How much extra HP from burning nitro?

My theory about Gunner's ridiculous stories is that each one represents something he's trying to compensate for. In this case, which is more likely:

A) He hit 265.

B) That's he's never been able to afford anything nice or fast and his keyboard is his only vehicle that can top 100.

On 2/26/2013 4:41 PM, whoyakidding's ghost wrote:

Oh, that's cool. I don't remember ever seeing that one.

Get one of the cheap foam trainers. Start with slow movements and don't overcorrect. Overcorrecting is what gets you into trouble.

Combat planes were wild things. They also were easy to build, thankfully. They had no fuselage; all wing and elevator.

I never did it that way myself, but I think that was it. I know they glued a string to the top and held it up with a long stick until it was ready to fly.

My grandmother owned a florist's shop, so my dad had an endless supply of tissue paper. I guess he made green balloons.

Can you explain the math?

Dan

For a bicycle the force necessary to overcome "wind resistance" requires 216,228,92 watts, or 289.96 H.P. at 264 MPH. This, of course, does not include the losses due to internal friction in the engine, rolling resistance of tires and so on, and is calculated solely on cross sectional area, I'm sure.

A non modified (non calibrated) engine won't run worth crap on nitromethane. The engine needs about 8.7 times as much Nitro per unit of air compared to gasoline, but only produces about 2.3 times as much power from a full cyl charge.

So, an engine running stock compression and valve timing, but with fuel injection or carburetion modified to pass about 8.7 times as much fuel, COULD produce up to 2.3 times as much power.

Jeez, all those toys....

No hot-air tissue balloons like the ones they used to sell, though. And the prices are pretty steep.

You have to remember those "top fuel" cars are virtually all supercharged - and they do pump enough fuel into them to fill the combustion chamber up to90+% in volume. - with 60 PSI (over 4 atmospheres) of boost - SO - 4X as much air as a NA engine running at

100% VE, and 2.3 times as much power per unit of fuel = at leat 12 times as much power as a non modified engine. Then add additional compression to the "mix". They burn about 75 gallons per minite. They use 85% Nitro - the rest is alcohol - generally Methanol.

If a top fuel engine puts out 7500 HP, it is producing 8400 HP - the other 900HP drives the supercharger!!!!

That yellow battery powered one that HF sells actually flies pretty good, but you will want a supply of wings.....

No. I used a speed shop's calculator and I'm not telling.

Oh, all right....The horsepower required to maintain a specific speed:

P = 1/2 * Cd * A * k * v^3

P = horsepower required for the velocity in question Cd = coefficient of drag A = frontal area k = constant to account for the density of air (or you can use the actual number - 1.2g/m^3, if you watch your units throughout) v = velocity

In addition, you have to work in the rolling resistance. For a motorcycle with high-speed, hard tires, you can ignore it for these purposes. I'll give you a shortcut for the formula in a minute.

I'll give you the site of a calculator but first, note the v^3. That's the key to the whole thing, which leads people to overestimate how fast they can go on, say, a Kawasaki Ninja with two or three hundred horsepower.

Here's the calculator.

Knowing that the unregulated speed of a Ninja is 200 mph and it achieves that with 190 hp, you can plug in any trial numbers you want to get everything to work (I used Cd = 0.5; A = 7; weight 500 lb.) As long as the relationship of these numbers isn't ridiculous, all you need to know is what trial numbers give you 200 mph with 190 hp. Then use those same trial values and try changing the speed. That will give you the horsepower.

I tested the online calculator by using a shortcut of the real formula on my own pocket calculator:

Original speed cubed over original horsepower = final speed cubed over "x", where "x" is horsepower required.

Actually, I tested it by using the variable for speed, and assumed 450 horsepower, to test the online calculator. It works either way.

By knowing the original speed and horsepower, you can do away with drag coefficient, frontal area, and air density. It's the relationship between power and speed that you need, plus the "cube" factor for velocity. The shortcut, or the online calculator, will give that to you.

Have fun.

Yup , that was also in the info I read . The supercharger takes more horsepower than 3 average cars produce .

When I was a teen I made 'em out of those plastic bags the dry cleaners send your suits home in ... but I always had a problem with getting enough heat . I was using candles , and that just wasn't enough .

"Pathological Liar ? Types

4.1 Daydreaming Pathological Liar ? Pseudologia Fantastica

Some of the more extreme forms of pathological lying is Pseudologia Fantastica. This is a matrix of facts & fiction, mixed together in a way that makes the reality and fantasy almost indistinguishable. The pseudologue type pathological liar makes up stories that seem possible on the surface, but over time things start falling apart. Pseudologues have dynamic approach to their lies, they are likely to change the story if confronted or faced with disbelief, they have excessive anxiety of being caught and they desperately try to modify their story to something that would seem plausible to create or preserve a sense of self that is something they wish they were or at least something better than they fear others would find out they are. The excessive anxiety is driven by unusually low self-esteem, the person tries to hide reality by creating a fake reality, and once the story has enduring quality to it, he/she is likely to repeat it and if repeated enough times he/she might start believing in it as well. This reality escape can be triggered of a past incident or of an unbearable present for the pseudologue.

About 30% of daydreaming pathological liars have brain dysfunction. For some it may take the form of learning disabilities, ex. dyslexia. Often those with cerebral dysfunction have greater verbal production & lower developed logical, analytical parts of the brain, thus they often fail to control verbal output.

Read more

"

His habits don't have to make sense, even to himself.

(3072151) $79.95

Ok, but we were talking about tissue-paper hot-air balloons.

I have a funny story about those weather balloons, and my 8th-grade buddy's hydrogen-generating apparatus, with zinc chips and some kind of acid, but I'll spare you.

HAHAHA !!!

WE filled them with hydrogen, THEN attached the candles....letting them to drift at various locations over Puget Sound...

Oftentimes, numerous UFO sightings were reported on the nightly news...

Start with a hair dryer or heat gun, until the bag is inflated. Then apply your flame.

That's how I did it.

You need to know something about the surface area.

Aww come on Ed...

--ya probably already told about it once, just that we've both done forgotten.

It has always interested me that some people who are mechanics and understand engineering, can nonetheless say things like "My neighbour's road car goes 200mph on methanol" and (recently heard) "Our Harley [unblown] nitro drag-bike makes 900bhp."

I don't blame anyone for being an enthusiast, but it's shame when their brain allows nonsense.

Once a vehicle, 2- or 4-wheeled, exceeds 230mph, it is entering exponentially-difficult territory. Only very serious and well- equipped outfits succeed out there. Those Bugattis and Lambo's that are occasionally taken to a test track for an all-out run at the mfr's claimed maxr, are accompanied by computers and tire specialists, weather-monitors, and even then frequently suffer damage.