[Pierre Col]

http://video.google.fr/videoplay?doc...38601768721160

Hey guys, post the chart please!

[Driz]

170 Bhp...

my vespa has that...

+1 on a dyno sheet!

[wjn]

This is the one which is tuned (see my other post). After tuning they make an other run and than post the result/difference.

I spoke to him last thursday, he thinks the bike will get about 190hp at the wheel.

[dagor6]

do you know what kind of "tuning" they did? Sorry if the question has been asked elsewhere.

[wjn]

Originally Posted by dagor6

do you know what kind of "tuning" they did? Sorry if the question has been asked elsewhere.

See pictures on: http://www.ducatispot.com/forums/showthread.php?t=5158

[dagor6]

It looks like they just ported it?

Any other changes made? Increased compression?

[dagor6]

Originally Posted by Driz

170 Bhp...

my vespa has that...

+1 on a dyno sheet!

Whoa. I just watched the video again. The last words the guy says are "170 brake horsepower".

I assume his english is confused, because if it really made 170 hp at the crank, that'd be pretty sad.

Even 170 at the wheel is sad for all that hype....

[Crimson Guard]

If it's 170 at the wheel, that's a 15% loss from 200hp.

[desmohardpipi]

170 is just a number. Do a little research on dynos and how they measure hp (torque really, but you get the idea). Some attempt to estimate crank hp, others try to measure wheel hp. Some measure the bike's ability to accelerate a known load, others make static measurements of engine power at various rpms. The one in this example can do both (I think, that was my take on what I read about it), so we really don't know what they did. Dyno numbers are fucking useless. Almost as useless as drag races. Drag races have one thing over dynos though: take the weight of the bike/rider and the top speed and you will have concrete proof of what the engine is capable of. The dyno just spits out some random builshit number based on some arbitrary, proprietary, excretory algorithm the dyno mfg. cooked up over a few beers late one night in the shop. What else explains the huge variation in readings among dynos?

[Armoredsquid]

Originally Posted by desmohardpipi

170 is just a number. Do a little research on dynos and how they measure hp (torque really, but you get the idea). Some attempt to estimate crank hp, others try to measure wheel hp. Some measure the bike's ability to accelerate a known load, others make static measurements of engine power at various rpms. The one in this example can do both (I think, that was my take on what I read about it), so we really don't know what they did. Dyno numbers are fucking useless. Almost as useless as drag races. Drag races have one thing over dynos though: take the weight of the bike/rider and the top speed and you will have concrete proof of what the engine is capable of. The dyno just spits out some random builshit number based on some arbitrary, proprietary, excretory algorithm the dyno mfg. cooked up over a few beers late one night in the shop. What else explains the huge variation in readings among dynos?

You're right, 170 is just a number and doesn't mean beans, but when Ducati's site claims 200 (with race exhaust) for the flagship, rockpornstar, big Godzilla eating RR, someone definitely took a shit at the wrong time and place. Can you hear the other liter bike owners laughing "a 15 minute call to my (GSXR, 1000RR, ZX-10R, R1) saved me a gazillion Lira." Plus or minus a few hp on different dynos , diff temp, humidity, etc is what most of us know anecdotaly and can reasonably accept, but 30 hp (15%) falls slightly outside of the "huge" variations we see in different dynos with different variables. I know dynos have some variation, but if dyno's had a statistical variation of 15% then DIN, SAE, and everyone else would be out of jobs. Or at the very least the dynometer operators at Ducati.

Wait til the RR's start stalling.