Well Yamaha's new 450 is due out in a couple months, if it's anything like their 426, it will be a screamer!! I finally found a stock 4 stroke that spanked my C'dale, and it's even smaller!! Rode last night with Johnny Hale, he just built a new 426 that he put in his Laeger chassis practice quad, man, what a quad!! He's been having major difficulties finishing moto's, loosing water and seizing motors trying to keep up with Farr and everyone else who has long since switched to the thumpers. I guarantee you now he's got something that will compete, he was smiling ear to ear last night. What a motor that 426 is!! If in fact Cannondale is developing a 450 that can rev like the 426 (14,500 RPM), I'm trading for it!![img]i/expressions/face-icon-small-happy.gif[/img]

 

If cannondale replaces the motor with a 450 in a cannibal and not just a moto, my dale is as good as gone.

 

Brian, the 426 is not capable of turning 14,500 RPM, it's rev-limiter actually kicks in lower than the Cannondale, at 11,300 RPM.

The YZ250F is capable of about 13,500 RPM before the limiter kicks in.

Maximum RPM is a function of piston speed mostly, the YZF and CD share almost the same stroke length, giving them nearly the same upper RPM limit.

The new Suzuki has a 62.6mm Stroke - giving it a little less upper RPM rev limit, but a tad more torque down low. It will still never have the bottom end a Raptor, DS650, or 400EX does though.

 

I would like to comment on the z400 not having more bottom end then the 400. Thats bull. the other day I dragged 2 400ex's both with pipes, air filter,and rejetted. one with 18 tamers and one stock tires. I pulled off the line from them and beat them by 1 1/2-2 bike lengths, they never moved- except backwards.

 

do you ahve a cannibal or a Z400? or both, if so lucky you!

 

I have a cannibal my brother(suzukiboom) has a z400. I dont know how you guys can figure the Honda has bottom-end at all with the air cooled single cam engine. The z400 has more bottom end that the honda could only wish to have, and the cannibal has way too much bottom for either machine.

 

MXracer, I doubt the 450 would go in the Cannibal, it is their "entry level" quad, so it needs to be a little more tame than the rest. Too bad they wouldn't give an option of a true 440, or a big bore. Man, could you imagine a 650 C-Dale?

 

I never said the 400EX had more bottom end, I agree with you fully. The Z HAS to have more bottom end it has dual cams and more HP to boot.

 

In drag racing you *NEVER* use the bottom end. If you do, you don't know how to race.

To compare bottom ends, take both quads into a corner a gear high, see which one pulls out better.

My 400EX will come out of a corner from an idle in a one wheel wheelie, if I took my CD to 1200 RPM and hammered on the throttle, I would be hitting the start button.

Facts are facts, you can't get an 11,000 RPM engine that develops good bottom end, period. Physics are against you.

 

Never mind, guys... I've seen enough now to know that I've got a lot more explaining to do than I really want to tackle.