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03-06-2016, 01:32 PM
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#1 |
 
Drives: 2009 Corvette ZR1 Join Date: Aug 2012
Location: On the coast North of SFBay
Posts: 297
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Electric streering box - compression question - photo
Has anyone got any hands on experience with the Gen5 electric steering box. Trying to figure out how it handles independent compression from one side or the other at any given moment - like when one wheel goes into a pothole.
I'm found through testing that one side will compress to the other side and the entire unit move left or right, but what happens when both wheels hit a bump at the same time? Maybe the geometry of the Gen5 SS control arms and struts don't generate any movement on a radius and the wheels just moves vertically??? I think this is all a product of Bump Steer, and my guess is that not getting the geometry right will end up being a nightmare. Any help much appreciated... Here's a pic of the unit - I'm thinking about putting it a 70 Chevelle restomod project I'm doing. Last edited by pcguy2u; 03-06-2016 at 04:04 PM. |
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03-07-2016, 03:22 PM
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#2 |
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
Location: By the lake in AZ
Posts: 15,719
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Don't know if that's the new smart one or not but send me a PM with more info and i will look up what i can to help.
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03-07-2016, 05:04 PM
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#3 | |
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I found this in regards to the description and operation of the system, This seems like a daunting task you're willing to take on. Don't most resto mods still use hydraulic racks? Seems that would be the easiest route.
Power Steering System Description and Operation (Belt Drive Electronic Power Steering) The belt driven electronic power steering system consists of the following components: •The integrated electromechanical power steering unit, containing the power steering control module, its sensors, the power steering motor, a belt drive and a ball nut mechanism •The steering gear (rack and pinion) The belt driven electric power steering system reduces the amount of effort needed to steer the vehicle utilizing the power steering control module to control the power steering motor to maneuver the steering gear. The power steering control module also uses a combination of the torque sensor, motor rotational sensor, battery voltage circuit and GMLAN serial data circuit to perform the system functions. The power steering control module monitors vehicle speed and engine speed from the engine control module via the GMLAN serial data circuit to determine the amount of steering assist needed to steer the vehicle. At low speeds more assist is provided for easy turning during parking maneuvers. At higher speeds less assist is provided for improved road feel and directional stability. The power steering control module uses a combination of the torque sensor, motor rotational sensor, vehicle speed, and calculated system temperature inputs to determine the amount of assist needed. The power steering control module continuously monitors the digital torque sensor's torque and index current signals. As the steering wheel is turned and torsional twist is applied to the steering shaft, the steering input and output shafts are monitored via the torque signal circuit and then processed by the power steering control module to calculate the steering torque. The voltage signals of the motor position sensor and the digital torque sensor's index current signal are both processed by the power steering control module to detect and calculate the steering wheel angle. The power steering control module responds to the change in the digital torque sensor signals as well as the motor rotational sensor's voltage signals by commanding current to the power steering motor. The power steering control module controls the motor drive circuit to drive the alternating current motor. The power steering control module & motor assembly is attached to the base of the steering gear housing and applies power assist directly to the rack with a belt drive and a ball nut mechanism to maneuver the rack laterally depending on the direction the steering wheel is turned. The power steering control module has the ability to calculate an internal system temperature to protect the power steering system from damage caused by high temperature. To reduce a high system temperature, the power steering control module will reduce the amount of current commanded to the power steering motor, which reduces the amount of steering assist. The power steering control module has the ability to detect malfunctions within the electric power steering system. Any malfunction detected that disables steering assist will cause the SERVICE POWER STEERING message to be displayed on the driver information center.
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2016 2SS Nightfall, A8, NPP, MRC, Jet Black leather.
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03-08-2016, 10:55 AM
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#4 | |
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Drives: 2009 Corvette ZR1 Join Date: Aug 2012
Location: On the coast North of SFBay
Posts: 297
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Quote:
As for taking on a lot, this restomod is supposed to be somewhat simplistic after a certain point - just make everything from a 2014 SS work in a 70 Malibu. The engine is the most confounding - the front assembly/pulley system won't take any alterations without effecting everything else. The rack in the picture is out of the SS and should be electrically plug and play.  Got a bump steer primer from a friend and he suggests that the height of the rack is the main issue. If you keep the tie rods level and raise the hub connection to meet that point, it becomes a matter of using the correct Heim rod end and making adjustments thereto. He agreed to come by and make sure it's set up correctly before final welding.  If anyone has any interest, here's my build thread: http://www.chevelles.com/forums/12-b...aro-donor.html |
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