Masao Furusawa (Yamaha) Q&A

<div class='quotetop'>QUOTE (BarryMachine @ Aug 7 2008, 01:01 AM) <{POST_SNAPBACK}><div class='quotemain'>I know you don't read english Babel ..... but I think you need to find a better translator of those articles ......

Was it over 50 in IQ you claimed in that other tread? Are you really that thick that you take an article of Doohans career and a blogger that get his blog beaten to death in the comments section for his hopless fanboyism as proof for why a 4 stroke screamer have too much power?
<div class='quotetop'>QUOTE <div class='quotemain'>Mind you sometimes I think too much of the real articles are so easily ignored by the Rossifans as they do not fit the predetermined fairytale. ...... so who knows.
So blogs by fanboys are now real articles?
You have been linked to what is a real article regarding 4 stroke screamers and dissmis that one while the only real article YOU came up with was Doohans career.Lot's of relevant 4 stroke news there isn't it?
Who's the fanboy ignoring the facts here?
The fact is that you don't have the slightest idea about what you talk about. Nobody but you have ever claimed that the 4 stroke screamer are too powerfull to ride.
You're a joke Barry and very good at it.

<div class='quotetop'>QUOTE (BarryMachine @ Aug 7 2008, 01:27 AM) <{POST_SNAPBACK}><div class='quotemain'>I think in the end Rossi has set Yamaha a very hard task ..... to give him more power .... but with ease of use.

And I thought the article were about Furusawa and why Yamaha won't go for the screamer and not Rossi and his requirements. But then again, I'm the one who can't read English, right?

<div class='quotetop'>QUOTE (Babelfish @ Aug 7 2008, 05:37 PM) <{POST_SNAPBACK}><div class='quotemain'>And I thought the article were about Furusawa and why Yamaha won't go for the screamer and not Rossi and his requirements. But then again, I'm the one who can't read English, right?




Well yes! ...... and I don't think you realise it but this reaction is a prime example. You have to read each word, yes ..... plus you must assimilate the overall intent of an article ..... you are constantly misreading even what I say ..... therefore what chance for you understanding a long winded magazine article

no last word for you... i like ham

<div class='quotetop'>QUOTE (xx CURVE xx @ Aug 7 2008, 02:14 PM) <{POST_SNAPBACK}><div class='quotemain'>no last word for you... i like ham


me too

<div class='quotetop'>QUOTE (BarryMachine @ Aug 7 2008, 12:27 AM) <{POST_SNAPBACK}><div class='quotemain'>You posted comments based on Furusawa's article ....... Furusawa is historically opposed to Screamer config . ( we went through all that last year ) ..... his main reasons are balance and pulsing in the power train .... and the effect od these on the controllability for the rider ........well yes fine bit if you want power you have to get used too that ......... ( another anomaly ..... why do folk want the 990's back and yet accept big bang 800's? ..... seems "fruity to me ).

Yes Big bang is nicer power deliver ...... as would an electric shopping cart be ...... but when it comes to needing more power ..... they may need to trade off a bit of the smoothness Rossi requires. Maybe thats the whole problem? Rossi who can perform on a bike at a very pinacle of refinment, is up against a guy who seems to be revelling in the rawness of a bike. In which case it will come down to two opposing riders in two opposing tecnical camps going at it to see who wins ....... sounds like Motogp to me.


I think in the end Rossi has set Yamaha a very hard task ..... to give him more power .... but with ease of use.
My comments were my own, not based on the article.

AFAIK there is no significantly greater power delivery from the screamer configuration with the pneumatic valved inline 4. Furusawa's point was that any increase tends to be wiped out by the inability of the rider to feel what the tyre is doing. As Fursawa's area of expertise is harmonics I'd tend to feel that he probably has a pretty good handle on this.

Another Furusawa quote here from crash.net

<div class='quotetop'>QUOTE <div class='quotemain'>The rider needs to listen carefully to the tyre and talk to it directly with the throttle, but the screamer engine makes it really hard to 'hear'. So the connection between throttle and tyre is not good with the screamer.

So the screamer engine sounds nice, but if the engine goes over 12,000 rpm then there are problems and in MotoGP the useable rpm is 14,000 to 17,000 - sometimes up to 19,000 - so a big 'noise' is happening at high rpm with a screamer and the rider cannot 'talk' to the tyre.

The Ducati also revs higher than the other bikes in the field, largely due to the desmo system. This doubtless also provides more power, especially when you consider how upset Preziosi was with the mooted rev limit rule change (link)

As I said, despite Kawa being keen on the screamer, the end result is that they also have decided (at least so far) that the gains are not worth the losses and so the engine has not debuted in any race as yet. So the fact that Furusawa doesn't feel that the screamer is the way to go with the 4-strokes is so far backed up by all the manufacturers who do not use the desmo system. This may well be a red herring, but I do not have sufficient inside knowledge to determine whether this is the case or not.

I feel it unlikely that it's just that no other rider/team combo has the balls to try to develop the feeling in the right wrist (and the electronics to aid this) when even we can see that the desmo V-4 Ducati with Stoner on board is clearly making it work. IMO there most likely are engineering reasons. Furusawa is the only engineer from the other manufacturers who has spoken out, and to simply try to bring it down to Stoner liking a raw delivery and Rossi liking a finessed delivery sounds a little too simplistic to me.

In the 500 and 990 era, Rossi was reknowned (along with Capirossi, who was the only one to really get the best out of the 990 Duke until Gibbers came along in 2006, by which time the bike certainly appeared a lot less evil handling) for his throttle control. I doubt that he's suddenly lost it now that we have 800's.

I'm sure he's willing to adjust his riding style if the power delivery developed by Yamaha is less finessed providing it's sufficiently greater to be worth it. Look at the the efforts he and JB have made to get the most out of the Bridgestones.