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Everything posted by allweather

  1. Oh okay, then I simply misunderstood what you meant on account on not being familiar with the spiro fitting(term) as such. The H-boat already stores the spi pole on the boom generally. Albeit without the automatic retrival. And I am somewhat familiar with the system on a 505 so adapting seemed a good opportunity. But I am just not sure about the loads considering we are talking about a 1,5t dry weight H-boat and 35sqm spi.(heavier since I carry a lot of stuff when going outside the bay and it being an old hull with all its gains) Otherwise going for twin poles and updating to carbon whi
  2. While I do have space for two poles, the H-boat doesn't really have the space/equipment to use them the usual way. At least not if I am thinking of the same thing right now. Seeing how there are no guys(which I could add but preferable wouldn't) or winches to mount them to.(the sticker) Also no mast car or space on the foredeck where they could lie. Could you please clarify what you mean with twin poles?
  3. Has anyone experience with trying to mount a self launching spi pole(like the twin system the 505er use well) on a larger boat? I don't really need it on my small H-boat, but there are often enough moments I'd prefer not to have to leave the cockpit while gybing with spinnaker. While managable with planning and in general a quick affair(afterall just two steps forward under autopilot), not having to would be very nice to have. As is getting the pole in and out is always the biggest hassle once some waves come into the equation. Usually I do it while sailing upwind since the boat is more
  4. Thanks for reminding me of that incident. Took another look at the report but haven't seen a later investigation/statement by mastervolt. That white smoke they described was very likely the elektrolyte venting after short circuit. Fire is not really likely though the concern from the crew is understandable. Either way you do need to leave the cabin because those fumes are toxic.(hydrogenfluor) They are also flammable which is a concern if you have an ignition source! However to me it also shows the kind of abuse it takes to set the batteries on fire. They had to be submerged for hours i
  5. Thanks for the response. Isn't that what main fuses are for? As mandated right at the battery terminal(distance in centimeters) by every instruction I ever found on battery installation.(on boats) It would still kill your power though with all the complications that can cause. But well, there are limits to what you can do ultimately. I suppose on a new build it is easy to build watertight compartments for batteries.(sealing floorboards with large gaskets comes to mind) On older ones issue is more about finding space to fit practical cell sizes into. You could use some of the sma
  6. Why specifically? I mean, I can imagine some, but what are you thinking of? Right now pretty much all systems in that range go for 48V due to peripherals. Unless you're going for even larger installations/power boats but then you get professionals to do it for you and solutions to concerns already exists at the price point. Both commercially(ferries) and in leisure craft.(though in the latter often driven by powerful generators)
  7. Little bit of clarification on lifepo4 to avoid further misconceptions. Said chemistry is quite a bit less lively(self destructive) and tolerant than the batteries used in cars or planes. Those come with benefits in cost, energy density or power. Usually some combination. Lifepo4 cells are tested quite well and most certified to not even catch fire after 60 minutes submersion in saltwater. The only cases of thermal runaway/elektrolyte of fire I am aware of relate to gross mishandling. Typically overcharging until they catch fire. More likely they get hot, bloat and vent electrolyte b
  8. I‘ll expect a little lower watts for same speed actually. A bit difficult to figure out what will end up being positive or detrimental to speed though. While under motor the pod should not have any more drag than the outboard dragging through the water. However the pod is quite a bit deeper below the surface. Usually you lose some power with outboard/surface interaction. Will be interesting how if any difference will show once you‘re in the water.
  9. Part is definitely yachting markup. Other I would say car batteries are just uncharacteristically cheap while maintaining quality. Bought with their large bulk buying ability. You can grab lifepo at 140/kWh or so and build your own. But getting a reliable seller from china that delivers quality? A bit about knowing where to buy and a bit luck. Meanwhile the maritime companies are small order built batteries(not great economy of scale like booming car batteries) and need to do the importing, checking for quality and give actual guaranties on their product. Will be interesting to
  10. Quick, turn on the engine.... Oh wait, battery is empty. The bringing part may actually be the crucial bit. I already have all the gear and am at the club regularly. That means I have on occasion just walked down a dock and asked for a boat to go sailing on. And worked. (though usually when one owner deceided to sit out the day due to stormy conditions and I quickly needed another ride) The barrier for one in the sport already is not that high. Though walking around a club and asking various owners is something I do still recommend when it comes to finding a boat for a beer can r
  11. Does show. Always glad to read an expert's opinion on events but also with practical insight. Upwind really is the easiest with how fast a boat can be slowed once you put it into irons. Had not considered how even someone with very little practice can do it. But even for a capable sailor leaving the jib as is and only adjusting main sheet(for some boats to help things along) does come in handy when you're the only one left aboard. Especially with bigger boats I find that maneuvers can get quite taxing if you need to do multiple tacks in short order afterall. My experience, mostly l
  12. Got to remember and qualify though that LFP does not tend to fail catastrophically. Depending on situation the ten percent or more capacity loss can mean that you want to replace them, like with the high grade car cells, or can life with the reduction in capacity as seen with solar banks where the reduction has little impact. I‘d say for boats it is somewhere in the middle. At least for the medium range, shore power in reach, or less boats electric currently makes sense for. Carrying dead weight in batteries with less degraded capacity isn‘t great, but the impact is probably nowhere near
  13. Nice. Sounds like you'll have it ready and tested for the coming season. Going to look forward to your experience with it. Especially compared to your previous outboard!
  14. Have to remembter that often enough old folks are the final decision makers as they are the boss. And sentimentality can delay modernization like that quite a bit. Always remember an article I read somewhere on how engineers in the nineties proposed getting rid of car mirrors and use tiny cameras instead. Which would have done A LOT for fuel efficiency. But according to leadership it didn't look right. Which brings me to getting rid of the steering wheel now that everything is electrically linked anyway. We may just jump right past that with the advent of self driving cars. Though oth
  15. I didn't expect that. Have virtually no experience cooking with an induction cooking plate. At least when it comes to measuring how much watthours it actually takes for a simple meal and highballed it. Apparently wrongly so. Have you measured what you need for an average meal?(I do have a plate for the office. Time to track my power use next time)
  16. There are (successful) projects to do just that too. So it is not all bad. For example Hamburg produces megwatthours of biogas over the year from wastewater treatment. That is pretty great and I hope it the technology spreads quickly. Literally turning crap to power... But to tie things back to the original thread topic. Using electric power to cook is probably quite a ways away yet because of how much power you need to warm food. Heating as well. One should be able to cover those with bio fuel eventually.(not clear on availability right now. Most stuff is just fossil byproducts I think
  17. I had not noticed that yet? I know Germany is still exporting food crops and some hailed turning over production to fuel as a... reasonable transition measure. Plus how to pay subventions to the agrar industry and actually get something out of it. (some have also talked about how instead of feeding cows and pigs for meat production that is problematic for the environment as well we may as well turn it to fuel that is somewhat more neutral) Have food prices increased with the appearance of bio fuel or is it just correlation, not causation? I know here some is down to increased regulation
  18. Thanks for that link. Was a very educating read on real world scenarios and what worked or didn't.(case 81 in particualr was well illustrated. Did you write it?) Found it suprising how many dragged along drownings there were reported. Even if the number is not the majority, more cases than I expected. (though I bet some bias for the people reporting such things also being sailors that actually use tethers as opposed to some of the rent a boat casualties) What stuck out to me in those case was that often the remaining people on board did not know what to do and kept the boat on its stabl
  19. For curiousity's sake, does anyone have a statistic/study on sailors dead to losing contact with the boat(tether failure, quick release or just not picked in) versus guys killed by getting dragged along? From a gut feeling I would always say that the former are in the majority. But that is nothing to rely on. As for stopping the boat under spinnaker. Luckily I have yet never needed to and would not like my takedown time on all but the smallest boats.(especially without preparation. Like clearing the halyard beforehand) But that also means I can't quite picture the practicality. Would
  20. The top mount certainly has something going for simplicity. Where would you think of mounting the other two units if you opted for a seperate screen and side mount? About the old school control it is good to remember that they just look like that due to the need of (mechanical?) linkage? With electrics a tiny knob is all that you need. Afterall every cargo ship or plane runs by wire. Tiny joystick in any case. There really is no practical need for a big lever to stick around in the cockpit so that you can hit your knees on it. Question then is how much you care about the more traditi
  21. Oh that cutout is significantly larger than on my boat where there is space behind the wall still.(shelf is probably the same size overall) How about mounting both the throttle and the screen on a board that can swivel back to one side of the shelf? That way youd don't lose all of the space and the parts can be out of the way, as well as rain, when you don't need them? Kind of like how some boats have a swivel mount for the plotter/radio/instruments in the companionway.
  22. Inatallation I've seen once somewhere. Do you have an opening/shelf at the tiller?
  23. You're right. Forgot that bit of the video where he aknowledges those limitations. I was more thinking of the likes as Torqeedo with their... questionable equivalency statements. At least poor demonstration for what it can do. Probably brakes every marketing rule but personally I'd just strap the standard outboard to a typical 8m boat and show it motor into port in 4-5bft. Instant establishing of its capability.
  24. Whenever I see someone motoring directly into 5bft wind and a meter or so waves I can't help but shake my head. Then again I don't want to tell others how to enjoy their time and make presumptions. I just can't figure out why one would do this. Even the issue of tacking up a relatively narrow passage is not all that problematic today with self tacking jibs.(not necessarily pretty, but you can install one on just about any ship if you require the comfort) Still, if electric motor companies stopped trying to sell them as diesel replacements I believe adaptation would have gone much better.
  25. Yeah, someone would need to do the math, but I also suspect electrics won‘t come out ahead in typical sailing use case unless you‘re looking at some really long term gains... repowering seems to make sense if the old engine is toast and/or the electricla system could use a rebuild anyway. Plus the far less altruistic preferences for near silent propulsion and less noisy generation. But that in of itself has little to do with the environment. SUVs are a thing that pushes my buttons... decades of aerodynamic improvements burned for... that. Sorry for digressing. Wh
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