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#21
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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 |
#22
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Bending longeron
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#23
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Bending longeron
"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 |
#24
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Bending longeron
"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 |
#25
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Bending longeron
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... |
#26
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Bending longeron
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.) |
#27
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Bending longeron
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 |
#28
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Bending longeron
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. |
#29
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Bending longeron
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 |
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