180mph+ fuel consumption on a motorcycle?

[dpodblood]

Don't be ridiculous. It's not as though a pebble is going to make you crash and die on a bike at those speeds. 🙄

Ok maybe not a pebble. But you get the idea. Doing 300 KPH on public roads over extended distances means you're probably going to die.

 

[JulesMaximus]

Ok maybe not a pebble. But you get the idea. Doing 300 KPH on public roads over extended distances means you're probably going to die.

It's not the speed so much as that there are too many variables over which you would have absolutely no control. Animals, traffic, road surface issues like pot holes, oil, broken pavement, limits in your own ability, etc.

 

[JulesMaximus]

'Serious' answer?

Doing trackdays etc on literbikes usually end up around 10mpg. So for ~4 gallons you get 40 miles of top speed.

Keep in mind that your rear tire will wear out very very quickly... Like in a few hundred miles.

Honestly, I would expect fuel economy at a sustained 180mph to be far worse than a track day average simply because the bike is at full throttle all the time and fighting that huge wind resistance.

 

[EightySix Four]

'Serious' answer?

Doing trackdays etc on literbikes usually end up around 10mpg. So for ~4 gallons you get 40 miles of top speed.


Keep in mind that your rear tire will wear out very very quickly... Like in a few hundred miles.

Few hundred miles? It won't last near that long, not even close.The Veyron's tires fall apart in 15 minutes at top speed and they have way more rubber and are particularly designed for those speeds. A sport bike has a sustained 5-10 minutes at 180+ tops before the tires disintegrate below you.

 

[satyajitmenon]

Few hundred miles? It won't last near that long, not even close.The Veyron's tires fall apart in 15 minutes at top speed and they have way more rubber and are particularly designed for those speeds. A sport bike has a sustained 5-10 minutes at 180+ tops before the tires disintegrate below you.

Not if he inflates to sidewall :biggrin:

 

[EightySix Four]

Not if he inflates to sidewall :biggrin:

 

[satyajitmenon]

Link Fail 😎

 

[EightySix Four]

Link Fail 😎

Your fail is fail

Edit: I can see it on my computer just fine, but not an incognito window. The site must set a cookie to see the pic. Bastards.

 

[arrfep]

Ghost Rider could do it.

Actually, he could probably give some pretty good input.

His "Uppsala Run" is the first thing I thought of after reading Trident's "plan."

 

[TridenT]

Actually, he could probably give some pretty good input.

His "Uppsala Run" is the first thing I thought of after reading Trident's "plan."

Uppsala run is basically the only reason I think this is possible.

 

[the DRIZZLE]

Just do the IoM TT. Legal, safer, still road-like. There's no thrill going fast on public roads, too many ruhtards out there. Within 5 minutes you'd be dead.

Hunter S. Thompson disagrees.

 

[Greenman]

You have no comprehension of how fast 180 MPH is. A gentle curve at 60 MPH is so much more when you're doing 180. You won't approach a light with caution. You'll approach it at 260 feet per second. You're traveling the length of a football field (you have seen one of those, right?) in little more than a second. You won't see a gap, and you won't see the car that turns you into a greasy smear.

At 180, you don't have much acceleration left. And hitting your brakes at that speed should be... interesting. JLee is right. Sponge.

This is the right answer. At 180 you can't react fast enough to change the outcome of most situations. You'll never even see the pothole that folds your forks, or the cat that launches you into the air.

 

[TridenT]

This is the right answer. At 180 you can't react fast enough to change the outcome of most situations. You'll never even see the pothole that folds your forks, or the cat that launches you into the air.

I'd be surprised to see a cat or a massive pothole on a major freeway. (I-5) That said, I'm going to know where problems are. I could easily map out where all the potholes and shit are. Just remember where they are or have a little voice tell me when I get close via GPS.

 

[jlee]

I'd be surprised to see a cat or a massive pothole on a major freeway. (I-5) That said, I'm going to know where problems are. I could easily map out where all the potholes and shit are. Just remember where they are or have a little voice tell me when I get close via GPS.

So you'll hit a retread, then.

 

[TridenT]

The uppsalla run is 42.6 miles. He does it in sub 15 minutes, I believe. 42.6*4 = 170.4 miles. So, if I just crank it a bit harder... Seattle to Portland ain't so unbelievable. (Of course, refueling makes this harder BUT there will be less slowing down because there are a lot of open straights with no need to slow) Btw, it won't take 2 minutes to fill up. You can do it quicker if you just have the 5 gallon container on the side of the road... Drain it all in as fast as possible with some kind of speedy way. (Figuring out a way to avoid the air needing to get in from the nozzle part)

 

[Doppel]

45mpg*65mph^3/190mph^3 = 1.8mpg (gold star to Doppel)

Whether right or wrong I was in a Rav4 last week and I floored it for long enough to look at instant MPG. It was about 2.4 or 2.6. That has similar horsepower to a bike capable of 180 mph and such a bike must require more or less full throttle. They are less efficient and/or rounding errors so I picked 2 🙂

 

[TridenT]

This guy is getting at least 8 mpg if he is using a 5 gallon tank. He doesn't refuel on Uppsala Run.

 

[JCH13]

The uppsalla run is 42.6 miles. He does it in sub 15 minutes, I believe. 42.6*4 = 170.4 miles. So, if I just crank it a bit harder... Seattle to Portland ain't so unbelievable. (Of course, refueling makes this harder BUT there will be less slowing down because there are a lot of open straights with no need to slow) Btw, it won't take 2 minutes to fill up. You can do it quicker if you just have the 5 gallon bucket on the side of the road... Drain it all in as fast as possible with some kind of speedy way. (Figuring out a way to avoid the air needing to get in from the nozzle part)

You're ignoring slowing down from 180/190 mph to 0, then getting back up to speed. That'll be the real killer.

 

[TridenT]

You're ignoring slowing down from 180/190 mph to 0, then getting back up to speed. That'll be the real killer.

Killer on MPG or time? Time, it will be a problem. That's why I need to factor in a fast way to fuel up. Faster I can fuel up, faster I can launch. 0-190 is not going to take that long. These bikes go fucking crazy ass fast.

 

[dpodblood]

It's not the speed so much as that there are too many variables over which you would have absolutely no control. Animals, traffic, road surface issues like pot holes, oil, broken pavement, limits in your own ability, etc.

Well that was my point. Speed itself isn't going to kill you, but the likelihood of something bad happening along the way is pretty high. Not to mention the tires will likely blow out sustaining speeds that high for an extended period of time.

 

[JCH13]

Killer on MPG or time? Time, it will be a problem. That's why I need to factor in a fast way to fuel up. Faster I can fuel up, faster I can launch. 0-190 is not going to take that long. These bikes go fucking crazy ass fast.

To use the Hayabusa as an example again (probably one of the few production bikes even remotely capable of this run) it has a rectal-shattering 0-180 time of 18.25s, and about a 1/4 mile to bring the fun to a stand-still. It will easily cost you ~40s to come to a stop, then get going again, not including time to fill up.

With the aforementioned 17 fueling stops you're spending 11 of your 60 minutes well below your target speed. Let's say 11 minutes are spent at an average of 100mph. Let's also assume it only takes you 20s to find your "bucket of gas" get it in the bike, and take off again (I think I'm being very generous here). That means 5.7 minutes of your 1 hour are spent stopped. To do the math your cruising speed will then have to be AT LEAST 216MPH. Which will require about 50% more power than cruising at 190mph, which means that you're getting 1.3-1.4mpg, not 2, which means more fueling stops, slower 0-cruising speed times, longer braking distances, tires going 'splode, etc... you can see where this is going...

 

[PlasmaBomb]

Yup by actually going slower you may end up getting there faster...

Using JCH13's maths - in 1 hour at 180 mph you will do 148.23 miles.

Assuming that you can find a drag "sweet spot"

Dropping the speed to 140 mph should roughly double your fuel economy - (4.25mpg)

That reduces your "below target speed" from 11 minutes to about 5 min 10 s, and your stopped time to about 2 min 40 s -

So distance covered will be - 130 miles.

140/180 = 0.777 - so 22.2% reduction in speed

130/148.2 = 0.877 - so 12.3% reduction in distance...

 

[Occ]

The only solution is to have buddies at each fuel point standing by with helicopters capable of refueling you while you're still open throttle at 180 mph.

 

[JCH13]

The only solution is to have buddies at each fuel point standing by with helicopters capable of refueling you while you're still open throttle at 180 mph.

YES

Or have a helicopter continually refueling you while you're driving!

 

[A5]

YES

Or have a helicopter continually refueling you while you're driving!

Fun fact - like 95% of helicopters can't do 180 MPH! You'd have to use some kind of airplane, at which point you may as well just fly in the damn airplane.

Why are we still talking about this?