View Full Version : Doohan discovers the Dodge Tomahawk..
chris
10-14-2004, 06:16 AM
http://www.f1journal.com/f1_portraet/prt_fh_030801b.html
That's a selection of stuff from the Goodwood festival of speed from last year. Did Doohan actually ride that beast of a 10 cylinder motorcycle-like thing?
Amazing as the Tomahawk is, I'd love that Honda NR750 he had. :) Real motorbike exotica that bike is! Powered by a 32 valve V4 engine (not a typo, indeed 8 valves per cylinder) with oval pistons, the NR750 is a engineering marvel. It could do 15,000rpm, and some versions had 145hp.
200 NR 750 related patents were filed by Honda, and 4 speed records were smashed by that extroadinary bike.
monaro
10-14-2004, 06:23 AM
pretty ballsy if he did. whats the power to weight ratio? does it beat the donut king jet engine powered van?
blackice111288
10-14-2004, 02:13 PM
[QUOTE=monaro]pretty ballsy if he did.QUOTE]
i'll say. i wonder how he even got a hold to one. i was watching this once and some one had a classic 1970's Toyota Celica rally racer, and they were drifting around the course. i thiught it was pretty cool.
chris, wouldn't 8 valves per cyl be less efficient than a standard 4 per cyl? more metal to be moved by the engine.....
chris
10-14-2004, 05:17 PM
The NR500 did 20,000rpm, so it must be pretty damn good, since friction is usually the enemy of high RPM operation.
I believe the Tomahawk is supposed to be good for a top speed of 640km/hr -if any rider is silly enough to attempt it..
Yeah, well the only major weight IS the engine, but that's alloy now too.
BUt 8 Valves a cylinder have been done by bikes before, it is more effiecent then 4 because you can get more air out of multiple holes then you can out of one or two, much like why DOHC is better then a OHC hemi head.
Or why a 16 sylinder 1.5 f1 car can make more power when supercharged then any other motor.
chris
10-15-2004, 10:35 PM
Yeah, well the only major weight IS the engine, but that's alloy now too.
BUt 8 Valves a cylinder have been done by bikes before, it is more effiecent then 4 because you can get more air out of multiple holes then you can out of one or two, much like why DOHC is better then a OHC hemi head.
Or why a 16 sylinder 1.5 f1 car can make more power when supercharged then any other motor.
I was rather wondering how the Dodge turns.. :eek: A normal bike no problem, but this thing.. :eek:
it leans I beleive, or has some sort of 2 wheel steering just like it has 2wd.
blackice111288
10-22-2004, 03:39 PM
???i dunno, dont ask me, you'd think it would flip, cause the tires dont seem like they have any contour to the bottom of the tires.
[MC]HMD
10-26-2004, 02:04 PM
The Tomahawk is nice but I would take a Y2K over that anyday. You can actually lean the Y2K, and it's a freaking F-14 Tomcat on two wheels.
blackice111288
10-28-2004, 03:13 PM
i'll take a turbo GSX R 1000 with a beefier swingarm extend 3 0r 4 inches, thank you!! :racer:
I'll have a nice Ducati for a road bike, or a YZ450F for Motard racing, I like yamaha's but Ducati's more.
blackice111288
10-30-2004, 09:09 PM
999's are cool, but i think yama's YZF's are cool to. the new ninjas are tight also. im just in love with the GSX-R's
chris
10-30-2004, 09:19 PM
The YZF-R1 and R6 are both very nice.
I also like the Honda Fireblade.
blackice111288
10-31-2004, 02:17 PM
are any of you guys into Super Moto?