Alternative engines

PGkelly · 03-13-2001, 01:07 PM

oh, yeah. Duc's are horribly unreliable, and the top-of-the-line superbike needs adjustments every 2,500 miles. Rotary engines are large when compared to engines of similar displacement, but they make much more power for their size. and since they have significantly fewer moving parts, there is less maintenance to do. But don't forget, the reciprocating piston engine has had the benefits of a century of technological advancements from hundreds of different companies. the rotary engine was invented in the fifties, and so far has been used by Mazda, NSU, and Norton (motorcycles). And it doesn't need a turbo (or forced induction) to get power. naturally aspirated rotary engines killed so much on racetracks that it had an engine speed limit placed on it, and a 50kg weight penalty (in the form of lead weights). it's simple design, however, does not lend itself to tuning. most of the engine modifications you can do involve auxiliary bridge ports (intake), exhaust tuning, and porting/polishing the intake tract. you can't really bore it out, and to increase compression you get a rotor with smalled "dimples ". It also runs a lot smoother than a reciprocating engine.

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If it ain't broke, make it go faster

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03-13-2001, 01:07 PM	#1
PGkelly Registered Member Join Date: Feb 2001 Posts: 274	oh, yeah. Duc's are horribly unreliable, and the top-of-the-line superbike needs adjustments every 2,500 miles. Rotary engines are large when compared to engines of similar displacement, but they make much more power for their size. and since they have significantly fewer moving parts, there is less maintenance to do. But don't forget, the reciprocating piston engine has had the benefits of a century of technological advancements from hundreds of different companies. the rotary engine was invented in the fifties, and so far has been used by Mazda, NSU, and Norton (motorcycles). And it doesn't need a turbo (or forced induction) to get power. naturally aspirated rotary engines killed so much on racetracks that it had an engine speed limit placed on it, and a 50kg weight penalty (in the form of lead weights). it's simple design, however, does not lend itself to tuning. most of the engine modifications you can do involve auxiliary bridge ports (intake), exhaust tuning, and porting/polishing the intake tract. you can't really bore it out, and to increase compression you get a rotor with smalled "dimples ". It also runs a lot smoother than a reciprocating engine. ------------------ If it ain't broke, make it go faster