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04-02-2011, 10:14 AM | #1 |
I wanna be Dave Join Date: Mar 2008 Location: Wayne county. PA
Posts: 2,507
| my tube bender...........
after reading people wanting a tighter bend in tube then any factory made bender can do, here is what i made from stuff i had around the house that will bend up 3/16" and 1/4" brakeline with a 3/8" inside radius diameter bend.... i started with a piece of steel bar stock that was 3/8" thick x 1" wide and cut it 5" long.... i tapped 5/16" holes in it for my mandrel bolts and 7/16" bolt holes to clamp it in a vise.... made my mandrels from 5/16" bolts, 3/8" trans/brake tube and washers, i cut the 3/8" tube just small of 3/16" and 1/4" to keep the tube tight in the mandrel to keep the tube from kinking while getting tight bends.... then just used a shanked bolt as my tube stop bolt.... the washer is to keep tube the same height as the mandrel in the jig.... every piece of the jig can be mouhted in the bar as one piece for storage.... as you can see you can have both 3/16" and 1/4" mandrels in at the same time if working both size of tube at once.... only issue i found with this first model was the bar stock i used is kinda small, i'll be making another bigger plate for the bolt holes so i have a work area bout the size of 8" x 8" to work on while bending tube up....thx for looking and hope to see what others come up with ........bob .... |
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04-03-2011, 11:48 AM | #2 |
Rock Stacker Join Date: Mar 2009 Location: SWATS
Posts: 57
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Thanks for posting this. This is just the type of thing I have been looking for. Also, let me say that you take great photos and explained everything in a clear and concise manner. If there were something I didn't understand, the pictures made it easy to figure out. Two thumbs up! |
04-03-2011, 12:23 PM | #3 | |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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04-03-2011, 05:49 PM | #4 |
I wanna be Dave Join Date: Mar 2008 Location: Wayne county. PA
Posts: 2,507
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that's guys , that's the MacGyver in me ....if ya seen my 3 threads how i built the tigress there is more MacGyver there as well, plus my TT/scale build to boot........bob .... |
04-08-2011, 06:38 PM | #5 |
Rock Stacker Join Date: Mar 2009 Location: SWATS
Posts: 57
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Thanks for the heads-up. I'll be sure to check out your other threads. |
04-08-2011, 10:06 PM | #6 |
RCC Addict Join Date: Jun 2007 Location: San Antonio, Tx
Posts: 1,093
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Man this is great I love how it seats inbetween the washers to prevent kinking, awesome write up!
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04-09-2011, 09:01 AM | #7 | |
RCC Addict Join Date: Aug 2006 Location: trying to find out what a TVuPer is.....
Posts: 1,851
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p!nK | |
04-09-2011, 06:41 PM | #8 |
I wanna be Dave Join Date: Mar 2008 Location: Wayne county. PA
Posts: 2,507
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it still flatened a small bit, that is the nature of the beast in tight bends in small tube....but there was no kink in the tight bend in the picture....as long as those washers are tight on the tube no kink....good thing in how i made those mandrels is you can use a wrench to lock down on the tube and bend away without the tube moving ........bob .... |
04-09-2011, 06:43 PM | #9 |
I wanna be Dave Join Date: Mar 2008 Location: Wayne county. PA
Posts: 2,507
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give me a few days and i'll set up and bend a piece and show the tight bend .........bob .... |
04-11-2011, 11:54 PM | #10 |
RCC Addict Join Date: Jun 2007 Location: San Antonio, Tx
Posts: 1,093
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04-20-2011, 08:01 PM | #11 |
Newbie Join Date: Apr 2011 Location: big bear / barstow
Posts: 4
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wow thats cool
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04-21-2011, 05:58 AM | #12 |
Quarry Creeper Join Date: Nov 2010 Location: grand rapid mich.
Posts: 207
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can i interrest you in makeing me ome and how much would it cost me i need to now cost because i'm medcaly retired and have to plan on cost because of fixed income but a person who had a strock that left him parlized on rightside sure could use one of those for many things including help to hold stuff trying to get tools to build truck in futer havs a 1/8 redcat supercrawler as of now and son ang gandson have 1/10 trexras
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04-21-2011, 10:52 AM | #13 |
Proverbial threadkiller Join Date: Feb 2011 Location: Central Wisconsin
Posts: 1,453
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I'm just passing this along, I personally don't believe it, though. I have heard of someone filling a tube with sand to keep it from collapsing too badly. Don't know how well it'd work, never seen it done. On a rig such as pictured above, might get the inside of the bend flattened quite a bit, though. |
04-21-2011, 12:09 PM | #14 | |
I wanna be Dave Join Date: Mar 2008 Location: Wayne county. PA
Posts: 2,507
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look at the rear of my tubed frame i made with the bender i posted above.... as you can see there is no widening of the tube where there would be without any side support of a mandrel....i'll post up a new picture of a tighter bend then in any of these pictures to show/prove how my mandrels work like the best made production benders out there ...........bob .... | |
04-21-2011, 12:56 PM | #15 |
I wanna be Dave Join Date: Mar 2008 Location: Wayne county. PA
Posts: 2,507
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ok nay-sayers that say tube will kink/flatten with my bender, here are the pic's ..........bob .... |
04-21-2011, 01:46 PM | #16 |
No idea what I'm doing Join Date: Oct 2008 Location: Underground, CO
Posts: 4,529
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I've been planning on making one of these for awhile. I need to bend up some SCX shock hoops (need those scale points!!) and this will be perfect. Thanks for posting in this thread again Bob...saved me the hassle of searching for it |
04-21-2011, 05:27 PM | #17 |
I wanna be Dave Join Date: Mar 2008 Location: Wayne county. PA
Posts: 2,507
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hey no problem c.h.u.d....if you can drill a hole and tap it anyone can make this .........bob .... |
04-21-2011, 06:38 PM | #18 |
RCC Addict Join Date: Dec 2010 Location: middle,tn
Posts: 1,326
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dude that is kick ass im building one tonight i have a 50$ bender that kinks the tube when i bend it make shock hoops those washers are the secret nice ingenuity great job bob and ive already seen ur build they are just as sick keep up the good work, thanks for the tip
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04-21-2011, 08:46 PM | #19 |
I wanna be Dave Join Date: Mar 2008 Location: Wayne county. PA
Posts: 2,507
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hey thx a bunch j-b ....only thing i find with this one i have now is, there is no work surface....i'm making a new plate that will be bout 8" x 8" in the same thickness as the bar stock i have now....that will help with keeping the tube parallel when the get bent around like in the pic........bob .... |
04-22-2011, 12:22 PM | #20 | ||
Proverbial threadkiller Join Date: Feb 2011 Location: Central Wisconsin
Posts: 1,453
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I see stuff like this, and I think "Geez! What would the X,Y,Z chart look like for that?!?!" (X,Y,Z chart tells the CNC bender how to make the part) | ||
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