07-02-2013, 11:51 PM | #57 | |
Drives: Camaro Justice Join Date: Jun 2007
Location: Virginia
Posts: 20,174
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A 5th Gen without understeer wouldn't be a 5th gen We feel the 5th Gen is under-sprung up front from the factory. As balanced as the 1LE is, when you stand on the brakes the nose dives and the tail lifts. When you accelerate the nose lifts and the rear squats. A 1LE with driver and fuel hits the track at two tons. That is a lot of weight transfer. Too much transfer for any front wheel and tire that will fit in the fender well. In a race car, we would default to a muscle car like rake with the thought that the car is light enough and balanced enough to benefit from the rake biased weight transfer. That isn't the 5th Gen. We find that increasing the front spring rate, lowering the rear in relation to the front, reduces understeer by controlling weight transfer and not overloading the front tires. There is a limit to the rate increase before it becomes a negative. That is why the 12kg front and rear is working so well for us and 14kg coils do not. Keep in mind that the front spring rate is the front spring rate in a virtual pivot front strut while there is a motion ratio at work in the rear that reduces rate at the wheel, but you already knew that. |
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07-03-2013, 12:08 AM | #58 |
Drives: 1LE , 1SS , NPP Join Date: May 2013
Location: calif.
Posts: 274
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JusticePete
"The sub-frame bush inserts or replacements eliminate vertical and lateral movement in the IRS sub-frame. The OE engineers have made several changes to these four bushes. the first change was to fill the deep Noise Vibration and Harshness voids on the 10/11 bushes. The ZL1 had further upgrades and so did the 1LE. There is still sufficient movement to create dynamic alignment changes in a range wide enough for the driver to experience rear end steer a.k.a. loose rear end." Humm lest just say there a road down in Mexico with a left hand turn I go through at 100 MPH in my old mustang and when I trying doing the same thing with the 1LE the back of the car feels loose . The mustang was flat ass planted it also had a torsion Diff with a 4:1 TBR ratios . Looks like I all ready ran into this bushing problem . I think I take this over to the chassis part of the forum read your threads and look into seeing what involved in replacing the bushing thank you for your time . |
07-08-2013, 02:35 PM | #59 | |
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:
Sorry took a little Hiatus from the site..... In the post above you mentioned a possibility of increase the spring rates of the Pedders lowering springs. Is this something that will come to fruition soon or is there an extended period of time before this may happen? Thanks, Matt
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07-09-2013, 03:01 AM | #60 | |
Drives: 2013 1LE Join Date: Feb 2012
Location: DMV
Posts: 1,548
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Quote:
I don't want to go too low and scrape my splitter everywhere. These Hawaii roads suck. But I would like to close the gap and gain a little extra spring rate. Planning to hit some auto cross events.
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It's a Dingledarm. It's there to dampen side fumbling. If your marzelvanes fumble too much they can cause total protonic reversal. It gets ugly from there. This is really the biggest problem with the new Camaro. That and the tri-pronged blivot.
Delivered 21 Jan 2013 |
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07-09-2013, 12:08 PM | #61 | ||
Drives: Camaro Justice Join Date: Jun 2007
Location: Virginia
Posts: 20,174
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07-09-2013, 03:17 PM | #62 |
2013 Camaro SS1LECTSVZ28
Drives: 2013 AGM 1SS/1LE Join Date: Nov 2012
Location: Suburbs of Detroit, MI
Posts: 2,440
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Maybe this is too direct for the forum and if so we can talk off line
From this dicussion will I be happy with an off the shelf Pedders lowering spring combination and will it perform the way I want it too on the track? (Knowing I don't want coilovers yet) If so would which rear springs would you recommend based on my "wants"? Thanks, Matt
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07-09-2013, 03:22 PM | #63 | |
Drives: Camaro Justice Join Date: Jun 2007
Location: Virginia
Posts: 20,174
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Quote:
If you did full sub and radius bushes with our 32mm rear bar I think you would be far happier than with a set of lowering coils. If you want to try something we could run a session with just the Pedders rears 220033 to see what you think. |
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07-09-2013, 04:29 PM | #64 | ||
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:
Quote:
Thank you, Matt
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09-29-2015, 04:04 PM | #65 |
Drives: 14 1LE Join Date: Mar 2013
Location: Spokane, WA
Posts: 1,567
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I want to bring this thread back up because I, like Dropspeed at the time, want to increase my spring rate but not upset the ballance I currently have in the car. The car is running stock suspension with the addition of a 32mm rear sway. It does good, its fairly neutral set up but I push the car hard enought where I get a lot of weight moving to the front under braking and I need it to stay flatter though the corners. I know the best situation would be coilovers or Z28 but I don't have the $$ to go that direction at the moment.
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LMS Engineering
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