Landracing Forum

Thrust-powered Land Speed information => Discussions on absolute land speed records => Topic started by: J79 on February 18, 2018, 07:39:01 PM

Title: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: J79 on February 18, 2018, 07:39:01 PM: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.

In this video, at 22:16, the Physics Teacher spins a bicycle wheel, holds the axle in both hands and sits on a movable stool. When he leans the wheel to the left, the stool turns left, when he leans the wheel to the right, the stool turns right.

What kind of affect does this gyroscopic affect have on high speed cars, 3 wheel cars or 4 wheel cars? What does it want to make the car do that it would not do if it was on ice skating blades instead of wheels? Anyone want to share some simple knowledge of this, videos, examples, links etc?

https://www.youtube.com/watch?v=XPUuF_dECVI (https://www.youtube.com/watch?v=XPUuF_dECVI)
Title: Re: Gyroscopic Affect of Spinning Wheels on High Speed Cars Questions.
Post by: BHR301 on February 18, 2018, 09:42:45 PM: Propster strikes again!
Title: Re: Gyroscopic Affect of Spinning Wheels on High Speed Cars Questions.
Post by: Milwaukee Midget on February 19, 2018, 10:56:05 AM: Quote from: BHR301 on February 18, 2018, 09:42:45 PM
Propster strikes again!

No, the Propster wouldn't be asking questions or attempting to stimulate discussion.
Title: Re: Gyroscopic Affect of Spinning Wheels on High Speed Cars Questions.
Post by: Stainless1 on February 19, 2018, 10:58:55 AM: Franklin.... 'nuff crap
Title: Re: Gyroscopic Affect of Spinning Wheels on High Speed Cars Questions.
Post by: JimL on February 19, 2018, 12:25:37 PM: Gyroscopic precession iis the curse of living on a planet with gravity. All you can do is make anything that spins as light as possible and try not to disturb its direction of travel (as a group of components).

You will find the formulas used by professional marine pilots are very accurate. Those guys are not simply "fellows that know the harbor or can read a chart". They must pass stringent tests of their ability to calculate the up or down movement of the bow of a ship when they call for a change of shaft rpm or make changes to the course of the vessel.

In simpler terms, this is the force that rattles the flywheel off the crankshaft of your motorhome's Onan generator when your wife insists you run the roof-air on a bumpy freeway.

MotoCzysc tried to run counter-rotating crankshafts to "cancel" the effect in a race bike. An old friend told me how much money was spent on that project, but it's not my place to comment. They moved on to electric racebikes and had better success.
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: J79 on February 19, 2018, 05:08:31 PM: More videos demonstrating the same Gyroscopic Precession Affect. So what does this do to a car traveling at high speed? Does it want to make the wheels lift up and rotate like shown in the videos?

1. holding a 3 foot long axle with a 40 pound 12" steel wheel spinning at high speed and lifting the device over head
https://www.youtube.com/watch?v=GeyDf4ooPdo (https://www.youtube.com/watch?v=GeyDf4ooPdo)

2. holding the same device and standing on a weight scale.
https://www.youtube.com/watch?v=tLMpdBjA2SU (https://www.youtube.com/watch?v=tLMpdBjA2SU)

3. Forces causing Gyroscopic Precession explained.
https://www.youtube.com/watch?v=ty9QSiVC2g0 (https://www.youtube.com/watch?v=ty9QSiVC2g0)

4. http://www.gyroscopes.org/behaviour.asp (http://www.gyroscopes.org/behaviour.asp)
"If the gyroscope/engine is spinning at a fairly high speed in a clockwise direction, as seen from the back of the car and as shown in the diagram above. When the car is turned to the right (clockwise from above) forces A and B are applied to the structure of the car forcing the front end of the car down and the back end up. If the car is turned to the left then the front end of the car is forced up and the back end forced down. If the gyroscope is spinning in the opposite direction then the reverse will happen."
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: turborick on February 19, 2018, 07:16:44 PM: I wonder what these guys are trying to do at 15000 rpm
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: J79 on February 19, 2018, 11:24:44 PM: Those wheels look 4 inches diameter. What are they used on?
Quote from: turborick on February 19, 2018, 07:16:44 PM
I wonder what these guys are trying to do at 15000 rpm
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: 4-barrel Mike on February 20, 2018, 12:00:41 AM: Quote from: J79 on February 19, 2018, 11:24:44 PM

Those wheels look 4 inches diameter. What are they used on?

Do you see the website url below his name? Check it out. :x
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: mtiberio on February 20, 2018, 07:39:27 AM: Quote from: J79 on February 18, 2018, 07:39:01 PM
What kind of affect does this gyroscopic affect have on high speed cars, 3 wheel cars or 4 wheel cars?

Does nothing if you do not try and steer. 8^))
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: turborick on February 20, 2018, 09:16:49 AM: Quote from: J79 on February 19, 2018, 11:24:44 PM

Those wheels look 4 inches diameter. What are they used on?
Quote from: turborick on February 19, 2018, 07:16:44 PM
I wonder what these guys are trying to do at 15000 rpm
The wheels are 13 inches in diameter and are used on this streamliner
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: J79 on February 20, 2018, 09:54:24 AM: I saw the link after you mentioned it. Are those the front wheels on the Nebulus? If so, are they about 12 inches in diameter?
Quote from: 4-barrel Mike on February 20, 2018, 12:00:41 AM
Quote from: J79 on February 19, 2018, 11:24:44 PM

Those wheels look 4 inches diameter. What are they used on?

Do you see the website url below his name? Check it out. :x
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: Stainless1 on February 20, 2018, 10:54:01 AM: Franklin.... try reading all the posts in a thread, not just yours, the answer was there for 10 hours....
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: RichFox on February 20, 2018, 10:57:37 AM: The trick is not the wheels. It's how they steer.
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: Stan Back on February 20, 2018, 04:53:18 PM: SOMEBODY DO SOMETHING!!!
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: Seldom Seen Slim on February 20, 2018, 06:36:07 PM: Why? This is fun to watch.
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: Stan Back on February 20, 2018, 08:33:28 PM: I've never shouted before. Works the same way here as at home.
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: Stainless1 on February 20, 2018, 10:17:31 PM: Stan, thinking of starting a new category.... Meaningless crap that Franklin posts... just don't know where to put it... maybe in Humor.... things that you think are funny
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: panic on February 27, 2018, 02:56:39 PM: the curse of living on a planet with gravity

And the effect on the Moon (same mass, 1/6th the weight) would be ???
Title: Re: Gyroscopic Precession Affect of Spinning Wheels on High Speed Cars Questions.
Post by: floydjer on February 27, 2018, 03:07:56 PM: Bob....Funny ? Or sad and pathetic ? :cheers: