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Re: [Land-speed] Fw: YAW Control

To: land-speed@autox.team.net (land-speed@autox.team),drmayf@mayfco.com
Subject: Re: [Land-speed] Fw: YAW Control
From: NT788@comcast.net
Date: Sat, 20 Dec 2008 18:32:45 +0000
Dr 
15degrees is to much. Any steering corection will X the traction to the outside 
drive wheel and and cause badness,even morso when you correct! Caster is for 
letting go of the wheel in a turn causing it to center. You have a steering 
wheel to do that! Yes it does contribute at the onset! As soon as traction 
fails and the car moves sidways ,the driver corrects, and caster causes 
trouble. Elininate it! You control the car, the car shouldn't control you! Jack

-------------- Original message -------------- 
From: drmayf <drmayf@mayfco.com> 

> Jack, my car has 16 degrees of caster. But that does not help th eonset 
> of a spin. And from my experienc, does npt help after either, except if 
> you take hands off and let the car decide what to do, lol. Was fun 
> watching the steering control thes kid. Just like they told us in high 
> school...steer into th skid. 
> 
> mayf 
> NT788@comcast.net wrote: 
> 
> >Consider 1to 3 degrees of caster!Jack 
> > 
> >-------------- Original message -------------- 
> >From: "John Burk" 
> > 
> > 
> > 
> >>Mayf 
> >> 
> >>High performance gliders have a couple of things in common with rear drive 
> >>lsr cars . They carr y ballast and they work better if they give away 
> >>directional stability by moving the cg back to the middle . My glider pilot 
> >>friend was thinking of using forwardly sprung ballast that the pilot 
> >>triggered at the first sign a flat spin . 
> >> 
> >>Worst case with an unintentional cg shift would be harmless . 
> >> 
> >>John 
> >> 
> >> 
> >> 
> >> 
> >> 
> >> 
> >>>Wouldn't need to be excessiv eyaw. But yaw rate. As soon as yaw rate 
> >>>cause a liit to be reacedd then control uses a mass as a reaction body to 
> >>>create and off setting force. Mass free floats on a shaft. Controls at 
> >>>both ends to amplify the force. Use magnetics and make very high spring 
> >>>rates to put stuff back where it goes. Car would never even feel like it 
> >>>was going astray. 
> >>> 
> >>>As I develop my model of spin mathematics to see how small the yaw angle 
> >>>needs to be then I will add some control... 
> >>> 
> >>> 
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