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ddyke	Making Wheels	Lead	[-]
Posts: 3094 (03/02/08 02:28 PM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Tags : None I was wondering what is the advantage of a raised center rib on a wheel over a center groove? Dan Scrappy Dan panem et circenses = the next election's motto
ddyke	Wheels	#1	[-]
Posts: 3095 (03/02/08 09:45 PM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I did a quick graphic of what I am asking. Why is type B preferred over type A? Scrappy Dan panem et circenses = the next election's motto
SJSlots		#2	[-]
Posts: 1811 (03/03/08 07:10 PM) HRW Feature Editor! Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I have some nice vintage 1/24 wheels that are type A and PPR SuperWheels are type A.... From a mass production point of view a raised center rib means using less rubber when making a tire. The amount might seem trivial but make a few thousand tires and I'm guessing the difference is measurable in cost. " If you can't beat em'.... beat ON them!" Shawn@HomeRacingWorld.com Cincinnati, Ohio U.S.A -------------
TightLip		#3	[-]
Posts: 66 (03/03/08 07:19 PM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Personal preferance Dan, I prefer type B. Only because I would rather not have the big rib showing outside the tire. Looks better with inserts if the rim is barely visible (to me)
ddyke		#4	[-]
Posts: 3099 (03/03/08 07:43 PM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	The rib does not show the way I mold them. I macvhined a brass mold with a curved side. Externally the two look the same. Scrappy Dan panem et circenses = the next election's motto
ElSecundo		#5	[-]
Posts: 5728 (03/04/08 09:25 AM) Home Racing Guru! Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Shawn, I was thinking the same thing, but 'less rubber' also translates into 'more plastic' or 'more metal' on the wheel. I'd prefer Type A wheels -- they'd be lighter, with less mass at the rim (and less rotational inertia). Also, the one are where the Type A wheels are beefed up is where the wheel is weakest, so that's an added bonus. I'll tell ya...fellas......you're gonna want more cowbell! Rock legend Bruce Dickinson
SJSlots		#6	[-]
Posts: 1814 (03/04/08 04:38 PM) HRW Feature Editor! Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	A lot of manufacturers make multi piece wheels though. Can you make a good strength multi-piece type A wheel? Do you need to? Now I'm wondering why multi-piece are what many are doing.... " If you can't beat em'.... beat ON them!" Shawn@HomeRacingWorld.com Cincinnati, Ohio U.S.A -------------
slider2		#7	[-]
Posts: 838 (03/06/08 05:30 PM) Home Racing Guru! Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	SJSlots wrote: A lot of manufacturers make multi piece wheels though. Can you make a good strength multi-piece type A wheel? Do you need to? Now I'm wondering why multi-piece are what many are doing.... ---------------- The only thing that makes sense at all is that it is a cheaper process to mold, de-mold, clean up flashing (Hah! on that last one) and re assemble with a multi-piece wheel mold. Type "A" is a more complex casting, or machining process, but I prefer it. It could just be nostalgia, though, because that's what I cut my teeth on. Regarding performance differences, I suppose it is theoretically possible, but I'll bet practically unmeasurable. The differences would come in as "sidewall flexation". To make an almost absurd comparison, tire mounted on a wheel with a high center rib would act more like an extremely low profile tire mounted on a 20" rim - ie. less sidewall flex and lateral movement but at the cost of a "harder" ride. The wheel with the depressed center would take a taller, unsupported, tire with the opposite effects manifested - ie. a softer ride and more lateral chassis movement in relation to the tread contact patch on the road. I think... Greg Last Edited By: slider2 03/06/08 05:33 PM. Edited 1 times.
RichD		#8	[-]
Posts: 1306 (03/07/08 08:59 PM) Home Racing Guru! Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	It's a conspiracy! With a double flange hub you only have to worry about matching the diameter and width. With center ridge wheels you have two more variables, the width and height of the ridge. The center ridge design makes finding matching tires more complicated. As for two piece wheels wheels I think you are likely to have twice as much trouble with them.
jd of racing	wheels?	#9	[-]
Posts: 58 (03/18/08 08:52 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	ddyke,are you making wheels for others? i would be interested. can you send some pictures to my email address below? thank you, jd msjdracing@rtmc.net
ddyke		#10	[-]
Posts: 3113 (03/31/08 06:17 PM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	No, as it is too time intensive at least for now. I measure 85 times, cut once, screw up a bunch. I only make wheels I can't get. BWA will expand his line when he gets funding. He hopes to bring out a small wheel for Sprites and Midgets. My loving wife just bought me another cutting tool for the lathe that should speed it up. The last wheel took about 45 minutes. DAN Scrappy Dan panem et circenses = the next election's motto

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