Cars vs Bikes #64,001

[Gremlin]

Really?

I get more worried by Nissan Bluebirds with taxi signs on them... that or bus drivers...

bus drivers stop at the lights?!?!?!? dang... the intersection must be blocked by cars then.

What worries me is when I'm dumb enough to stop right on a white line when its wet... that worries me

[number33]

Dunno where the figure comes from but the Car owes him over $85k. Gear box alone is worth more than my bike. He reckons it'll do a sub 11sec 1/4 mile when its finished. Seems like alot of money when you could get a faster bike for under 1/4 of that.
Boys and their toys I guess.

That car owner must live in a mansion overlooking the sea as thats the trendy thing but yeah you can get 10sec 1/4 bikes for 1/10th of that $85000.00

[number33]

Even 1/20th.

[N4CR]

Blackyoshi had an r33 godzilla with around 400+hp (4wd remember) or so that could give a fair amount of bikes a run for thier money.. last time I saw it was chasing a gixxer thou down a straight.. didn't get its arse handed to it much at all suprisingly.

But remember.. these are stock bikes guys. Mod a bike eg turbo bus/thou etc and you will be pretty much untouchable in a line by anything road legal with 4 wheels. Not including a somehow road legal jetcar

[onearmedbandit]

Turbo'ed thou's have difficulty below 200km/h putting the power down though. Roll on from 120 might be different, but I'd be putting my money on a modified GTR against a turbo'ed bike from the lights.

[N4CR]

Turbo'ed thou's have difficulty below 200km/h putting the power down though. Roll on from 120 might be different, but I'd be putting my money on a modified GTR against a turbo'ed bike from the lights.

Yeap very true, most serious drags cars vs bikes end up that way with the bike fucking off after 40m or so, but an extended swing arm busa.. :P Hehehe.

There is always something faster than whatever really.. seen a nos viper turbo go past a busa big time at around the 280 mark, but the bus got the viper off the line and all the way there by a big margin. Around then is where the drag coefficient of the bike comes into play and they slow down. (0.70ish vs 0.2-.3 for cars) If cars had same power/weight we'd be fucked without streamlined full cocoon shells and stuff.. I was thinking a movable high speed fairing would be pretty awesome - cocoons you at 200+. Just don't stack.

[texmo]

There was a 800+hp evo at up the road today, Yes dyno proven and it lost traction at about 60km/hr when it hit boost...

[onearmedbandit]

Yeap very true, most serious drags cars vs bikes end up that way with the bike fucking off after 40m or so, but an extended swing arm busa.. :P Hehehe.

Hell yeah, now that would be worth seeing!

There is always something faster than whatever really.. seen a nos viper turbo go past a busa big time at around the 280 mark, but the bus got the viper off the line and all the way there by a big margin. Around then is where the drag coefficient of the bike comes into play and they slow down. (0.70ish vs 0.2-.3 for cars) ...

Good, someone else who knows about poor aerodynamics of bikes. I have seen similar numbers for bikes, the rider fucks up a lot of it as well. Anyone ever wondered why in motorcycling we get every measurement, power, torque, weight, braking distance, disc size, acceleration, top speed, etc from the manufacturers but not the drag coefficient?

[Gremlin]

Anyone ever wondered why in motorcycling we get every measurement, power, torque, weight, braking distance, disc size, acceleration, top speed, etc from the manufacturers but not the drag coefficient?

well, a bike is ok-ish, until you stick the rider on top.

And what co-eff figure would you give?? A nicksta or someone else extremely small and light...

or a weasel co-eff??

[N4CR]

well, a bike is ok-ish, until you stick the rider on top.

And what co-eff figure would you give?? A nicksta or someone else extremely small and light...

or a weasel co-eff??

Okay time to get geeky. The airflow around a bike is pretty much going to be delaminar once it gets away from front bubble and fairings. So in order to overcome that you need a perfect fit for the rider and smooth skin to encase the rider in. If it is not a perfect teardrop or something similar with streamlining encasing the rider it is going to get alot of drag occuring at high speeds where the air suddenly breaks away from a surface. Profile, parasite and form drag from memory.

Weasel (if he were more sluglike and filled all the gaps AND NOT PROTRUDING out of fairings .. sorta does anyway) would be better depending on initial bike size actually. Nicksta would create a large flat surface where she does not occupy space and the airflow would get very very messed up.

But in reality this is the opposite.... as mouldable Weasel is, he ain't a perfect aerodynamic slug shape so nicksta gets the win by simply using the bikes aero to max affect.

High speed, automatically moving fairings like I suggested before would do the trick, too bad noone has ever designed a bike or a system like that as far as I know... mabey one day I'll pay some monkeys

I'll explain this better to you at another time.. need some drawings actually.

[SlashWylde]

Dunno where the figure comes from but the Car owes him over $85k...He reckons it'll do a sub 11sec 1/4 mile when its finished.

Wow... $85k for 11sec 1/4 mile. That's...'impressive'...

By contrast a CBRR600RR for around $15k will do a 10.5sec 1/4 mile straight out of the box.

Hell of a lot more exciting ride too I'll wager.

[texmo]

I bet over half the people in this thread couldnt do a 10sec 1/4 on a cbr600rr

[Lou Girardin]

Turbo'ed thou's have difficulty below 200km/h putting the power down though. Roll on from 120 might be different, but I'd be putting my money on a modified GTR against a turbo'ed bike from the lights.

Never. Not even a stock litre bike. There's perhaps a couple of cars that can get close to 3 secs 0 - 100, GTR's are too heavy for that initial lunge.
Even when Top Gear put some super light track day car against a CBR600, the Honda ate it over the initial 100 metres.

[Lou Girardin]

Hell yeah, now that would be worth seeing!




Good, someone else who knows about poor aerodynamics of bikes. I have seen similar numbers for bikes, the rider fucks up a lot of it as well. Anyone ever wondered why in motorcycling we get every measurement, power, torque, weight, braking distance, disc size, acceleration, top speed, etc from the manufacturers but not the drag coefficient?

Because the rider is the biggest factor.

[onearmedbandit]

Never. Not even a stock litre bike. There's perhaps a couple of cars that can get close to 3 secs 0 - 100, GTR's are too heavy for that initial lunge.
Even when Top Gear put some super light track day car against a CBR600, the Honda ate it over the initial 100 metres.

So a modified GTR that is capable of 10.2 1/4's on road legal tyres wouldn't beat a turbo'ed GSXR1000 off of the line? I don't think so Tim. You try (not that I have) launching a std wheelbase BIG power sportsbike hard from a standstill. I'd guess you'd be fighting wheelspin and wheelies too much to be able to beat a 4wd 10sec car.