power steering ratio vs manual
06-29-2005 | 03:10 AM
#3
Three Wheelin'
Joined: Jul 2001
Posts: 1,699
Likes: 0
From: San Francisco, CA Porsche: '92 968 Blk/Cashmere
manual
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steering wheel ratio 22.39:1
turns lock to lock 3.84-4.02
power
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steering wheel ratio LHD 18.85:1/RHD 18.96:1
turns lock to lock LHD 3.24/RHD 3.26
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steering wheel ratio 22.39:1
turns lock to lock 3.84-4.02
power
-----------
steering wheel ratio LHD 18.85:1/RHD 18.96:1
turns lock to lock LHD 3.24/RHD 3.26
06-29-2005 | 09:30 AM
#4
Race Director
Joined: Jan 2002
Posts: 12,208
Likes: 16
From: The Heart of it All
Aside from the ratios that have already been posted, I can tell you that from personal experience, it only takes a day or two to get used to the manual rack and begin to enjoy it.
At first, you notice that it takes a little more input to get around a tight corner (due to the ratio), but once you get used to it, you don't notice it at all. You will also notice that you can feel a little more feedback from the car and can notice when it is about to step out, or get loose. The only downside I can tell you about going to a manual rack is that on VERY tight autox courses with a lot of bus-stops and 180's, it is a bit of a bitch. Otherwise, on open roads and tracks, the feedback and feel are incredible. The car feels rock-solid and connected. (plus there is the added bonus of a simple system with no potential for leaks)
At first, you notice that it takes a little more input to get around a tight corner (due to the ratio), but once you get used to it, you don't notice it at all. You will also notice that you can feel a little more feedback from the car and can notice when it is about to step out, or get loose. The only downside I can tell you about going to a manual rack is that on VERY tight autox courses with a lot of bus-stops and 180's, it is a bit of a bitch. Otherwise, on open roads and tracks, the feedback and feel are incredible. The car feels rock-solid and connected. (plus there is the added bonus of a simple system with no potential for leaks)
06-29-2005 | 11:27 AM
#5
Rennlist Member
Joined: Apr 2003
Posts: 8,022
Likes: 56
From: California
I love my "manual" rack - the feel is incredible. I opted to retain the PS rack with the lower ratio and the only time its a PITA is after pulling a muscle at the gym (this always requires having your mother help you get dressed 
).
).
06-29-2005 | 12:23 PM
#6
Race Director
Joined: Aug 2002
Posts: 17,643
Likes: 8
From: Phoenix, Az
Originally Posted by tifosiman
The only downside I can tell you about going to a manual rack is that on VERY tight autox courses with a lot of bus-stops and 180's, it is a bit of a bitch. Otherwise, on open roads and tracks, the feedback and feel are incredible. The car feels rock-solid and connected. (plus there is the added bonus of a simple system with no potential for leaks)
I concur with feedback comments. Much better at the track.
On my 83 even in autocrossing I like the manual rack. It take a bit of unorthodox technique, but can still work well. Come to a 180. Simple remove one hand reach over the other handand pull the wheel for all its worth. The car will turn on dime if you have suspension balanced.
Sure it is not traditional by keeping your hands at 9 & 3 (or 10 & 2) , but doing that gives you the leverage to crank the wheel.
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06-29-2005 | 02:11 PM
#8
Three Wheelin'
Joined: Jul 2001
Posts: 1,699
Likes: 0
From: San Francisco, CA Porsche: '92 968 Blk/Cashmere
Originally Posted by tifosiman
At first, you notice that it takes a little more input to get around a tight corner (due to the ratio), but once you get used to it, you don't notice it at all.
