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-   -   RSR struts raised spindles and bump steer (http://forums.pelicanparts.com/porsche-911-technical-forum/282038-rsr-struts-raised-spindles-bump-steer.html)

Chuck Moreland 05-18-2006 08:52 AM

That's not the steering arm. That's an extra support to strengthen due to the extra leverage introduced by a hella long bump steer spacer. Sorta like having two steering arms, with the tie rod end between them.

VZ935 05-18-2006 09:03 AM

It works though.. this car handled very well and since you guys seem to be Bay Area people last time out a Thunderhill in 2001 or 2002 it did a sub 1:50 running the Eagles Nest.

http://img.photobucket.com/albums/v6...%20R/1552s.jpg
http://img.photobucket.com/albums/v6...1%20R/1580.jpg
http://img.photobucket.com/albums/v6...1%20R/1584.jpg
http://img.photobucket.com/albums/v6...20R/1550ss.jpg

Steve@Rennsport 05-18-2006 09:40 AM

Quote:

Originally posted by Wil Ferch
We need guys like Tyson, Bruce Anderson, Steve Weiner, Steve Wong, John Walker, etc on the East coast !!!!........

That way these guys can conduct "seminars" and we can go to class !!

...bit of a trek if the distance is 3000 miles away ... :(

- Wil

Hi Wil:

LOL,...We hold Tech Sessions at our shop about once a year and so consider this a standing invitation,...:)

We're also having an Open House during Parade week (its here in PDX) on Aug 9th. :)

Tyson Schmidt 05-18-2006 10:55 AM

Quote:

Originally posted by Chuck Moreland
That's not the steering arm. That's an extra support to strengthen due to the extra leverage introduced by a hella long bump steer spacer. Sorta like having two steering arms, with the tie rod end between them.

It's a "bi-plane" steering arm. LOL!


No doubt it works. Beautiful car BTW.

analogmike 05-18-2006 12:55 PM

talk about raised spindles!!!!!!

http://img.photobucket.com/albums/v6...20R/1550ss.jpg

Jeroen 05-18-2006 02:09 PM

Quote:

Originally posted by Tyson Schmidt
Looks like custom front struts as well. Looks like someone already thought about bump-steer, since the strut has the steering arm mounted very low. Well below the spindle.
is what we see in the pic the actual steering arm, or is it an extra tab below the stock steering arm that mounts the rod-end in double sheer?

[edit]
never mind, I hadn't seen the new pics yet...
[/edit]

Jeroen 05-18-2006 02:16 PM

still a question though...
the pics are a bit vague, but is that bottom arm mounted with a clamp construction?
Is that so you can still move it for adjustment?

jpahemi 05-20-2006 06:50 PM

Is it absolutely mandatory to install rack spacers if you instal 18mm RSR raised spindle struts? I plan on leaving the ride height at it's present level, just want to regain the suspension travel. The present height is a tad lower than Euro.
j,.p.

Steve@Rennsport 05-20-2006 08:39 PM

JP:

If you use the 18mm version of the raised spindle RSR strut, you'll need a bump steer kit such as either the Elephant Racing one or an ERP one.

Rack spacers are not needed at that spindle height. :)

VZ935 05-20-2006 11:00 PM

Quote:

Originally posted by Jeroen
still a question though...
the pics are a bit vague, but is that bottom arm mounted with a clamp construction?
Is that so you can still move it for adjustment?



Yes .. you can move it up and down on the strut .

jpahemi 05-23-2006 07:46 PM

Steve:
If I use the 18 mm RSR struts and keep the ride height at Euro (give or take a 1/2"), would I still need the bump steer kit? If yes, it would seem that the rack spacers would be a simpler fix and less chance of failure that could occur with the bump steer kits. Am I wrong in this thought?
Regards,
J.P.

Tyson Schmidt 05-23-2006 08:19 PM

Quote:

Originally posted by jpahemi
Steve:
If I use the 18 mm RSR struts and keep the ride height at Euro (give or take a 1/2"), would I still need the bump steer kit? If yes, it would seem that the rack spacers would be a simpler fix and less chance of failure that could occur with the bump steer kits. Am I wrong in this thought?
Regards,
J.P.


To do it properly, you need a lot more than the rack spacers can give, like Steve said.


You could just use the rack spacers, but they would just be a stop-gap. You'll end up with worse bump steer than a stock car lowered the same amount, but at least it won't be as bad as nothing at all.

The spacers are only about 12-13mm, so they don't quite compensate for the raised spindles. I deally, you want to compensate even more than just the amount the spindles are raised, like around 1.5". That can only be accomplished with the drop-link style kits, or bending the arms, or both in combination to get it right.

jpahemi 05-23-2006 08:31 PM

Thanks Tyson. I've been delaying installing these struts due to the geometry problems that occur by using them. I'm trying to keep it as simple as possible, not due to cost, but more for integrity of the system. My feeling is the more components I install, the greater the chance of failure. Rack spacers virtually have no failure rate; drop links worry me a bit, but if I need them for proper geometry with the RSR struts, then I guess I have no choice, regardless of vehicle height.
Regards,
J.P.


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