I love steering force feedback ! I am currently running swapped upper control arms, which gives about 3 deg caster. This provides excellent force feedback and return to center, but also seems to provide massive pushing on the gas in corners (don't know if it's bump-steer, torque-steer or what). So I need to unswap them, thereby losing my force feedback...

I've read all the stuff about manual rack conversion... tried driving around with the pump belt removed and the effort is too high for parking and evasive maneuvering. I'm sure this would be slightly reduced by eliminating hydraulic pumping losses (looping and venting etc), but doubt it will be acceptable for AX-ing.

So... has anyone tried to reduce the boost ? Seems to me it's possible to accomplish this by restricting the lines between the valve and cylinder - maybe installing needle valves in both lines to 'tune the effort'. Not sure how much restriction would be required, and if that might cause other problems...

 

With the AEM Powersteeing pulley, it made it slightly more stiffer. Not a huge difference, but I noticed it. Maybe if you can get a custom pulley made.....

 

Was it stiffer at both low and high speeds ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by neo_ &raquo;</TD></TR><TR><TD CLASS="quote">With the AEM Powersteeing pulley, it made it slightly more stiffer. Not a huge difference, but I noticed it. Maybe if you can get a custom pulley made.....</TD></TR></TABLE>

If you go any bigger than the AEM you'll most likely run into problems with the pulley hitting things (radiator, hood, other stuff). The idea about some kind of smaller diaphram fitting in the system sounds like it could have some kind of effect though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by neo_ &raquo;</TD></TR><TR><TD CLASS="quote">With the AEM Powersteeing pulley, it made it slightly more stiffer. Not a huge difference, but I noticed it. Maybe if you can get a custom pulley made.....</TD></TR></TABLE>

I think what you noticed was simply a result of the power of persuasion. I can see there being at least the potential for slightly higher effort at idle, since the pump would then be spinning more slowly than it was ever designed to spin. However, at any RPM above idle, there should be no effect on steering effort with the different pulley. Consider the wide range of speeds that the pump spins at depending upon the actual engine speed, all the while maintaining a consistent steering effort. Slightly modifying this speed by using an underdrive pulley may reduce parasitic drag a bit, but it shouldn't alter steering effort.

 

I run the UR pulley kit including the PS and I noticed no difference in turning effort at all. I plan on removing the PS all together next year with a kit supplied to me by the man that posted above .

 

This actually is a cool idea IMO.

Power steering is only useful at speeds below 5 mph. Anything above that and it becomes redundant. What would be cool is an electric power-steering pump that shuts off at speeds above those one would encounter in a parking lot, although I doubt that will ever be developed.

 

may never be developed is likely correct....but possibly adapted is even more...uh...correct

there was somebody on the RR/AX forum and "the other forum" I believe who used an old MR2 electric powersteering pump on their AX car.

The combination of often violent steering movements and wide sticky tires makes it a chore to drive... hence the frankensteining or Toyota parts and likely other similar units will work, given enough patience to play (blow it up a few times).

 

I shall never cease to be amazed by the ingenuity and pluck of the members of this board.

 

subscribing to this one. I will get the mind juices flowing with the help of my friend alexander keith.

 

https://honda-tech.com/zerothread?id=1556487

For those interested in pursuing this....