now thats an interesting idea. i wonder were i could get a spring that would be the right size.datadavid said:Ole yoshi probably taught his guys to bend with a spring inside. Does the same trick as sand.
doc_rot said:now thats an interesting idea. i wonder were i could get a spring that would be the right size.
And plentiful of different diameters at the breakers!I've never done it myself, but as a pipefitter welder i pick up a few things from the old boys..hillsy said:Fork spring? Sure would be strong enough.
canyoncarver said:Sounds interesting getting the spring out of the pipe after bending..
THat's why I said he needs to get full diameter bends. Here's a drawing of the process. My point in bringing it up, is the process is usually a custom process and off-the-shelf full diameter kits are typically not offered. The majority of local shops don't offer it either. We always run full diameter pipes on our drag cars.jpmobius said:I think your pipe looks great in the pics, though I can see noticing any lack of uniformity being a lot more obvious in person. You may have the right idea combining manufactured bends and torch bent sections. Personally I like the more organic look of the hand bent pipes but if you can't make the tight radius portions acceptably than grafting in a pre bent piece for that portion would seem to be a way to get the best of both worlds. Deviant, your pic is not a drawn over mandrel tube. In the main, a mandrel is an internal die like a round ball on the end of a long pole that is kept located inside the tube where the forming operation is happening, but the term mandrel is often used for all sorts of fixtures including outside parts so there is some ambiguity. Proper mandrel bent tubes have perfectly round sections and are indistinguishable to the eye from the straight tube. Here is a 2 1/4" dia stainless steel tube with a very tight bend.