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Location: Brisbane
Registered: May 2002
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Re: Triple Turbo Theorem
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Tue, 10 June 2003 02:32
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The idea behind twin parallel turbos is to reduce the rotational mass of the turbos. Each turbo in a TT setup has a small, light turbine and impeller wheel. Even when you combine the mass of the two, it turns out to be less than a larger single turbo of a similar capacity. The rotational mass is an important factor when it comes to reducing lag; remember those wheels need to be accelerated to insane speeds (up to 100,000rpm) before they start making boost! This is also the reason for ceramic turbine wheels; they're much lighter than steel wheels.
As for the triple turbo idea, it's nice in theory but making it work in practice would be well and truly beyond the resources of the back yard tinkerer. There would be lots of trial and error involved, and the results aren't guaranteed. And let's not even mention the plumbing nightmare such a beast would create!
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