Notices
RX-8 Racing Want to discuss autocrossing, road-racing and drag racing the RX-8? Bring it here. This is NOT a kills/street racing forum.
View Poll Results: Should the Track Springs by Progress Go into Production with spring rates discussed?
Yes! Pull the Trigger I am ready to buy!
32
74.42%
Not interested.
11
25.58%
Voters: 43. You may not vote on this poll

Progress Technology Springs

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 06-09-2009 | 09:24 AM
  #101  
altiain's Avatar
Sparky!
iTrader: (3)
 
Joined: Sep 2004
Posts: 547
Likes: 0
From: East Jesus (Murphy, TX)
Originally Posted by Fluid Motorsports
And because most will be using Koni Yellow's we have changed the Drop of the spring so the end user will not experience a higher than desired drop.

The New Drop is

Front: -0.8 inches
Rear: -0.5 inches

When coupled with the Koni drop I think this would put the car at a sweet spot.
That actually sounds better than the numbers that were first quoted.

Originally Posted by Fluid Motorsports
Cito and altiain are th test subjects.

They are to please take very detailed notes when installing and on their test runs around town as well as the track/course.

We want to be 100% sure this is where we want to be and there are no issues.

Thank You!
Will do.

My plan is to take ride height measurements after I've got a couple hundred miles on the car to allow for settling. I'll have comparison numbers against Koni/RB springs (what is currently on my car) plus I intend to measure a couple of local Koni/OEM B Stock cars for comparison.

Once the springs are settled I'll have the car realigned. Hope to be able to report front and rear camber adjustment range with these springs, along with "before" measurements on my car with both stock springs and the RB springs for comparison, since every car is different.

I'll be providing my personal subjective feedback, some lap time comparisons at MSR, plus some feedback and PAX results from Texas Region and Southwest Divisional events. Obviously this won't all happen overnight, but I think by the end of July I should have some pretty good feedback to offer, including track and autocross impressions.

Any other suggestions for feedback that you guys can think of?
Old 06-09-2009 | 10:21 AM
  #102  
chiketkd's Avatar
Row faster, I hear banjos
iTrader: (5)
 
Joined: Jul 2003
Posts: 2,217
Likes: 0
From: Charlottesville, VA
Originally Posted by altiain
My plan is to take ride height measurements after I've got a couple hundred miles on the car to allow for settling. I'll have comparison numbers against Koni/RB springs (what is currently on my car) plus I intend to measure a couple of local Koni/OEM B Stock cars for comparison.

Once the springs are settled I'll have the car realigned. Hope to be able to report front and rear camber adjustment range with these springs, along with "before" measurements on my car with both stock springs and the RB springs for comparison, since every car is different.

I'll be providing my personal subjective feedback, some lap time comparisons at MSR, plus some feedback and PAX results from Texas Region and Southwest Divisional events. Obviously this won't all happen overnight, but I think by the end of July I should have some pretty good feedback to offer, including track and autocross impressions.

Any other suggestions for feedback that you guys can think of?
Iain,

This sounds excellent. I'm especially interested in seeing what front & rear camber adjustments you can get with these springs.

Some before & after pics of your car at the track/autocross would be nice also.
Old 06-09-2009 | 05:23 PM
  #103  
Cito's Avatar
Registered
 
Joined: Oct 2005
Posts: 263
Likes: 0
From: Mason City, Iowa
Hey, I didn't know this was a science project. I am all for it. I will post progress here.
Old 06-09-2009 | 05:27 PM
  #104  
Race Roots's Avatar
Thread Starter
Former Sponsor
iTrader: (64)
 
Joined: Sep 2008
Posts: 2,364
Likes: 0
From: Florida
Originally Posted by chiketkd
Awesome. That's excellent news Brice!!!


I know, I have you guys to thank!

Originally Posted by altiain
That actually sounds better than the numbers that were first quoted.



Will do.

My plan is to take ride height measurements after I've got a couple hundred miles on the car to allow for settling. I'll have comparison numbers against Koni/RB springs (what is currently on my car) plus I intend to measure a couple of local Koni/OEM B Stock cars for comparison.

Once the springs are settled I'll have the car realigned. Hope to be able to report front and rear camber adjustment range with these springs, along with "before" measurements on my car with both stock springs and the RB springs for comparison, since every car is different.

I'll be providing my personal subjective feedback, some lap time comparisons at MSR, plus some feedback and PAX results from Texas Region and Southwest Divisional events. Obviously this won't all happen overnight, but I think by the end of July I should have some pretty good feedback to offer, including track and autocross impressions.

Any other suggestions for feedback that you guys can think of?
Absolutely Perfect.


Originally Posted by Cito
Hey, I didn't know this was a science project. I am all for it. I will post progress here.
Please do thank you!

The sooner feed back comes in the faster everyone else can Enjoy!
Old 06-10-2009 | 03:19 AM
  #105  
Winning 8's Avatar
Hot Pit
 
Joined: Jul 2005
Posts: 658
Likes: 0
From: Castro Valley, CA
Fluid
I pre-order the auto-x spring from you already, if any of the tester back out, just send it to me...
Old 06-10-2009 | 06:51 AM
  #106  
Race Roots's Avatar
Thread Starter
Former Sponsor
iTrader: (64)
 
Joined: Sep 2008
Posts: 2,364
Likes: 0
From: Florida
will do.

Thanks

Brice
Old 06-12-2009 | 09:17 PM
  #107  
Winning 8's Avatar
Hot Pit
 
Joined: Jul 2005
Posts: 658
Likes: 0
From: Castro Valley, CA
Originally Posted by altiain
My plan is to take ride height measurements after I've got a couple hundred miles on the car to allow for settling. I'll have comparison numbers against Koni/RB springs (what is currently on my car) plus I intend to measure a couple of local Koni/OEM B Stock cars for comparison.

Once the springs are settled I'll have the car realigned. Hope to be able to report front and rear camber adjustment range with these springs, along with "before" measurements on my car with both stock springs and the RB springs for comparison, since every car is different.

I'll be providing my personal subjective feedback, some lap time comparisons at MSR, plus some feedback and PAX results from Texas Region and Southwest Divisional events. Obviously this won't all happen overnight, but I think by the end of July I should have some pretty good feedback to offer, including track and autocross impressions.

Any other suggestions for feedback that you guys can think of?
Pic on fender gap, Koni shock setting.
Old 06-19-2009 | 06:13 AM
  #108  
SiLVeRE8's Avatar
a.k.a. WhITeRE8
iTrader: (8)
 
Joined: Apr 2005
Posts: 2,231
Likes: 0
From: Nor Cal *
Will we be able to request a lower drop on the progress springs? I know this maybe asking too much, but I'm just wondering because I like the spring rates... BTW who knows... they might actually look nice with the current height rating. Just gotta see some pics first!
Old 06-19-2009 | 08:12 AM
  #109  
Race Roots's Avatar
Thread Starter
Former Sponsor
iTrader: (64)
 
Joined: Sep 2008
Posts: 2,364
Likes: 0
From: Florida
Originally Posted by SiLVeRE8
Will we be able to request a lower drop on the progress springs? I know this maybe asking too much, but I'm just wondering because I like the spring rates... BTW who knows... they might actually look nice with the current height rating. Just gotta see some pics first!
Nope, not unless the majority votes to go that way. I can make it happen if you want to purchase 50 sets of desired height and such
Old 06-23-2009 | 07:54 PM
  #110  
Winning 8's Avatar
Hot Pit
 
Joined: Jul 2005
Posts: 658
Likes: 0
From: Castro Valley, CA
anxious for more news
Old 06-23-2009 | 11:25 PM
  #111  
Race Roots's Avatar
Thread Starter
Former Sponsor
iTrader: (64)
 
Joined: Sep 2008
Posts: 2,364
Likes: 0
From: Florida
Nothing yet
Old 06-24-2009 | 08:50 AM
  #112  
chiketkd's Avatar
Row faster, I hear banjos
iTrader: (5)
 
Joined: Jul 2003
Posts: 2,217
Likes: 0
From: Charlottesville, VA
Brice,

Quick question about the ride height drop. When looking over aftemarket springs available for the RX-8, I see that some drop the car evenly (Mazdaspeed, RacingBeat, etc) while others like these new Progress springs drop the front slightly more than the rear (Tein S-Tech & H-tech, Eibach Pro, Tanabe, etc).

Is there a benefit of dropping the front of the RX-8 slightly more than the rear? Will this leave a slight rake?

Thanks!

-Chike
Old 06-25-2009 | 12:15 AM
  #113  
swoope's Avatar
Zoom-Freakin'-Zoom
iTrader: (5)
 
Joined: Jan 2004
Posts: 14,602
Likes: 36
From: orlando, fl
Originally Posted by chiketkd
Brice,

Quick question about the ride height drop. When looking over aftemarket springs available for the RX-8, I see that some drop the car evenly (Mazdaspeed, RacingBeat, etc) while others like these new Progress springs drop the front slightly more than the rear (Tein S-Tech & H-tech, Eibach Pro, Tanabe, etc).

Is there a benefit of dropping the front of the RX-8 slightly more than the rear? Will this leave a slight rake?

Thanks!

-Chike
this is not aimed at me, but i am going to comment.

this is a quote from a owner of a koni challenge rx8 team owner.

the car likes a bit of rake in it!

yep, that is what he said.

beers
Old 06-25-2009 | 06:32 AM
  #114  
Cito's Avatar
Registered
 
Joined: Oct 2005
Posts: 263
Likes: 0
From: Mason City, Iowa
My car needs more front drop than rear. Even with the koni's, my car looks like it has the AWD option in the front. I am thinking that the proposed drop is going to even things out on my car. Not sure I will have much of a rake at all, but I am excited to find out. Hopefully, those prototype springs are cooling off right now getting ready for shipment.
Old 06-25-2009 | 08:39 AM
  #115  
chiketkd's Avatar
Row faster, I hear banjos
iTrader: (5)
 
Joined: Jul 2003
Posts: 2,217
Likes: 0
From: Charlottesville, VA
Originally Posted by swoope
this is not aimed at me, but i am going to comment.

this is a quote from a owner of a koni challenge rx8 team owner.

the car likes a bit of rake in it!

yep, that is what he said.

beers
Thanks swoope. That's exactly what I was looking to hear. I wanted to be sure there was a performance benefit to this rake, and it wasn't just for aesthetics.
Originally Posted by Cito
My car needs more front drop than rear. Even with the koni's, my car looks like it has the AWD option in the front. I am thinking that the proposed drop is going to even things out on my car. Not sure I will have much of a rake at all, but I am excited to find out. Hopefully, those prototype springs are cooling off right now getting ready for shipment.
The greater wheel gap in the front makes it look that way, but the car is still level. So these springs will add ~0.3" (7.5mm) of rake to the car.
Old 06-26-2009 | 09:20 PM
  #116  
Race Roots's Avatar
Thread Starter
Former Sponsor
iTrader: (64)
 
Joined: Sep 2008
Posts: 2,364
Likes: 0
From: Florida
Damn it looks like Mid to End of July before the prototypes will be completed and ready for field testing.
Old 06-27-2009 | 12:47 PM
  #117  
-RX8-'s Avatar
Registered User
 
Joined: Jan 2008
Posts: 116
Likes: 1
looking forward to this. would be great to see how they react with the koni's. they should do great.
Old 06-27-2009 | 03:23 PM
  #118  
czar's Avatar
Almost boosted
iTrader: (3)
 
Joined: May 2008
Posts: 708
Likes: 1
From: Austin, Texas
are these the same as the autox springs listed ?
Old 07-05-2009 | 09:56 AM
  #119  
Rosko350z's Avatar
I Heart 2nd Gear Racing
 
Joined: Feb 2006
Posts: 162
Likes: 0
From: Tampa, FL
Chalk one more person interested in these springs.
Old 07-05-2009 | 10:52 AM
  #120  
Race Roots's Avatar
Thread Starter
Former Sponsor
iTrader: (64)
 
Joined: Sep 2008
Posts: 2,364
Likes: 0
From: Florida
Originally Posted by czar
are these the same as the autox springs listed ?
The Street Springs?

No they have different spring rates and ride heights.
Old 07-18-2009 | 01:25 PM
  #121  
Winning 8's Avatar
Hot Pit
 
Joined: Jul 2005
Posts: 658
Likes: 0
From: Castro Valley, CA
any news on auto springs?
dieing to try it out....
Old 07-21-2009 | 12:19 PM
  #122  
Race Roots's Avatar
Thread Starter
Former Sponsor
iTrader: (64)
 
Joined: Sep 2008
Posts: 2,364
Likes: 0
From: Florida
Originally Posted by Winning 8
any news on auto springs?
dieing to try it out....
Shipping to me this week, another tested dropped out so Winning 8 you will be getting one of the prototypes to test.
Old 07-21-2009 | 12:40 PM
  #123  
chiketkd's Avatar
Row faster, I hear banjos
iTrader: (5)
 
Joined: Jul 2003
Posts: 2,217
Likes: 0
From: Charlottesville, VA
Originally Posted by Fluid Motorsports
Shipping to me this week, another tested dropped out so Winning 8 you will be getting one of the prototypes to test.
That's awesome. Thanks for the update Brice!!!
Old 07-21-2009 | 02:13 PM
  #124  
Cito's Avatar
Registered
 
Joined: Oct 2005
Posts: 263
Likes: 0
From: Mason City, Iowa
I am looking forward to getting the springs.

At this point, my car is a basic B-stock RX8. I recorded some baseline MaxQ data at a local "autocross" event, which was held at a go-kart course. The benefit to this approach is that the course will be exactly the same for pre and post-spring tests. There are disadvantages I am sure. I am hoping that the weather will be comparable for both tests day, but no way to guarantee that.

I will make no changes to the car except for the springs. After getting some post-springs laps recorded, I am going to also record some after a switch from my current street tires to my pending STX setup (255 shaved star specs and 17x9 rims).

At any rate, I am looking forward to getting the springs. I will document the before and after ride height, installation of the springs, and then the performance improvement. Any other things people are looking for, please let me know.
Old 07-21-2009 | 02:23 PM
  #125  
chiketkd's Avatar
Row faster, I hear banjos
iTrader: (5)
 
Joined: Jul 2003
Posts: 2,217
Likes: 0
From: Charlottesville, VA
Originally Posted by Cito
At any rate, I am looking forward to getting the springs. I will document the before and after ride height, installation of the springs, and then the performance improvement. Any other things people are looking for, please let me know.
I'm very interested in any camber gain after installing the springs. I'm hoping I'll be able to get enough camber so that I won't need to get the competition A-arms with the offset bushings. I'm hoping to get -2.5. Currently I can get just under -2.0 on my B-stock car. Ride height pics before and after would be nice, along with some pics of the new springs put side-by-side with the stock springs during the install.

P.S. If you're still a prototype tester, I guess that means altiain backed out?


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Progress Technology Springs



All times are GMT -5. The time now is 10:26 AM.