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Wommasehn

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Everything posted by Wommasehn

  1. In the Main Forum, I posted a thread about Mucklas new rudder and I promised to tell you how and why it became necessary to make a new one. Here's the strory. Every year in the autumn, I get a week off for single handed cruising , normally on Lake Constance. Lake Constance is'nt just the only body of water big enough for cruising in the region where I live, it is also very beautiful with picturesque and neatly kept up towns and villages all around and rolling hills covered in forests, fields and vineyards. To the south-east, there is the majestic backdrop of The Alpes. The lake is 63 km long and 14 km wide; there are ports and marinas aplenty . People of former days liked the region too so everything oozes history - from remains of stone age settlements (and a splendid open air museum of replicas) through findings of the Romans, medeival- als well as baroque castles and churches to more modern developments such as the Zeppelin-Museum and aircraft industry. Lake Constance is an international body of water with parts of the shoreline belonging to Swizzerland, to Austria and to Germany respectively. It is also the souce of drinking water for several millions of people. All this surely makes it understanable that there are strict rules for boating (and everything else) even though not each and every of these make sense to everybody. Last year I had to re-certify Muckla. She was examined, particularly the emergency-equipment and found good. It was a sunny day with a light breeze. After I had got my certificate and sticker, I cast off and headed SE for Wasserburg under a light westerly breeze. Slowly the wind picked up and I enjoyed a quick deep reach. As there were some heavy clouds, I donned my foul weather gear including PFD and sailed on, now and then in full planing mode. Due to that course, it took me some time to realize how strong the wind meanwhile was. After a jibe, a strong gust hit me and made her luff up and heel over a lot. With my dinghy sailer-reflexes, I dumped both sheets and rolled in the jib (well, almost, there remained a small proportion open, enough to make tremendous noise). Then, under mainsail alone, I wanted to round her up into the wind to douse or at least reef the main. But she refused. I tried many times but she always came from a run only to a beam reach but I did'nt bring her into the wind. With the mainsail flogging, she still heeled so much that I did'nd dare to leave my position on the side deck for fear of capsizing. I tried to start the electric motor but its cable had wriggled loose and so it did'nt work. To get it running, I would have to open an inspection port in the cockpit and use both hands which seemed too dangerous in the given situation. So I had the choice of either running into port at planing speed, hoping to find calmer water and less wind and thus better maneuverability and at the same time fearing to hit something hard and expensive like a boat on a mooring - or otherwise drift sideways onto the shore. Then there was a crack and the rudder was broken. This left me (so I felt) without any choice. I was really scared. I had to actively convince myself that my life was not at risk but only my beloved boat. And all the emergency equippment that I have to carry along was absolutely useless. Now, even beeing scared, I am not the type to just do nothing. Since there was no rudder left to work with, I stood on the side deck, hooked my left arm around the windward shroud and, in between the gutst, reached with my right hand for the mainsail's tack and pulled for a few seconds. So very slowly, I got the mainsail down. Of course this did'nt prevent it from playing mischief - but it was mischief with little leverage and manageble. Now I could fix the motor and drive into port. When I had finally tied her up and fastened the sails, disaster made another attempt: I lost my mobile phone. I thougt, I couldnt even tell my wife - but then I found it lying on the jetty. Only then it occured to me, that I might have got her into the wind if I had dared to sheet in the main a little to give her enough drive against the chop to roud up. Who knows - maybe the old rudder would still be there by now. I went to a restaurant for dinner (as I always do on my cruises) and phoned my wife. The night was not quiet. Neither was the water nor the boat, let alone my soul. I thougt of motoring back (would there be enough power in the battery ?) or of several ways of repairing the rudder. The following mornig was calm and sunny and my mood had improved a lot. Of course, I would repair and proceed my jouney. As everyone knows, on an old wooden boat there must be a well filled tool box. But as everyone also knows, there isnt much space for tools on an old wooden and small boat. My solution is carrying smallish tools, partyl childrens tools (some of them are really from my childhood days). One is a egg-beater-style hand drill. With this, I drilled a new pivot hole in the broken rudder blade, having removed the small upper part, fixed the position with a bolt to prevent it from swinging up and a webbing strap to prevent it from swinging forward. And I was ready to go. Apart from the rudder, the jib was damaged too, so I changed to the genoa. Muckla behaved almost as normal with the smaller rudder and I went on cruising for the rest of the week. The repaired boat in Wasserburg-harbour The front before it reached me. Strangely, the gale-warning lights did not flash.
  2. Well, its been a while now..... Andy, I hope ,it is not too late for a thanks for your input. As for the amount of work, you're propably right. The glue-lines have actually been a great help in shaping the rudder - but then again the glassing took a lot of time.... As for the size - even this seems to lie in the eye of the beholder. At 124x30 cm it is a lot bigger than the dinghy rudders, I used to know before I bought this boat. By end of May, I finally launched her - only to discover that she leaked. Only a little but as we were about to go for a 2 weeks holiday on the island of Korsika this would have meant to leve her unattended in the water for 3 or 4 weeks. This seemed a little risky to me so I ground my teeth and took her the 2 hrs drive back home. The trip to Korsika was phantastic. The leak was between the stainless bushing of the CB-pivot (it has a flange) and the surrounding plywood. This spot had leaked before. I had tried to fix that with thikened epoxy but obviously this was'nt sufficient. Off course , the leak was somewhere close to the bottom plank where you can neither see nor work properly. I ground the tip of my welding hammer to a sharp point and used that to chip the epoxy away. There really was some kind of void - and there must have been a crack or so between steel and plywood. I applied "Capt Tolleys Creeping Crack Cure" (I love that name and the stuff too) and then epoxy again. All in all, it was'nt before middle of July before I finally had her in the water. Tight and with a new rudder blade. Short season this year. The rudder works fine. Only at some speeds it starts humming. I'm not quite sure if its grip is really better than the old ones when she heels over - but anyway in the gusts, I have encountered so far, the steering was perfect.
  3. Hi Randy, I'm using a Epropulsion Spirit. The older version with 1000Wh-battery. I like it very much and am glad that I bought it. As for the battery with its weight, I bought two special extenson cables (allthough they are very expensive) which enable me to put the battery in the cabin under the bunks. So it can fulfill its second job as part of the ballast - and it is out of view from possible thieves. The clamp-thing that normally holds the battery on top of the motor is covered by a wooden "hat" which also is the handle to tilt the motor upwards. For more details and pictures, you can look up a thread about electric motors in the Main Forum that ran from Sept 2019 to July 2020.
  4. Hi Chick, this looks really cute! Would you like, telling us a bit more about these mini-boats ? where and for what you plan to use them, what kind of motor etc? Stay healthy Tobias
  5. Slowly I'm getting on....... As for my initial question, the lateral form, I decided to give it a moderate elliptical shape. The additional area is in the lower half at the trailing edge. To compensate for the larger area aft, I put the semi circle (which is inside the rudder-head and includes the pivot) a little aft too. The result is that most of the rudder moves a tad forward , thus providing a little more balance. I hope that the sailing characteristics will remain the same all in all - apart from improved rudder-bite when heeled. Then I glued the two half-blanks together. When I took off the clamps, I found that the whole thing was bent....... Having done the necessary cursing, I did a lot more of shaping the profile plus straightening the whole thing, mostly by hand-planing, until it looked/felt good enough. I used a negative template for the NACA-profile. For attaching the haul up , I made a tag of copper and rivetet it to the trailing edge. Here is the dry fit with the old blade for comparison. (For whatever reason, I still can't fit a picture inside the text) Meanwhile, I epoxied and glassed the whole thing and put on two coats of primer. So its mostly ready.
  6. Peter, thanks for your reply and thoughts. As for the material, I had thought about that , but decided otherwise because building with solid staves is much more time consuming - and time is crucial for me ( I have to work a real lot). And then the old rudder blade had lasted for some 25 years, made of plywood and not glassed. So I hope that the new one will have sufficient strength when I glass it over and make a more gradual transition from the rectangular section which is inside the rudder head to the profiled main part which gets immersed. Thus creating less of a weak spot (where the old blade has broken as you can see on the photo). Cheers Tobias
  7. Hi everybody, Muckla needs a new rudder blade, the old one broke on my autumn-cruise (maybe I'll write down how and post it in the Boating and Cruising Stories). I bought marine ply and started building the new blade. Now that I've got to do that, I'd like to make a better one. This means a stronger onde above all - but at times, when she heeled, the old rudder lost its bite. I don't like to have a longer blade as this would give more leverage and thus a higher risk of braking again - but I think, it should have a greater area towards the lower end. As for the profile, I have setteled for NACA 0012 and even started ro route my half-blanks to that profile (see pic). But I am unsure about the shape (sidewise-view). The old blade has this elliptical shape which is said to have little drag. Any ideas about how much more drag I might get when I make a fatter ellipse or even a straight downward side like on the Lasers appendages? I recall having read a contribution of the late PAR about that, stating that the elliptical shape would'nt be that much better - but I can't find it any more. So who knows more??
  8. hi Sanmi, my boat is a 20 ft centerboarder with a small cabin. In case you want further information: I wrote more about her in the main forum in Jan. 2019. The extension cable comes only in 2 meter-lengths. First I bought one which allowed to stow the battery under the side deck near the forward end of the cockpit. Better than above the transom but I was'nt completely happy with that. So I bought another 2 m and now I keep it in the cabin, There is a doubble-berth going from side to side and the battery sits under that on top of the keelson, thus contributing to the ballast. The Epropulsion-battery is in fact easy to install (I think, its quite similar to Torqueedo), so keeping it at some convenient place and putting it on if necessary seems quite sensible to me.
  9. for my Epropulsion spirit, I bought an extension to move the battery and it’s weight more forward & downward. This works well - but a special cable with special connections is required and they are disgustingly expensive. As I definitely wanted to move that weight and didn’t dare to extend those nine pin cables myself, I dug into my wallet.... All in all, I‘m quite happy with the electric OB even though it has lately let me down due to a loose connection (which after all was my own fault)
  10. I may be late on this topic. Some time ago, I asked about using pure citric acid for cleaning epoxy. From the replies then, I gathered that it hasn’t been tried by many. So I gave it a go. Works fine for me, doesn’t stink and it’s cheaply available - here at least. It comes as a powder to be mixed with water. No idea if it penetrates the skin but it is definitely easy to wash away.
  11. Glad that it didnt turn out worse and glad you shared this story. This about forgetting things: When I bought Muckla, my Diabolo, in 2009, she was in the water. I had a cold but sunny week of autumn cruising on Chiemsee in her before I took her out of the water and brought her home. So pulling her out, unrigging and trailering was all new to me. I was amazed, how hard it was to winch her on the trailer until I heared a crack and realized that I had forgotten to hoist the CB up. So the first repair was due to stupidity. Lesson learned, I thought - until it happened again this year.... Mucklas CB does have a downhaul, which I reguarly forget to uncleat when I should. I am not shure if this could prevent the CB from falling back and damaging the CB-trunk if she really capsized - but that's the reason why I always cleat it. I hope, I can never report if it does.
  12. I have the same motor (only a smaller battery) and I am quite happy with it for my 20 footer. Epropulsion as well as Torqueedo both sell a smaller version which might be sufficient for the Spindrift
  13. thanks Chick for reminding me. Read yesterday and enjoyed it very much. Please give my regards to the Old Codger who seems to be quite young at heart - in spite of his name. Maybe like his creator and maybe like most of us??? My dear wife at least was a bit surprised to hear that others speak with- and about their boats like that too ( she herself is a master in wording our dog’s thoughts though)
  14. I have seen it - and it looks really great. Congratulations to your umpteenth build!
  15. I agree with everything said in these posts. Only as for the vac I‘m ambivalent as it’s a nuisance for me. But dust is a nuisance too - and an unhealthy one. So you got to find some kind of balance between them. I love especially my vintage hand tools. As for planers, you certainly don’t need to copy my collection..... But apart from a good standard block plane, I strongly recommend the tiny pocket planer in the foreground. It’s not only cute but really very versatile. One of the things you often use, once you own them
  16. well, I have to admit that I did‘nt try this. I‘m only thinking/fantasizing. And this is what comes to mind: If it’s badly damaged, you can pull it off or grind /sand the remains away. If it is not badly damaged, you can leave it as it is - or give it a coat of epoxy - or patch it up with some similar stuff. No big deal in any case. Of course, some metal strip would be much more durable. But also much more work and cost. And the problem of how to fasten it - as this thread shows.
  17. why not the „Rope Trick“ or maybe modified as a „webbing trick“ , that‘s some hefty strap soaked in epoxy? Should be easily replaceable if necessary.
  18. Meanwhile, it occured to me that 1/2 throttle might mean different things: I understood it as half power, that's the 500 W. If someone means "half speed", that's with Muckla 2.5 kts or something like 200 W only. Counting like this, you will get a lot more range....
  19. Thanks. I do enjoy the vacation in Denmark very much. Having time with my wife is still among the best things possible, even after 32 years. And furthermore I brought my inflatable kayak . So some time on the water is guaranteed
  20. To start with your last question: no, I can't. I'm away on vacancies without the boat. When I go sailing the next time, I hope, I'll remember to bring something to measure the motor..... Yes, the motor indiates the watts deployed, for my last post, I have defined 572 00 W as halft throttle. My battery is the smaller one with 1000 Wh - and 1 hour runtime at full throttle when fully charged. Anyhow, 10 hrs. 1 at /2 thr. really seems a bit too much . It does not tell me the speed but the remaining run time at a given throttle setting. And the voltage and a rough percentege of battery charge.
  21. @ Joe: interestingly the prop's pitch is not in the paper manual I got with the motor but in the Www-version. Meanwhile, I tried the speed at half throttle , that's 500 W. The GPS showed just 4 kts, the battery was about 65% charged and the display showed a range of about 1h15. So my estimate of 90 minutes at 4.5 kts with fully charged battery was maybe too low or certainly a very conservative guess. In 4 or 5 hours of charging with the solar panel, the charge level was raised some 10%. In other words: charging the empty battery by solar panel would take several days of sunshine but if its about refilling the electricity used for a few minutes of motoring, the thing is completely adequate. I am still not sure if it is advisable to leave it on for weeks while I am away from the boat. Where I keep her during most of the season, there is no shore power available. But this is a small lake and there is no need for motoring long.
  22. my motor is "only" the Spirit 1.0 without the "plus". Thats the 1000Wh battery. Besides in calms, I use it to get in and out of harbour/marina/port/dock - (what are the differences?) and I also see it as a safety-feature as it should get me out of danger if I can't make that by wind power. I've had such situations. That is one reason why I would'nt like to get it out of some compartment before using it, the other reason is the weight and the 3rd the difficulty of finding such a compartment on board of Muckla. So it is the bracket on the transom. The cable to the battery is no major problem so far. There is a hole in an inspection port in the cockpit-wall, through which the plug fits and to further close it off, I carved a groove in an champagne-cork. The cable fits in the groove and the cork fits in the hole. The champange disappeared somewhere.....
  23. Thanks for reminding me. yes, its ready. All the edges cut and / or rounded over, some eposy-sculpturing at the new upper-forward end of the CB-trunk and the hanging knees and lots of sandig, varnishing, painting. Meanwhile, I could try it out on a 5 days-cruise on Lake Constance (together with the new electric OB). Was it worth all the work ? - its hard to say - but shurely, it is an improvement in usable space and in looks. I liked to wake up in the mornings under the freshly painted/varnished cabin roof and with a few centimetres more of space. I wonder if anyone can spot the differences between the before- and the after- pics.
  24. The battery is the original (see pic from a sellers website ). 1000Wh, 46 V. The cable is a fancy thing with 8 pins and some electronic communication going on. As I know nothing about that, I rather bought the original. The solar panel seems only to charge it in full sunlight . You were asking about my boat. She is a Diabolo, a 6m centerboarder. I wrote an extensive description in my post „Reading sailing characteristics....“ (just in case you like to know more about her). The Epropulsions sound is a soft kind of humming, like a comforting „don’t worry, I’m here“
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