does anyone know of a good source for solid model files of common off the shelf trailer components? ie: some common axles, fenders, couplers, jacks, etc. the company I work for builds completely custom trailer running gear and trams but on occasion we need to build something more simple but instead of building our own version of these components we'll be buying them and the suppliers tell me they can't get any kind of CAD files at all for them. so before I spend hours drawing this stuff myself I thought I would check here to see if maybe someone has already done this or knows where someone has. since I'm not interested in modifying them at all the format can be most anything. I'm using Inventor 2009 and can import almost any format including Solidworks and Pro-E.
Thank you
Tom Leaf