worlds fastest street legal motorcycle--350mph busa powered missle

[raceman]

 this thing is just too wicked for words,coast to coast in one day!
http://www.thebikergene.com/custom-bikes/bugatti-veyron-forced-to-eat-acabion-gtbos-dust/#more-37

[ironhead]

I don't believe those speeds have been verified right? It's easy to say that it's capable but on paper and actually pulling that off are 2 very different things. Pretty neat though. I would like to see the results of someone running one on the salt.

[raceman]

l doubt we`ll see one run on salt but you never know. Regarding the claims of speed l believe road testing has been done to the extent that it`s potential is verified. number crunching and wind tunnel work is high science with a bit of the black arts thrown in but we all know aero drag is what utimately limits top speed in high horsepower vehicles. This land missle has what it takes to slice the air so efficiently that nothing else even comes close,can you just imagine CRUISING at 250mph ? and having another 100mph potential left? damn,l want one

[SPEED KING]

l doubt we`ll see one run on salt but you never know. Regarding the claims of speed l believe road testing has been done to the extent that it`s potential is verified. number crunching and wind tunnel work is high science with a bit of the black arts thrown in but we all know aero drag is what utimately limits top speed in high horsepower vehicles. This land missle has what it takes to slice the air so efficiently that nothing else even comes close,can you just imagine CRUISING at 250mph ? and having another 100mph potential left? damn,l want one

He should race the Dodge Tomahawk....

[YAG]

I want to know how they justify the price.

[TURBO KING]

I second Yag.

[kickstart]

Hi

Quick bit of working out. It would require 328 lbs of thrust with a cda figure of 1 to do 350mph (and for comparison a stock busa has a cda figure of about 3.37). This is using a figure of 0.0801 for the density of air (will be quite a bit lower at high altitude and high temperature, hence at Bonneville and the like you need less power to do the same speed, but these same factors will also reduce the likely power the engine is producing). That cda figure might be achieveable, and assuming the same frontal area as a 'busa that would mean a cd figure of 0.16, compared to maybe 0.1 for a full on streamliner.

Looks like it is using a 17" wheel, and claimed peak power is 354hp @9300rpm, so 200 ft lbs of torque at that rpm. If we assume max speed is at those revs and assume a 190/50 17 rear tyre then we can calculate the gearing. At 342mph the rear tyre needs to turn at 4695 rpm, giving the overall gearing as 1.98 (compared to 3.919 for a stock busa, which is a lot slower but producing power at higher rpm).

From that as thrust at the rear wheel is torque * gearing / driving radius (in feet) we can work out that thrust = 200 * 1.98 / 1.02. So the bike is producing 388 lbs of thrust at 342mph.

Means there figures do work out if the shape is VERY slippery.

All the best

Keith

[rustman]

l doubt we`ll see one run on salt but you never know. Regarding the claims of speed l believe road testing has been done to the extent that it`s potential is verified. number crunching and wind tunnel work is high science with a bit of the black arts thrown in but we all know aero drag is what utimately limits top speed in high horsepower vehicles. This land missle has what it takes to slice the air so efficiently that nothing else even comes close,can you just imagine CRUISING at 250mph ? and having another 100mph potential left? damn,l want one

He should race the Dodge Tomahawk....

I was going to say the same thing.  That pig never lived up to the hype (did it?)   Still a neat looking toy, although overpriced by a factor of AT LEAST 10. 

[Jonny Hotnuts]

There has been discussion about this machine at landracing.com . In fact the designer was asking for 250 mph tires a few years ago there.

Basically, the thing has NEVER gone that fast, not even close and all numbers are hypothetical.

They say they are using a 750 HP busa motor……really 750!!!!!!

Show me a 750 hp busa motor that will live as a driver….better yet show me ANY 750 HP busa!

This guy has pumped the numbers for years, pimping it to the press to gain $$$$.

I am sure this thing will beat the ACK at half throttle, and if I add 3 times the square root of 44 my dong SHOULD measure a perfect 11 inch long….and therefore it IS 11 inches long because I said so…..just like this guy saying this will go as fast as it does…..pure BS.

Don’t believe the hype……
Here is a real 350 mph bike
http://www.khulsey.com/motorcycles/zs_suzuki-ack-attack.html

[rustman]

Good points.  When you look at it in terms of how hard the guys have worked on the Ack Attack, BUB, and EZ-Hook liners, it does sound ludicrous.  My bike makes 800 hp because I turn the boost up to 55#.  I blew it at 30#, but in theory, it should make more at 85# of boost.  I can then outrun the big guns at 1/4 throttle...and then I woke up.

 

[YAG]

Damn Russ, give me some of what you are smoking!

[rustman]

heh, heh, heh.         Only thing smoking around here are my pistons.

[Jonny Hotnuts]

Other points:
In landracing it would be considered a car because it has 4 wheels.
The side lanyards are designed to be in ground contact and are not retractable.

The lanyards and exposed wheels will murder your CD, I wonder what the bearing speed of the 5" lanyard wheels will be at 350, for every one rotation of the drive tire the little wheels will turn over 5 times and even at 50 mph those little wheels would be f-ing screaming!!!!! I have 14" tires on the front of my salt car and I am worried about how the bearing will hold @ 225.

I will be willing to bet that the reason this thing has not even been proven in any format is because they have not found a viable solution to the insane wheel speed of the lanyard wheels…..

Even if the designer was trying to use a Kamm back tail there would be a significant low pressure wake generated behind the vehicle causing turbulence and huge drag.
I would say just from an outward look that the CdA of this bike-car would be easily <2. The size is much bigger than what the photos may tell. Just from the rear tire with an OD of 25" would mean the bike-car would sit at about 50" tall and is wider than a busa.

Good thing they have the twin cans on that 750hp turbo busa, the sound must be incredible!!!!

I am not going to bitch about this thing anymore. Maybe I am just pissed that they are getting so much press without meeting their claims when so many of us quietly struggle to make our cars and bikes run these speeds without ever having the notoriety that this bullshit artist has pulled.

[YAG]

And don't forget the price.

[kickstart]

Even if the designer was trying to use a Kamm back tail there would be a significant low pressure wake generated behind the vehicle causing turbulence and huge drag.
I would say just from an outward look that the CdA of this bike-car would be easily <2.

Taking a CdA of 2ft^2, and the 2 claimed figures (one power, one torque) and lobbing it into some software, looks like it would top out at about 290mph.

OK, this is very rough, but the aerodynamics would be critical.

All the best

Keith

[austxbusa]

Y'all are all so ignorant!! Have any of you seen the bike? I have!!!! And the speedo inside reads to 350 mph, so it can totally go that fast!  Right?    The guy told me he's going to hook me up with one of those speedos for my busa, then y'all will see!!!!