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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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    • 2 years ago

      Avatar photoDB

    • Wheels: Sportscar, Classic Stock Car, Trans Am & 1960's G.P. (Group 2) If you still have a set of the BW15-275-093-375 or BW15-275-093-450 consider yourself very lucky. For those that do not the CB Design Insert Wheels (15 x 7mm) PART NUMBER IW1507S are an appropriate and cost effective aluminium wheel to use in any of the following classes: Sportscar Classic Stock Car Trans Am 1960's Grand Prix (Group 2 Cars - ONLY) Classic LeMans (for any car taking narrow wheels, such as the Carrera 6) Some of the confusion stems from the fact that for the CB Design line of 15" wheels it is unclear what the 15 stands for (likely scale 15") added to the fact that with each wider version of the 15 series wheel the overall diameter changes. The IW1507S measures 14.06mm in diameter and 7mm in width which accords with our R32 rules for these classes. Other wider versions of the 15 series may be too large in diameter and therefore not permitted under R32 rules. (The reason stems from the fact that in any fixed gear class you can change the gearing by using a taller wheel/tire combination.) Nevertheless the IW1507S remains a competitively priced, readily available and safe bet alternative to the old BWA wheels for each class listed above. It makes sense to buy a bunch and then know that they are eligible for several of our classes. Of course there are other makes and types out there, some of which are also eligible for some of the classes listed herein. The IW1507S takes any DArt D8 or D9 tire (or other Ninco classic alternative). Glue on your tires for best performance - when gluing make sure that the rib in the tire is tightly set against either side of the rib to ensure there is no wobble. [One difference between the BWA wheel and the CB Design wheel is that the wheel 'rib' is a hair narrower on the CB than the BWA.] If you do not wish to glue on your tire then the NC0202 or SC0805 tires are the most snug fit. No truer? Then stick to the NC0202. You can try your luck at RaceHaven if Ron has them in stock, or at MiniGrid, or you can order from Slot Car Corner Canada at: http://www.slotcarcorner.ca/cb-design-insert-wheels/ I now have inserts to fit these wheels. The inner diameter for sizing inserts is .490" (or 12.45mm). There are three insert wheel styles which fit these wheels: 490steel60; 490mag5snut & 490minilite, but more will be added over time. Note: These wheels may be listed as 'made in Canada' but there is nothing Canadian about their manufacture, nevertheless they remain a suitable and well performing alternative for several of our classes and therefore worth suggesting here. -Art

      Started by: Arthur in: Class Eligible Bits & Pieces

    • 2
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    • 4 years ago

      Avatar photoKen

    • Wheels: Hot Rod, 1950's Grand Prix, 1960's Grand Prix (Group 1) Those of us who no longer have the BW15-200-093-450 (skinny) wheels can get a similarly sized copy from RS Slots in the U.K. These wheels PART NUMBER: RSW001 are suitable for our: Hot Rod (use the SC0120 tire - either blackwall or whitewall (special order)) 1950's Grand Prix (use the SC0120 tire) 1960's Grand Prix (Group 1 - use the SC0118 tire) and (very nice front wheels for early Group 2) Sportscars (for early era cars - use the D7 tire measuring 7mm in width at the sidewall) Fill in his online form, he'll request payment via paypal and throw your order in a bubble pack. You should get your wheels in 10 days or so - shipping and customs are VERY reasonable. - Art

      Started by: Arthur in: Class Eligible Bits & Pieces

    • 2
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    • 5 years ago

      Avatar photoKen

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