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  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Tue Feb 19, 2008 7:55 pm   Subject: Bilstein vs Koni vs ???
Just thought I'd follow up here. The following is clipped from another forum, but I think you'll get the idea.

I've been dealing with Chris Billings from the Shock Shop www.shock-shop.com and he wa ...
  Topic: S13 spindle tie rod mount relocation.
jmortensen

Replies: 13
Views: 18198

PostForum: Good Vibrations   Posted: Fri Sep 28, 2007 1:56 pm   Subject: S13 spindle tie rod mount relocation.
Interesting stuff on Ackermann for dirt track cars here:
http://www.woodwardsteering.com/Cat05/Cat05%20PDF%2063-79.pdf

I would figure that this would relate to drifters fairly well. They seem to ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Fri Sep 28, 2007 12:21 pm   Subject: Bilstein vs Koni vs ???
Tim, looks like I'm going to be purchasing struts in about a month. Just trying to give you a heads up, because I did want your input...

Thanks,
  Topic: S13 spindle tie rod mount relocation.
jmortensen

Replies: 13
Views: 18198

PostForum: Good Vibrations   Posted: Fri Sep 21, 2007 1:24 am   Subject: S13 spindle tie rod mount relocation.
Good article! I hadn't honestly thought about the drag on the inside tire helping the car to rotate. Now that I think about it, it reminds me of a guy I knew about 15 years ago who raced a dirt track ...
  Topic: S13 spindle tie rod mount relocation.
jmortensen

Replies: 13
Views: 18198

PostForum: Good Vibrations   Posted: Thu Sep 20, 2007 1:46 pm   Subject: S13 spindle tie rod mount relocation.
Once the weight transfers the angle of the inside wheel becomes less important, so I'll stand by the statement that it is more important for turn in and has much less effect in steady state cornering. ...
  Topic: S13 spindle tie rod mount relocation.
jmortensen

Replies: 13
Views: 18198

PostForum: Good Vibrations   Posted: Wed Sep 19, 2007 11:29 am   Subject: S13 spindle tie rod mount relocation.
You're right that was a sucky analogy. You got the point though, that what you're talking about isn't really Ackermann.

Ackermann might have some role in steady state cornering, so I suppose it cou ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Wed Sep 19, 2007 11:01 am   Subject: Bilstein vs Koni vs ???
What I'm getting out of this is that the Konis have significant variances from unit to unit. I guess this means it would be a good idea to have a set of 4 matched so not only are they more expensive, ...
  Topic: S13 spindle tie rod mount relocation.
jmortensen

Replies: 13
Views: 18198

PostForum: Good Vibrations   Posted: Tue Sep 18, 2007 12:57 pm   Subject: S13 spindle tie rod mount relocation.
Like I said when I mentioned that part, it may not agree with the way most people describe ackerman. So it's just my terminology that doesn't match others, not my understanding. And the numbers don't ...
  Topic: S13 spindle tie rod mount relocation.
jmortensen

Replies: 13
Views: 18198

PostForum: Good Vibrations   Posted: Mon Sep 17, 2007 5:21 pm   Subject: S13 spindle tie rod mount relocation.
Your statement of how Ackermann works is incorrect.

100% Ackermann in suspension terms is when the wheels turn the correct amount for the radius of the turn you're making. So that means that the i ...
  Topic: S13 spindle tie rod mount relocation.
jmortensen

Replies: 13
Views: 18198

PostForum: Good Vibrations   Posted: Sat Aug 25, 2007 11:03 pm   Subject: S13 spindle tie rod mount relocation.
I'm just curious as to why you would want less Ackermann. I'm guessing you're a drifter if you're wanting more steering angle. Seems to me that you would also want better turn in to fling the ass end ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Wed Aug 22, 2007 12:41 pm   Subject: Bilstein vs Koni vs ???
It's cool. I'm not in a big hurry. Thanks for taking the time to figure it out.
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Wed Aug 15, 2007 3:24 pm   Subject: Bilstein vs Koni vs ???
After further review it looks as though the bar rates are correct as stated.
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Tue Aug 14, 2007 9:10 pm   Subject: Bilstein vs Koni vs ???
I've been thinking about the sway bar rates. I think they're 1/2 of what they should be, because I measured the pressure exerted on the far end of the bar and did not measure the pressure exerted with ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Tue Aug 14, 2007 4:12 pm   Subject: Bilstein vs Koni vs ???
Wheelbase is 90.5 and track width is 54.75. Might end up with a narrower track in the rear. Depends on how much tire I can fit back there.

EDIT-The spindle is integrated in the Z strut. There are w ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Tue Aug 14, 2007 4:09 pm   Subject: Bilstein vs Koni vs ???
I misunderstood installation ratio then. I know bars can be progressive or digressive based on the angle of the end link vs the angle of the control arm. I have mine set perpendicular to each other at ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Tue Aug 14, 2007 3:05 pm   Subject: Bilstein vs Koni vs ???
I had to try a couple different methods to get the swaybar figures. What I ended up doing was bolting the bar mounts to some square stock and clamp that to my workbench. Then I attached the end link t ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Mon Aug 13, 2007 10:15 am   Subject: Bilstein vs Koni vs ???
Cg height should be in the 13-14 inch range as far as I can tell. I may try to get out and check the bar rates. They're solid bars, 1" in front and 3/4" in back, but I guess that doesn't te ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Sun Aug 12, 2007 10:06 pm   Subject: Bilstein vs Koni vs ???
Got some more info from a fellow racer. Looks like front unsprung weight should be in the neighborhood of 70 lbs per corner front, and about 75 per corner rear. Still working on the cg height.
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Sat Aug 11, 2007 7:19 pm   Subject: Bilstein vs Koni vs ???
The weight split on my car previously was 49.5/50.5 with corner weights of
LF 640 RF 620
LR 650 RR 640

with my 200 lb ass in the seat. I've lost ~20 lbs, I think the car will lose at least 200, ...
  Topic: Bilstein vs Koni vs ???
jmortensen

Replies: 20
Views: 35530

PostForum: Good Vibrations   Posted: Tue Aug 07, 2007 2:57 pm   Subject: Bilstein vs Koni vs ???
Hey all, first post here although I think Wiisass has had input on another of my projects over at www.hybridz.org, when I was relocating the steering rack and making new tie rod ends for bumpsteer adj ...
 
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