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      Abbreviated rules   07/28/2017

      Underdawg did an excellent job of explaining the rules.  Here's the simplified version: Don't insinuate Pedo.  Warning and or timeout for a first offense.  PermaFlick for any subsequent offenses Don't out members.  See above for penalties.  Caveat:  if you have ever used your own real name or personal information here on the forums since, like, ever - it doesn't count and you are fair game. If you see spam posts, report it to the mods.  We do not hang out in every thread 24/7 If you see any of the above, report it to the mods by hitting the Report button in the offending post.   We do not take action for foul language, off-subject content, or abusive behavior unless it escalates to persistent stalking.  There may be times that we might warn someone or flick someone for something particularly egregious.  There is no standard, we will know it when we see it.  If you continually report things that do not fall into rules #1 or 2 above, you may very well get a timeout yourself for annoying the Mods with repeated whining.  Use your best judgement. Warnings, timeouts, suspensions and flicks are arbitrary and capricious.  Deal with it.  Welcome to anarchy.   If you are a newbie, there are unwritten rules to adhere to.  They will be explained to you soon enough.  

Doug Lord

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About Doug Lord

  • Rank
  • Birthday 06/17/1949

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Profile Information

  • Location
    Cocoa Beach, FL
  • Interests
    Foiler design and development,.........sailing fast,
    movable ballast systems and..... justice.

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29,268 profile views
  1. Radio Control Multihulls

    All rc foilers have to be able to manually adjust the angle of incidence of the foil for setup. Pitch is a function of the relationship between the rudder t-foil and the main foil(s). On a Bradfield foiler including the F3 and Fire Arrow the rudder foil is set to zero degrees AOI relative to the static waterline* and the main foils to +2.5 degrees**. It is that setting and the nature of a trailing rudder t-foil that controls pitch. That is not true of the F3 and Fire Arrow where the set up is very simple and straightforward and usually doesn't need adjustment after the first set up regardless of conditions. If you're referring to UptiP foils here it depends on the design: the UptiP ama foils on Fire Arrow have never needed adjustment after the initial setup, which, again was simple and straight forward though the very first time on Fire Arrow it took longer than a Bradfield foiler because I had never sailed with an uptip foil before.The fact that the foil is designed with washin(not washout) makes it suitable for any condition w/o further adjustment. And if the boat were produced now, it would be a piece of cake to set them up. For racing an rc boat ,UptiP foils might benefit from a manually adjusted flap on the horizontal portion of the foil which could be tailored for specific conditions to reduce drag. *which is parallel to the flight waterline ** with flap at neutral pix by DL-washin(not washout) :
  2. Radio Control Multihulls

    I have studied and researched rc foilers for over 30 years as well as designing and building them. Your statement was so off the wall, so absurd and so baseless it deserved that comment!! You think you can just spew bullshit and then get offended when your careless comment is called out?! Forget it......
  3. Crossbow fl 2017

  4. Radio Control Multihulls

    Nothing wrong with the sail jorge-designed by one of the best sail designers in the world and built by a great sailmaker.... I don't have to "prove everyone how wrong they are"-that's already been done by Maserati, Gitana and Bank Populaire and by their own ignorant, uninformed half-ass comments!
  5. Radio Control Multihulls

    Fire Arrow is an EXACT SCALE MODEL of a 19.5' sport trimaran. In the videos, it is sailing with the equivalent weight of three 180lb crew and 80lb of gear. It was never designed to be a race boat but even so in testing it did 2 times wind speed in very difficult conditions for a 21lb. scale model-very light air and out sized waves . And it could have kept on foiling all day if land and the radio range weren't problems-the foil system worked 100% perfectly on that last day of testing. The foil system worked perfectly but the rudder did not-part due to a radio problem but mostly due to the skippers inexperience with the boat-for instance, when foiling well on port tack I tacked when I probably could have pulled off a foiling gybe. Several times in the 7 minute version of the video the boat wanted to fly upwind and did for a couple seconds. The big fat head main(with adjustable upper outhaul) was a bitch to get trimmed right. There's no doubt in my mind that that thing will foil upwind and be able to complete a foiling gybe-likely one right after the other in stronger wind. It breaks my heart that I wasn't able to continue testing but dems da breaks.I know what she can do and she is a remarkable boat as will be the fullsize WOLF! The know-nothing, uninformed jackasses that diss the boat, the concept and me are simply classic examples of fools. The fact that three(and probably 4 with Macif when she gets home) multimillion dollar programs are using the same basic system Fire Arrow used first is nothing but astonishing and very rewarding to see! Fuck the fools and idiots-the Fire Arrow Foil System on a small boat like WOLF-whether I do it or someone else does will provide the coolest small multihull foiler there ever has been! Hope its me or at least that I get to see and sail it.....
  6. Radio Control Multihulls

    That is one of the most ridiculous and uninformed statements you could have made!!
  7. Radio Control Multihulls

    The rocksteady FA starts 24 seconds in and lasts 9 seconds......
  8. Radio Control Multihulls

    For F3: measured course and Davis Windmeter. For Fire Arrow-powerboat wake-Toward end of video-about 1:23 in. First foiling on port tack lasts 9 seconds not 12-rocksteady. Rest of video is excellent given the conditions.Wind was measured between 3-5 mph. Waves were much larger than would be expected with that much wind because of the proximity of the test site to a bridge and the fact that the wind had been blowing all night around 15 knots down the river for about 10 miles--as the wind died, the left over waves bent around the land near the bridge. https://www.youtube.com/watch?v=7Mok3d4KiMI
  9. Radio Control Multihulls

    Checkout the "gaff" at the top of the F3 rig-adjustable upper outhaul, excellent gust response.
  10. Radio Control Multihulls

    If that's your thesis I'm afraid you're incorrect*-there are now several RC foilers that are very steady-and fast. There is video of the F3 foiling rock-steady in 22mph of wind doing 18mph out there somewhere-and that was back in 2001.The short vid of F3 in the microSAIL! promo was rock-steady in a 4-5mph wind. The first 12 seconds of the Fire Arrow in waves is rock-steady as well followed by foiling with waves(including a large powerboat wake) and wind on the stb quarter. *though your rig idea has definite value Ian Holts boats are very fast and impressively steady most of the time.
  11. Hydroptere abandoned - Available for $20,000

    You don't know what you're talking about. There are two main types of hydrofoil-fully submerged and surface piercing see below. From www.tspeer.com : The lessons learned are: - The simple analysis is adequate to predict the most important influences on hydrofoil performance. - Fully submerged foils are the most efficient for a given design point. - Surface-piercing foils can be competitive with fully submerged foils when the requirement is to operate over a wide range of speeds.
  12. Crossbow fl 2017

    A lot of people that wouldn't be able to sail a performance monohull would be able to if a boat like Crossbow fl was available. It would add a whole new dimension to high performance small monohulls.
  13. Crossbow fl 2017

    Something is not working right with posting - too bad ..............................
  14. Crossbow fl 2017

    Model Testing of Trapeze Power Ballast System: pix Bruce McDaniel-
  15. Crossbow fl 2017

    Crossbow fl 2017--This thing has such great potential that it needs to be mentioned every now and then: Summary of Features and Specifications: ------------------------------- Features: 1) Self-bailing cockpit 2) Boat rightable from 90+ degree knockdown by crew w/o crew movement using the wing regardless of the position of the sliding ballast. a. ballast wing is sealed and has buoyancy much greater than that required to float the ballast sliding inside. b. ballast+ wing can be moved manually or electrically faster than a crew on a trapeze could move. 3) Rig utilizes modified rotating, A Class wing mast, sealed with masthead buoyancy to prevent turtling, 4) Ballast wing pivots: a. to allow trailering b. to move ballast aft when required with wing extension. c. also pivots athwartship to keep weight low to windward and to keep lee side of wing clear of water. 5) Ballast is adjustable in 10lb increments, 6) Boat can be sailed off a beach, 7) Boat features an asymetrical spinnaker, an underdeck spinnaker chute and retractable bow pole, 8) Seating arrangement: (NEW) . a. The skipper will sit relatively low in the boat on a seat that will manually or electrically rotate 180 degrees. This will allow the skipper to steer with his or her aft hand and handle the single sheet and Trapeze Power Ballast System with their forward hand. For Class racing weight equal to the difference between 250lb. and the skippers weight will be carried in a ballast compartment under the seat. 250lb is the maximum crew weight for racing. 9) Large, buoyant "spray rails" act to help provide a dry ride and knockdown recovery, 10) Self-tending jib with variation of Swift solo single sheet system. 11) Boat uses removable, "plug-in" DSS foils for greatly increased power to carry sail with speed. 12) The new changes effectively "turbo" the boat even allowing for windward planing. 13) Boat has an extremely wide crew weight range: approx 100lb to 250lb for normal sailing. All ratios are based on 250lb crew and would drastically improve with lighter crew weight. For class racing, it would be my desire to see a class adopt the maximum crew weight as standard with lighter crew carrying weight under the seat-or perhaps two "weight classes"-whatever it takes to encourage the widest participation. ------------- Specifications: (changes are to be expected) Hull length-15.6' Beam- 4.75' ---at waterline-3.75' Sail Area-(boat will use a carbon A Class wing mast from Matt McDonald/ Falcon Marine LLC, laid up specifically for this boat). --upwind- 161 sq.ft. -- downwind- 290 sq.ft. Weight-sailing weight w/o crew- 223lb which includes: --hull, rig, foils-124lb --Trapeze Power Ballast System: ---wing-21lb. @ 12'-16' length overall, pivots for transport, and moving weight aft. --- max ballast 78lb(8 pieces of lead-removable-.25" X 8" X 12"-about 9.72lb each) Max Crew weight: 250lb-boat is designed as a singlehander. All up sailing weight including crew-473lb DSS Foils: each 1.63 sq.ft.( 6" X 39") 6.5/1 aspect ratio, Welbourn section. Electrical System for moving ballast: Engineered by Rick Willoughby, who did the original "ballast mover" spread sheet. ------- Ratios- see Eric Sponbergs Design Ratio's PDF below ------------- DLR=55.6 --- SA/D= --upwind-42.48 --downwind- 76.78 --- SA/ws- --3.7/1 --3.48/1 including DSS foil --- SCP/Total weight= .3 and .34 if upwind RM from DSS foil is counted. =========== Attached Files: