Tolmans have scuppers at the transom and the group at Yahoo for those that
build these have discussed this topic ad infiitum. Renn Tolman suggests
flexible tubes on the outside of the scupper that collapse when water tries
to flow into the scuppers from the outside, but remain open when water
inside the boat flows out through them. Ugly. We call them 'transom
condoms'. Many have tried other devices, including the flapper valves,
check valves, etcetera and nobody has found a solution that works. The
floating ball check valves quite working once they get a bit of real-life
gunk on or in them. The 'transom condoms' work reliably but look bad. Many
have given up and just put in round scuppers sized to fit available large
corks or pipe plugs (the type for leak checking pipes) from the local
hardware store or wine making shop.

I'd be very curious if those Sunfish check-ball self-bailers work or not and
I wonder what size the outflow passage is at it's smallest diameter
....anybody know? Anybody who actually owns and uses these that can report
on how well they work??

Brian



"Glenn Ashmore" wrote in message
news:8%N9f.30$ii.25@dukeread04...
Rutu has 3 small lockers built into he swim platform for snorkeling
equipment. It will be impossible to keep them dry so the side lockers
drain into the center one and I was planning to install a small bilge
pump. I am now thinking that a throughhull drain would be simpler and
more reliable but the drain will be only about 2" above the water line.
Any little swell at anchor will push water back up into the locker. I
have seen 1 1/2" cockpit drains with a ball float that seal when below the
water line but they are to large. Has anyone seen a similar device in the
3/4" to 1" range?

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com