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View Full Version : 749R (848R) vs. 600s



foggy123
04-20-2007, 03:13 PM
With 250 more CC's why are the Ducs slower than Yamaha, Suzuki and Kawa 600s?

http://www.superbikeplanet.com/2007/Apr/sp4/070420b.htm

router.exe
04-20-2007, 03:46 PM
is it the bike or the rider?

Bong
04-20-2007, 03:59 PM
I have a hunch its both the lack of funding compared to the the other factory teams...and the rider maybe?

kurtfriedrich
04-20-2007, 03:59 PM
Having owned a few cars with turbos (and one with a supercharger), my theory is the J-4's have ton's of highend HP at the expense of midrange. Great Sportbike riders on tracks know how to keep those babies up in the high end revs, just like race cars with turbo's.

But, go drive them on the street, and they suck. The average rider will be faster with a bike that has a strong midrange. Just like I'll take a stong V8 car over a turbo car. (My 3rd gen RX-7 had twin turbos, 260 hp, a small and big, so that the small one spun up fast, and that helped a lot - but I traded it on an M3 (flat 6) 240 HP, and on the roads, the M3 felt like it had more power most of the time, and was lots more fun to drive. But on a track, the Rx-7 would eat the M3's lunch.

Kurt

Il Marzocco
04-20-2007, 05:36 PM
How much did the Mazda weigh vs the BMW? Somehow I recall the 3d gen RX-7 being well under 3000 while the BMW is at about 3400. Aside from the acceleration differences the light weight would help with cornering and braking. So it might not be only the revs that make the RX-7 faster.

BTW, they both sound like fun. :happy44:

kurtfriedrich
04-20-2007, 09:07 PM
How much did the Mazda weigh vs the BMW? Somehow I recall the 3d gen RX-7 being well under 3000 while the BMW is at about 3400. Aside from the acceleration differences the light weight would help with cornering and braking. So it might not be only the revs that make the RX-7 faster.

BTW, they both sound like fun. :happy44:

definately, the lbs/hp was much better, and it would flick thru tight bends really nicely, but it requires some talent to keep the turbo's spinning.

Kurt