Downpipe centerline radius

JD Squared is having a sale on tube benders. The Model 32 is marked down $200, so even though I'm not ready to start this project yet, it wouldn't be a bad idea to purchase the bender now at this price. My goal is to build a downpipe-back exhaust out of 2.5" stainless. I might as well get the die set right now with the bender just to save on shipping in the future. Probably a long shot question, but does anyone happen to know the centerline radius of the downpipe?

Edit: No, I cant measure it myself anytime soon.

 

[TylerAdamson]

Wrong kind of bender. The jd2 benders are designed to bend thick walled tube/pipe for chassis fabrications. The biggest die you can buy is 2''. If you try bending exhaust pipe, it will crush it.

 

JD Squared lists a 2.5" round tube die for the Model 32.

Model 32

I'm planning on using a Bend Tooling mandrel and wiper die to prevent pipe collapse. I'm still looking into the details, but as far as I can tell, the high-dollar mandrel benders are nothing but a rotary draw bender with hydraulics, a cable system for the mandrel, a long bed, and may be programmable. Provided a means for positioning the mandrel and wiper, I dont see why it can't bend 0.049" tube. The clamp die might collapse it I suppose, but I'd think a high-friction rubber insert or something would prevent clamping slippage with less pressure.

Edit: Unless there's some other reason you can think of?