May 2 3 Portsmouth to Yorktown and Lay Day There 34 9 Miles

Well it was not our fault, and no harm done at our 9:15 departure from the Tidewater Marina. The lovely young lady who works in the office came to help us off the dock. It is obvious that she had never done such a task before, though we did not know this. I asked her to take the bow line while Lene undid the stern line. We were port side to the dock with the wind blowing from that side. What our willing and cheerful helper should have done was hold the bow line and walk aft as we backed out after which she should have tossed the line on deck. The wind would then have blown our stern to starboard, so we would be able to back up a little further, turn left and motor out. But she just threw off the line on our deck immediately and when we backed out we drifted sideways to starboard in the narrow lane. Fortunately there was a turning basin down a bit, which she pointed out to us, and we were able to turn around in it and head out.
But the wind gods were not cooperating. The first part of the passage was essentially north, where the wind was coming from, and about 15 knots actual, (20 apparent). Also, we had a batten problem. The Velcro strap that holds the batten (flexible rod that stiffens the sail) in its pocket in the sail, was partially torn off and not holding. So the batten was sliding out and this was not good for the sail either, so no main sail use today.  We passed the Navy Bases Destroyer Pier from which I did my

Midshipmans cruise in 1964, aboard the USS Dewey. DLG 17. As time passes destroyers get bigger and bigger.
Aboard ILENE, we cut across the Thimble Shoal. But our course gradually curved around to the west till we were heading west up the mighty York River. We got to where we could put out sail and put out the small jib which gave us an extra knot. But when we got to the river itself, where a beam reach could have helped us, the wind gradually died, so it was a motoring day -- again!
Once on the mooring, Roger the Tailor sprang into action and the batten problem is fixed. I lowered the dink for the first time since Beaufort SC and connected the two parts of the new, stronger, wider, easier to use ratchet strap.  We dinked in, paid for our mooring and had dinner with Stan and Carol, at the Restaurant in the Marina. We celebrated his retirement after almost 50 years of teaching Genetics, most of them at William and Mary. I called it fine dining based on service, taste and presentation, but Lene, who likewise relished the food, says that fried food cant be fine dining though it was mighty fine to me. I did have a "wardrobe malfunction" trying to get properly shod before dinner. Both are red, they are jumbled in a locker and I didnt notice this until after dinner.

Our friends again drove in their two cars and left one for our use for the next day! They also brought us the box from Doyle Sails with the five plastic panels with which we can now enclose the cockpit. A very peaceful night.
In the morning, we dinked in, brought the box with the panels from the car via the dink to the boat and installed them. It will take some getting used to for me to be comfortable sailing with them on. The rear one has to be removed to lower and raise the dink. When the dink is down, one has to crawl out under the rear panel to the swim platform to board the dink. With the side panels on, the handles for the big winches for the Genoa sheets can only go half way around, slowing operations. Many of these issues can be resolved when we get back and Junior, of Doyle Sails, puts straps on from the top so that the panels can be rolled up, and fasteners between the aft end of the dodger and the forward end of the new cover need to be attached.

It was beautifully warm and sunny and the adjacent beach in the river got a lot of use. There was also a food festival on Saturday and one for art on Sunday.

We did laundry, bought some gifts, and did the shopping.











Lene dressed for dinner and I shot her by the two green excursion schooners docked at the marina.

In the evening went to dinner at the home of David and his family.
David is Stans son, who I saw last when he was an adolescent and an avid player of Dungeons and Dragons.

David, Lene, Me, Davids wife Wendy, their son Josh, Carol and Stan. Their daughter, Sam, soon  to graduate, is the best looking of the lot of us, by far, but she was the photographer.

Three generations were enjoying each other and we enjoyed them all. They did the best dry rubbed ribs I have ever had, corn bread etc., and it was a delicious home cooked meal. And another very quiet night on the mooring with a full moon.

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HYC Cruise Day 6 July 30 Lay Day in Block Island

Blasts crew rented a car to tour the Island, by day, dined at the National on a gift certificate and reported that it was excellent.

True North remained aboard during the day to make sure their anchor was holding in the big winds and came in for dinner at The Oar. 

Everyone from Ohana and ILENE (except Ilene) rented bikes from Aldos at the Boat Basin for the big loop of the southern half of the island. First major stop was at the beach at the foot of Mohegan Bluffs. 

There the younger generation went for a swim while Bennett and Roger took a long walk west along the beach. I dont think I have ever been there at low tide before. It reveals where one can swim without fear of being crushed against submerged rocks by the breakers. Then a brief stop at the lighthouse for liquid refreshments as defense against dehydration. There we learned of the imminent plan to build a "U" shaped cup of windmill generators around the southern end of the island a mile or two off shore. We had lunch at Finns, where Bennett satisfied his craving for whole fried clams and Roger ordered this new (for me) treat too. Then marketing at the very pricey local market before returning the bikes -- 1.5 hours late for a half day (4 hour) rental but they did not charge us the extra ten bucks -- and we dinked back, except for Rolo and Chris, who went to the beach and returned by launch later

Dinner on ILENE for eight: from Ohana, ILENE and Shanghai. A weird assortment of foods that somehow came together magically.  A rain shower required us to migrate from the cockpit to the cabin. CJ enthralled us with stories from his interesting life. We eight were from China, the U.S., Guatemala and Denmark, and included speakers of about ten different languages.  Most of our dinner table pics are after the meal; eating seems to always take precedence over photography until plates are empty.

Rolo, Christian, Laura and Bennett

Jenny, CJ, Lene and Roger

Shanghais dink motor failed on the way over so they came in tow. And I towed them back. Maybe we can create one fully operative dink between Shanghais inflatable and Ohanas outboard. But, in fact, it appears that all of the places both boats intend to visit on their ways back -- yes we are at our furthest point away from City Island -- have either docks or launch service. The other alternatives are the blissful solitude of staying aboard a well provisioned boat or getting a lift from strangers.

Stay tuned.

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Sewing Machine For Upholstery and Enclosure Canvas

A few years back,my girlfriend and I purchased a 1962 Singer Fashion Mate 237 from my aunt for a song.Soon after,I located an owners manual for the sewing machine on Ebay.Reading through it,I have found that the sewing machine is capable of doing upholstery and canvas sail cloth work.I was a bit surprised that the sewing machine is rated for canvas sailcloth.The sewing machine is heavy,around 80 pounds.I believe the body is cast steel.I know the internals are high quality precision machined steel,possibly hardened.I worked for a friend that did auto,rv,and marine upholstery.His father also owned a household upholstery shop.I worked for him when we didnt have work.At those two shops,I used a Pfaff and a Consew.I briefly had an auto upholstery shop where I leased some off brand sewing machine.It was a horible machine that wouldnt hold its timing and constantly bent or broke needles.Its not fun having a needle fly past your eye at sub light speed.Always wear safety glasses.Sounds goof,I know,but flying needles can be dangerous.Some of the newer industrial commercial machines have clear plastic glass guards to protect the operator.I dont need,nor can I afford,to go with an industrial sewing machine.

Recently,I had been looking into Sailrite sewing machines.I know that when I build my boat,I will want to do all the work I can myself.After viewing some of their sewing machines,I feel confident that my sewing machine will handle the job.I am not knocking Sailrite sewing machines.They are quality.My sewing machine may not have all the options and accessories as a Sailrite,but it is more than enough for the simplistic interior and canvas work that will be on my boat.I will have a few seat cushions,interior,and exterior window coverings.I wont have a flybridge to deal with covering and/or enclosing.I will enclose my rear deck.I will have a rack over my rear deck to carry my dinghy.My plan is to hang my canvas from the rack like the old external frame tents used in the 1950s and 60s.It will seal to the back of the cabin with a belt rail system similar to those used on Jeep CJs and Wranglers.All in all,there wont be as much sewing on my boat compared to something like a Bayliner of comparable dimensions.


Here are some pictures of my sewing machine.It came with a beat up cheapo cabinet.I will build a small table to set it in when I get ready to do the upholstery for my boat.



Here is the cabinet open.The sewing machine nestles down inside of it. Lifting the stand allows the sewing machine to rotate up and out of the cabinet. Here is the speed control(gas) pedal.It is aluminum with a plastic pedal. Here is the machine rotated up out of the cabinet.You can see all the precision steel machine work.Also visible is the date stamp,8162 or August 1,1962. This machine has a lot more options than first appears.About 60 different ways to set up for sewing.It will even do embroidery and buttons.Thats gotta be useful. Here is a picture of the built in light and the motor.Dont be fooled by the motors compact size,it got some power.

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Levi and Hugh

Last time these two gentlemen appeared in this blog was in late June 2013 aboard ILENE at the end of a lovely daysail amid the many islands of Boston Harbor.

Levi is Hughs grandson. Hugh and I, as junior officers, served together on the USS Hammerberg, DE-1015, back in 1967.
     They came to New York, Memorial Day weekend, for sightseeing and largely to explore New Yorks harbor islands. On Saturday they did the USS Intrepid and The High Line before coming to our house to rest up before dinner. When offered his choice of Vietnamese, Polish, Persian, Chinese, Deli, Italian, Indian or Ukranian, Levi asked for German, also within about half a mile of our house. I enjoyed Schnitzel, Red Cabbage and Spaetzele with them at Rolfs.
Next day I met them at Bowling Green after they had toured Liberty and Ellis Islands, to take the ferry to Governors Island, recently turned into a park after centuries of military use. As many as 5000 people worked on the island during wartime, and 60 percent of them lived on the island in various structures built during the nineteenth and twentieth centuries, many of which have been re-purposed for tourism.
     I had visited the island only once before, in 1968, when it was a major Coast Guard base. I took my division of men assigned to the Navy Reserve "surface training division" (no boat) at the Brooklyn Navy Yard, where I was assigned to complete my military reserve duty after two years of active duty. The reserve unit was sadly a joke and a waste of taxpayer money: men who were not motivated to train were supposed to be taught by Chief Petty Officers who were getting out and did not want to teach. So I looked for opportunities to avoid the boredom and the Governors Island visit, along with ones to the nearby South Street Seaport Museum and the Hayden Planetarium (to study navigation, of course), were our escape hatch to sanity. After a year of monthly weekend meetings during my first year of law school, we were all offered the opportunity to resign and I never looked back until my visit to the Governors Island with Hugh and Levi.
       A stream of visitors is debarking from the ferry. ($2 for the round trip passage, seniors half price, kids free -- a bargain!) and a view north up the mighty Hudson River is to the left.

The ferry is a small one compared to the Staten Island ferry and is seen behind the tree to the left, with its other terminal, on Manhattan, at the extreme left. To the extreme right can be seen the tall ships of the South Street Seaport Museum, to which my friends walked next.

They have done a great job of making the island into a city/national park. Tours are available of the two forts, the pentagonal one in the center of the island and one with a curved outer wall in the extreme northwest corner. The islands size was near doubled with landfill excavated a century ago from the tunnels through which subways now rush. There was lots of activity on the island with a gift shop an arts center, many food kiosks, several performances for kids, pop up galleries for art, clothing, and the Math Museum, and to the west, large fields for soccer with Lady Liberty as a spectator.

They also have a "grove" of hammocks, bicycle rentals (or you can bring your own) and bike paths.

Manhattans skyline  from above the carefully and diversely planted new trees on the island, with the new Freedom Tower to the left.
Governors Island is a fun place to visit for city dwellers and tourists alike. Hmm .... all they need here is a group of moorings and a dinghy dock!

But meanwhile progress in getting ILENE ready for her upcoming 17 month "season" (June 14 through October 15) is proceeding, but she is not quite ready to sail yet and other events keep interceding.

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505 Dinghy and Annapolis 2017

I wandered over to my old sailing club, Severn Sailing Association, on Sunday and ran into Ali Meller, just in from Laser frostbiting. Ali is a long time 505 racer and I was interested in finding out how preparations are going for Annapolis to host the 505 Worlds in September, 2017. The 505 fleet at SSA is relatively small, ten boats or so, and to take on such a high-profile regatta as the 505 Worlds must be a daunting task for such a small group. To pull this one off, the 505 fleet has gone out to the Annapolis sailing community. Two yacht clubs are sharing the responsibility in running the event, SSA and Eastport Yacht Club and the RC is being recruited from the best of Annapolis. Given the strength of the dollar Ali expects the Worlds fleet to be around one-hundred, which, for North America, is huge numbers for a two man high performance dinghy.

Below is a great 505 promotional video shot by Chris Love, who does all of the Intercollegiate sailing reporting in the U.S. Although the 505 aficionados interviewed in this video downplay the intensity of the class, make no mistake; to race at the top level in the 505 is just below the commitment of an Olympic campaign. A true fanatics performance class.




International 505 Promotional Video from Chris Love on Vimeo.

Two photos of the 505 from the Earwigoagin archives; these taken at a SSAs Tuesday night series a couple of years ago.

Photo John Zseleczky

Photo John Zseleczky

For those who have dug back in Earwigoagin, you may have come across the fact that the blogmeister raced Internatonal 14s back in the 1970s and early 1980s. The International 14 of those years was very similar to the 505, single trapeze, big symmetrical kite. The modern International 14 has developed into a skiff but I occasionally wonder what the International 14 would look like today if it stuck with the rig of the 1980s - probably very similar to the current 505. A photo of the Canadian Harvey brothers ripping it, I think in 1980 (just had to sneak this in).

Photo Ellie Martin

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November 7 Morehead City to Swansboro 20 4 miles

We headed off in the ICW through Bogue Sound and this is hard work because the sound is so wide and the deep channel so narrow. I ran us into the sand at one point but we dropped the sail and backed off. Yes, I tried to sail, using the small jib only, which gave us an extra knot or two, but the strong gusty wind blew us off the course auto pilot was trying to steer; and with trimming the sail came the inattention that led to the grounding.  So no more sailing today. 

We were underway from 9:30 to 1:30. Most of the way was a few degrees north or south of due west. Ilene called the Coast Guard who told us that the live shelling at Camp Lejeune would end at noon, hours before our arrival, so we could anchor at Mile Hammock Bay. But just a half mile after we passed Swansboro, “Pipe Dream,” which has overtaken us, was coming back the other way and told us that the live firing would continue until 5, too late for us to arrive there. So we too did a “U” turn and anchored in Swansboro.

The pencil is pointing to the white spot to the right of the town, where we are anchored. In the lower left, just below the line "X---X", is a magenta line labelled "St M 230" (Statute Mile 230 since Norfolk), running perpendicular to the double dash bordered magenta line indicating the route of the ICW, which shows how crooked it is. And below the knife blade in the lower right corner it says Bogue Inlet, through which, in the photo below, we saw out to the Atlantic for the first time since Cape May, NJ.

We also saw the dramatic effect of the swift running tide. It was ebbing  and as we came to the Inlet our speed picked up to 6.6 knots, only to drop to 4.2 knots as soon as we passed the inlet when the same outgoing tide was running against us.

Here in Swansboro we  are one of eight boats and are on 80 feet of chain in 17 feet of water. The big factor here is the tide which caused us to face the other way when it changed. We happened to anchor next to “Island Time” and used our dink for the first time on this cruise – I’ve been out a month today! The town is quant but we failed to find a postcard though we did find this Gekko,

made from the steel top of a 55 gallon drum, at a gallery.














This house was built in 1778.

   Here were ashore, our heads framing ILENE.

Tomorrow is a long day to Wrightsville Beach, almost 47 miles. So its early to bed.

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Applying Thermal Imaging To Metal Boats

Applying Thermal Imaging To Metal Boats

This was a topic that fellow marine surveyor Jack Allinson and I presented at the 2013 IBEX ( International Boatbuilders Exhibition & Conference). I am new to thermal imaging, but over the past year Jack Allinson has proven its worth when it comes to metal boats. Mr. Allinson has been applying thermal imaging to marine surveying since 2003. Here at DBYS I am working on my Level 1 certification and have acquired a Flir Thermal Imager to add to my tool box for my metal boat inspections. Thermal imaging or also known as Infared Thermography, has been used in factory inspections, home inspections and marine surveying of composite boats for years.
When we apply it to metal boats it gives us  "better set of eyes" along with visual inspection and audio gauging. We have found that often where thermal anomalies are found there is trapped moisture and/or corrosion, and paint voids. One of the benefits is the ability to see the structure of the boat and location of the tanks. I find this very helpful to speed up my layout for UT/audio gauge inspection 

  From our presentation:
Infrared thermal imaging and correct interpretations of surface thermal patterns can be a real boon to cost-conscious clients keen on the price point required to find metal wastage, trapped and hidden moisture, and to document the water routes (trails) created when dewatering a vessel. On most UTM jobs, as much as 60% of the work effort goes into planning and implementing where to take the random spot checks for plating thickness. With the right environmental conditions this work can be easily reduced by half by scanning the shell plate with an infrared thermal imager.

 

In the images below the transverse framing and longitudinal stringers are visible.  I will post other photos at a later date that I have been able to locate corrosion.

Steel Brewer Schooner

Steel Dix 47

Steel Dix 47

Aluminum Utility Boat

 

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November 10 12 Three Lay Days in Charleston Zero miles

A municipal manhole cover. Carol is Greek (or Latin?) for Charles and Polis, as in Annapolis or Metropolis, is city or town, hence Charleston, founded in 1670.

There are only three requirements if you want to cruise like we do, the other things are subsidiary. One is time. You need to be retired or independently wealthy or on a sabbatical or unemployed.  Second is money. Not a lot, but you need to buy a boat and maintain and provision it. And third, but no less important than the other two, is good health. On arrival here I thought we had run out of good luck with the third requirement. Lene was bent over with excruciating pain in her left knee. Every few steps was an attack of acute pain. We cant go on like this I thought. She cant climb over life lines and take big steps down from deck level to dock level or transfer between boat and dink.

I told her that we could haul the boat in a yard here in Charleston for the winter, fly home, get the medical problem fixed and come back here next spring and sail ILENE back to New York. The end of the adventure. But then I thought, before such a drastic decision lets get some medical advice. We consulted with our friend Bill, in Oriental, who is a retired Orthopedist. We took a cab to Roper Hospital where x-rays were taken by the ER doctor who gave us a referral for an ASAP visit with an orthopedist on their staff. The ER physician also gave Lene a soft splint, held in place by foam rubber and velcro, which essentially immobilized the knee, causing a very wobbly gait but the absence of the pain, and a prescription for anti inflammatory/pain killers. And these really helped a lot and Lene was walking, slowly but without pain, up to 3/4 of a mile each way. The orthopedist told her to "sail on," resting the knee when possible and using the pills and splint as needed. Her condition has a fancy name and is exacerbated by cold weather. Surgery, replacement and even cortisone can wait. Here is our sick bay, notice the flowers, and the gekko, to the right, below the clock, with short bits of weatherstripping hidden behind it so as not to mar the cherry wood. He will be a reminder of both our Carribean adventure and this trip.

Fortunately,we had spent a week here in the Spring of 2012 and seen most of the major sights, and can stop here again on the way home, because we did no sightseeing on this trip. We did laundry (it is free for boaters in this municipal marina, The Charleston Maritime Center, purchased a new Ipad to replace the one I ruined with salt water in the Chesapeake, and grocery shopped in Harris Teeters, a pretty good supermarket. We took a walk among the historic homes here

(notice my shorts; a warm day at last!) to

 a memorable lunch at Jestines with great inexpensive southern cooking and named after a domestic servant who died in 1997 at age 112, the daughter of an ex slave and a Native American. Jestine worked for a southern family for many years and the restaurant is owned by a descendant of that family. The Reverend Brown of the nearby Methodist Church and the financial secretary of the church recommended the fried chicken which Lene enjoyed and I had, among other things, fried chicken livers, fried okra, corn bread with butter and honey and southern pecan pie.

And of course there is always boat work: ILENE had a bath, her water tanks filled, her fuel tanks poisoned to prevent the growth of microorganisms that clog the fuel lines, gluing back one of the buttons that hold plexiglass panels in place against the screens of the cafe doors with gorilla glue and the top of the percolator lid with JB Weld, a metal to metal glue that is remarkably strong.

But the two biggest problems required the help of Dr. Bill, who, I told him, enjoys fixing boats almost as much as fixing peoples bones. As to the auto pilot, the most expensive component is the motor with linear drive -- the thinner rod to the left goes in and out of the thicker rod to the right, and pulls the rudder to steer the boat. The squeaking and beeping is a $ign of old age and thiS drive will have to be replaced $oon. Its kind of amazing that a guy who is 6 3" could contort his body to reach this place to copy down the serial numbers. Replacing the unit will be harder, but once replaced this one will be rebuilt and used as a spare.

The other problem was the lack of charge into the starting battery. Its sole purpose is to power the starter motor which turns on  the engine. So it discharges only for less than a second each time, but it uses a huge amount of power when it does. And the problem was that it was not being charged by any of the solar panels, the engine or shore power. So the voltage had gradually reached the very low level of only 12 volts. Bill talked me through a series of tests, via phone, which showed that either ILENE does not have a needed "combiner" or that component is not working.  The short answer is that periodically, when we are (A) on shore power with the built in battery charger turned on, or (B) running the engine, we have to combine the starting battery with the "house bank" (which consists of 6 six volt golf cart batteries), so that the starting battery can get charged. This is easily done using a small red plastic key.  Last winter the old starting battery died because I did not know this and erroneously assumed that when I hooked the boat to shore power with the battery charger on, it was charging both batteries. So many lessons to be learned. Thanks again Bill.

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Boatbuilding Lark Scow Part 1

Other posts on the Lark scow.

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Peter Gilbert of the Erieau Lark fleet in Canada has started a new Lark scow (named Pinky Too, his Dad built Pinky 2 and Pinky 3) using the Kerr plans. He sends along some photos. The Kerr plans follow the original C.G. Davis plans in using a lot of frames. Instead of sawn frames, Peter has laminated the arc sections. He is planking the bottom of the Lark with plywood but with a hi-tech twist; he is using 3mm plywood with a carbon fiber sheathing (I wonder how this will square with the Erieau Y.C fleet as Peters construction may possibly result in a Lark considerably lighter than the current boats.)

I like how these builders determine fairness using a full glass of beer as a sight-line.

The solid timber side planks hold everything together before the bottom and deck goes on.

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January 1 16 New York Boat Show and One Work Day

This was a really crappy boat show, for sailors -- not even one sailing dinghy! It was purely a power boat show and even the large vendors of electronics and other chandlery supplies had given this show a pass. But the Club manned a booth. Like most clubs, we need new members and use the show to strike up conversations, invite the prospects to an open house and permit the Club, with its great location, its facilities and its friendly members to sell itself. Last winter I was in Florida  and not able to help. So I volunteered for a double shift - noon to nine. I used New York Citys newest, one month old, extension of the number 7 line from Grand Central Station to get to a new station, a block from the Javits Convention Center -- at Eleventh Avenue and 34th Street. The show was not in the large southern pavilion of the Center as in the past, but in its central pavilion.

Peter, our Rear Commodore, who has a ton of leadership ability and energy, worked with me the first half, replaced by Phillip, our Race Chairman and Jill at around 4:30.  In these shows we always have more than one person at our booth so everyone an get relief periods to eat and explore the show a bit. PC Art was working on the other side of the hall, selling power yachts, but came over to say hello, and Bill, our Board Member responsible for the Restaurant and Bar, helped for a while too.

                                Bill, me, Jill and Phillip at the booth.
And while there was a long line of folks waiting to be let in at noon, the crowd had thinned so I was released at 8 p.m.

One of the only two things I did for ILENE at the show was to figure out how to send our EPIRB out for a battery replacement, after five years in readiness - which I call use. This being the toy that alerts the Coast Guard to come rescue us, we are fortunate not to have actually "used" it. And its the kind of thing you want to have a nice strong battery, in case. I have to send it off in time to get it back before we leave for Nova Scotia in June. The other thing was to contract for the installation of a faux teak deck to be measured, cut and installed on the swim platform. This area is quite small and rather ratty looking and I figured out how to install it by removing the folding retractable swim ladder and reinstalling it atop the new decking.

The reasons for only one day of boat work during this period were first that my back had gone out a bit and second that winter has indeed finally arrived in New York. But the one warm day I worked with mechanic Ed, for six hours. Thats twelve man hours. The results: both it ILENEs two large "primary" winches were disassembled, all parts had all old grease scraped off and then scrubbed with a toothbrush in a bucket with paint thinner to get what couldnt be scraped. Once clean, the parts were dried, regreased and reassembled. The book says this should be done annually! After 17 years, the last five with heavy use, these workhorses were overdue for the TLC they got. The other two winches that Im going to do are those on the coach roof. (I dont think I have to do the fifth winch, the one on the mast, because it gets so very little use.) The next two are smaller and with the benefit of our learning curve, should not take as long.  Having learned a lot from watching Ed, Im thinking of trying to do these myself, taking off the parts and cleaning them in an indoor location. Then will come the steering and some electrical work, with Ed.
And here is a picture of ILENEs mate, just cause I like looking at her.

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Jet Propulsion for hydrofoil or maybe a prop and flex shaft

Very cool control system



The drive with the angle reduced improves losses 20% 4.3 Amps idling so only 300mA losses from the shaft. I think the steering should be integrated as a kitchen rudder behind the prop.

Reversing the shaft on a Turnigy D3542/4 Aero drive It a 1450 KV and should deliver loads of torque at 14,000 RPM on as 3C

Battery: 2~4 Cell /7.4~14.8VRPM: 1450kvMax current: 48A No load current: 4AMax power: 690WInternal resistance: 0.019 ohmWeight: 130g (including connectors)Diameter of shaft: 5mmDimensions: 35x42m

Above is a 47 mm prop I have a 57 to once I have the motor attached to the shaft sleeve I will do a power test in a tank see what thrust and Amps I get. With the fat end of 1 HP it should have plenty of clog to lift  it up on the foils.

The shaft is running in a good quantity of copper slip. Ran it on a 4C for a minute an the brass only got warm.

I think the body of the hydrofoil will be a lunch box. I think I will have the prop shaft attached to the rear foil

Perhaps the prop on the above can be placed in a tube like these designs

An interesting jet outboard very high outlet must cost power

Jet Propulsion for hydrofoil  




One thing as there is no transom the bulky scroll will always be in the flow and the outlet will be under water which will reduce the trust considerably.

If the outlet was up high it would work better also the riser would need to be streamlined






Or what about an EDF pumping air into a venturi like below

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