Hallberg Rassy Rasmus 35

Hallberg Rassy Rasmus 35
An Old Classic

Saturday, January 21, 2012

Hard Top for Rasmus

I have started building the hard top for the Rasmus out of ply.  I am going to build it in place for the most part.  I was going to make a frame out of stainless steel but decided to go with plywood/epoxy/glass composite.  I thought the steel frame would add too much weight up top.  After looking at measurements sent by Euan and pictures, I have come up with my best guess at the hardtop radius.  I am going with a hardtop radius of 122 inches.  I will make the top out of 2 layers of 1/4 inch okouma ply bonded with epoxy. Below is the dimensions for making the jig necessary for making the top with a 122 inch radius curve.  If anyone out there thinks I am off base on this I would like to hear from you.


Cabatach said...

curvature looks about right to me. Don't forget to add a lip to the back edge especially if you then add a rear cockpit cover. It stops water running back into the cockpit and sheds it to either side making the cockpit drier. Its about 1" tall with rounded profile approx 0.5" radius. Also make sure its really stiff so you can stand on it. Makes putting the sail cover on much easier. Finally outside edges over lap the windows by approx 1" on sides and almost 2" at front though it varies as the edge is curved. When water runs off it doesn't then drip onto the glass leaving smear marks and leaving it clearer. Hope this helps

Pat Sixbey said...

Yes thanks. You answered all of my remaining questions. Much thanks Euan.

jim kindred said...

Hi Euan,
I'd love to see pictures (or what you have of your original hardtop.

Thanks, JK