[Public-List] More on the rudder discussion

Jason S kk4mex at gmail.com
Thu Jan 17 07:09:36 PST 2019


Does anyone need for a brand new rudder shoe?

On Thu, Jan 17, 2019, 9:27 AM Michael Connolly via Public-List <
public-list at lists.alberg30.org wrote:

> Perfect! Could not resist. See how much fun we can have with the snow
> still on the ground
>
>
> > On January 16, 2019 at 8:56 PM Gordon Laco <mainstay at csolve.net> wrote:
> >
> >     Scoundrel!
> >
> >     Gord
> >
> >
> >
> >
> >
> >         > >         On Jan 16, 2019, at 7:00 PM, Michael Connolly via
> Public-List < public-list at lists.alberg30.org mailto:
> public-list at lists.alberg30.org > wrote:
> > >
> > >         Normaly rivets are set with a small air hammer set to a
> specified pressure. The business end of the air tool can have several
> different shaped "anvils' to conform to the factory head shape of the
> rivet. The "dolly" or "bucking bar" can also have different shapes to allow
> the formed head to take various shapes. This is for most riveting
> jobs......................................of course then there is Gord who
> enjoys the feel and satisfaction of a hand job. Oh gosh did I say the wrong
> thing?
> > >
> > >
> > >             > > > On January 16, 2019 at 3:33 PM Rod Symmes via
> Public-List < public-list at lists.alberg30.org mailto:
> public-list at lists.alberg30.org mailto:public-list at lists.alberg30.org >
> wrote:
> > > >
> > > >
> > > >                Gord:
> > > >                The only addition to your excellent description that
> I would make is to use the ball end of a ball/peen hammer to round over the
> rivet. It improves the mushrooming effect.
> > > >                Granted, all my experience is with iron rivets. Would
> this also be true with copper , Gord ?
> > > >
> > > >
> > > >
> > > >                Cheers, Rod
> > > >
> > > >                -------- Original message --------
> > > >                From: Gordon Laco via Public-List
> > > >                Date:16-01-2019 10:59 AM (GMT-05:00)
> > > >                To: jonathan.adams at analyticaltern.com mailto:
> jonathan.adams at analyticaltern.com mailto:jonathan.adams at analyticaltern.com
> , Alberg 30 Public List -- open to all
> > > >                Cc: Gordon Laco
> > > >                Subject: Re: [Public-List] More on the rudder
> discussion
> > > >
> > > >                Hello Jonathan - I’ve done a fair bit of riveting in
> boatbuilding contexts.
> > > >
> > > >                Riveting is a very secure mode of fastening… it’s
> easy to remove a rivet by either grinding or drilling off the burr on one
> side, then driving the rivet out with a pin and hammer.
> > > >
> > > >                Replacing the fitting by riveting involves use of a
> soft metal compatible with the fitting being secured… Cut a pin such that
> when run through the hole in the structure and fitting, about 3/16”
> protrudes on each side. The fit in the hole needs to be tight. Place a
> heavy mass (called ’the dolly’) on one end of the pin, and strike the other
> protruding end of the pin with a light hammer. I’ve found that repeated
> lighter blows with a lighter hammer works better than fewer harder hits
> with a heavy hammer. I’ve successfully used a hammer heavier than the one
> I’m hitting with as a good dolly. Be very sure that before each hit with
> the hammer, the dolly is in contact with the rod/rivet. What you don’t want
> is for the rod to get knocked through so you lose the protruding end which
> you are trying to spread.
> > > >
> > > >                Why does the rod only spread at the protruding end?
> Because you ensured a tight fit in the hole, there is nowhere else it can
> spread in response to the blows.
> > > >
> > > >                Take care that the pin is remaining ‘centred’ with
> protrusions as equal as possible from either side… switch the side you’re
> hitting and the side with the dolly often. You’ll develop a spread on each
> end of the pin which you can encourage and develop as the hitting
> progresses. At some point the pin will become secure, and when that
> happens, you can really start riveting. What happens as the spread on the
> end is developing, is that metal is ‘flowing’ out of the shaft area of the
> pin into the spread… this forces the grip of the rivet to become very
> tight. Magic.
> > > >
> > > >
> > > >                Gordon Laco
> > > >                #426 Surprise
> > > >
> > > >
> > > >
> > > >
> > > >                 > > > >
> > > > >                     > > > > > On Jan 16, 2019, at 10:48 AM,
> jreadams6 via Public-List < public-list at lists.alberg30.org mailto:
> public-list at lists.alberg30.org mailto:public-list at lists.alberg30.org >
> wrote:
> > > > > >
> > > > > >                 > > > >
> > > > >                     > > > > >                     All here are
> some pics of Laughing Gull's rudder and comments. anyone have
> > > > > >
> > > > > >                 > > > >        any knowledge of the rivetted
> type fastenings?
> > > > >
> > > > >
> > > > >                     > > > > >
> https://alberg30maintenance.wordpress.com/2019/01/16/rudder-work/
> > > > > >
> > > > > >                 > > > >
> > > > >                     > > > > >                     Jonathan
> > > > > >
> > > > > >                 > > > >
> > > > >                     > > > > >
> > > > > >                 > > > >
> > > > >             > > >                Jonathan Adams
> > > >
> > > >         > > 443-223-2534
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>
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