07-08-2017, 12:27 AM | #3305 | |
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The Following User Says Thank You to RJasonKlein For This Useful Post: | Uplink (07-10-2017) |
07-08-2017, 10:39 AM | #3306 |
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07-08-2017, 05:51 PM | #3307 |
07-09-2017, 11:23 PM | #3308 |
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upgrading sway bar stiffens and induces under/oversteer at one end of the vehicle. but if you upgrade both the front and rear sway bars that yield the same stiffness increase over stock (say +100%), will the under/oversteer characteristic remain unchanged? will total grip remain unchanged? only body roll will be decreased?
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07-10-2017, 12:44 AM | #3309 | |
Because compromise ®
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2/ No. Because you are rolling less at the same speed total grip should increase. This is the point of anti roll bars. 3/ No. The greater the proportion of total roll stiffness that comes from arb the greater the cross-talk. That is, if you put a very stiff arb on soft springs you will get noticeable cross talk. The left side hitting a bump will influence the right side. If you put light arb on stiff springs you will not. For this reason I am not using any arb at the moment but I have been strongly advised to put the oem arb back on with 7k/6k springs. Because compromise.
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My car is completely stock except for all the mods.
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The Following User Says Thank You to Captain Snooze For This Useful Post: | sato (07-10-2017) |
07-17-2017, 05:41 AM | #3310 |
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Thanks dude. Appreciate the advice. I think I'll keep it simple and go coilovers, which seem to be universally regarded as better (faster) than stock setup.
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07-17-2017, 11:22 AM | #3311 | |
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I would be willing to wager you being slower on just about anything in the sub $2000 range. |
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07-17-2017, 04:18 PM | #3312 | |
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I was going to go a set of MCA XRs or a rebuilt set MCA reds and that nifty MCA 'traction mod' device. Cheers for the input Last edited by Purist; 07-17-2017 at 04:42 PM. |
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07-17-2017, 09:36 PM | #3313 |
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@Racecomp Engineering, first off, thanks for everything you do for this forum.
My question is in regard to spring rates. I would like to run a Bilstein B6 and lowering spring combo. Why is that you guys choose to run square spring rates on the Yellows and Tarmacs? Given the lower than front motion ratio of the rear suspension, wouldn't it be better to have higher rates out back compared to the front? A lower effective spring rate in the rear would cause understeer, correct? In maximizing cornering grip and overall handling, isn't the goal to maximize front end grip (lower spring rate up front compared to the rear) so that you can "grip through the turn" and provide maximum lateral G? I am learning the finer points of suspension tuning and want to make sure the money I invest results in maximum performance. Thanks! |
The Following User Says Thank You to ApexEight For This Useful Post: | strat61caster (07-17-2017) |
07-17-2017, 09:46 PM | #3314 |
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FWIW, I bought my friend's RCE T2s a few months ago. After four days on track with them I think I want to replace the 400 pound springs in the rear with 500 pound springs. Even with 3.4* of camber up front and 2.4* in the back I just can't seem to get the car to rotate like I want. On the first couple laps of a session I can tell the front end doesn't grip quite as much as I'd like. After a few laps the driver's front tire just overheats and the car starts to understeer significantly. I feel like I could drop a second on a 1:50 lap.
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The Following User Says Thank You to Pat For This Useful Post: | ApexEight (07-17-2017) |
07-18-2017, 10:47 AM | #3315 | |
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- andrew |
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07-18-2017, 10:47 AM | #3316 | |
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We also looked at suspension geometry during body roll in the front vs. rear in terms of dynamic alignment changes and roll center. Most street cars running lowering springs aren't running a ton of front camber, so a firmer front helps make the most of what you have. For coilovers with stiffer spring rates that are kept more flat in a corner, rear biased spring rates can work well and we do offer that as an option. The default is even rates as we feel that is a good way to go for MOST drivers. - Andrew |
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07-18-2017, 11:49 PM | #3317 |
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What would cause the driver side front tire to wear out A LOT faster on the outside compared to all the other 3 on the track. Recently went to Shannonville (Canada, Ontario) and the track has a lot of right turns. My current alignemt is Front -3.3 / Rear -2.5. Running 245/40/17 RE71R on 17x9. Trying to correct my setup before I buy a new set of tires.
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07-19-2017, 12:28 AM | #3318 |
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How about rotating tires to even out wear? Though mentioned "A LOT" marks possibility of some issue too.
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