Talk Composites - The Forum for Advanced Composites

Structural car parts

http://www.talkcomposites.com/Topic8574.aspx

By themadscientist - 11/23/2013 8:09:22 AM

I've been watching the videos, and first off thank you for the inspiration. I was amazed how similar the process was to fiberglass. I have a question that probably requires some expertise and experience. I wan't to make a subframe (k member, cross member) for an Audi. The stock steel piece is incredibly heavy. It does support the weight of the engine and takes a load from the lower suspension bits. I have background in metal fabrication and design, but I'd like to try it in CF before jumping straight to aluminium. 

I'm already planning on using a core material like aluminum honeycomb, unless suggested otherwise. The main thing I want to know is what is the BEST carbon fiber types/styles to use. I know it will require just a little flex as the stock unit does, but it still needs to be incredibly stiff and strong.  I'm already prepared to fail as I know this is usually only done on very high end supercars so I imagine it will take some trial and error. I'll be using machined solid aluminum inserts to reinforce the areas where bolts go through and would normally crush it. 

Thank you for your time!
By wozza - 11/29/2013 9:25:47 AM

themadscientist (29/11/2013)
I appreciate everyone's input! I got a chance to talk to someone locally who has massive experience with CF and he told me the shock loads and weight of a 3000lb car would likely destroy it in short order. I'll be sticking to front end panels and other items. Thanks everyone!




Sounds like a plan, good luck. Try and enjoy it, things can be very frustrating in the early days.

Warren