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Old 03-11-2008, 06:13 PM   #626 (permalink)
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Originally Posted by Big91RustyBucket View Post
So what is the most recent , awesome ram to be using. I need to purchase steel for the lower part , and a drill bit , but I am almost done with mine . Just need to finish some holes , and build it.

I got my holes piloted , need a 7/8 bit , and 1 1/4 bit. I have your number but didn't see this till today. Anyways I will try to catch ya tomorrow but will be in Vegas wed-fri.Then on a wheeling trip for the weekend. I have tried to catch ya before but never actually reached you.

I am using a lion 24" stroke 3" bore 2500PSI ram, Have to modify the bender for it, however, as it is considerably longer than the HF jack, and as it is stronger, I went with 3/4" arms, which causes the frame to be wider etc... Just about every dimension has changed, even the Ram pins are now 1" instead of 7/8ths. It is a downward slope for sure..
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Old 03-11-2008, 06:36 PM   #627 (permalink)
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do you think bronze will hold up to the pressure without deforming?
That is what I was worried about. I am making 2 sets ofArm supports, 1 with and 1 without bushings, I'll try it both ways and see what works better.
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Old 03-11-2008, 09:19 PM   #628 (permalink)
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The downward slope sucks. I can't find drill bits.
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You've inspired me to start a build thread of my own.......... all the pictures will be upside down to reflect my driving style!
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Old 03-16-2008, 07:41 PM   #629 (permalink)
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Finally had a chance to do the machining this weekend. The only machining left is the 7/8" holes in the 2 x 2 box tube, and Chamfering all the holes and sharp edges.

Arms 3/4":


Hydraulic Cylinder base pivots and the spacer for the arms(clearanced for the Cylinder):


Pivot block:
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Old 03-16-2008, 08:08 PM   #630 (permalink)
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Quote:
Originally Posted by Murfman1967 View Post
Finally had a chance to do the machining this weekend. The only machining left is the 7/8" holes in the 2 x 2 box tube, and Chamfering all the holes and sharp edges.

Arms 3/4":


Hydraulic Cylinder base pivots and the spacer for the arms(clearanced for the Cylinder):


Pivot block:
Well let me know when you get back in town , so you can help me with a few holes.
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You've inspired me to start a build thread of my own.......... all the pictures will be upside down to reflect my driving style!
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Old 03-16-2008, 08:12 PM   #631 (permalink)
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My plans changed a little I'm leaving Friday, and will be gone for ~ 10 days..
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Old 03-17-2008, 03:52 AM   #632 (permalink)
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My plans changed a little I'm leaving Friday, and will be gone for ~ 10 days..
It's all good. Whenever you get back if I haven't bought a 7/8 , or 1 1/4 bit yet ....
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You've inspired me to start a build thread of my own.......... all the pictures will be upside down to reflect my driving style!
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Old 03-17-2008, 11:02 PM   #633 (permalink)
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big 91 can you introduce me to the chick in your avitar? woweeeee! i would hit that shit and aint even seen her head yet!
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Old 04-07-2008, 05:49 AM   #634 (permalink)
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I scored a 1 1/2 110deg 5CLR die on Ebay for 130.00 today I am ordering some 7/8" and 1" hardened shafts today, as I cant wait for the freebies any longer. I want to get theis thing done already..
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Old 04-07-2008, 05:55 AM   #635 (permalink)
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Originally Posted by Murfman1967 View Post
I scored a 1 1/2 110deg 5CLR die on Ebay for 130.00 today I am ordering some 7/8" and 1" hardened shafts today, as I cant wait for the freebies any longer. I want to get theis thing done already..
Nice. Lemme know when your in the shop so i can stop by for that bit.
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You've inspired me to start a build thread of my own.......... all the pictures will be upside down to reflect my driving style!
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Old 04-07-2008, 12:34 PM   #636 (permalink)
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It's all good. Whenever you get back if I haven't bought a 7/8 , or 1 1/4 bit yet ....
harborfreight has those bits for dirt cheap. Silver & deming bits. They cut that thick steel like butter if ya keep em lubed. We used brake fluid of all things for lube, and they ate right thru it.
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Old 04-09-2008, 09:43 PM   #637 (permalink)
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Quote:
Originally Posted by Murfman1967 View Post
I scored a 1 1/2 110deg 5CLR die on Ebay for 130.00 today I am ordering some 7/8" and 1" hardened shafts today, as I cant wait for the freebies any longer. I want to get theis thing done already..
I scored a 1 3/4 6" 110 Die for 175 shipped off ebay so we should be good lol... Now i need to get a jack finish my holes and assemble.
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You've inspired me to start a build thread of my own.......... all the pictures will be upside down to reflect my driving style!
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Old 04-14-2008, 10:16 PM   #638 (permalink)
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Air Over Hydraulic Bender Air compressor size?

For all you folks with air over hydraulic benders. What's the minimum air compressor should i get?
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Old 05-05-2008, 09:52 PM   #639 (permalink)
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Big91rusty..

Ok, so I am following this thread from beginning to end right/, and I see the picture you have as your profile picture....I almost forgot I was looking at the tube bending thread!!

Ok, carry on!



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Old 05-10-2008, 11:25 PM   #640 (permalink)
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Originally Posted by Murfman1967 View Post
I scored a 1 1/2 110deg 5CLR die on Ebay for 130.00 today I am ordering some 7/8" and 1" hardened shafts today, as I cant wait for the freebies any longer. I want to get theis thing done already..
I use D60 cross shafts for 7/8" pins on my bender, they work great.
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Old 05-11-2008, 10:12 PM   #641 (permalink)
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Im using tractor pins from TSC , i work there so I figuered id try them. Havent bent anything thick yet but when i do ill let yall know how it went.
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Old 05-12-2008, 12:00 PM   #642 (permalink)
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Interesting die technique at the hobart welding forum:
http://www.hobartwelders.com/weldtal...ad.php?t=29578
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Old 05-15-2008, 08:09 AM   #643 (permalink)
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got my plans... about to build... question though..
why are you guys making part H (the crossover support for the tower support) step up like that??? was there ram interference with it mounted inline with the 45* support rails???


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Old 05-15-2008, 08:42 AM   #644 (permalink)
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There was interference if you tried to use the air over hydraulic ram that Harbor Freight sells. There wasnít enough distance to fit the ram between the two 45ís you refer to. You really need more room than you would think because the ram mounts in the center but it is much wider on one side than the other due to the hand pump/valve or the air piston assembly.

The new plans added the H part to allow more room and to keep the structure square. I just pulled the bottom of the 45ís out far enough to clear the ram.

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Old 05-18-2008, 06:40 PM   #645 (permalink)
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Finally had some time this weekend to get back on the bender





The eprights are 50" tall, I just tacked the lower ram mounts to the base to check the range of motion on my arm. I can get ~95 degrees in one shot. Obviously there is still a shit-ton of work left, I need to make mounts for the battery, Hydraulic power unit, CNC control and trnsducer. I also need to add the support legs, feet and casters, but it was cool moving the ram with air and seeing it move.
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Old 05-22-2008, 08:41 PM   #646 (permalink)
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Harbor Freight Store Flier has the 8 ton long ram Air/Hydraulic jack for $60 until June 9th.
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Old 05-24-2008, 06:16 PM   #647 (permalink)
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All I have left is getting a couple of hoses made up, and wiring the CNC control to the pump.





96 degrees in one shot:


Wheel detail (Its a heavy bitch!)


Extending leg detail:



Ad just because it is Pirate :

Last edited by Murfman1967; 05-24-2008 at 06:18 PM.
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Old 05-29-2008, 05:22 PM   #648 (permalink)
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question for murf
whats the extension on that ram?

loving the bacon

-Erik
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Old 05-30-2008, 03:13 AM   #649 (permalink)
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question for murf
whats the extension on that ram?

loving the bacon

-Erik
It has 24 inches of travel.
Mmmm Bacon

Got the hose, should be able to fire it up this weekend.
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Old 06-02-2008, 07:00 PM   #650 (permalink)
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So has anyone else had to block up there bender so they could bend a long piece with multiple bends so it does not hit the floor?
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