Joe Harlan
New member
Originally posted by Matt Rowe@Dec 8 2005, 02:47 PM
Darin, the concept is interesting, but every application I have seen these used on has wide open engine prep rules. With our restrictive head, intake and cam rules I'm not sure we would end up with the parity you would expect. For example if torque is not effected up to the stall point of the SIR then a rotary will still be at a disadvantage to a inline 6 with the SIR to weight ratio. And because area under the curve is more important that peak power I think you will still see people spending money to get everything out of the motor they can at engine speeds below the effect of the SIR.
SIR's are worth looking into but no work has been done to determine if production level rules, much less IT rules will affect how well a SIR will work. It's a little premature to think there isn't some quirk out there that we have to plan for. Now, who wants to do some testing?
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Matt your kidding right? IMSA,CART,BTCC blah,blah.....This technology has been around for a way long time. Sure getting everything under the curve would be important that's racing. But limiting HP to a know quantity sure makings using somall amounts of weight more effective. If I here the rotary torque argument again I will prolly puke. What they don't make in torque they make a up in RPM and gearing. How many other IT cars can run gears in the 5:** range.
Http://www.raetech.com Go information on SIR's and how they work.

