Mark Rendelman hull 24 Posted July 25, 2019 Report Share Posted July 25, 2019 Cs20mk3 hull# 24 I have chosen to fill and empty my ballast tank with electric bilge pumps in looking at the information on plastic fittings and they don’t recommend them for below water line. I see no reason not to use them since our boats don’t spend extensive time in the water. If anyone has a spin on this make a post, also I have been building the collars for the masts having only 8” between them that’s not much bearing surface how do you make sure that they are straight,I used a 6’ level to make them level and a string line on the adjacent side to see that they were inline,I will not epoxy them till later on.i don’t need 21’ masts just laying around. Quote Link to comment Share on other sites More sharing options...
Jknight611 Posted July 25, 2019 Report Share Posted July 25, 2019 Mark, I have a ski boat ballast pump in the port lazarette my CS20.3 with a 3/4 inch bronze thru hull the aft port side of the centerboard case. I also have a 3 way diverter valve in the locker with a small hose to rinse the cockpit and clean the occasional fish. 4 years later still working fine. I plumbed it with pvc pipe but if I did it over I would consider pex, to eliminate some fittings. The gentle bends of the pex probably flow better too. I didn’t use a thru hull shut off valve, seemed to be overkill. Where my intake port is there is so little hydrostatic pressure, and if it totally failed the locker might get 4 inches of water in it, didn’t seem necessary. I do have to watch using the centerboard as a depth sounder, it gets muddy then the ballast tank gets muddy and it is I PIA to clean out. Quote Link to comment Share on other sites More sharing options...
Hirilonde Posted July 25, 2019 Report Share Posted July 25, 2019 There are a few down sides to plastic fittings. 1. strength, easier to break apart where hose attaches ( doesn't apply if nylon) 2. bonding, some goops don't work with plastic at all and others don't work as well 3. they get even weaker when a shut off is attached (well, more susceptible to breaking as lever arm gets longer) If I anchored my boat for an over night I would want all through hulls to have shut offs. Redundancy equals safety. Quote Link to comment Share on other sites More sharing options...
Alan Stewart Posted July 25, 2019 Report Share Posted July 25, 2019 Mark, This is how I usually join the mast tubes. Quote Link to comment Share on other sites More sharing options...
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