Does anyone know how tight you can make a mandrel bend? I am looking for the smallest radius 3" elbow I can find. I have found a 90 degree 3" elbow that is bent on a 3" CLR, but I'd like one even closer than that? Is it possible?
Tight radius mandrel bends
- Thread starter JoshH
- Start date
Josh the closest Ive found was this:
http://www.racepartsolutions.com/proddetail.asp?prod=RPS-DONUT&cat=47
http://www.racepartsolutions.com/proddetail.asp?prod=RPS-DONUT&cat=47
http://cgi.ebay.com/ebaymotors/3-OD...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories Already beaded and hose-ready. 
Looks like he has other sizes in his store, too.
http://www.verociousmotorsports.com...ws/Tight-Radius-90-Degree-Cast-Aluminum-Elbow
http://www.roadraceengineering.com/mandrelbends.htm
Theres a lot more, but that was just a quick google of "Tight radius elbow".
Looks like he has other sizes in his store, too.http://www.verociousmotorsports.com...ws/Tight-Radius-90-Degree-Cast-Aluminum-Elbow
http://www.roadraceengineering.com/mandrelbends.htm
Theres a lot more, but that was just a quick google of "Tight radius elbow".
Last edited:
Steel or Aluminum?
1 x Diameter is as tight as you're likely to find in a mandreal bent piece.
1 x Diameter is as tight as you're likely to find in a mandreal bent piece.
Last edited:
I'm looking for steel so I can weld it to my 3" Banks tube. The 1D is what I found, so I guess that's my only option unless I do mitre cuts and piece it together. Wouldn't be as pretty, but I could get a 1.5" radius bend on a 3" pipe that way. Do you guys think that would hinder flow that much? Say I did it with two cuts to get the angle I need. The stock boot is somewhere around a 75 degree bend, so the two angles would be less than 40 degrees each.
If you buy the bend and miter cut it a couple of times it wont be too bad. Be sure to clean up the seams inside with a die grinder though.
It won't be any more restrictive than the stock boot, but I'll look at other routing options.
