Re: Exhaust System Modelling

Posted by Bob J On 2023/9/1 21:59:56

Sorry you were so disappointed with the PDF. The intent was to help someone do something they may have not thought they would be able to do on their own car.
OEM would not work as in this case there are 2 different platforms, the exhaust pipe has a different manifold angle and diameter to a 37 and the chassis is different than the 53 Patrician, so comparing the results to any off-the-shelf product for the case study I did the article for is moot.
The model was made so the shop I dealt with, which reflects the majority of muffler shops I have seen, could simply bend stock pipes on their hydraulic ram to the form I created, yes there are 3D mandrel bending shops but this was not one, and there are none locally. (I could have made it as a 3D model as that is my life too but what good would that do in a shop not equipped?)
I also did the description for the vast majority that have neither access nor knowledge of any 3D modelling. I was not intending to create a model other owners could use as I doubt very much my particular combination of requirements will be duplicated again.
The muffler itself was custom made at a different shop to a drawing I supplied with a given tolerance to accommodate their process requirements. Knowing that the muffler would likely not be exact, allowance was made by lengthening the pipes slightly at the muffler joint. The trimming was simple and quick again by having the model for reference.
Cost was very good. $120 for the muffler. $300 for all stainless steel pipes, and $20 for the hangers and clamps. Labour was $100. (All prices in $CDN).
I am afraid that I am bashing my way through this DIY land as I work on my car. I thought that is what our hobby is about? Wrong again, but then I am only an Industrial Designer.
I will be sure not to bother posting again.
Signing off,
Bob J.