Sunday, January 2, 2011

Adanasstomy........

The i550 falls short of PHRF NorCal's minimums of 400 lbs ballast and 19' length. So to get a certificate to race against the "big boys" I need at least another 240 lbs internal ballast and a foot of length.

Therefore, I have developed the Adanasstomy: the latest in surgical procedures for the i550...adding length and heft. Thought about Viagra, looked at PBX 90. Settled on Meranti ply, West Systems and good old fashioned lead.


First, here is the bilge bay where I will put the extra lead. 11.5" x 2.5" x 3.5" equals 100 cubic inches of lead. 6 of those should equal 600 cubic inches. Multiply 600 cu in of lead by .4 lb per cubic inch and you get 240 pounds. Just what the PHRF doctor ordered. (Photos of moulds are in yesterdays post below). Bottom of the boat is already 1/4" x 2 here and the lead will fit into a special box of 1/2" ply...all in hopes that the extra internal ballast doesn't blow through the bottom of the boat!



The boat tends to sit a bit bow up (stern a draggin') so I decided to place the extra ballast just forward of the keel.


And here is the extra 18" of boat. Obviously still waiting on fairing and paint...but looking pretty good so far.



Unfortunately the i580 doesn't fit in the garage....so it sleeps at night as it's alter ego, the i550.....kinda like Bruce Wayne at home in his jammies.

Application for the PHRF cert goes in this week.....pray for us!!

3 comments:

  1. Ben,

    have you thought about using water ballast down low in the center of the boat, something you can fill and dump easily. You'd need about 34 gallons, and obviously take up more space. Not sure if PHRF would count water ballast or not.

    Just a thought.
    -Chris

    ReplyDelete
  2. Or build an second rudder with lead in the tip.
    You also could make a lead bulb cover.
    But then the foil needs to be capable of handling the extra weight without braking.
    Do you plan to fill the cut-out area around the rudder with a rudder following rotating plate?
    Or go for the Elroy rudder...

    ReplyDelete
  3. What about putting the lead on a carriage?...

    ReplyDelete