06-30-2013, 06:27 PM | #43 | |
corner barstool sitter
Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 6,990
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I'll suggest progressives when lowering and ride quality is identified as a priority over hardcore handling (as appears to be the situation in Criag's case), and dual-rate springs don't have to be bad if the only reason for the soft rate is to keep the springs from falling out of the perches at full droop (and the closely spaced coils remain closed up over most of the operating range of spring length). Too bad that linear rate "big" springs with minimal 'drop' are only a little more common than hen's teeth. But if you can find linear "lowering" springs of acceptable rate and are willing to find or work up some separate and secure means of resetting the ride height for less 'drop' than those springs normally provide, you just might get close enough to custom-wound springs in terms of function. Norm |
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06-30-2013, 07:56 PM | #44 |
2013 Camaro SS1LECTSVZ28
Drives: 2013 AGM 1SS/1LE Join Date: Nov 2012
Location: Suburbs of Detroit, MI
Posts: 2,440
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I ran the car today again at the track, this time Gingerman. At this point I need a better seat more than I need new springs .
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06-30-2013, 10:35 PM | #45 |
Drives: 1LE , 1SS , NPP Join Date: May 2013
Location: calif.
Posts: 274
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Hahahaha sound like you had fun day . Hope the car work well for you.
AT this point in time my Dad who 93 has Alzheimer's so I go to work and watch dad on the weekends to give my Mom a break but at some point time I will be able to do stuff again . |
07-01-2013, 06:18 AM | #46 | |
MikeNoMaro
Drives: A 2016 Challenger R/T M6 STP Join Date: Sep 2009
Location: America
Posts: 2,375
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There are a few threads about it ... let us know in a new thread about your plan & actions.
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Track Day Videos: http://www.youtube.com/user/mrgoodman2000/videos Built #83817, Born January 18th, Christened June 11th 2010, Stolen October 3rd 2016. |
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07-02-2013, 09:01 PM | #47 | |
Drives: Camaro Justice Join Date: Jun 2007
Location: Virginia
Posts: 20,174
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You are putting a lot of thought into this. Are you trying to maintain the OE spring rte ratio front to rear? |
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07-02-2013, 09:36 PM | #48 |
Drives: 1LE , 1SS , NPP Join Date: May 2013
Location: calif.
Posts: 274
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JusticePete
I know what I would like, be a linear rate spring with the same rate as the stock spring but lower the back of the car 1/2 inch to even out the ride high. I am trying out the ZL1 rear spring right now but the ZL1 spring is a progressive rate spring. |
07-02-2013, 09:39 PM | #49 |
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The new recarapos seats can be retrofitted in. Only question is when they will be available andhow much it will cost to convert.
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Used Racing Brake 2 Peice Rotors for sale:
http://www.camaro5.com/forums/showthread.php?t=344754 Summit White 2014 2SS 1LE Recaros, NPP exhaust, Nav 2010 2SS A6 - sold. |
07-02-2013, 10:01 PM | #50 | |
Drives: Camaro Justice Join Date: Jun 2007
Location: Virginia
Posts: 20,174
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In all of our track experience with the 5th Gen we have found that matching front and rear coil rates deliver the best handling. Our L/28 is running 12kg coils front and rear. Our lowering coils are not that aggressive to preserve ride quality. I have been considering a change to our lowering coil spring rates, but haven't pulled the trigger. There should be an OE upgrade around the corner with Z/28 coils. The 1LE difference makers are foundational bushes and a rear bar upgrade. Normally we would do foundational bushes, lowering coils and then bars, but the 1LE responds exceptionally well to bushes and rear bar. We have a number of 1LEs on lowering coils along with ZL1s with very satisfied owners. I believe the 32mm rear bar with the OE 27mm front delivers a greater performance increase than lowering coils. |
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07-02-2013, 10:05 PM | #51 | |
2013 Camaro SS1LECTSVZ28
Drives: 2013 AGM 1SS/1LE Join Date: Nov 2012
Location: Suburbs of Detroit, MI
Posts: 2,440
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Quote:
What I am looking for is an increased spring rate and a slightly lower ride height. I don't want to change sways or put coilovers on it yet. I know there is something in there about having my cake and eating it too. After two track outing I have had issues with the right rear tires spinning on corner exit is certain turns. My understanding is that by increasing the left front spring rate (both front) that will inturn help keep the right rear planted (???) Feel free to correct me if I am wrong or make a suggestion. Matt
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07-02-2013, 10:13 PM | #52 | |
Drives: Camaro Justice Join Date: Jun 2007
Location: Virginia
Posts: 20,174
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Quote:
We like to raise the front coil rate considerably to control weight transfer. We run as high as 670 pounds, 12kg. To your situation, is the right rear spinning when it is on the inside or outside of the turn? Are you on stock sway bars? Can you post your alignment specs? |
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07-02-2013, 10:45 PM | #53 | |
2013 Camaro SS1LECTSVZ28
Drives: 2013 AGM 1SS/1LE Join Date: Nov 2012
Location: Suburbs of Detroit, MI
Posts: 2,440
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Quote:
Right rear when it is on the inside of the turn. (right turn) Specifically turn 2 at Gingerman on corner exit if I try to use second gear it will spin the inside (pass rr) tire. If I run out of the corner in 3rd gear it is fine. Same thing happened at Grattan exiting the last right hander from the esses. I spoke with a GM engineer that has RWD platform experience (Camaro 1LE) about it and he mentioned upgrading to a ZL1 diff....but those are changes for down the road... Yes, still 100% stock suspension...springs, sways, bushings .... Alignment Specs are in the picture. Alignment recommendations/specs came from a another engineer that had experience with the 1LE ....I could have added more camber in the front but chose a setting I could live with on and off the track. When you say control weight transfer can I assume that translates into increased traction? I have the mind set that when the front rate is increased more than the rear this induces under steer. Does that still hold true or are you increasing the rear as well? Thanks, Matt
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Last edited by Dropspeed; 07-02-2013 at 10:56 PM. |
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07-02-2013, 10:53 PM | #54 |
Drives: 1LE , 1SS , NPP Join Date: May 2013
Location: calif.
Posts: 274
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Well I am not going lower the front of car, I drive the car to much . So I stick with the springs I have now . first I need enough driving skill to able use up the car chassis before I think about doing a bushing change but thank you for your time .
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07-02-2013, 11:18 PM | #55 | |
Drives: Camaro Justice Join Date: Jun 2007
Location: Virginia
Posts: 20,174
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Quote:
This is splitting hairs, but it is interesting that the right rear toe is in a bit more than the left. I doubt that is causing the issue. I know Gingerman well. It is a technically challenging test of driver suspension and brakes. Bruce Raymond's (Raymond's Performance) 1LE with heads, cam (530 RWHP) and ZL1 front calipers was tested at Putnam Park with OE suspension. It ran incredibly well with no sign of differential slippage under high cornering loads. We ran the same 1LE at Road America with foundational bushes, Supercars and our 32mm rear bar. According to Bruce, the car was perfect and he wouldn't change a thing. What are your tire pressures hot? Last edited by JusticePete; 07-02-2013 at 11:55 PM. |
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07-02-2013, 11:37 PM | #56 | |
Drives: Camaro Justice Join Date: Jun 2007
Location: Virginia
Posts: 20,174
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The hydraulically damped radius arm bushes are the same as they were at the start of the 5th Gen run. Compression and decompression of the radius bushes allows a wide range of dynamic caster change. Way back when, there was a Grand Am prototype built at the Milford Proving Grounds. The engineers working on that project asked Pedders USA to produce a steel jacketed urethane bush to replace the OE bushes. We did exactly what they requested and this gorgeous Camaro Grand Am Prototype was shown at SEMA 2008 with Pedders radius bushes and a few more we won't discuss here. We have assisted the experts at Milford on other interesting Camaros including the on track Camaro Pace Cars. I get to do some interesting things in my business. Installing Pedders parts at the Milford Proving Grounds has to be #1 or #1a. There is no doubt that the 1LE is an excellent well mannered automobile. I know and have tremendous respect for the engineers that are part of the Camaro TEAM. There is also no doubt that anyone who drives a 1LE will become a more confident, faster driver with a more predictable 1LE. Foundational bushes are the key. The rear end is more predictable. The steering is more on center. Predictability. Repeatability. Stability. Music to the ear of enthusiast drivers at all levels. |
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