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French military victories?Did you mean French military defeats?
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displaying posts 1 to 7 of 7
Author | Subject: EHPS VS HPS |
oldbrownshoe
Seasoned Pro Location: Holon Israel Registered: 08 Aug 2008 Posts: 1,795 Status: Offline |
Post #1
In some supercharged conversions the hydraulic power steering pump replaced with electric one, is this has influence on the steering and feedback the driver feel ?________________________________________ French military victories?Did you mean French military defeats? |
Posted 29th Apr 2010 at 13:11
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lotek
Seasoned Pro Location: Berkshire Registered: 04 Dec 2007 Posts: 6,107 Status: Offline |
Post #2
if anything you get less feedback through epasthe standard hydraulic is best but has to be removed if you eant to keep aircon |
Posted 29th Apr 2010 at 14:07
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Rich E
Forum Admin Location: Hertfordshire Registered: 27 Apr 2005 Posts: 7,757 Status: Offline |
Post #3
It shouldn't affect the feel. We're only talking about a new pump here, it's still the same hydraulic system just that the pump is motor driven rather than mechanically driven.________________________________________ Rich |
Posted 29th Apr 2010 at 14:32
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oldbrownshoe
Seasoned Pro Location: Holon Israel Registered: 08 Aug 2008 Posts: 1,795 Status: Offline |
Post #4
i know that , maybe the electric pump doesn't supply the pressure the way the belt driven pump does ?everyone tell me that the belt driven pump steering have the best feedback but don't know how to explain it. ________________________________________ French military victories?Did you mean French military defeats? |
Posted 29th Apr 2010 at 16:37
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #5
The EPAS pump does generate a fair whack of pressure so it may just be the extra assistance changing the steering feel.________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
Posted 29th Apr 2010 at 19:01
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oldbrownshoe
Seasoned Pro Location: Holon Israel Registered: 08 Aug 2008 Posts: 1,795 Status: Offline |
Post #6
i'v found article about steering feedback, not relating to the steering system at all, interesting . "The steering must offer enough ''feel'' to the driver so that he can sense what's happening as he approaches the cornering limit of the tires. It must also have some self-returning action, but it cannot be so heavy as to cause fatigue or loss of sensitivity. This feel, feedback and self-returning action is a function of kingpin inclination, steering offset and castor angle : Therefore the amount of torque steer is proportional to D. The solution is to build more inclination to the kingpin so to reduce D. This is easy to be implemented in double wishbones suspension which is shown in the picture, but not MacPherson strut, whose kingpin also serves as spring and shock absorber. If we incline the kingpin too much, there will be too much lateral force transmit via the spring / shock absorber to the car body, thus causing shake and instability. Therefore we say MacPherson strut is not very suitable for FWD cars having a powerful engine. Alfa Romeo 164 is one of the examples, whose torque steer ruined the otherwise brilliant handling. No wonder its successor, 166, has switched to double wishbones front suspensions." http://www.ffcobra.com/FAQ/handling102_part2.html ________________________________________ French military victories?Did you mean French military defeats? |
Posted 8th May 2010 at 17:55
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phillipm
Seasoned Pro Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #7
Yes, that's the whole point of the Revo-Knuckle and similar systems.It's also why you should stay in Peugeots recommended range for wheel offset. But it wasn't the question ________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
Posted 8th May 2010 at 18:07
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