What a sec...I just realized the original poster is asking for mandrel bends of 2.5" tubing with a radius of 3" or smaller...That's damn near impossible. Pre-cast is the only option that won't cost a tonne of money.
That's SCH 10 pipe. 2.5" SCH 10 pipe is about 2.75" OD. Pipe is measured by ID, tubing by OD.
Originally Posted by Chaotic_FC
I snagged this from the s475 buildup over in the single turbo section:
These mandrel bends are 3" diameter, and appear to have the hell of a tight bend, what looks like a 2.5 radius to me.
he said he got it from a local supplier in sweeden.
Those appear to be cast weld els, and are also aluminum. Steel and aluminum are two different metals with different characteristics. Aluminum often has a lot more stretch then steel, depending of course on the exact alloy and heat treat.
As I said, you want "ornamental tubing" weld elds.
aaron u are right and wrong i have bought them in the past and they are not cheap i have gotten tight radius tubing from racing solutions out of portland oregon and also from burnstainless, the op need to search for doughtnuts is the term they use
they caught me riding dirty ............... i was driving a honda