iseplaning.JPG Hull shape bow and stern: http://www.home.earthlink.net/~tomf123/hullshapebow.JPG http://www.home.earthlink.net/~tomf1...shapestern.JPG I'm not sure what all this proves, but it shows that most of this boat is out of the water, on top - gliding if you will. :) Phew....glad all that's over with. Now, bring on the politics!!!! Er.......forget I said that. Take care. Tom "The beatings will stop when morale improves." E. Teach, 1717 |
I didn't see a dock at your launching ramp. What do you do with the boat as
you park the tow vehicle/trailer. That lake sure looked nice and peaceful before you cranked it up. Bet it would be a good place for a modest sailboat. |
Harry,
Ain't ya ever heard of auto pilot? :-) Paul "Harry Krause" wrote in message ... Don White wrote: I didn't see a dock at your launching ramp. What do you do with the boat as you park the tow vehicle/trailer. That lake sure looked nice and peaceful before you cranked it up. Bet it would be a good place for a modest sailboat. I was wondering who was steering the boat...while our hero had his eyes planted sternward... -- A passing thought: "Then you wake up at the high school level and find out that the illiteracy level of our children are appalling." —George W. Bush, Washington, D.C., Jan. 23, 2004 |
Looks like you have a bad sender/gauge or you have a LOT of fuel to burn.
Short Wave Sportfishing wrote: This morning, while burning some old gas in the Ranger, I took the following sequence of pictures at various speeds. 3.9K http://www.home.earthlink.net/~tomf1...ineplaning.JPG |
On Wed, 24 Nov 2004 00:04:10 GMT, Dan Krueger
wrote: Looks like you have a bad sender/gauge or you have a LOT of fuel to burn. I filled it three weeks ago in anticipation of a inshore trip and that didn't pan out, so I wanted to burn off about 8 gallons or so for overwinter. I didn't want to have a full gas tank - been there, done that. :) Later, Tom |
On Tue, 23 Nov 2004 19:19:10 -0500, Harry Krause
wrote: Short Wave Sportfishing wrote: On Wed, 24 Nov 2004 00:04:10 GMT, Dan Krueger wrote: Looks like you have a bad sender/gauge or you have a LOT of fuel to burn. I filled it three weeks ago in anticipation of a inshore trip and that didn't pan out, so I wanted to burn off about 8 gallons or so for overwinter. I didn't want to have a full gas tank - been there, done that. :) Where do you keep the Contender, down on the Sound? Narragensett Bay. Later, Tom |
On Tue, 23 Nov 2004 19:19:55 GMT, "Don White"
wrote: I didn't see a dock at your launching ramp. What do you do with the boat as you park the tow vehicle/trailer. Dock? I don't need no steenkin' dock.... :) Just beach it - simple as that. That's why God made keel guards. That lake sure looked nice and peaceful before you cranked it up. Bet it would be a good place for a modest sailboat. Actually, there are three ponds and they are excellent for sailing. There is a large sail club in the middle pond and they race O'Day day sailors. In the evening, there is a nice breeze on most days that comes off the land and swirls around - it is a little tricky, but once you get used to it, it's a ton of fun. I used to have a Hobie Cat and could get up a good head of steam in the center pond on a decent day. In the winter, when the ice is right, there is a sizable ice boat club that races on the lake. Take care. Tom "The beatings will stop when morale improves." E. Teach, 1717 |
On Tue, 23 Nov 2004 14:24:27 -0500, Harry Krause
wrote: Don White wrote: I didn't see a dock at your launching ramp. What do you do with the boat as you park the tow vehicle/trailer. That lake sure looked nice and peaceful before you cranked it up. Bet it would be a good place for a modest sailboat. I was wondering who was steering the boat...while our hero had his eyes planted sternward... I was large and in-charge. I took the sternward looking pictures using a mirror. No - I just made sure there weren't any boats in the way and took the pix. It was pretty freakin' cold out there I might add. All the best, Tom -------------- "What the hell's the deal with this newsgroup... is there a computer terminal in the day room of some looney bin somewhere?" Bilgeman - circa 2004 |
On Tue, 23 Nov 2004 15:59:09 -0500, Harry Krause
wrote: Paul Schilter wrote: Harry, Ain't ya ever heard of auto pilot? :-) Paul "Harry Krause" wrote in message ... Don White wrote: I didn't see a dock at your launching ramp. What do you do with the boat as you park the tow vehicle/trailer. That lake sure looked nice and peaceful before you cranked it up. Bet it would be a good place for a modest sailboat. I was wondering who was steering the boat...while our hero had his eyes planted sternward... Indeed, and if anyone would have it on a bass boat, it would be our hero. They make one for bass boats you know. And I'll have you understand that it's not a bass boat - it's a BAY boat. Harrumph..... Live long and prosper, Tom |
Short Wave Sportfishing wrote:
This morning, while burning some old gas in the Ranger..... 2.5K - the shape of the wake is fully formed, but we're not quite there yet. http://www.home.earthlink.net/~tomf1...tfivestern.JPG Actually, at this point, you're planing. The crest of the boat's stern wave is noticably past the transom, and therefor by definition you're exceeding hull speed... therefor planing. Of course, it's not an either/or thing in the real world. The boat's weight is still largely supported by displacement rather than dynamic lift, hence the hole in the water which the wake is closing up. 3K - this is the transitional stage where the boat comes fully up on the planing surface. It doesn't happen in short bursts on this boat - it literally goes from 3K to 4K all at once and your on plane. The planing wake shape is now fully formed. http://www.home.earthlink.net/~tomf123/threeKstern.JPG Notice the lack of bow wave. http://www.home.earthlink.net/~tomf123/threekbowave.JPG The bow wave is there, it's just behind you ;) I commend you for taking the time & effort to put some observation on the wake. Far too many people pretend it's not there. Somewhere floating around I have some pictures taken astern from the Johnson 18 when it's planing, when close-hauled and under spinnaker. When "fully planing" there's no wave train at all, just a flat swath of white water. Of course the hull shape is much more efficient.... Fair Skies Doug King |
Tom, anticipating that you were about to post pictures of your stern
wave, I took a few of my own last Sunday. The one below was taken about a mile west of Sanibel Island while traveling about 2 knots over theoretical hull speed in a 60,000 pound boat. If you look closely you can see two dolphins swimming in the wake which I estimate to be about 3 feet in height at the stern of the boat. http://tinyurl.com/3pgfr We were definitely not on plane, but were cooking right along for a big heavy boat. =============================================== On Tue, 23 Nov 2004 18:09:33 GMT, Short Wave Sportfishing wrote: This morning, while burning some old gas in the Ranger, I took the following sequence of pictures at various speeds. The first is at idle - putting along. http://www.home.earthlink.net/~tomf123/Idlestern.JPG The second is with power applied - 1k rpm. Notice the increase in wave height. http://www.home.earthlink.net/~tomf123/onekstern.JPG This is 1.5K. The shape of the wake is changing. http://www.home.earthlink.net/~tomf1...tfivestern.JPG This is 1.5K bow wave - this is where the bow wave starts to appear. http://www.home.earthlink.net/~tomf1...fivebowave.JPG 2K stern - the shape of the wake is starting really change here. http://www.home.earthlink.net/~tomf123/twokstern.JPG 2.5K - the shape of the wake is fully formed, but we're not quite there yet. http://www.home.earthlink.net/~tomf1...tfivestern.JPG 3K - this is the transitional stage where the boat comes fully up on the planing surface. It doesn't happen in short bursts on this boat - it literally goes from 3K to 4K all at once and your on plane. The planing wake shape is now fully formed. http://www.home.earthlink.net/~tomf123/threeKstern.JPG Notice the lack of bow wave. http://www.home.earthlink.net/~tomf123/threekbowave.JPG 3.9K http://www.home.earthlink.net/~tomf1...ineplaning.JPG Up on plane at 3.9k - wake fully formed. http://www.home.earthlink.net/~tomf1...planestern.JPG WOT. http://www.home.earthlink.net/~tomf123/WOT.JPG Wake WOT. http://www.home.earthlink.net/~tomf123/WOTplane.JPG Cruise and Cruise wake: http://www.home.earthlink.net/~tomf123/cruise.jpg http://www.home.earthlink.net/~tomf1...iseplaning.JPG Hull shape bow and stern: http://www.home.earthlink.net/~tomf123/hullshapebow.JPG http://www.home.earthlink.net/~tomf1...shapestern.JPG I'm not sure what all this proves, but it shows that most of this boat is out of the water, on top - gliding if you will. :) Phew....glad all that's over with. Now, bring on the politics!!!! Er.......forget I said that. Take care. Tom "The beatings will stop when morale improves." E. Teach, 1717 |
Short Wave Sportfishing wrote:
This morning, while burning some old gas in the Ranger, I took the following sequence of pictures at various speeds. Thanks, a very pretty part of the world, the lake must be a picture in summer. Thanks again K The first is at idle - putting along. http://www.home.earthlink.net/~tomf123/Idlestern.JPG The second is with power applied - 1k rpm. Notice the increase in wave height. http://www.home.earthlink.net/~tomf123/onekstern.JPG This is 1.5K. The shape of the wake is changing. http://www.home.earthlink.net/~tomf1...tfivestern.JPG This is 1.5K bow wave - this is where the bow wave starts to appear. http://www.home.earthlink.net/~tomf1...fivebowave.JPG 2K stern - the shape of the wake is starting really change here. http://www.home.earthlink.net/~tomf123/twokstern.JPG 2.5K - the shape of the wake is fully formed, but we're not quite there yet. http://www.home.earthlink.net/~tomf1...tfivestern.JPG 3K - this is the transitional stage where the boat comes fully up on the planing surface. It doesn't happen in short bursts on this boat - it literally goes from 3K to 4K all at once and your on plane. The planing wake shape is now fully formed. http://www.home.earthlink.net/~tomf123/threeKstern.JPG Notice the lack of bow wave. http://www.home.earthlink.net/~tomf123/threekbowave.JPG 3.9K http://www.home.earthlink.net/~tomf1...ineplaning.JPG Up on plane at 3.9k - wake fully formed. http://www.home.earthlink.net/~tomf1...planestern.JPG WOT. http://www.home.earthlink.net/~tomf123/WOT.JPG Wake WOT. http://www.home.earthlink.net/~tomf123/WOTplane.JPG Cruise and Cruise wake: http://www.home.earthlink.net/~tomf123/cruise.jpg http://www.home.earthlink.net/~tomf1...iseplaning.JPG Hull shape bow and stern: http://www.home.earthlink.net/~tomf123/hullshapebow.JPG http://www.home.earthlink.net/~tomf1...shapestern.JPG I'm not sure what all this proves, but it shows that most of this boat is out of the water, on top - gliding if you will. :) Phew....glad all that's over with. Now, bring on the politics!!!! Er.......forget I said that. Take care. Tom "The beatings will stop when morale improves." E. Teach, 1717 |
On Tue, 23 Nov 2004 23:31:35 -0500, Wayne.B
wrote: Tom, anticipating that you were about to post pictures of your stern wave, I took a few of my own last Sunday. The one below was taken about a mile west of Sanibel Island while traveling about 2 knots over theoretical hull speed in a 60,000 pound boat. If you look closely you can see two dolphins swimming in the wake which I estimate to be about 3 feet in height at the stern of the boat. These are the kinds of wakes I just LOVE to run into on Narragansett Bay in my Ranger. LOOOOOOVE them.... :) Later, Tom |
On Tue, 23 Nov 2004 21:46:53 -0500, DSK wrote:
Short Wave Sportfishing wrote: This morning, while burning some old gas in the Ranger..... 2.5K - the shape of the wake is fully formed, but we're not quite there yet. http://www.home.earthlink.net/~tomf1...tfivestern.JPG Actually, at this point, you're planing. The crest of the boat's stern wave is noticably past the transom, and therefor by definition you're exceeding hull speed... therefor planing. Of course, it's not an either/or thing in the real world. The boat's weight is still largely supported by displacement rather than dynamic lift, hence the hole in the water which the wake is closing up. Good point. 3K - this is the transitional stage where the boat comes fully up on the planing surface. It doesn't happen in short bursts on this boat - it literally goes from 3K to 4K all at once and your on plane. The planing wake shape is now fully formed. http://www.home.earthlink.net/~tomf123/threeKstern.JPG Notice the lack of bow wave. http://www.home.earthlink.net/~tomf123/threekbowave.JPG The bow wave is there, it's just behind you ;) Yeah - I wondered how to phrase that. Thinking about it, I should have said the bow wave moved aft. I commend you for taking the time & effort to put some observation on the wake. Far too many people pretend it's not there. This boat has always interested me in that, as I've mentioned about a zillion times, it has no bow lift and it's theoretical top speed is about fifteen mph above what it actually gets (40 vs 55). It doesn't act like it's supposed to. :) Somewhere floating around I have some pictures taken astern from the Johnson 18 when it's planing, when close-hauled and under spinnaker. When "fully planing" there's no wave train at all, just a flat swath of white water. Of course the hull shape is much more efficient.... I'd like to see those. I'm not sure I could agree about efficiency - the Ranger hull is pretty efficient if only because of it's odd performance. TTFN, Tom "Bodies are for hookers and fat people." Bender - "Futurama" |
On Wed, 24 Nov 2004 18:30:06 +1100, "K. Smith"
wrote: Short Wave Sportfishing wrote: This morning, while burning some old gas in the Ranger, I took the following sequence of pictures at various speeds. Thanks, a very pretty part of the world, the lake must be a picture in summer. Yes - that beautiful FICHT RAM is a good looking motor isn't it? :) It's a pretty lake and New England (the blue states) is gorgeous in the summer and fall. Winter and spring are different stories. :) Later, Tom |
.... The boat's weight is still largely
supported by displacement rather than dynamic lift, hence the hole in the water which the wake is closing up. Short Wave Sportfishing wrote: Good point. I think most people overlook the real meaning of "planing" and prefer to think of it as much faster than when it really begins to happen. But it also effects steering, so it's important to know about. I commend you for taking the time & effort to put some observation on the wake. Far too many people pretend it's not there. This boat has always interested me in that, as I've mentioned about a zillion times, it has no bow lift and it's theoretical top speed is about fifteen mph above what it actually gets (40 vs 55). It doesn't act like it's supposed to. :) No bow lift is nice, I bet the steering is well balanced through the transition as well. Hull design has come a long way in the past 20 years, but then engineering costs money and most boat companies know they can sell the same old same-old. I'm curious about the top speed issue- have you gone into the prop question? Is your motor getting up to rated RPM? Is the boat over weight? Somewhere floating around I have some pictures taken astern from the Johnson 18 when it's planing, when close-hauled and under spinnaker. When "fully planing" there's no wave train at all, just a flat swath of white water. Of course the hull shape is much more efficient.... I'd like to see those. I'll hunt around for them. The shots were taken with a throwaway camera and I never scanned them. The only reason I took them at all is that we were in a race with the boats too spread out to be much excitement, and I was concentrating on getting some shots of wife with the spinnaker. The wake shots were kind of an afterthought ;) ... I'm not sure I could agree about efficiency - the Ranger hull is pretty efficient if only because of it's odd performance. heh heh look at the difference in horsepower. The Johnson 18 carries about 600# total at 25 knots on about 10 or 12 horsepower. I'm sure your boat is much heavier but if you wanted to plot both boats on a power/speed/per pound graph, I'd bet a *lot* that the Johnson 18 is far more efficient. For one thing, the hull of a saliboat is shaped for much less drag than a planing motorboat... it has to be, sailboats spend too much of their time not planing and with too little horsepower available, so to shape a sailboat for planing only cripples it. To get it to plane at all requires more lift from the little power available... actually there are exceptions to this, such as the unlimited skiffs. Secondly, things like spray strakes add drag (they also stiffen the hull) and cost a lot, efficiency-wise. It's like the difference between a jet & a glider. The glider is more efficient, but then the jet doesn't need to be efficient... but it does have other critical performance parameters. Fair Skies Doug King |
On Tue, 23 Nov 2004 18:09:33 GMT, Short Wave Sportfishing
wrote: This morning, while burning some old gas in the Ranger, I took the following sequence of pictures at various speeds. Couple of comments: Nice lake. Where is it? How do you handle the boat single handed with no dock at the ramp? I'm not used to seeing the tach so high and the speedo so low. At 5000 RPM, I'm touching 70 MPH, so if I saw that, I'd think my prop was slipping or severely ventilating..... Your boat was planing between 2000 and 3000 RPM judging from the shape of the wake. My experience has shown me that the wake develops a white frothy churn as it starts to rise up out of the water (about 2000 RPM on my boat). The froth eventually retreats to a large "hump" almost resembling a rooster tail just before fully on plane. As the wake finally flattens, that is the point that you are officially "on-plane". At that point your MPH will jump up sharply with a slight rise in RPM (due to the load lessening). I can slowly push my boat up to 3000 RPM and not be going more than 15 MPH initially. Once it goes "over the hump", the speed will quickly rise to about 40 MPH, and the tach will jump to about 3400 RPM. When I back it back to 3000, the speed will hold at 38 MPH. I can drop it back to about 2300 RPM, and about 22 MPH with the tabs down before it falls back off plane. Dave |
On Wed, 24 Nov 2004 11:52:02 GMT, Short Wave Sportfishing
wrote: This boat has always interested me in that, as I've mentioned about a zillion times, it has no bow lift and it's theoretical top speed is about fifteen mph above what it actually gets (40 vs 55). It doesn't act like it's supposed to. :) Have you tried a high rake prop? That should increase your bow lift. Also a setback engine bracket can also increase bow lift. Dave |
On Wed, 24 Nov 2004 07:33:09 -0500, DSK wrote:
.... The boat's weight is still largely supported by displacement rather than dynamic lift, hence the hole in the water which the wake is closing up. Short Wave Sportfishing wrote: Good point. I think most people overlook the real meaning of "planing" and prefer to think of it as much faster than when it really begins to happen. But it also effects steering, so it's important to know about. Also a good point. I commend you for taking the time & effort to put some observation on the wake. Far too many people pretend it's not there. This boat has always interested me in that, as I've mentioned about a zillion times, it has no bow lift and it's theoretical top speed is about fifteen mph above what it actually gets (40 vs 55). It doesn't act like it's supposed to. :) No bow lift is nice, I bet the steering is well balanced through the transition as well. Hull design has come a long way in the past 20 years, but then engineering costs money and most boat companies know they can sell the same old same-old. It's odd that you should mention that - the steering is almost exactly neutral at all speeds. I can turn against the engine torque as well as I can turn with the engine torque - it's pretty much effortless. The engine does have hydraulic steering, but I would expect some feedback turning against the torque. I could be wrong. I'm curious about the top speed issue- have you gone into the prop question? Is your motor getting up to rated RPM? Is the boat over weight? It something that has puzzled me since the git go (the boat is a 2000 and I bought it left over in 2001). I've gone up/down in location, up/down in size and pitch, I put a test prop on it and ran it - it is producing 200 hp where it's supposed to - the boat is heavy, but normally, I'm the only one who uses it, so weight isn't really a factor. Compared to the fellow over in RI who has the identical boat except that he has a 200 Yamaha HPDI, it is short of top end by 15 mph - on a GPS - his boat will do 57 Mph compared to 40/43 for mine at WOT. He has a couple hundred more RPM than I do, but I don't think that's significant. To give you an example, I'm running a 14 1/4 x 23 SS now and have gone up as high as a 14 1/2 x 23 and have changed every pitch from 17 to 23 - no change in speed. No joke - no change in speed. Change in RPM, no change in speed. It's going to drive me nuts eventually. :) ~~ snippage ~~ I'll hunt around for them. The shots were taken with a throwaway camera and I never scanned them. The only reason I took them at all is that we were in a race with the boats too spread out to be much excitement, and I was concentrating on getting some shots of wife with the spinnaker. The wake shots were kind of an afterthought ;) ... I'm not sure I could agree about efficiency - the Ranger hull is pretty efficient if only because of it's odd performance. heh heh look at the difference in horsepower. The Johnson 18 carries about 600# total at 25 knots on about 10 or 12 horsepower. I'm sure your boat is much heavier but if you wanted to plot both boats on a power/speed/per pound graph, I'd bet a *lot* that the Johnson 18 is far more efficient. Good point. For one thing, the hull of a saliboat is shaped for much less drag than a planing motorboat... it has to be, sailboats spend too much of their time not planing and with too little horsepower available, so to shape a sailboat for planing only cripples it. To get it to plane at all requires more lift from the little power available... actually there are exceptions to this, such as the unlimited skiffs. Secondly, things like spray strakes add drag (they also stiffen the hull) and cost a lot, efficiency-wise. It's like the difference between a jet & a glider. The glider is more efficient, but then the jet doesn't need to be efficient... but it does have other critical performance parameters. I'll admit, I don't know a whole bunch about hull design because I've never had to get into it. I'm not much of a sailor either, so I can see where it would be of interest to guys with sticks in the middle of their boats compared to us brute hp types. :) Need to do some reading over the holidays. :) Later, Tom |
On Wed, 24 Nov 2004 07:46:41 -0500, Dave Hall
wrote: On Tue, 23 Nov 2004 18:09:33 GMT, Short Wave Sportfishing wrote: This morning, while burning some old gas in the Ranger, I took the following sequence of pictures at various speeds. Couple of comments: Nice lake. Where is it? Webster, MA. Lake Chargogagogmanchaugagogchabungamungagog. How do you handle the boat single handed with no dock at the ramp? What - you can't launch without a dock? What a wimp... :) Simple, boat comes off the trailer, bow line attached to trailer, pull boat to the side, beach same. The boat has a keel guard. I'm not used to seeing the tach so high and the speedo so low. At 5000 RPM, I'm touching 70 MPH, so if I saw that, I'd think my prop was slipping or severely ventilating..... It's not. Your boat was planing between 2000 and 3000 RPM judging from the shape of the wake. My experience has shown me that the wake develops a white frothy churn as it starts to rise up out of the water (about 2000 RPM on my boat). The froth eventually retreats to a large "hump" almost resembling a rooster tail just before fully on plane. As the wake finally flattens, that is the point that you are officially "on-plane". At that point your MPH will jump up sharply with a slight rise in RPM (due to the load lessening). Mine is pretty much the opposite. At 3k, the boat leaps up to 4k and the speed goes from 20/23 to 30/35 and we're off to the races. It's quite interesting to watch and experience. See my post to DSK about the prop thing. I can slowly push my boat up to 3000 RPM and not be going more than 15 MPH initially. Once it goes "over the hump", the speed will quickly rise to about 40 MPH, and the tach will jump to about 3400 RPM. When I back it back to 3000, the speed will hold at 38 MPH. I can drop it back to about 2300 RPM, and about 22 MPH with the tabs down before it falls back off plane. I can't hold plane much below 20. Later, Tom |
On Wed, 24 Nov 2004 13:38:37 GMT, Short Wave Sportfishing
wrote: On Wed, 24 Nov 2004 07:46:41 -0500, Dave Hall wrote: On Tue, 23 Nov 2004 18:09:33 GMT, Short Wave Sportfishing wrote: This morning, while burning some old gas in the Ranger, I took the following sequence of pictures at various speeds. Couple of comments: Nice lake. Where is it? Webster, MA. Lake Chargogagogmanchaugagogchabungamungagog. How do you handle the boat single handed with no dock at the ramp? What - you can't launch without a dock? What a wimp... :) Simple, boat comes off the trailer, bow line attached to trailer, pull boat to the side, beach same. The boat has a keel guard. I guess I'm guilty of being a wimp then. I can't get on my boat without having access to the stern, so beaching it at this time of the year is not the best way to stay warm and dry. I also don't have a keel guard and I have an aversion to scratching up the nice shiny gelcoat. I'm not used to seeing the tach so high and the speedo so low. At 5000 RPM, I'm touching 70 MPH, so if I saw that, I'd think my prop was slipping or severely ventilating..... It's not. I know. It's just a radical departure from the "norm" that I'm used to seeing. Your boat was planing between 2000 and 3000 RPM judging from the shape of the wake. My experience has shown me that the wake develops a white frothy churn as it starts to rise up out of the water (about 2000 RPM on my boat). The froth eventually retreats to a large "hump" almost resembling a rooster tail just before fully on plane. As the wake finally flattens, that is the point that you are officially "on-plane". At that point your MPH will jump up sharply with a slight rise in RPM (due to the load lessening). Mine is pretty much the opposite. At 3k, the boat leaps up to 4k and the speed goes from 20/23 to 30/35 and we're off to the races. It's quite interesting to watch and experience. See my post to DSK about the prop thing. Your prop experiences are somewhat odd. Every inch of pitch should change engine speed about 200 RPM. But more importantly, if the engine is propped at the point where the sum of torque and H.P. are the highest (Usually near the top of the rated RPM range), you should see a greater speed than the same style prop with a lower or higher pitch. It's strange that your speed remains constant while RPM is all over the place. I would think you should see SOME difference in speed. Also, higher rake props will add bow lift and allow you to trim farther up, which should result in less wetted hull surface(drag) , and a corresponding increase in speed and RPM. Setback engine brackets allow the engine to be placed in an area of less turbulent water, which then allows you to raise the engine height, and thereby reducing gearcase drag, which also translates to higher speed. I can slowly push my boat up to 3000 RPM and not be going more than 15 MPH initially. Once it goes "over the hump", the speed will quickly rise to about 40 MPH, and the tach will jump to about 3400 RPM. When I back it back to 3000, the speed will hold at 38 MPH. I can drop it back to about 2300 RPM, and about 22 MPH with the tabs down before it falls back off plane. I can't hold plane much below 20. I can't either. If not for the trim tabs, I wouldn't be able to go much lower than 25. Then again, my boat isn't designed for slow speeds. Dave |
On Wed, 24 Nov 2004 11:55:58 -0500, Dave Hall
wrote: On Wed, 24 Nov 2004 13:38:37 GMT, Short Wave Sportfishing wrote: On Wed, 24 Nov 2004 07:46:41 -0500, Dave Hall wrote: On Tue, 23 Nov 2004 18:09:33 GMT, Short Wave Sportfishing wrote: This morning, while burning some old gas in the Ranger, I took the following sequence of pictures at various speeds. Couple of comments: Nice lake. Where is it? Webster, MA. Lake Chargogagogmanchaugagogchabungamungagog. How do you handle the boat single handed with no dock at the ramp? What - you can't launch without a dock? What a wimp... :) Simple, boat comes off the trailer, bow line attached to trailer, pull boat to the side, beach same. The boat has a keel guard. I guess I'm guilty of being a wimp then. I can't get on my boat without having access to the stern, so beaching it at this time of the year is not the best way to stay warm and dry. I also don't have a keel guard and I have an aversion to scratching up the nice shiny gelcoat. Your boat is considerably different than mine - your wimpyness is hereby excused. For the nonce. :) Later, Tom |
On Wed, 24 Nov 2004 11:42:17 GMT, Short Wave Sportfishing
wrote: On Tue, 23 Nov 2004 23:31:35 -0500, Wayne.B wrote: Tom, anticipating that you were about to post pictures of your stern wave, I took a few of my own last Sunday. The one below was taken about a mile west of Sanibel Island while traveling about 2 knots over theoretical hull speed in a 60,000 pound boat. If you look closely you can see two dolphins swimming in the wake which I estimate to be about 3 feet in height at the stern of the boat. These are the kinds of wakes I just LOVE to run into on Narragansett Bay in my Ranger. LOOOOOOVE them.... :) ========================================= Yeah, you could get some serious air on that wake. Given what it costs me to produce it, I should charge admission :-) As it is I give everyone one free jump. If they annoy me in some way and make a turn for a second pass, I just slow down a couple of knots and take the fun away. |
"Short Wave Sportfishing" wrote in message ... Your boat is considerably different than mine - your wimpyness is hereby excused. For the nonce. :) Later, Inland lake sailors with the same boat as me..keep the boat a bit off shore on the anchor while stowing vehicle/trailer. Then then wade/swim out to the boat and use a boarding ladder. The North Atlantic tends to be a bit cooler than inland lakes...so this is a bit more uncomfortable. |
On Wed, 24 Nov 2004 13:38:42 -0500, Wayne.B
wrote: On Wed, 24 Nov 2004 11:42:17 GMT, Short Wave Sportfishing wrote: On Tue, 23 Nov 2004 23:31:35 -0500, Wayne.B wrote: Tom, anticipating that you were about to post pictures of your stern wave, I took a few of my own last Sunday. The one below was taken about a mile west of Sanibel Island while traveling about 2 knots over theoretical hull speed in a 60,000 pound boat. If you look closely you can see two dolphins swimming in the wake which I estimate to be about 3 feet in height at the stern of the boat. These are the kinds of wakes I just LOVE to run into on Narragansett Bay in my Ranger. LOOOOOOVE them.... :) ========================================= Yeah, you could get some serious air on that wake. Given what it costs me to produce it, I should charge admission :-) And I should charge for the back and ankle pain caused from landing after one of these sneak attacks. :) As it is I give everyone one free jump. If they annoy me in some way and make a turn for a second pass, I just slow down a couple of knots and take the fun away. I bet those lunatic PWC riders really enjoy it too. All the best, Tom -------------- "What the hell's the deal with this newsgroup... is there a computer terminal in the day room of some looney bin somewhere?" Bilgeman - circa 2004 |
On Wed, 24 Nov 2004 19:19:48 GMT, "Don White"
wrote: "Short Wave Sportfishing" wrote in message .. . Your boat is considerably different than mine - your wimpyness is hereby excused. For the nonce. :) Later, Inland lake sailors with the same boat as me..keep the boat a bit off shore on the anchor while stowing vehicle/trailer. Then then wade/swim out to the boat and use a boarding ladder. The North Atlantic tends to be a bit cooler than inland lakes...so this is a bit more uncomfortable. What kind of sailor do you have? Later, Tom |
"Don White" wrote in message ... "Short Wave Sportfishing" What kind of sailor do you have? Later, Glad you asked... I should mention ..it's a 1986 Sandpiper 565. ** http://sailquest.com/market/models/spipe.htm ** |
On Wed, 24 Nov 2004 21:26:29 GMT, "Don White"
wrote: "Short Wave Sportfishing" What kind of sailor do you have? Glad you asked... Neat little boat. Hard to rig? All the best, Tom -------------- "What the hell's the deal with this newsgroup... is there a computer terminal in the day room of some looney bin somewhere?" Bilgeman - circa 2004 |
"Short Wave Sportfishing" Neat little boat. Hard to rig? All the best, Thanks Tom. For two people...a snap. I set it up for single handed rigging because my crew (wife) isn't 100% reliable. I installed a couple of small padeyes forward of the large shroud padeyes in order to rig a loup. From these loups (starboard & port) I attach lines up as far as I can reach on the mast. All for lateral stability during raising. I made up a 'gin pole' and a mast support pole to help also. Launching by myself is tricky but doable. |
On Wed, 24 Nov 2004 22:58:14 GMT, "Don White"
wrote: "Short Wave Sportfishing" Neat little boat. Hard to rig? All the best, Thanks Tom. For two people...a snap. I set it up for single handed rigging because my crew (wife) isn't 100% reliable. I installed a couple of small padeyes forward of the large shroud padeyes in order to rig a loup. From these loups (starboard & port) I attach lines up as far as I can reach on the mast. All for lateral stability during raising. I made up a 'gin pole' and a mast support pole to help also. Launching by myself is tricky but doable. Where there is a will, there is a way. Nice boat. Later, Tom "Beware the one legged man in a butt kicking contest - he is there for a reason." Wun Hung Lo - date unknown |
On Wed, 24 Nov 2004 21:16:06 GMT, Short Wave Sportfishing
wrote: I bet those lunatic PWC riders really enjoy it too. =========================== Oh yes, they get their one free jump also. The old Bertram was a PWC magnet. Normally I would slow down after one jump just to get rid of them, but we had a couple of guys on the Hudson River once that were so good that I let them play for a while. They were literally making triple wave jumps. If you figure the crest distance to be roughly the water line length of the boat, that implies jump distances of around 90 feet or so. They followed me for over five miles and never got quite close enough to make a nuisance of themselves. |
On Wed, 24 Nov 2004 21:29:05 GMT, "Don White"
wrote: I should mention ..it's a 1986 Sandpiper 565. ** http://sailquest.com/market/models/spipe.htm ** =========================== Looks like a fun boat. Do you overnight on it? |
"Wayne.B" wrote in message ... On Wed, 24 Nov 2004 21:29:05 GMT, "Don White" wrote: I should mention ..it's a 1986 Sandpiper 565. ** http://sailquest.com/market/models/spipe.htm ** =========================== Looks like a fun boat. Do you overnight on it? I haven't yet..but lots do. Usually two adults or small families. i.e. pre teen kids. A regatta for the Sandpiper 565 is being planned for Georgian Bay area in Ontario next July. If I decide to trailer up the 2000 km one way, I might 'camp' in the boat on the way up and then sleep on it during the planned overnight cruise. |
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