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About JohnMB

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  1. JohnMB

    Hi temp foam

    Use RTV and make them yourself not sure about max heat
  2. JohnMB

    Hi temp foam

    Any foam becomes squidy if you heat it. You could use a silicone rubber foam if you want it squidy at room temp.
  3. JohnMB

    Hi temp foam

    For high temp applications you can use rohacell. Its a rigid foam, but you can heat it up to make it flexible. Rohacell IG should be good at 250F ig-f product information.pdf There is likely something cheaper out there :).
  4. JohnMB

    Comments on Trim

    I'm assuming that the two red telltales near the jib top batten and near the spreader are on the leach of the jib. They appear to be flying outward from the jib, is that how you normally have them ?
  5. JohnMB

    Flying Fifteen: the boat for everyone

    I'm guessing this is a local oddity of time and place. Sail numbers 139-148 are shown as IRL on flying fifteen register, made by Gilmore. This fits with the OP video tagged at Kircubbin (Strangford lough). Any historians out there comment on the use of the UK sail designation in County Down in 1955.
  6. JohnMB

    Chicago Area III

    I sailed with him 2001 through around 2005, it was my introduction to Chicago sailing. Dorsey was the only person who responded when I moved here and was looking for a ride. Met a lot of wonderful people.
  7. JohnMB

    Tilting the mast forward?

    Yup, and the derivative close to 90 is very small, so the change in distance is very small. Are you trying to understand how the tilting forward increase the separation or are you trying to win an argument that it does not?
  8. Absolutely, the only question is whether it would be a fun rabbit hole or not :).
  9. teensy uses arduino IDE, native CANBUS and comes on a cute little board that you plug into a USB :).
  10. JohnMB

    Tilting the mast forward?

    The pole does not rotate with the mast it is set to make the kite efficient, on the soling this generally means it stays level, rather than perpendicular to the mast. The tack can get a little closer to the mast as result, but the clew will move forward. look at the 6m shot just above.
  11. This looks promising who's in for a collaborative open source instrument platform?
  12. JohnMB

    When to go out, When to stay in

    Tom in full foiling mode :). I didn't think PHRF 3 allowed foils
  13. JohnMB

    Tilting the mast forward?

    Fraculation as described here is just doing the best you can with the rig you have. You are moving the mast tip forward, either by tilting the rig or bending it. Use the tools you have, Solings have a deck stepped mast, so when the backstay is let off downwind, the whole mast tilts forward hinging at its base on the deck, (some of the more adventurous boats let it forward enough that the worry about the mast coming off the step :). )
  14. JohnMB

    Tilting the mast forward?

    It increases the separation between the main and the kite.
  15. JohnMB

    Flying Fifteen: the boat for everyone

    I'm figuring windemere. Reminds me that I've not been to the lake district in far too long. (Swallows and Amazon country )