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Old 05-10-2007, 03:24 PM   #1
cp6rider
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wsbk

How does the 999F07 L-twin compare to a v-twin. In world sbk the L-twin keeps up or beats the 1000cc engines, is this because of the L and not the V-twin version? does the l-twin compare more to a 1000cc 4 cylinder engine performance. on the street doesnt a 1000cc v-twin have the same power as a 750cc 4 cylinder.
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Old 05-10-2007, 03:38 PM   #2
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on the race track...those bikes are heavily modded. Nothing even slose to street hp.

street/production bike...liter twins are somewhere in the middle between the 750/1000 I-4's.

L or V really has no difference. just another way to make a motor.
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Old 05-10-2007, 03:46 PM   #3
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wouldnt a heavy modified 4 cylinder beat any heavy modified twin cylinder
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Old 05-10-2007, 05:32 PM   #4
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Quote:
Originally Posted by cp6rider
wouldnt a heavy modified 4 cylinder beat any heavy modified twin cylinder

obviously not seeing as ducati has been a kicker on the race circuit for years. Same as the rc51 a few years ago.
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Old 05-10-2007, 05:57 PM   #5
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Yes, L is just the angle. Ducati are 90 V twins.
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Old 05-10-2007, 06:05 PM   #6
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I believe the engineers choose the angle of the engine based on the constraints of the chassis. I've never heard of any power advantage/disadvantage solely based on the "V" angle.
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Old 05-10-2007, 06:10 PM   #7
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ducs 90...honda 60..buell 45 i believe
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Old 05-10-2007, 11:40 PM   #8
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Quote:
Originally Posted by cp6rider
wouldnt a heavy modified 4 cylinder beat any heavy modified twin cylinder
Not when there are restrictions in place.

For example, within the rules of WSBK, Ducati (or twin cylinder engines) are allowed more freedom in how far they can tune their engines to make them competitive with the inline 4's. In the past, they were also allowed a lower minimum weight limit which helped spare their tires.

Ducati is pushing for 1100cc limit for twins in WSBK so they can use their new 1098, but I say hogwash. They are allowed too much freedom as it is.

When asked why they want the extra displacement when they are still winning races (and a championship last year), Ducati says it's because they have to use a very high state of tune with their engines which is expensive for them to do. So in effect, having the 1098 would allow them to run a supersport tune and compete with the inline 4s and allow them to tweak in fine increments to stay ahead of the I4s. :laughing6

Nice try Ducati. Shame on WSBK if they accept the proposal for the changes.
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Old 05-10-2007, 11:46 PM   #9
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I believe WSBK has accepted the proposal........
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Old 05-11-2007, 12:01 AM   #10
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Quote:
Originally Posted by BrutusTx
I believe WSBK has accepted the proposal........

Not for Superbike as far as I know. It is allowed in 1000cc Superstock though.
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