Yamaha Lies to Customers

[Shaman]

http://www.motorcycledaily.com/01february06_redline.htm

Ooh.  Egg on face, foot in mouth, fingers crossed behind back.

Naughty Yamaha.

[Hornet]

That may be true "lies" but results on the race track do not lie!

I do agree that it is bad for customer PR   

[flash]

As far as I can tell, from reading the posts on r6messagenet, you need a race kitted ECU ($900US) to get the bike to actually go to 17,500rpm.
None of us will get to see that tach any way. We'll just get to hear the rev's as it goes buy us. I'm sure I'll get a good look at the taillights of one. 

[Shaman]

Haha... I don't think you or I have much to worry about that way.   

I also am interested in the track results - but since there aren't any yet, it'll be a while.

[flash]

Reports so far from the WSS team says that the new R6 is running the same times as last years bike and it's only at 50% of it's potential. They're (Yamaha Motor Germany) quite pleased as they haven't done any development on it yet. The riders( Parkes and Curtain) are commenting on how easy it is to ride and it seems to have more mid range than the '05.
It sounds like a fun bike.

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[Jimbo 197]

The answer i heard about that is the center of the crank is spinning at 17000+ but where the tach measures rpm is further from the center and therefore lower in rpm......thats the 'story' anyhow.....i'm not sure if that is technically correct or just pr spin.  It's not really shocking is it-- all the manufactures are "optomistic" when it comes to publishing horsepower, weight, top speed etc......why would this be any different? Besides horsepower usually peaks well before redline anyhow.....

[Shaman]

I have no doubt the new R6 is a wicked bike.  But I doubt it will live up to its unbeatable hype on the street.

But great.  Definitely groundbreaking.  Hat's off to Yamaha.

I just prefer the 675 Triumph.

[Hornet]

Comparing the 675 to the R6 is like apples to oranges

[Jimbo 197]

Comparing the 675 to the R6 is like apples to oranges

Or maybe apples to boat anchors.......

[flash]

Bottom line is what appeals to the customer. Unless your last name is Hayden, Hopkins, or Rossi, none of us mear mortals could possibly ride these bikes to the level where we would acutally notice a difference. Trying to compare todays modern sportbikes is really a wasted effort. But hey, that's what we do... I'll take a red one.

[Forseti]

The answer i heard about that is the center of the crank is spinning at 17000+ but where the tach measures rpm is further from the center and therefore lower in rpm......thats the 'story' anyhow.....i'm not sure if that is technically correct or just pr spin.  It's not really shocking is it-- all the manufactures are "optomistic" when it comes to publishing horsepower, weight, top speed etc......why would this be any different? Besides horsepower usually peaks well before redline anyhow.....

One would not expect that it would make any difference where on the crank the reading was taken as the rpm does not change with distance from center. However the speed of a specific spot will change. RPM is a measure of how many complete revolutions an item makes in a minute and not how far any item is actually moving.

[Jimbo 197]

One would not expect that it would make any difference where on the crank the reading was taken as the rpm does not change with distance from center. However the speed of a specific spot will change. RPM is a measure of how many complete revolutions an item makes in a minute and not how far any item is actually moving.

Actually the rpm does change with the distance from the center of the crank. Think about your sprockets -- how many complete rpm will your small front countershaft sprocket do compared to a larger sprocket on the wheel..... engine speed being the same but the number of revolutions each completes is different, same principal -- rpm changes with diameter. Bottom line is Big Blue was marketing first and engineering second and they got caught.

[Forseti]

Actually the rpm does change with the distance from the center of the crank. Think about your sprockets -- how many complete rpm will your small front countershaft sprocket do compared to a larger sprocket on the wheel..... engine speed being the same but the number of revolutions each completes is different, same principal -- rpm changes with diameter. Bottom line is Big Blue was marketing first and engineering second and they got caught.

I am sorry to disagree.. the comparison doesn't work. yes the larger sprocket spins slower, however that is the result of the fact that the external edge of the small sprocket is linked to the external edge of the larger one. So your not getting the same rpm as the external diameter makes it take a longer time to make the complete circle.
If the larger sprocket was attatched to the same shaft as the smaller sprocket it would turn at the same rpm as the smaller one. Yes it would push a chain farther as a result of the larger size but the rpm will be the same. As soon as you move it off to its own shaft and conect them with a chain you change the gear ratio thus the rpm changes. This is why if you wish to make a bike accelerate quicker you make the rear sprocket smaller but in the process the speed of the bike will be less at the same motor rpm.

Anyway... enough of that..   

[Forseti]

BTW.. no matter of the technical stuff they still screwed up. Makes you wonder if they really thought they would get away with inflating the spec's or if it was more "any publicity is good" train of thought....

[Jimbo 197]

Just read that Yamaha in the usa is offering a full refund to anyone who bought a r6 and is feeling cheated. Don't think it'll come to that here cuz i don't think they have been shipped to the dealers yet. Wonder if there will be a bunch of "demos" available for sale at a discounted price down there.....