03-13-2009, 06:47 AM
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Admin Moderator
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Join Date: Jul 2007
Location: inthewoodsofsouthernky
Posts: 5,744
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Quote:
Originally Posted by fireblade929
usually what holds a bike back when it comes to rpm's, is the valve springs, they can't keep up. Those HRC springs are supposed to be able to help solve that. After the spring, the next issue is connecting rods, and the pistons themsevles. To save weight, most modern pistons have shorter and shorter skirts, this works well for the most part, until the pistons and cylinder walls begin to wear heavily. of course high rpms are rough on most engines, but with the new materials they are using, and lightening up the crank, rods, and pistons have helped immensely. Still have to have some bad ass Valve springs tho.
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gotcha  after that, if you want more rpms, you go pneumatic!
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1998 CBR F3 R.I.P.
2004 zx6r R.I.P. 
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