On Feb 17, 8:28 pm, Frogwatch wrote:
On Feb 17, 2:33 am, Two meter troll wrote:



On Feb 16, 5:27 pm, Frogwatch wrote:

On Feb 15, 12:38 pm, "Andrew Butchart" wrote:

Sounds like a fun project. I quite enjoyed my old MiniCup but did find the
hull rather heavy for car-topping and dragging on the dolly to the beach.

--
Andrew Butchart


wrote in message

...

Hi

I completed a marine ply-wood Minicup hull in Auckland , NZ in 2007,
but did not get futher as we moved to Canada. I sold the hull.

I am working on the design aspects of building a skin-on-frame
Minicup, using the techniques I learned building a Tom Yost pvc skin /
aluminum frame kayak.

It will be interesting to see how this proceeds. All feedback from
Minicup builders welcome.

Cheers

Sofcrafts

My original MiniCups were made from 3/16 ply so I can imagine that one
made from 1/4" ply would be really heavy.

the thirty foot umiak (SOF traditional whale boat) i sail around in
tops at 300 lbs. 4 kts of wind push it easy as you want with the junk
rig. she will do every bit of her hull speed in 9 kts. it will be fun
to see a spray. unless you get gorilla with it i cant see it much over
80 lbs.

As I said, I used 3/16 ply and I can get mine atop my truck and can
get it to and from water with the dolly but I like the SOF concept but
it looks too fragile for the abuse I give my boats. I sail onto
oyster bars, drag my boats up and down embankments, etc. I wonder
about a lightweight glass skin on frame. I have also rebuilt both
MiniCups. There must be a better way, a sort of 1/8" ply cover with 4
oz glass done as stitch and glue. Replace the solid wood piece
joining the bottom pieces with a paper tube cut in half and glassed.
Make the cockpit round to avoid the heavy bulkheads. Get rid of the
decking that covers the edges of the cockpit (although it gives a
place to sit). Stitch and glue would eliminate most stringers too.

Dont know Frog both the umiaks are made with 12 oz skin and fully
impregnated with varathane. Ive gotton wear holes in them in a couple
of places but have yet to have anything like rocks or glass poke a
hole in them. replaced the skin on one and it was a bitch just to get
a knife into it. just like a ply boat there are things that will eat
it alive. you might have to change the type of abuse you give it.
however a dab or so of aquaseal will fix it right up.
I would say give it a try they are not very costly. or come on over
and try one of mine out.
i have one junk rigged and the other runs a two point five outboard.
one thing you might like is that these loverly things self damp the
wake of other boats; its the coolest thing.