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bgytr

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About bgytr

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  1. If you are certain there are no chafe issues.... Otherwise wire.
  2. https://www.plasticexpert.com/learn/polypropylene-pipe-failure/ I dunno.. I'm leary of any rigid plastic pipes. While the failure mode described in the link is due to chlorine in the water, it gives me pause having a hard plastic pipe that can crack from a number of mechanical and chemical actions.
  3. My old boat has pvc pipe from deck and cockpit scuppers to thru-hulls, which makes me a bit uncomfortable- a sistership some years back had one of those pipes crack, which caused the predictable havoc. What is the best hose to replace those scupper pipes? I want the most robust stuff I can get for such a critical function, hopefully with decent flexibility so it isn't too much of a bear to install.
  4. The hull offsets and rig dimensions are fully implemented in the data sets from a long time ago during MHS days. The only other measurements that might vary are sails, displacements and inclining data. The sails are explicitly input for my sails, and the incline and displacement are from the class average for my boat, which was quite consistent with minimal variation with our sisterships back in the day which were all fully measured.
  5. My boat is in the boat database shared by ORR and ORC. I've done some work with ORR in the past- honestly I was surprised at the results showing that my boat is actually a tad slower with more weight on the rail upwind, so I did some hand calc estimates on my own. Sure enough that's the way it works out.
  6. Thanks! Gulfstar Hood Custom 40.
  7. It depends on the specific geometry of each boat. A beamy boat with low freeboard will benefit much more from weight on the rail. A narrow boat may not benefit from weight on the rail at all. My boat is actually faster with fewer people onboard than stacking the rail because it is so narrow. Yes I have run the vpp to figure it out. You gotta figure the actual righting moment curve for a given boat, there's no simple rule of thumb.
  8. I've done the trip inside from Annapolis to Oriental in a J44, 8ft draft, 65ft air draft. Was a nice relaxing ride and would do it inside vs outside.
  9. What kind of boat is it and how are the polars derived? Were the polars from a vpp or tabulated from sailing?
  10. It's different when you are in a local race around other boats within sight vs out in the ocean. Having a yardstick when you don't have other boats around to measure off of is a plus.
  11. Part of the issue may be that one needs to know and understand the array of numbers to get them to converge and make sense. Ie if you know in a certain wind strength the boat speed should be x.x, wind angles and speeds should be yy and zz, then you can fairly quickly zero in on which inputs are off. And if there is wind shear and current one should understand how that would change the numbers. Also, if something looked off, I knew the instrument system well and could tweak the calibrations on the fly. Maybe my engineering background and mariner training helped me to understand all that stu
  12. I've been using Samsung Galaxy tab active, then tab active 2, and tab active pro for years now. Ruggedized and waterproof. Running navionics and Sailgrib for navigation and weather routing. It's great when the boat has wifi instrument data with Sailgrib. I got a gopro chest harness for a few bucks and adapted it to keep the tablet on my chest.
  13. Ya probably I am statistically insignificant, but we won a shit load of races.
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