[Rhodes22-list] Genoa too long for my GBI furling tube
Todd Tavares
sprocket80 at mail.com
Tue Sep 21 18:58:42 EDT 2004
Bob,
I'd like to add one additional suggestion to Roger's post. Try
to find a piece of aluminum tubing that will fit tightly inside the
furling tube. Cut a length of this tube approximately four inches
long. This section should be slid inside the furling tube and extend
at least two inches into each of the furling tube and the add on
section. Have the welder put a couple of "rosette" welds on either
side of the joint to be welded. Roger may think this is overkill
but, better to be safe than sorry.
Todd
----- Original Message -----
From: "Roger Pihlaja"
Date: Mon, 20 Sep 2004 22:03:17 -0400
To: "The Rhodes 22 mail list"
Subject: Re: [Rhodes22-list] Genoa too long for my GBI furling tube
> Mark,
>
> OK, thank-you, now I understand! I will have to look at doing
something
> like this with my Harken Unit 0 roller furler. If I could avoid
having to
> connect & disconnect the forestay from the masthead when I trailer
Dynamic
> Equilibrium, it would significantly speed up my rigging/unrigging
process.
>
> So Bob, if you are still listening to all of this; go to the
hardware store
> & buy a piece of aluminum tubing with the same OD as your furling
tube. Cut
> this tube to the additional length required on your forestay. Take
your
> present furling tube to a welding shop that specializes in MIG
welding of
> aluminum &a mp; have them weld the additional tubing onto the end of
your present
> furling tube. Tell the welder that the joint is going to be subject
to a
> combination of tension, compression, & torsional loading & that you
need
> 100% weld penetration. Be sure to have them grind the weld joint
smooth.
> This will provide the additional luff length you want for your
oversize
> genoa.
>
> But now, if you don't disconnect the forestay from the masthead, the
furling
> drum will stick out about 2 feet beyond the butt end of the mast
when you
> trailer the boat. The furling drum will be supported only by the
furling
> tube as a cantilever load. The furling tube wasn't designed to be
loaded in
> that manner. The furling tube isn't sufficiently strong to tolerate
this
> sort of load for very long. If you don't support the furling drum;
then,
> you may bend your furling tube as you drive down t he road due to
aerodynamic
> loading & vibration. I would expect the furling tube will crack &
fail in a
> short cycle fatigue mode if you don't support the furling drum. So,
for
> trailering, go back to the hardware store & buy yourself a piece of
PVC pipe
> or a piece of wood that fits tightly into the butt end of your mast.
You
> will have to rig up a way to secure your furling drum to this PVC
pipe or
> piece of wood when it is sticking out of the butt end of the mast -
> something as simple as a bungee cord would probably work just fine.
>
> Roger Pihlaja
> S/V Dynamic Equilibrium
>
> ----- Original Message -----
> From: "Mark Kaynor"
> To: "'The Rhodes 22 mail list'"
> Sent: Monday, September 20, 2004 8:00 PM
> Subject: RE: [Rhodes22-list] Genoa too long for my GBI furling tube
>
>
> ; > Roger,
> >
> > As an owner of the CDI furler, I think Rummy is saying that the
CDI furler
> > foil is cut to be just short of the upper end of the forestay.
When you
> > lower the mast, the furler sticks out a couple of feet beyond the
base of
> > the mast. The solution for transporting it is to stick a piece of
wood, a
> > piece of PVC, etc. up into the mast such that an amount
approximately
> equal
> > to the "extra" length of the CDI furler to support the furling
drum. The
> > excess foil / drum is then tied to the support.
> >
> > Mark Kaynor
> >
> > -----Original Message-----
> > From: rhodes22-list-bounces at rhodes22.org
> > [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Roger
Pihlaja
> > Sent: Monday, September 20, 2004 7:50 PM
> > To: The Rhodes 22 mail list
> > Subject: Re: [Rh odes22-list] Genoa too long for my GBI furling
tube
> >
> > Rummy,
> >
> > I'm not following your explanation; but, it doesn't matter. The
real
> > question is; In your opinion, is this a viable solution for Bob?
> >
> > Roger
> >
> > ----- Original Message -----
> > From:
> > To:
> > Sent: Monday, September 20, 2004 5:02 PM
> > Subject: Re: [Rhodes22-list] Genoa too long for my GBI furling
tube
> >
> >
> > > Roger,
> > > The new CDI furling drum that is coming from the factory is
longer in
> > > the manner you described. They dealt with the extra length by
using a
> > > piece of
> > PVC
> > > inserted into the mast and then tie the extra length to it. This
way
> > > the entire length can be supported for transit.
> > >
> > > Rummy
> > > __________________________________________________
> > > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
> > >
> > >
> >
> >
> > __________________________________________________
> > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
> >
> >
> > __________________________________________________
> > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
> >
> >
>
>
> __________________________________________________
> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
--
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