View Full Version : Cool video explaining the cross plain crankshaft in the new R1.
http://www.youtube.com/watch?v=V_e_gC99Ql0
Captain Morgan
09-10-2008, 10:10 PM
Fucking sweet. Maybe I'll be able to afford an R6 by the time this filters down.
Fucking sweet. Maybe I'll be able to afford an R6 by the time this filters down.
That's what I'm saying.
Because of this major redesign, I'd be a lot more skeptical to by the intro year's model. I wonder how much of a difference it makes though. I wonder who's gonna give us the first review. There goes Yamaha, breaking the barriers again.
PiZdETS
09-11-2008, 12:19 AM
Seems like such a simple solution but it's genius. Rossi pioneered it in his first few years on the M1. Slightly less total engine performance but the feel and grip is hugely improved.
It's factory so it will be used in factory racing series next year, might be a real advantage.
link. (http://www.crash.net/motorsport/motogp/news/168808-0/motogp_stars_launch_%27big_bang%27_r1.html)
Significantly, the new R1 features a 'big bang' engine design, as used in Yamaha's YZR-M1 MotoGP machine since 2004.
"This is a great bike, it's very like my M1 and it's exciting to see so many MotoGP qualities now appearing on a bike for the road," said Rossi, currently on target to win his first MotoGP title since 2005 and his sixth in total. "I think everyone who loves the R1 and Yamaha will be very excited about this new version, it's fantastic!"
Total engine torque is a combination of combustion torque, produced when a cylinder is fired, and inertia torque, produced by the rotation of the crankshaft. Of the two, only combustion torque is controlled directly by the rider, via the throttle.
'Big bang' engines improve rider feel by reducing the effects of inertia torque, but they are also more complex and reduce ultimate engine performance slightly compared with a conventional even-firing design.
During winter MotoGP testing, Masao Furusawa, Yamaha's general manager of Engineering Operations, told Crash.net that the company will 'never' use an even-firing engine in MotoGP again.
'Big bang' engines have not been used in World Superbike due to a rule which states that "the sequence in which the cylinders are fired (i.e. 1-2-4-3) must remain as originally designed on the homologated model".
Since the 2009 R1 features 'big bang' as standard, Yamaha will thus be able to use the technology in WSBK next season.
JoJoYZF
09-11-2008, 12:27 AM
This bike just got a lot more appealing. Any ideas when its hitting dealers yet?
PiZdETS
09-11-2008, 02:39 AM
official launch video with Colin Edwards commentary
http://www.youtube.com/watch?v=Gj8pwSE77CM
I came.
This bike just got a lot more appealing. Any ideas when its hitting dealers yet?
January '09. It does sound very appealing. Watch how many copy 'em now.
Dnyce
09-11-2008, 06:53 AM
if it eats every bike up, i see honda 1st, then kawi and suz, since they usually make more power anyway, so they mite hold off just a bit longer
every1 copys evry1 tho. yammi has suzis adjustable map switch now
marko138
09-11-2008, 08:23 AM
I shut this vid down about 45 seconds in. I was bored with it.
I shut this vid down about 45 seconds in. I was bored with it.
It states that the new R1 is better than any Buell with ever be.
Got 'em!
NeonspeedRT
09-11-2008, 08:31 AM
This bike just got a lot more appealing. Any ideas when its hitting dealers yet?
It's awseome technology. But is the "average" street rider even going to notice or be able to take advantage of it? I would say 85% of the riders out there on any liter bike don't use the bike to near it's full potential.
Rider
09-11-2008, 08:32 AM
It states that the new R1 is better than any Buell with ever be.
Got 'em!
Shit for a company that made a bike like this it's no surprise.
It's awseome technology. But is the "average" street rider even going to notice or be able to take advantage of it? I would say 85% of the riders out there on any liter bike don't use the bike to near it's full potential.
Supposedly there has always been an issue with the R1's midrange. Maybe it'll be a noticeable difference.
Shit for a company that made a bike like this it's no surprise.
WTF...Hahahahahaha.
NeonspeedRT
09-11-2008, 08:35 AM
Supposedly there has always been an issue with the R1's midrange. Maybe it'll be a noticeable difference.
Possible. With the regular R1 though, the midrange issue is easy enough to work around. Add a good air filter, power commander, and velocity stacks, and that helps quite abit with the midrange.
marko138
09-11-2008, 08:38 AM
Shit, you guys are funny motherfuckers.
Rider
09-11-2008, 08:40 AM
Shit, you guys are funny motherfuckers.
I've had that pic for a while, just waiting for a chance to bust it out. :lol:
Possible. With the regular R1 though, the midrange issue is easy enough to work around. Add a good air filter, power commander, and velocity stacks, and that helps quite abit with the midrange.
Or redesign the crank, haha.
couldnt do stacks after lik 05 cause of the ycc-i system. Id also like to point out that this isint the first big bang bike to market as the rsv mille has had that distinction for a while. Anyway it'll be interesting to see what zuk does now. If its a gsv-r 1000 i might consider switching to the darkside lol
Also, with all the big bang talk going on i suppose its worth mentioning that kawi is leaning towards a return to even firing orders testing their zx-rr with a ''screamer'' engine sacrificing some tractability for all out power could be advantage with the 800cc restriction
Rider
09-11-2008, 11:44 AM
Also, with all the big bang talk going on i suppose its worth mentioning that kawi is leaning towards a return to even firing orders testing their zx-rr with a ''screamer'' engine sacrificing some tractability for all out power could be advantage with the 800cc restriction
HP and torque has never been a problem for Kawi, it's being able to use it.
No Worries
09-13-2008, 06:20 PM
That's what I'm saying.
Because of this major redesign, I'd be a lot more skeptical to by the intro year's model. I wonder how much of a difference it makes though. I wonder who's gonna give us the first review. There goes Yamaha, breaking the barriers again.
Buick had an odd-fire V6 in 1975.
Supposedly there has always been an issue with the R1's midrange. Maybe it'll be a noticeable difference.
The early R1's, with the long-stroke engine, had no problem with low and mid-range torque. Not until the Gixxer 1000 came out in 2001 did anyone beat it. Even in 2002, it beat the Honda, Kawi, and Suzuki liter bikes up to 5K, where the GSXR1000 surged ahead. I would buy a 1998 R1 (if I could find one in good condition) and mod the suspension and handlebar, before I'd buy a new R1. Plus, the 98 looks way nicer.
Buick had an odd-fire V6 in 1975.
The early R1's, with the long-stroke engine, had no problem with low and mid-range torque. Not until the Gixxer 1000 came out in 2001 did anyone beat it. Even in 2002, it beat the Honda, Kawi, and Suzuki liter bikes up to 5K, where the GSXR1000 surged ahead. I would buy a 1998 R1 (if I could find one in good condition) and mod the suspension and handlebar, before I'd buy a new R1. Plus, the 98 looks way nicer.
If money wasn't an option, you'd still buy the '98? You're fucking crazy.
a better explanation is that the big bang motor pairs firing pulses so the rear tire gets a teeny tiny break while a standard screamer hammers it constantly.
a better explanation is that the big bang motor pairs firing pulses so the rear tire gets a teeny tiny break while a standard screamer hammers it constantly.
I wonder why Yamaha didn't put that in their release then? "Basically, it gives the rear tire a teeny, tiny break."
I wonder why Yamaha didn't put that in their release then? "Basically, it gives the rear tire a teeny, tiny break."
they also could have said "hey its half a v8 now!"
point is, a tire can only give 100% of traction at a time. be it in accel, side, or braking. a reduction in the affect of acceleration on traction would make for a slight advantage and explaining it like that would be admiting its not gonna do much for us everyday joes except cut some potential top end :dthumb: kinda smart move on their part saying it like this.
im rather curious how they got past the requirement for heavy balancing inherent in the crossplane design and also if it will rev at a similar speed to its screamer rivals
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