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    • 3D printed Indy Roadster chassis I thought I would let everyone know about my progress in designing, building and testing a 3D printed chassis for our Indy Roadster class. For nostalgia's sake I've been working on an Eldon Indy Roadster which  roughly represents the Watson Roadster of the time.   As my printer has a very small bed the chassis had to be made in two pieces and aligned with piano wire pins, this does give the advantage of a wheelbase that will adjust to most roadster bodies. . The whole process has helped me use up any spare time that I thought I had as I had to diagnose and partially rebuild my printer ( each new part took a month to arrive and I didn't get it all figured out the first or even the second time) and then had to start learning Fusion 360 in order to make the kinds of designs I was interested in. I can't tell you how many iterations I printed that didn't fit the way I was expecting before I realized that my thumb had been hitting the reset button on my digital calipers. I am getting close. Here's the latest test fitting. One of the greatest design challenges was getting the ff050 completely ahead of  the edge of the cowling in order to comply with the spirit of a front motored build. The problem is that those tiny slim line motors are proportionately bigger than a V16 and its tough to get them into the space that originally had a 4 cylinder. Now I'm going to order axles, gears, bearings and a guide to make sure of my final measurements. In the meantime I'm going to start working on the body again. I hope that by this fall we can have an in person debut of the Indy roadster class. I look forward to seeing all your designs. Cheers Steve

      Started by: Avatar photoracer68 in: Class Eligible Bits & Pieces

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