Are these for real? Donut mandrel bends

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Sep 17, 2007 | 11:09 AM

TurboTim

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Are these for real? Donut mandrel bends

http://www.hrpworld.com/index.cfm?fo...action=product

Sep 17, 2007 | 11:12 AM

cjernigan

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I've seen them used for real tight radius's, a guy on the forum actually had one sitting in his garage when he said he was going to be building his own exhaust.

Sep 17, 2007 | 11:13 AM

Zabac

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those are nice for buildung mani's...

Sep 17, 2007 | 11:14 AM

Loki047

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allows you to weird bends that arent made

Sep 17, 2007 | 11:17 AM

Ben

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Yes, that's how you make these:

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Sep 17, 2007 | 11:22 AM

nester

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Yes, they are a welded seam type deal. We used them on our DP's for Scion's.

Sep 17, 2007 | 11:30 AM

clay

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My buddy bought some and used them to fab up a tight bending turbo intake pipe. I'll see if I can find some pics somewhere because it looked niiice..

Sep 17, 2007 | 11:40 AM

Zabac

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its too expensive there, plumbng suppliers have them for cheaper i think...i can get those made from a friend also, not sure how much, but not nearly what they want...

Sep 17, 2007 | 11:41 AM

Loki047

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jc whitney has em too

Sep 17, 2007 | 11:44 AM

#10

PAT!

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Are they stamped and welded?

Sep 17, 2007 | 11:47 AM

#11

Loki047

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ive only seen stamped, but those look like tha they have a seam.

Sep 17, 2007 | 12:02 PM

#12

y8s

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road/race sells them too. I think they're like seven hundred dollars.

Sep 17, 2007 | 01:03 PM

#13

TurboTim

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I wanna know how they are actually manufactured.

Sep 17, 2007 | 01:04 PM

#14

Ben

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I would think halves are stamped and welded. I'm too stupid to figure out any other way.

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Quote:

Originally Posted by concealer404

Buy an MSPNP Pro, you'll feel better.

Sep 17, 2007 | 01:25 PM

#15

y8s

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pretty sure they're formed cake-tins and welded halves.

Sep 17, 2007 | 01:31 PM

#16

cjernigan

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The inner seams have to be finish welded when you cut it apart as well. Only the outside seam is completed.

Sep 17, 2007 | 02:25 PM

#17

Arkmage

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I've seen them hydro-formed from flat plate and then welded on the OD seam. The ID has no seam on the hydro-formed units.

Sep 17, 2007 | 03:06 PM

#18

TurboTim

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Ahh ok, thanks. That makes sense. For tight radii I've been using ATP's tight radius 90's and 120's. This is another interesting option.

Sep 17, 2007 | 11:54 PM

#19

Markp

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Quote:

Originally Posted by TurboTim

http://www.hrpworld.com/index.cfm?fo...action=product

Yes they work awesome but they have an inside seam that needs to be welded.

Sep 18, 2007 | 08:24 AM

#20

TurboTim

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Now links to less expensive versions. I know you have them!

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