suggestions for making hatch covers on chesapeake 17

suggestions for making hatch covers on chesapeake 17

Post by Chris Beaudett » Sat, 20 Mar 1999 04:00:00


greetings.

i'm in the process of building a chesapeake 17', and am at the stage of
making the hatch covers.  a friend of mine made the same boat, and when it
came to making the hatch covers, he had a lot of problems making them keep
their shape.  the plans call for a single layer of 4mm plywood, curved/bent
to fit across 2-3 (depending on whethere fore or aft) "ribs" that are cut in
a parabolic shape.  he ended up gluing 2 layers of 4mm together and rigging
up an aparatus that included a hydraulic car jack and a ceiling beam to keep
pressure on them!

any ideas regarding how to "encourage" the covers to keep their bent shape?

thanks,

~~crb

 
 
 

suggestions for making hatch covers on chesapeake 17

Post by Jeff Kruge » Sat, 20 Mar 1999 04:00:00

Hello,

Try kerfing one layer of your plywood, cut about 1/4 the depth with the top
veneers grain orientation, cut every 2", do that on two pieces.  Place the
kerfed sides towards each other so that they are hidden, cut in this way
they will hold their shape when attached to your "ribs".  This is similar to
the way that the old sea trunk round tops were constructed.

 
 
 

suggestions for making hatch covers on chesapeake 17

Post by Marcel Charpentie » Sat, 20 Mar 1999 04:00:00

A hydraulic jack???!!! a ceiling beam???!!!!  :-o
Making the hatches is really very simple. I first custom make only two curved
ribs per hatch out of quarter inch lathe stock whether front or back hatch. I
glue these "ribs" to two straight pieces that run fore to aft forming a square
frame. After that cures I simply glue the 4mm plywood to the frame held in place
with clamps.
I don't see what the big problem is.
Quote:

> greetings.

> i'm in the process of building a chesapeake 17', and am at the stage of
> making the hatch covers.  a friend of mine made the same boat, and when it
> came to making the hatch covers, he had a lot of problems making them keep
> their shape.  the plans call for a single layer of 4mm plywood, curved/bent
> to fit across 2-3 (depending on whethere fore or aft) "ribs" that are cut in
> a parabolic shape.  he ended up gluing 2 layers of 4mm together and rigging
> up an aparatus that included a hydraulic car jack and a ceiling beam to keep
> pressure on them!

> any ideas regarding how to "encourage" the covers to keep their bent shape?

> thanks,

> ~~crb


 
 
 

suggestions for making hatch covers on chesapeake 17

Post by Marcel Charpentie » Sat, 20 Mar 1999 04:00:00

It's a stitch and glue kayak. Plans are available from Chesapeake Light Craft.
The website is clcboats.com
Quote:

> What, please, is a Chesapeake 17? What sort of boat is it? Who supplies the
> designs? Do they have a web presence?

> thanks, Gavin

 
 
 

suggestions for making hatch covers on chesapeake 17

Post by Gavin Atki » Sun, 21 Mar 1999 04:00:00

What, please, is a Chesapeake 17? What sort of boat is it? Who supplies the
designs? Do they have a web presence?

thanks, Gavin

 
 
 

suggestions for making hatch covers on chesapeake 17

Post by Dave G » Sun, 21 Mar 1999 04:00:00

Quote:
> i'm in the process of building a chesapeake 17', and am at the stage of
> making the hatch covers.  a friend of mine made the same boat, and when it
> came to making the hatch covers, he had a lot of problems making them keep
> their shape.  the plans call for a single layer of 4mm plywood, curved/bent
> to fit across 2-3 (depending on whethere fore or aft) "ribs" that are cut in
> a parabolic shape.

As another post mentioned, I can't for the life of me figure out what the
problem could be. A single 4mm plywood hatch curves easily over the frame
and is held securely with ordinary clamps until the epoxy cures.

Quote:
> he ended up gluing 2 layers of 4mm together

I'm confused by this part. Did he double up the hatches to make them
stronger? Then I might understand why they wouldn't want to bend.
Quote:
> and rigging
> up an aparatus that included a hydraulic car jack and a ceiling beam to keep
> pressure on them!