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Originally Posted by Tradewind
There is a twin screw kit being released in like 2-3 weeks time by PMI, refer to the Bullet Supercharger kit in this forum section if you doubt me
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the bullet SC is nothing more than an off the shelf SC bolted to a custom manifold. now this on the other hand requires a lot more work...
i dont expect to see such a kit come out in the near future...
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Impeller tip speed - the higher the rpm the more likely the unit runs hotter and will have a shorter lifespan. High tip speeds certainly dont give an edge in any other way apart from being able to reduce the size of the compressor and whizz more air through a smaller compress as the inducer speed is higher than a large unit.
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isnt it the other way around? because vortech's cant spin very fast, they are forced to use larger compressors?
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Tip speed - more about final pressure in a basic sense, somewhere around 320m/s is around 10psi depending on the unit used, you might as well go a larger diameter impeller and slow the trans down - maybe something like Vortech would do -
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why slow it down if it can handle the speeds? is the large impeller a design choice? or compensating for the lack of impeller speed? because the rotrex design can most likely accommodate a larger compressor spun slower. but the vortech design is rpm limited. is this not the case?
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since this is their thread when all said and done
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this isnt a vortech thread. its a SC thread. also i have no vested interest in what's "better" or not so whatever i say is just my opinion and not a sales pitch. fwiw RUF uses rotrex. Koenigsegg uses rotrex. HKS chose rotrex. not to mention Lotus and TRD too. just sayin...
PS: im not knocking vortech in any way. im sure their upcoming SC is great. its just that rotrex's newer design perhaps has untapped potential and we should wait and see before we jump aboard any bandwagons...