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The sound from a ducati v-twin is just incredible, thanks for posting that.
 

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If you just look at the torque peak, the Gixxer has it hand-down. In itself, HP and Torque values have little relevancy to laptime. The characteristics of the power pulse and the spread of the torque curve is where it's at. Having every up top is one sure formula for wheel-spin while another rider with half the engine sails past.
 

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logos1111 said:
cool to see . good find . neither bike seems that much off of advertized promises.
right. In a German magazine, they wrote, that the 1098 has the felt power of a good 999... :wtf:
 

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Some argue that the Ducati will pull better out of curves being that its power curve is above the Gixxers up to 9500rpm. However, all that is needed is 20% more gear reduction and the Gixxer will have more rear wheel torque at all speeds. And most important: it will still reach the same speed as the Ducati because it revs 2000rpm higher.

Example: If the Gixxer is geared 20% shorter than the Ducati both bikes will reach the same speed in that gear. Suppose both bikes are geared for 100 mph in one gear. At 50 mph the Ducati will rev 5000rpm and the Gixxer will rev 6000rpm. If we look at the torque graph the Ducati has about 68 lb-ft at 5000 rpm. The Gixxer on the other hand has about 69 lb-ft at 6000rpm. BUT, and here comes the big but, the Gixxer also has 20% more gear reduction meaning it puts out 69*1.2 = 82.8 lb-ft compared to the Ducati.

We can look at the torque output at 80 mph:
At 80 mph the Ducati will rev 8000 rpm, where it will produce 89 lb-ft of torque. The Gixxer will rev 9600rpm, where it produces 80 lb-ft of torque. But 20% more gear reduction gives it 80*1.2 = 96 lb-ft.

The torque advantage on the Duc is easily compensated by shorter gears on the Gixxer. The higher rev limit allows shorter gears while still being able to reach the same speed as the Ducati in every gear. You can put it this way: The higher revs on the Gixxer is a greater advantage than the higher torque on the Duc.

Snappo said:
Torque is where it's at!!! :smoking:
See above. :naughty:
 

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Fred00 said:
Some argue that the Ducati will pull better out of curves being that its power curve is above the Gixxers up to 9500rpm. However, all that is needed is 20% more gear reduction and the Gixxer will have more rear wheel torque at all speeds. And most important: it will still reach the same speed as the Ducati because it revs 2000rpm higher.

Example: If the Gixxer is geared 20% shorter than the Ducati both bikes will reach the same speed in that gear. Suppose both bikes are geared for 100 mph in one gear. At 50 mph the Ducati will rev 5000rpm and the Gixxer will rev 6000rpm. If we look at the torque graph the Ducati has about 68 lb-ft at 5000 rpm. The Gixxer on the other hand has about 69 lb-ft at 6000rpm. BUT, and here comes the big but, the Gixxer also has 20% more gear reduction meaning it puts out 69*1.2 = 82.8 lb-ft compared to the Ducati.

We can look at the torque output at 80 mph:
At 80 mph the Ducati will rev 8000 rpm, where it will produce 89 lb-ft of torque. The Gixxer will rev 9600rpm, where it produces 80 lb-ft of torque. But 20% more gear reduction gives it 80*1.2 = 96 lb-ft.

The torque advantage on the Duc is easily compensated by shorter gears on the Gixxer. The higher rev limit allows shorter gears while still being able to reach the same speed as the Ducati in every gear. You can put it this way: The higher revs on the Gixxer is a greater advantage than the higher torque on the Duc.


See above. :naughty:
That's all well and good on paper but you have to be able to ride it. If the gear reduction and higher revs result in wheelspin, you're cooked. I know SBK will have traction control, but remember that traction control reduces power to make the bike rideable.
 

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Is it fair to compare stock vs. modified -even if it's just a gear? If we also change the gearing on the 1098, that would level things off a bit.
 

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Koop said:
That's all well and good on paper but you have to be able to ride it. If the gear reduction and higher revs result in wheelspin, you're cooked. I know SBK will have traction control, but remember that traction control reduces power to make the bike rideable.
...:yo:

Fred00, while your point is well-taken, an argument based on gearing alone is an overly-simplistic approach to the issue. Things don't work in such linear fashion. Don't forget by shortening your overall gearing, you will compromise your 1st gear making it useless at the start and lower top speed on long straights such as Fontucky's banking. :)
 

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i know of a real good way to always solve the performance discussion .....lets line um up an race the wheels off of them. all the dyno charts in the world do matter a thing in traffic .
 

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i know of a real good way to always solve the performance discussion .....lets line um up an race the wheels off of them. all the dyno charts in the world do matter a thing in traffic .
 
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