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Imperial to metric equals no sailing for w/e
http://www.hobie.com/forums/viewtopic.php?f=75&t=35107		 Page 1 of 2
Author:  Weysail [ Fri Apr 22, 2011 9:25 am ]
Post subject:  Imperial to metric equals no sailing for w/e
I have lost the bung for the rear of the central hull, got to the water, checked it was tight, it was not even there, eeeeeekkk!

It's a Bank Holiday w/e here, might find a fixings shop tomorrow (Saturday), does anyone know the thread size?? We are a mixture of imperial and metric still, so I may find something? Anything that will fit in the brass insert.
Author:  Roadrunner [ Fri Apr 22, 2011 10:42 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
If you can't find anything, try a small cork or dowel, padded with several wrappings of duct or Teflon tape until it threads or jambs in. It may leak a little bit but shouldn't be problematic. That will hold you without damage until you can get a proper replacement. 8)
Author:  Weysail [ Sat Apr 23, 2011 2:30 am ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
Thanks, I'm just taking a paper tracing of the size to the fixings shop first, see if I can find a similar plastic bolt and a 'O' ring. I don't mind do a temp repair but don't want to go offshore knowing it's temporary.

I'm sure you know what I mean! We will never get just one type of sizes or type of thread, so we are stuck in the middle as regards finding and using them.

I just undid the bung and assumed it wouldn't go far, how wrong I was.
Author:  Weysail [ Sat Apr 23, 2011 12:28 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
The screw in bung must be about 5/16--7/16 AF and I couldn't find anything at short notice, so no sailing, no peddling and no paddling. I live 100 yards from the beach and everyone is out there on the water, a four day bank holiday weekend with the best weather this side of of the next decade, except me! Agghhhhhhhhhhhh!!!!!!!!
Author:  mmiller [ Sat Apr 23, 2011 8:23 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
Silicone? Duct Tape? Cork?
Author:  chrisj [ Sat Apr 23, 2011 8:35 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
Better to light one candle than curse the darkness.
Author:  Cowsgomoo [ Sat Apr 23, 2011 10:02 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
Yep, I'd be duct taping it and getting out there.
(I carry a pump too :lol: )


Funny, I mentioned to someone last weekend about having spare bungs for the new AI's because they might be hard to get. I've got a number of the larger ones just in case.
Author:  KayakingBob [ Sat Apr 23, 2011 10:07 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
I carry both sizes, just in case. Does his boat have the same size drain plug on the ama (like my TI does) to bring to the hardware store to match with?
Author:  Weysail [ Wed May 04, 2011 12:31 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
Still haven't got a replacement bung, the dealer is waiting as well. The id is .321" and about .351" including the thread, I've screwed some balsawood into the brass insert to identify the thread and just need to measure the pitch to get someone to make me a new one on the lathe.

I think I will have to fill the hole with some filler, let it set and unscrew it to do a proper job, unless someone knows the size and thread?
Author:  KayakingBob [ Wed May 04, 2011 1:31 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
Is your ama drain plugs the same size?
Author:  Weysail [ Thu May 05, 2011 3:10 am ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
No, the float drainplugs are larger with a coarse thread. Hard to believe no one knows the size.
Author:  mmiller [ Thu May 05, 2011 2:04 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
3/8" x 16
Author:  Weysail [ Fri May 06, 2011 1:54 am ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
Many thanks for that size, Matt, what is the thread? UNC, AF ????? We are awash with different patterns here. If you could give me the pitch that will do, we have the conversion tables to make a new bolt on the lathe.
Author:  Weysail [ Fri May 06, 2011 7:46 am ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
It will be 3/8 UNC outside diameter 0.375inch and core diameter 0.3073 my mate says.

He's making me one up, might even get out this weekend.

:-)))
Author:  bosab [ Fri May 06, 2011 4:28 pm ]
Post subject:  Re: Imperial to metric equals no sailing for w/e
The bung is a bolt size not a pipe size. 3/8" and 16 TPI
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