silicone liner

[Andriod 72]

Here's something that bugs me.

If I buy a stuffing tube from Aero Marine it comes with a pre-installed
silicone liner.

I want to cut the tube to length and put a slight bend in it.

If I leave the liner in the tube - When I apply heat to the tube to bend it,
the liner bubbles and it must be removed.

If I remove the liner before I apply heat - The liner is either destroyed
getting it out, or putting it back in.

Also, with the liner installed on a slight bend - that changes the I.D. of
the tube so that the prop shaft binds.

So what's the story with the liner? Is it there for only straight runs? Or
am I doing something wrong?

Thanks, in advance.

[3cats]

Are you using a tubing bender or freehand. Freehand KINKS the tube. Leave
the liner in and get a BENDER from Homedepot/Lowes.
"Andriod 72" <Far@away.com> wrote in message
news:HjX0a.3838$q91.397268@news2.west.cox.net...
> Here's something that bugs me.
>
> If I buy a stuffing tube from Aero Marine it comes with a pre-installed
> silicone liner.
>
> I want to cut the tube to length and put a slight bend in it.
>
> If I leave the liner in the tube - When I apply heat to the tube to bend
it,
> the liner bubbles and it must be removed.
>
> If I remove the liner before I apply heat - The liner is either destroyed
> getting it out, or putting it back in.
>
> Also, with the liner installed on a slight bend - that changes the I.D. of
> the tube so that the prop shaft binds.
>
> So what's the story with the liner? Is it there for only straight runs? Or
> am I doing something wrong?
>
> Thanks, in advance.
>
>
>

[Andriod 72]

Freehand, with a torch. The bend is _very_ slight and the tube is not
kinked.
But yet I still have the problems I mentioned.


"3cats" <3cats@adelphia.net> wrote in message
news:xOX0a.3851$jR3.1834439@news1.news.adelphia.ne t...
> Are you using a tubing bender or freehand. Freehand KINKS the tube. Leave
> the liner in and get a BENDER from Homedepot/Lowes.
> "Andriod 72" <Far@away.com> wrote in message
> news:HjX0a.3838$q91.397268@news2.west.cox.net...
> > Here's something that bugs me.
> >
> > If I buy a stuffing tube from Aero Marine it comes with a pre-installed
> > silicone liner.
> >
> > I want to cut the tube to length and put a slight bend in it.
> >
> > If I leave the liner in the tube - When I apply heat to the tube to bend
> it,
> > the liner bubbles and it must be removed.
> >
> > If I remove the liner before I apply heat - The liner is either
destroyed
> > getting it out, or putting it back in.
> >
> > Also, with the liner installed on a slight bend - that changes the I.D.
of
> > the tube so that the prop shaft binds.
> >
> > So what's the story with the liner? Is it there for only straight runs?
Or
> > am I doing something wrong?
> >
> > Thanks, in advance.
> >
> >
> >
>
>

[dpharant0519]

I dont think the lining in the stuffing tube is Silicone. Silicone will
withstand temperatures in excess of 1200 degrees. Your stuffing tube would
be like a chunk of spagheti at that temperature.

It is probably teflon tube.

That being said, why do you not order the stuffing tube with out the teflon
liner already installed?
You can do that.
It sounds as if you are putting much to sharp a bend in the stuffing tube if
the drive is binding.
Perhaps the teflon sleeve is a bit too small to start with.
I would check it with a micrometer. There should be at least a few
thousandths of an inch clearance all around the flex shaft.
The other option is the get tubing from someone like K&S and get the teflon
from Octura and make the assembly yourself.

Hope that helps.