Re: Whisker pole track & rivets

<salty@xxxxxxx> wrote in message
news:4dj4k41aoe94ppjkkn1dmklj1tklpd8cft@xxxxxxxxxx
On Thu, 11 Dec 2008 18:50:26 -0800 (PST), joost
<joost.jager@xxxxxxxxx> wrote:

I am investigating the best way to fasten a 4 metre long alu t-track
for my whisker/spi pole to the alu mast.

Currently I have a short length of track (1 metre) which is fastened
with SS screws. I am not satisfied with this, because the screws react
with the aluminium of the mast and dissolve the thread. The track
comes off. I also find it quite difficult to drill and tap the holes
in the mast accurately sitting in a bosun's chair.

My question is whether it would be better to fasten the track with SS
rivets dipped in some isolating compound. At least I wouldn't have the
problem of the tiny threads corroding away and loosening the
fasteners. Also I think that I have a bit more tolerance for drilling
the holes + I can reuse the existing worn out holes to put the rivets
in (instead of tapping one size up).

But, how strong is it compared to screws?

And, how would I go with off-the-shelf T-track which is made for
countersunk heads?

Any thoughts?

Thanks,
Joost.

Next time, tap the holes to make threads for machine screws. Mount
using SS machine screws coated with TefGel.



Wouldn't stainless promote a galvanic response between the screws and the
two pieces of aluminum?

--
"j" ganz @@
www.sailnow.com



.

Relevant Pages

  • Re: Whisker pole track & rivets
    ... I am not satisfied with this, because the screws react ... with the aluminium of the mast and dissolve the thread. ... I also find it quite difficult to drill and tap the holes ... fasteners. ...
    (rec.boats.cruising)
  • Patching a small (but too large) hole in drywall?
    ... When we removed the vents to have the ducts cleaned afterward, ... the screws also removed the fasteners, leaving largish holes, about 1/2" ...
    (misc.consumers.house)
  • Re: Whisker pole track & rivets
    ... I am not satisfied with this, because the screws react ... with the aluminium of the mast and dissolve the thread. ... I also find it quite difficult to drill and tap the holes ... fasteners. ...
    (rec.boats.cruising)
  • Re: Patching a small (but too large) hole in drywall?
    ... When we removed the vents to have the ducts cleaned afterward, ... removing the screws also removed the fasteners, ... fasteners, stripping the holes. ...
    (misc.consumers.house)
  • Re: Bimini Top Install Question..
    ... I also use a countersink on the holes to open the gelcoat layer up a ... little further if I am using wood screws. ... you are installing but not always. ... Installing the bimini support on the outside of the windshield on the ...
    (rec.boats)
Loading