I want to do the piping from my intercooler to intake manifold but when i measure with a measurement tape this is what i came up with but the shop i call said i need to tell them what type of radious bends i dont understand.If someone can tell me how to do the math to get the proper radious bend i would be so happy.
Thanks.


29" pipe with a bend at the 4" mark.
a 24"pipe with a bend at the 17"mark.
a 22" pipe with a bend at the 10" mark.

 

first off. have you taken a geometry class? and do you know what radius is?

if so, it shouldnt be that hard to figure out.
get a small 3-4" r and thatll be your best bet

 

sorry am a high school dropout

 

The bend radius is a distance from the center line of the tubing to an imaginary center point that the tube is bent around.

Say you want the tubing to go around the block width C in the drawing below. If you wanted to use a one piece U-bend to go around the block, the distance between the two centerlines would be C + D/2 + D/2. From the center of the arc that the tube is bent around, the distance would be (C+D)/2. This distance is your bend radius. Keep in mind that if you want to use tubing with a smaller or "tighter" bend radius, you can always have a straight section welded after the tubing makes a 90 degree turn.



Sorry if its a little difficult to follow, I'm trying to do all of this while talking about Fourier series and whatnot over the phone.

 

Before getting too crazy with dimensions, you should sit down with the fabricator and ask him how he wants the data presented to him. Does he want measurements based on the centerline of the pipe or inside diameters? What radius bends can he do (limited by the machine he has).

You should also think about doing full-scale drawings. Draw it up on a sheet of cardboard. By doing this, it verifes any dimensions you may come up with mathmatically.

Think about mocking up the parts out of PVC tubing. (a friend was building a custom Harley frame and made up the sections from electrical conduit tubing, then took them to a shop to be copied)

Wes V

 

Nice diagram of the bends, well basically, the center-line radius is tangent on the bend die, using a 3/4 radius bend die with a draw back type cnc mandrel tube bender will consist a y(straight) b (rotation) c (angle). depending on the angle you are trying to bend, you should mark the length of straight, and the beginning of the bend, use this formula to understand how length you would like the "y" to be, and the measurement in inches of the actual radius of the bend, i forgot the formula, it should be in my head but I'm not registering my memory right, I hope this helps.

 

thanks, I understand a little bit now
i not really good in math but i think i just going to buy 4 90* 2 45* 2 180* and 2 stright.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by seamoss &raquo;</TD></TR><TR><TD CLASS="quote">sorry am a high school dropout </TD></TR></TABLE>

mee too

 

good thread learned somethin 2day