Bending longeron

On Mar 13, 10:28 pm, "Morgans" wrote:
_said_

...

As you are probably unaware, my name was in there as having "wrote"
something on your most recent post,

Sort of.

but not one word on your post came from
any of my posts. I don't like (mostly on principle)
being quoted when there
is nothing there I said.

A reader can figure that out by counting the "..."


I think you will understand, and will try harder, next time. :-)

Yes, you're right, I should be more careful.

--

FF

wrote:
On Mar 13, 10:28 pm, "Morgans" wrote:
_said_

...

As you are probably unaware, my name was in there as having "wrote"
something on your most recent post,

Sort of.

but not one word on your post came from
any of my posts. I don't like (mostly on principle)
being quoted when there
is nothing there I said.

A reader can figure that out by counting the "..."

I think you will understand, and will try harder, next time. :-)

Yes, you're right, I should be more careful.

--

FF


Well my method WORKS, AND WORKS GOOD, & I can show you pics of my Stabilizer to prove it.
Jerry---posted 3 or 4 days ago---

"Jerry Wass" wrote

Well my method WORKS, AND WORKS GOOD, & I can show you pics of my
Stabilizer to prove it.
Jerry---posted 3 or 4 days ago---
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Jerry, I have my views set to get rid of posts that far back.

What was your method, again? I quick reminder will suffice! g
--
Jim in NC

"Richard Riley" wrote

Jerry's method was -
---------------------------------------------
--I bent some of the same tube by filling it with sand, bending it
around a 10" pulley that had been turned out inside to 3/8"
radius--Pulling it around with the inner race of a big ball brg that
had
used 3/4" balls--this was pressed onto a smaller brg which was bolted
to
a bar that pivoted on the center support of the pulley. BUT--
that's a 5" radius & you want 3"---might do it though..send ya a pic
if
your interested. wass biplane at tds dot net

So, it was almost a homebrewed commercial bender, it sounds like.
--
Jim in NC

Morgans wrote:
"Jerry Wass" wrote

Well my method WORKS, AND WORKS GOOD, & I can show you pics of my
Stabilizer to prove it.
Jerry---posted 3 or 4 days ago---
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Jerry, I have my views set to get rid of posts that far back.

What was your method, again? I quick reminder will suffice! g


it's still there 3-5---2:29 pm---Jerry---I sent someone some pics also...

Morgans wrote:
"Richard Riley" wrote

Jerry's method was -
---------------------------------------------
--I bent some of the same tube by filling it with sand, bending it
around a 10" pulley that had been turned out inside to 3/8"
radius--Pulling it around with the inner race of a big ball brg that
had
used 3/4" balls--this was pressed onto a smaller brg which was bolted
to
a bar that pivoted on the center support of the pulley. BUT--
that's a 5" radius & you want 3"---might do it though..send ya a pic
if
your interested. wass biplane at tds dot net

So, it was almost a homebrewed commercial bender, it sounds like.

Yeah, I just happened to have the parts & a lathe--so it wasn't too much
effort---BTW the radius was more like 4" rather than the 5" I first
recalled--(two-groove pulley, used smaller one.)

Dennis Fetters wrote:


Well, shoot. I guess I need to stop using ice as a method of bending
tubing if it won't work. I wish I would have know that 30 years ago, I
would have not waited all my time bending tubes that way to keep them
from distorting.......

Dennis can the bending die that is used to set the radius be flat, like
a block of wood with inside radius cut into it?


John

J.Kahn wrote:
Dennis Fetters wrote:


Well, shoot. I guess I need to stop using ice as a method of bending
tubing if it won't work. I wish I would have know that 30 years ago, I
would have not waited all my time bending tubes that way to keep them
from distorting.......


Dennis can the bending die that is used to set the radius be flat, like
a block of wood with inside radius cut into it?


John

Hi John,

Both the inner and outer die must have the same radius as the tube being
bent. On the outer die, I use a flat bar with the radius cut into it.
(four sides to the bar, four different radius) Then on the back side of
the bar is a roller, that draws the bar around the inner radius, leaving
no scratches on the tube. Hope this helps.

Dennis Fetters wrote:
J.Kahn wrote:
Dennis Fetters wrote:


Well, shoot. I guess I need to stop using ice as a method of bending
tubing if it won't work. I wish I would have know that 30 years ago,
I would have not waited all my time bending tubes that way to keep
them from distorting.......


Dennis can the bending die that is used to set the radius be flat,
like a block of wood with inside radius cut into it?


John

Hi John,

Both the inner and outer die must have the same radius as the tube being
bent. On the outer die, I use a flat bar with the radius cut into it.
(four sides to the bar, four different radius) Then on the back side of
the bar is a roller, that draws the bar around the inner radius, leaving
no scratches on the tube. Hope this helps.

Great Idea, A simple way to obviate having a set of outer rollers ,one
for each size---The bar is only long enough to make the longest curve
you desire, and "floats" between the tube and the roller--i.e. not
attached anywhere on the machine--The roller is mounted on a bar that is
pivoted at the center of the inner rasius die.--then you only have to
have an inner die with the correct radius of the curve & for the tubing.

Jerry