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Race Car Fabrication There is a lot of cool fabriaction going on the race car industry, show us what you got.

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  #1  
Old 01-12-2021, 01:40 AM
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Thinnest 1.5" tube for clean 6" bends?

Need to form up a 1.5" mild steel tube structure that is mostly to support the fiberglass body.
Not really structural as it is a ladder frame.
How thin may I go on a 6" centerline without undue risk of kinking?
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Old 01-12-2021, 04:43 PM
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Maxx Levell Maxx Levell is offline
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What kind of bender? I've done 180 bends on .120 wall with JD2 Model 3. Never tried anything thinner than that on MS. Sounds like you're wanting thinner than that though lol.
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Old 01-14-2021, 12:57 PM
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Yes, JD2 M3.
I need to keep the build as light as possible with the exception of the roll hoop.
1.5" as that is the only 6" CL die I have.
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Old 01-15-2021, 12:57 PM
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Based on the recommended wall thickness range they provide below for 5.5CLR and 6.5CLR dies, the min is going to be somewhere between 0.065 and 0.083. Thinner is just going to flatten out more and be more difficult to weld. Even on a ladder frame, I'd error toward the thicker side unless you want to spend time reinforcing any structural connections. My brother has built a few manx-style buggies and vw sandrails out of 1.5x0.095 HREW. I've noticed over time lower members like bumpers and siderails end up with dents. DOM would be a better bet IMO.

https://www.jd2.com/model-3-die-set-...und-tube-15-od
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1.5" tube, 6" centerline, mild steel


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