Tein Monoflex - What is your Damping Settings
#1
Tein Monoflex - What is your Damping Settings
Hi everyone,
I currently drive a 03' z with NISMO sway bars and Tein Monoflex coilovers (32-clicks adjustments). I'm using 4 for front and 2 for rear (counting from the softest side). I'm not exactly happy with the cornering stability and performance, especially over uneven road or roads with height differences. Therefore, I'm just wondering what are your settings?
Also, I'd also like to ask whether if the dampening setting is the only adjustments I can make to the coilover besides height. I'm guessing spring rate is predetermined.
My Z is mildly lowered with 18" WORKS Emotion rims, f245/r265 Dunlop Direzza Sport z1. Wheel alignment has just been done with all specification within spec.
Thank you all in advance and sorry for all the noobish questions.
I currently drive a 03' z with NISMO sway bars and Tein Monoflex coilovers (32-clicks adjustments). I'm using 4 for front and 2 for rear (counting from the softest side). I'm not exactly happy with the cornering stability and performance, especially over uneven road or roads with height differences. Therefore, I'm just wondering what are your settings?
Also, I'd also like to ask whether if the dampening setting is the only adjustments I can make to the coilover besides height. I'm guessing spring rate is predetermined.
My Z is mildly lowered with 18" WORKS Emotion rims, f245/r265 Dunlop Direzza Sport z1. Wheel alignment has just been done with all specification within spec.
Thank you all in advance and sorry for all the noobish questions.
#2
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Spring rate is simple, just swap springs, most coilovers can handle a 2kg increase before needed to be revalved. Then you have your damper setting, you also have all your allignment settings that make a huge difference on how the car handles. Also tires, your on star specs? 265/35-18 in the rear? You do understand that lowering the rear of the car 1 inch (do to tire height) changes a lot on the way your suspension performs.
Last edited by terrasmak; 04-24-2011 at 08:48 PM.
#3
I understand that lowering and alignment all contribute to how a car handles, but I want to know what settings are people in this forum using.
#4
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I would move the 265 up front and get a 275/35 for the rear, then work from there.
Most peoples setting will not work for you.
#5
If I move the 265/35 to the front, and get 275/35 for the rear, then keeping the 18" rims I have, wouldn't that mess up the outer diameter of the wheel (also mess up the speedo)?
#6
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Monoflex have only 16 steps for the dampener and going too many "clicks soft" can damage them. I keep mine at 4 from the stiffest in front and very soft in the back (15 clicks back from full clockwise, which is where it hard stops at the firmest setting).
Sway bars have a more significant impact on body roll than the independent suspension settings. You can try various combinations, but a full track set up would entail going to stiffer settings all around. That said I sincerely doubt you want to move to something stiffer than the 14 kg springs that come with the monoflex! Just adjust the sway bar and dampener settings...
Sway bars have a more significant impact on body roll than the independent suspension settings. You can try various combinations, but a full track set up would entail going to stiffer settings all around. That said I sincerely doubt you want to move to something stiffer than the 14 kg springs that come with the monoflex! Just adjust the sway bar and dampener settings...
Last edited by rcdash; 04-25-2011 at 08:12 AM.
#7
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Sorry for the noob questions, but what do you mean by making the rear tire much shorter than the front?
If I move the 265/35 to the front, and get 275/35 for the rear, then keeping the 18" rims I have, wouldn't that mess up the outer diameter of the wheel (also mess up the speedo)?
If I move the 265/35 to the front, and get 275/35 for the rear, then keeping the 18" rims I have, wouldn't that mess up the outer diameter of the wheel (also mess up the speedo)?
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#8
Monoflex have only 16 steps for the dampener and going too many "clicks soft" can damage them. I keep mine at 4 from the stiffest in front and very soft in the back (15 clicks back from full clockwise, which is where it hard stops at the firmest setting).
Sway bars have a more significant impact on body roll than the independent suspension settings. You can try various combinations, but a full track set up would entail going to stiffer settings all around. That said I sincerely doubt you want to move to something stiffer than the 14 kg springs that come with the monoflex! Just adjust the sway bar and dampener settings...
Sway bars have a more significant impact on body roll than the independent suspension settings. You can try various combinations, but a full track set up would entail going to stiffer settings all around. That said I sincerely doubt you want to move to something stiffer than the 14 kg springs that come with the monoflex! Just adjust the sway bar and dampener settings...
I'm not trying to doubt that Monoflex have only 16 steps for the dampener. However, when I try turning it, it can produce 31-32 clicks "clock-to-clock". Can someone explain this to me?
Anyway, I have the Nismo sway bar for both front and rear and I understand that they are non-adjustable. So I'll only have to play around with the damper settings. Please kindly correct me if I'm wrong.
At last, also a big thank you to terrasmak for pointing out that my rear outer diameter is actually out of specification. I didn't know until I dug deep enough into the problem. This is a blessing in disguise, as I just paid a deposit for a set of 19" TE37SL.
#9
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Single adjustable :
Suggested Adjustment Procedure for Auto Cross Use
Adjusting the Compression (Bump) Damping Control
Bump damping controls the unsprung weight of the vehicle (wheels, axles, etc.). It controls the upward movement of the suspension such as hitting a bump in the track. It should not be used to control the downward movement of the vehicle when it encounters dips. Also, it should not be used to control roll or bottoming.
Depending on the vehicle, the ideal bump setting can occur at any point within the adjustment range. This setting will be reached when "side-hop" or "walking" in a bumpy turn is minimal and the ride is not uncomfortably harsh. At any point other than this ideal setting, the "side-hopping" condition will be more pronounced and the ride may be too harsh.
1. Set all four dampers on minimum bump and minimum rebound settings. Drive one or two laps to get the feel of the car.
NOTE: When driving the car during the bump adjustment phase, disregard body lean or roll and concentrate solely on how the car feels over bumps. Also, try to notice if the car "walks" or "side-hops" on a rough turn. Increase bump adjustment clockwise 3 clicks on all four dampers. Drive the car one or two laps. Repeat this step until a point is reached where the car starts to feel hard over bumpy surfaces. Back off the bump adjustment two clicks. The bump control is now set. NOTE:Â The back off point will likely be reached sooner on one end of the vehicle than the other. If this occurs, keep increasing the bump on the soft end until it too feels too hard. Then back that side off two clicks. The bump control is now set.
Adjusting the Rebound Damping Control
Once you have found what you feel to be the best bump setting on all four wheels, you are now ready to proceed with adjusting the rebound damping. The rebound damping controls the transitional roll (lean) as when entering a turn. It does not limit the total amount of roll; it does limit how fast this total roll angle is achieved. How much the vehicle actually leans is determined by other things such as spring rate, sway bars, roll center heights, etc.
It should be noted that too much rebound damping on either end of the vehicle will cause an initial loss of lateral acceleration (cornering power) at that end which will cause the vehicle to oversteer or understeer excessively when entering a turn. Too much rebound control in relation to spring rate will cause a condition known as "jacking down." This is a condition where, after hitting a bump and compressing the spring, the damper does not allow the spring to return to a neutral position before the next bump is encountered. This repeats with each subsequent bump until the car is actually lowered onto the bump stops. Contact with the bump stops causes a drastic increase in roll stiffness. If this condition occurs on the front, the car will understeer; if it occurs on the rear, the car will oversteer.
1. 1. With the rebound set on full soft and the bump control set from your testing, drive the car one or two laps, paying attention to how the car rolls when entering a turn.
2. 2. Increase rebound damping three sweeps or 3/4 of a turn on all four dampers and drive the car one or two laps. Repeat this step until the car enters the turns smoothly (no drastic attitude changes) and without leaning excessively. Any increase in the rebound stiffness beyond this point is unnecessary and may in fact be detrimental.
EXCEPTION: It may be desirable to have a car that assumes an oversteering or understeering attitude when entering a turn. This preference, of course, will vary from one driver to another depending on the individual driving style.
Suggested Adjustment Procedure for Auto Cross Use
Adjusting the Compression (Bump) Damping Control
Bump damping controls the unsprung weight of the vehicle (wheels, axles, etc.). It controls the upward movement of the suspension such as hitting a bump in the track. It should not be used to control the downward movement of the vehicle when it encounters dips. Also, it should not be used to control roll or bottoming.
Depending on the vehicle, the ideal bump setting can occur at any point within the adjustment range. This setting will be reached when "side-hop" or "walking" in a bumpy turn is minimal and the ride is not uncomfortably harsh. At any point other than this ideal setting, the "side-hopping" condition will be more pronounced and the ride may be too harsh.
1. Set all four dampers on minimum bump and minimum rebound settings. Drive one or two laps to get the feel of the car.
NOTE: When driving the car during the bump adjustment phase, disregard body lean or roll and concentrate solely on how the car feels over bumps. Also, try to notice if the car "walks" or "side-hops" on a rough turn. Increase bump adjustment clockwise 3 clicks on all four dampers. Drive the car one or two laps. Repeat this step until a point is reached where the car starts to feel hard over bumpy surfaces. Back off the bump adjustment two clicks. The bump control is now set. NOTE:Â The back off point will likely be reached sooner on one end of the vehicle than the other. If this occurs, keep increasing the bump on the soft end until it too feels too hard. Then back that side off two clicks. The bump control is now set.
Adjusting the Rebound Damping Control
Once you have found what you feel to be the best bump setting on all four wheels, you are now ready to proceed with adjusting the rebound damping. The rebound damping controls the transitional roll (lean) as when entering a turn. It does not limit the total amount of roll; it does limit how fast this total roll angle is achieved. How much the vehicle actually leans is determined by other things such as spring rate, sway bars, roll center heights, etc.
It should be noted that too much rebound damping on either end of the vehicle will cause an initial loss of lateral acceleration (cornering power) at that end which will cause the vehicle to oversteer or understeer excessively when entering a turn. Too much rebound control in relation to spring rate will cause a condition known as "jacking down." This is a condition where, after hitting a bump and compressing the spring, the damper does not allow the spring to return to a neutral position before the next bump is encountered. This repeats with each subsequent bump until the car is actually lowered onto the bump stops. Contact with the bump stops causes a drastic increase in roll stiffness. If this condition occurs on the front, the car will understeer; if it occurs on the rear, the car will oversteer.
1. 1. With the rebound set on full soft and the bump control set from your testing, drive the car one or two laps, paying attention to how the car rolls when entering a turn.
2. 2. Increase rebound damping three sweeps or 3/4 of a turn on all four dampers and drive the car one or two laps. Repeat this step until the car enters the turns smoothly (no drastic attitude changes) and without leaning excessively. Any increase in the rebound stiffness beyond this point is unnecessary and may in fact be detrimental.
EXCEPTION: It may be desirable to have a car that assumes an oversteering or understeering attitude when entering a turn. This preference, of course, will vary from one driver to another depending on the individual driving style.
#11
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With EDFC, (0 stiffest - 16 softest)
DD I set mine 10 front, 9 rear.
Spirited Driving I set it 7 front, 6 rear.
Crazy over the top (track), 3 front, 2 rear.
I have never adjusted my monoflex manually.
DD I set mine 10 front, 9 rear.
Spirited Driving I set it 7 front, 6 rear.
Crazy over the top (track), 3 front, 2 rear.
I have never adjusted my monoflex manually.
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