So a little bit more work done. I've taken the dimensions from the FOS exhaust concept and created my chamber in Solidworks. So far it's looking good. I used the a spline tool to create very smooth transitions between the changing diameters.
I will have to wait until tomorrow evening when I can use the 2015 solidworks to generate the flat pattern from this but I think it should be fairly straight forward.
Love it!!
You shoud take some detailed pics of it so I can "study" it.... and maybe copy it to make my own. I can see having to have a few attempts at the hydroforming......
Title of thread changed as requested by the original poster.
Zen wisdom: No matter what happens, somebody will find a way to take it too seriously. - obviously had KB in mind when he came up with that gem
Artificial intelligence is no match for natural stupidity
Well I had a fairly productive evening. So many other jobs to do but I couldn't get the Pipe out of my mind so I went and welded the flat pattern together.
With a bit of luck will pump it up tomorrow and see how it comes up.
Well, not a bad start at all! It is remarkable how much the metal stretches through the center section!
I decided to simply do the template by multiplying the diameters by (d*pi)/2 and then took a stab in the dark regarding the header angle change.
Because the metal stretched so much through the center it made the material ripple a lot more than I was expecting.
I didn't bother putting a relief valve on the fitting for this attempt I thought I'd give it a go with out it. Needless to say I really need a relief valve as well as a pressure gauge.
Anyway enough with the words, here's the result. Time to have a measure up and a second attempt.
Well done - that is very cool. Nice effort for the first time out.
seem to easy. but seriously... looks good for the frist time!
Nice job Sketchy!
Did you try the middle section support method, in the beginning of hydroforming? It´s somewhat dangerous method, if the vise decides to crack under the huge load... But that´s what the wrapping of vise with durable rope is for! With that method I´ve been able to get the belly streching somewhere bethween 2-4%.
Can ya not make some sturdy bands to go around it to stop it stretching?
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