Robbed Steering Angle?
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Joined: Apr 2003
Posts: 22,888
Likes: 3
From: Covington WA, USA
Originally Posted by mxt_77,Aug 18 2007, 04:31 PM
There's your problem... you're getting your info from a drifter.
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Homeless.
Registered User
Joined: Nov 2001
Posts: 1,557
Likes: 0
From: Hollywood
btw....drifting is gay.
S2000 EPS is not desirable for drifting as follows:
1. Insufficient steering angle from stock steering geometry. This can occur on any hydraulic PS car. Simplest remedy is so called extended
tierods(overall length is same, articulation joint in the arm is moved more outboard). these are not made by any aftermarket vendors as far as i know, since not much of a market, but can be fabricated.
2. More significantly, the EPS exerts counterproductive, unwanted, spooky inputs into your steering that thwart your desired drift control. Specifically, the variable power assist increases/decreases in conjunction with throttle on/offs. For example, in a full drift where you are/want to keep(ing) your countersteering angle dead set, but are using rapid throttle inputs(0-100%) to position and steer, and wheel speed deviating from vehicle speed, the variable assist will cause small, "random" steering changes, due to different resistence to your attempted even pressure on the steering wheel.
Solution for problems 1 and 2 (as done on the RSR and AEM drift S2000's) is to swap in a linear hydraulic rack which has extended steering angle. Both have utilized an RX7 rack with serpentine belt driven power steering pump. probable aftermarket tierods as well.
As as additional benefit, the racks are mounted on an adapter plate, elevating the rack, which is essentially getting a free anti-bump steer modification geometry thrown in while addressing the drift specific issues.
More steering angle can be added by customizing the spindle attatchments, or going to a different rack. You could take it farther by adding a steering quickener or quicker rack. You could also try an electrohydaulic powersteering unit(MR-S, other cars) so as not to modify serpentine belt and not add small parasitic hp losses.
AEM car has custom roll center adjusters on the front as well.
S2000 EPS is not desirable for drifting as follows:
1. Insufficient steering angle from stock steering geometry. This can occur on any hydraulic PS car. Simplest remedy is so called extended
tierods(overall length is same, articulation joint in the arm is moved more outboard). these are not made by any aftermarket vendors as far as i know, since not much of a market, but can be fabricated.
2. More significantly, the EPS exerts counterproductive, unwanted, spooky inputs into your steering that thwart your desired drift control. Specifically, the variable power assist increases/decreases in conjunction with throttle on/offs. For example, in a full drift where you are/want to keep(ing) your countersteering angle dead set, but are using rapid throttle inputs(0-100%) to position and steer, and wheel speed deviating from vehicle speed, the variable assist will cause small, "random" steering changes, due to different resistence to your attempted even pressure on the steering wheel.
Solution for problems 1 and 2 (as done on the RSR and AEM drift S2000's) is to swap in a linear hydraulic rack which has extended steering angle. Both have utilized an RX7 rack with serpentine belt driven power steering pump. probable aftermarket tierods as well.
As as additional benefit, the racks are mounted on an adapter plate, elevating the rack, which is essentially getting a free anti-bump steer modification geometry thrown in while addressing the drift specific issues.
More steering angle can be added by customizing the spindle attatchments, or going to a different rack. You could take it farther by adding a steering quickener or quicker rack. You could also try an electrohydaulic powersteering unit(MR-S, other cars) so as not to modify serpentine belt and not add small parasitic hp losses.
AEM car has custom roll center adjusters on the front as well.
Joined: Feb 2001
Posts: 4,061
Likes: 363
From: Redondo Beach
Originally Posted by sfphinkterMC,Aug 21 2007, 12:49 PM
btw....drifting is gay.
S2000 EPS is not desirable for drifting as follows:
1. Insufficient steering angle from stock steering geometry. This can occur on any hydraulic PS car. Simplest remedy is so called extended
tierods(overall length is same, articulation joint in the arm is moved more outboard). these are not made by any aftermarket vendors as far as i know, since not much of a market, but can be fabricated.
2. More significantly, the EPS exerts counterproductive, unwanted, spooky inputs into your steering that thwart your desired drift control. Specifically, the variable power assist increases/decreases in conjunction with throttle on/offs. For example, in a full drift where you are/want to keep(ing) your countersteering angle dead set, but are using rapid throttle inputs(0-100%) to position and steer, and wheel speed deviating from vehicle speed, the variable assist will cause small, "random" steering changes, due to different resistence to your attempted even pressure on the steering wheel.
Solution for problems 1 and 2 (as done on the RSR and AEM drift S2000's) is to swap in a linear hydraulic rack which has extended steering angle. Both have utilized an RX7 rack with serpentine belt driven power steering pump. probable aftermarket tierods as well.
As as additional benefit, the racks are mounted on an adapter plate, elevating the rack, which is essentially getting a free anti-bump steer modification geometry thrown in while addressing the drift specific issues.
More steering angle can be added by customizing the spindle attatchments, or going to a different rack. You could take it farther by adding a steering quickener or quicker rack. You could also try an electrohydaulic powersteering unit(MR-S, other cars) so as not to modify serpentine belt and not add small parasitic hp losses.
AEM car has custom roll center adjusters on the front as well.
S2000 EPS is not desirable for drifting as follows:
1. Insufficient steering angle from stock steering geometry. This can occur on any hydraulic PS car. Simplest remedy is so called extended
tierods(overall length is same, articulation joint in the arm is moved more outboard). these are not made by any aftermarket vendors as far as i know, since not much of a market, but can be fabricated.
2. More significantly, the EPS exerts counterproductive, unwanted, spooky inputs into your steering that thwart your desired drift control. Specifically, the variable power assist increases/decreases in conjunction with throttle on/offs. For example, in a full drift where you are/want to keep(ing) your countersteering angle dead set, but are using rapid throttle inputs(0-100%) to position and steer, and wheel speed deviating from vehicle speed, the variable assist will cause small, "random" steering changes, due to different resistence to your attempted even pressure on the steering wheel.
Solution for problems 1 and 2 (as done on the RSR and AEM drift S2000's) is to swap in a linear hydraulic rack which has extended steering angle. Both have utilized an RX7 rack with serpentine belt driven power steering pump. probable aftermarket tierods as well.
As as additional benefit, the racks are mounted on an adapter plate, elevating the rack, which is essentially getting a free anti-bump steer modification geometry thrown in while addressing the drift specific issues.
More steering angle can be added by customizing the spindle attatchments, or going to a different rack. You could take it farther by adding a steering quickener or quicker rack. You could also try an electrohydaulic powersteering unit(MR-S, other cars) so as not to modify serpentine belt and not add small parasitic hp losses.
AEM car has custom roll center adjusters on the front as well.
OK, comrade, what have you done with the REAL sfphinkter?!
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