tube bender

[stevebaz]

My dilemma is I need to buy a set of JD2 model 3 bending dies for 1-1/2" tube. I can only afford 1 set of dies. I don't want to make a mistake and order the wrong set. they are available in 4.5" radius , 5.5"R, 6.5"R, 7.5"R which one should I buy for cage work on my buggy? Its a hydraulic bender so manual force is not an issue wall thickness will be .095 or .120 wall. My initial guess is 5.5"R

Thank you for your time.

[cbeck]

I don't remember if it was 3x or 4x the tube od. Speaking of buy once cry once , consider 180*dies instead of something less.
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[stevebaz]

I was already planning to suck up to the 180 dies. Thank you cbeck for your response.

[no1clyde]

This car was built with a JD32 bender with a 4.5"-1 1/2" die

The 5.5 may be a better choice but this is what I had to work with.

Ed

[thesatelliteguy]

I have built a few roll cages using a 6.5” clr on my JD2. I’m happy with it, but a little tighter might be nice.
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[Dale M.]

Some place I remember it was recommended to use a radius 4.5 times the diameter of the tube.... So a 6.5 is pretty close.... Might have been at "Blind Chicken Racing"... IF radius is to big the bend takes up a lot of space....

Dale
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"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
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All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...

[TDCTDI]

SCCA, NASA, & FIA require that diameter of bends are at least 3x the tubing diameter.
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[stevebaz]

thank you all for the responses.

[jsturtlebuggy]

I am using a JD Squared model32 and a 1-1/2in 5.5 radius 180 degree die.
It closely matches the radius of the aluminum windshield frame on a buggy and many buggy chassis’s roll cages.
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Joseph
Fair Oaks/Orangevale, CA
Elrod Motorsports
Motion Tire Motorsports
Having fun with Dune Buggies since 1970
Into Volkswagens since 1960

[stevebaz]

thank you I have pretty much settled on the 5.5 die. thank you for all the help. now to spend that stimulus money.