This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Rossi to test Ducati at Valencia

Thats good news, and very fair of Yamaha.
<
 
Well at the moment Lorenzo is the one with the target on his back as all the reigning champions do.



Yamaha have lost a fortune in revenue the last year or so & are now losing the biggest selling piont & creator of revenue in the paddock, so the last thing they need is to have a target firmly stuck on their backs br lots of fans & Rossi, Burgess & Ducati.



On the news that they are readying a screamer & a big bang motor for the bike at Valencia - Hmmm Rossi on a screamer
<
 
johnnyvvc said:
Well at the moment Lorenzo is the one with the target on his back as all the reigning champions do.



Yamaha have lost a fortune in revenue the last year or so & are now losing the biggest selling piont & creator of revenue in the paddock, so the last thing they need is to have a target firmly stuck on their backs br lots of fans & Rossi, Burgess & Ducati.



On the news that they are readying a screamer & a big bang motor for the bike at Valencia - Hmmm Rossi on a screamer
<
Click to expand...



Interesting if Rossi does go screamer, I thought in his early 4 stroke career he hated it. Indeed after years of Doohan on screamer it was odd to see Rossi go back to big bang.



This years Valancia test are going to be so interesting I reckon they should cover it like a round of GP
<
<
 
BarryMachine said:
Interesting if Rossi does go screamer, I thought in his early 4 stroke career he hated it. Indeed after years of Doohan on screamer it was odd to see Rossi go back to big bang.



This years Valancia test are going to be so interesting I reckon they should cover it like a round of GP
<
<
Click to expand...

I agree the valencia test is likely to be more interesting than the last 2 races; from my point of view both stoner's pace on the current honda and rossi's on the current ducati will be fascinating, presuming honda give casey an "a" spec bike which I imagine they will given his recent form and dani's continuing fragility.



The screamer aspect is puzzling to me; it has been argued fairly convincingly I thought that the screamer was redundant given the current rev limits, unless dorna/the manufacturers have changed their mind again on this. If the rule is staying the same, I don't understand why they didn't give stoner a screamer engine this year. I do continue to suspect that stoner to honda was a done deal before the start of this season.
 
So, Yamaha waited to have the manufacturers title sealed before giving Rossi the green light.
<


Surely Stoner on a new bike will be faster than Valentino on a new bike, the first time out. It's Stoner characteristic to be fast out of the box.

I don't think Ducati may go back to screamer with the 800 -- rather with the 1000 in 2012, if the 21 liter limit is maintained, because screamer is more fuel-efficient. Assuming they can have that faithful and gradual wrist-delivery connection Valentino always wants.
 
michaelm said:
I thought that the screamer was redundant given the current rev limits, unless dorna/the manufacturers have changed their mind again on this.
Click to expand...



Can't be anything to do with rev limits, otherwise they could much more easily have limitted the revs electronically.



The introduction to big bang was usually to give a more "rideable" power characteristic, ie. screamer config. has a pretty vicious snap to it towrds the higher end of the rev range. The big Bang allows more control in the corners ..... thats what Ducati had said they needed.
 
BarryMachine said:
Can't be anything to do with rev limits, otherwise they could much more easily have limitted the revs electronically.



The introduction to big bang was usually to give a more "rideable" power characteristic, ie. screamer config. has a pretty vicious snap to it towrds the higher end of the rev range. The big Bang allows more control in the corners ..... thats what Ducati had said they needed.
Click to expand...

I meant the necessity to limit the revs for engine longevity under the current engine rule. It is possible that ducati have found a way to make a screamer engine durable, they have always been good at building engines. Perhaps dorna and the manufacturers have realised the engine rule was stupid and made things more expensive rather than less, and would probably have to have been waived for the other teams had they run out of engines as was apparently the case for suzuki.
 
michaelm said:
I meant the necessity to limit the revs for engine longevity under the current engine rule. It is possible that ducati have found a way to make a screamer engine durable, they have always been good at building engines.
Click to expand...



Makes no logical sense really when youcan still limit it electronically.
 
BarryMachine said:
Interesting if Rossi does go screamer, I thought in his early 4 stroke career he hated it. Indeed after years of Doohan on screamer it was odd to see Rossi go back to big bang.



This years Valancia test are going to be so interesting I reckon they should cover it like a round of GP
<
<
Click to expand...

Hi,



Would someone please explain the relative advantages/ disadvantages of screamer vs big bag and in particular how this may apply to Rossi or Stoner
 
ptk50 said:
Hi,



Would someone please explain the relative advantages/ disadvantages of screamer vs big bag and in particular how this may apply to Rossi or Stoner
Click to expand...



Big Bang produces a flatter torque curve, theoretically allowing more predictable control throughout the rev range ..... bit of a wild ride just off idle ( well compared to a screamer ) ...... but there are also arguably negatives with it as well ..... eg.pulsing of the power as the rev's drop may be more wearing on the drive train and tyres.



Screamers give an increasing torque curve and peak at hogher revs and power ...... bit of a wilder ride when you get it to higher revs.
<




Read this:

http://en.wikipedia.org/wiki/Honda_NSR500

( the 90 -98 years and the 99-2000 )





How it applies to Stoner and Rossi:



Stoner won on a screamer
 
I think Ducati has a sreamer(or more screamer-like)engine lined up simply because it has more power at the top.

As said,maybe they have found a way to make that engine last as long as the big bang-like engine they're using now.



Going from what Rossi has prefered before,even on the R1 superbike i think he will go with the with better initial throttle respons and choose the big bang direction....and then ask for more power at the top as the season progresses.Not that he will need to though.Ducati will probarbly try pretty hard anyway.
<
 
Anyway, it is already well known that Ducati will make Rossi test both the screamer and the big bang at Valencia. That is the very first choice to make.

Imo, a screamer is both more durable and more fuel efficient than a big bang, as it is an engine with an optimal internal balance. Less tractable maybe... that's a human interface problem
<
 
In a way i think that Rossi will go with the big bang judging by moving from the standard inline 4 to big bang crankshaft in the M1 when he got hold of it, or more Burgess did.



Thing is if Rossi gells with the screamer i think we will be in for a very boring year as i cant see anyone getting near him -



Fast as hell

Good on warn tyres & dodgy weather

Ruthless in passing people



He will be collossal & that my freinds will mean a b oring years worth of racing.



Thing is im not convinced even Rossi will be able to run with it as Capirossi, Melandri & Hayden certainly couldnt & they are some of the top guys defo not mugs!
 
johnnyvvc said:
In a way i think that Rossi will go with the big bang judging by moving from the standard inline 4 to big bang crankshaft in the M1 when he got hold of it, or more Burgess did.



Thing is if Rossi gells with the screamer i think we will be in for a very boring year as i cant see anyone getting near him -



Fast as hell

Good on warn tyres & dodgy weather

Ruthless in passing people
Click to expand...



Would be interesting to see Rossi on a bike with a power advantage and his and JB's setup skills. Could end up boring for sure, but I can't see how they can make the screamer last long enough. The power advantage arrive at top rpm and I doubt they can deliver that and make the engine last.
 
BarryMachine said:
Makes no logical sense really when youcan still limit it electronically.
Click to expand...

As you know I am no engineer, but my understanding was that the advantage of the screamer came at higher revs which could not be used under the 6 engine rule due to durability problems. There certainly was a move from the other manufacturers to limit the revs formally after 2007 when ducati looked to have an engine advantage, although this was also reputedly partly due to the mechanical efficiency of the desmo valve system particularly with the fuel limit.
 
michaelm said:
As you know I am no engineer, but my understanding was that the advantage of the screamer came at higher revs which could not be used due under the 6 engine rule due to durability problems. There certainly was a move from the other manufacturers to limit the revs formally after 2007 when ducati looked to have an engine advantage, although this was also reputedly partly due to the mechanical efficiency of the desmo valve system particularly with the fuel limit.
Click to expand...

That was also my understanding why ducati switched to big bang. Honda also limited there customer bike revs 1000rpm lower than the factory bikes because of this rule.
<
 

Similar threads

#22
Rossi: Ducati want me to test their 2023 bike
Replies
2
Views
420
#22
#22
#22
David Emmet: A peek into the soul of Marc Marquez
Replies
20
Views
2K
#22
#22
Barbedwirebikerr
Valencia Test
Replies
134
Views
20K
povol
povol
Holypuck
Qatar test
Replies
192
Views
21K
Theo
Theo
moto vudu
Yamaha: Why Lorenzo won't test twice for Ducati
Replies
214
Views
29K
michaelm
M

Recent Discussions