值得学习！:em07: :em07:
LZ别听别人乱说了。。。。你DIY的非常好。关键漂亮啊！。。。关于底盘的扭动性。。更本不是问题。。车架是有2楼板的。对于车架来说对扭动性的影响关键在与结构。。这个改起来很方便的
底盘硬避震要软。。软了弄硬点。。这就是避震的用处啊。
问下这次升级你用了多少MONEY？你的C板多少钱？
大哥:em29: :em29: :em29: 我的车也是无限的,教我怎么改装,认你做师傅,你太强了:em29:
无限的车！本人感觉很好！没别人说的那么烂！
原帖由 azure 于 2007-3-16 06:04 发表
LZ别听别人乱说了。。。。你DIY的非常好。关键漂亮啊！。。。关于底盘的扭动性。。更本不是问题。。车架是有2楼板的。对于车架来说对扭动性的影响关键在与结构。。这个改起来很方便的
底盘硬避震要软。。软了弄 ...
关于这位仁兄对减震和底盘的讨论偶还真是没有听懂，如果可以的话希望可以解释一下,如果不行的话希望您也不要误导了别人
樓主創意可加..........................
原帖由 lin极限 于 2007-3-19 00:24 发表
我看这里需要材料学,结构学,热学,力学,电学,空气动力学,机械加工(制造,工艺),化学,美学......方面的专家来当顾问了....顺便再找一个法拉利的工程师.....:em37:
其实也不用啦，呵呵，我可以公开一份英文般的设定不完全手册，算是抛砖引玉一下了。
ACKERMAN
LESS ANGLE - more agressive steering = good for tight corners or technical track. less ackerman will cause the inside wheel to gain less camber than the outside wheel.
MORE ANGLE (inside wheel is turning in more compared to the outside wheel) - less agressive = good for wide open corners and sweepers. Smooth, predictable steering. More ackerman will make the inside tire gain more camber than the outside. Adding ackerman to a car that has caster will give the car more steering especially on turn in. Can make car traction roll easier.
CASTER
MORE VERTICAL - more off-power steering into corner / less on-power steering out of corner. Can reduce traction rolling on high grip tracks. Increased suspension efficiency. Decreased wheel centering. Need less camber (less camber change).
MORE ANGLED - less off-power steering into corner / more on-power steering out of corner. Increased mid-corner control. better mid-corner control. Typically suits large, open, hi-speed tracks. Generally, more caster = more steering. Decreased suspension efficiency. Increased wheel centering. Decreased straight line stability. Need more camber (more camber change).
CAMBER
FRONT - More Negative (1-2 deg) - increase steering. Need more with steerper caster. Need less with vertical caster.
REAR - More Negative (.5-3 deg) - increase stability and traction in corners but decrease hi-speed stability.
TOE
FRONT:
IN - car reacts slower but has more steering from middle and exit of turn. Smoothes out steering. Easier driving car.
OUT - turn into corner better, but less middle and exit
REAR:
IN - 1 deg goes long way. Stabilizes car. More toe = more rear end sticks going into and coming out of turns. Car turns in more due to drag brake effect.
INBOARD PIN ANGLE
FRONT:
DECREASE (0 deg) - results in more stability by decreasing steering into the turn
INCREASE (+x deg) - more aggressive feel to steering
REAR:
IN - wt xfers to front end easily. Increases off-power steering and decreases on-power steering (more forward traction). Versus toe-in@hub which provides less wt xfer so provides less initial steering but more on-power steering (less forward traction).
ROLL CENTER
FRONT:
HIGHER roll center = more on-power steering and less off-power steering. car less responsive.
LOWER roll center = more low-speed steering (more camber change) - better into corner, less high-speed steering. More roll.
REAR:
HIGHER roll center = more steering as long as front roll center is lower.
LOWER roll center = less steering as long as front roll center is lower. More roll.
Low speed tracks: lower roll center (front and rear) to get more roll out of
chassis High speed tracks: higher roll center to keep car flatter through turns
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Roll slope - The higher the front is the less it will froce the rear to roll so less steering and flatter cornering.
- More steering entering and less change in handling coming off. With the front wanting to roll less than before more weight will stay on the front.
- Car is more responsive because it isn't rolling as far. Takes less time to come back to center after a turn.
- Causes car to roll more into turn instead of out of turn.
- Less steering entering and more steering on power coming off. The front wants to roll more forcing weight transfer to the outside rear. The car will drive off the outside rear on power giving an abrupt gain in steering.
- Combined with stiffer springs (and damping) up front, and softer ones in the rear. This makes for a very stable car: it will turn in sharply at first, because of the stiff springs up front, but then, it will understeer a little, because with the stiff springs and heavy damping up front, it takes some time to transfer the weight onto the outside front tire. This happens a lot faster in the rear. But eventually, when the weight is fully transferred, the car will steer very well.
- The rear will try to roll the front more off power loading the outside front more giving ok turn in. On power the car will try to drive initially off the outside front but will transition to a hard push coming off because the rear bite will be more balanced than the front.
- Car may push badly on power and spin-out off power
CAMBER LINK
more PARALLEL - lower roll center and increase roll of the car. More traction at that end of the car. Less camber change.
more ANGLED - raise roll center and less roll of the car. Less traction at that end of the car. Can use softer shock settings. More camber change.
SHORTER - less traction. Car rolls less. Reacts quicker initially and less overall.
REAR: more steering (but can cause rear to lift)
FRONT: less steering
LONGER - more traction. Car rolls more to outer edge of tire and gives you more side bite. Reacts slower initially but will react more.
REAR: less steering - need more camber
FRONT: more steering
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Overall upper a-arm height - raising it will make the car a bit more sensitive but actually stay flatter in the corner. Lowering it gives it more roll/steering in the center of the corner but a less twitchy feel....
LOWER ARM
HIGHER - higher roll center, less roll. Can use softer springs/oil.
LOWER - lower roll center, more roll. Typically used on high traction. Need stiffer springs/oil. Adds laziness to car (reduces traction roll).
SHOCKS POSITION
STANDING UP - less roll through the corners with more stability. "stiffer overall"
LEANING IN - more forward bite and make the springs more progressive through the corner. Which means the initial cut will be softer and it will stiffen up as you go through the corner and lean into it. Overall suspension softens up as you lean shocks in. Best used with long parallel links. "Softer overall"
FRONT:
IN - smoother transition entering turns & improve consistency. BUT less total steering and slower reaction. More steering in hi-speed corners.
OUT - increases responsiveness and gives more total steering. Increase forward traction and on-power steering. May have to soften springs to smooth out the reaction.
REAR:
IN - frees up back end of car. Easier rotation in turn. Fast flowing tracks (helps w/corner speed).
OUT - more forward traction but slows initial reaction in the turn w/a more abrupt rear rotation. For tight tracks.
front in more than rear - steering feels very smooth. A little more mid steering. Rear end can jitter in turns.
Rear in more than front - aggressive turning in, but car overall has less steering. Turn radius not very tight.
PISTONS
We use the smaller pistions and lighter oil to keep the car from dumping over. Usually, if you go from a #2 to a #3 in the rear of a TC it will - go over a bump a little worse, change directions much quicker and usually gives a little more steering.
SPRINGS
FRONT
Stiffer - less front traction, less steering. Harder to get into turn, turn radius is bigger, and lot less steering exiting corner. Use on very hi-grip tracks to reduce steering.
Softer - more steering - esp at mid and exit. However, too soft and car can hook and spin.
REAR
Stiffer - car has more steering in mid nd exit - esp in long, hi-speed corners.
Softer - car has more rear traction in turns and while accelerating.
DAMPING
HEAVIER - more stable car, hadles smoother, but change direction slower
THINNER - car reacts quicker
Heavier front/Softer Rear - turn radius is wider but smoother. Car doesn't hook suddently. Car easier to drive & hi-speed steering is smoother.
Softer front/Header Rear - steering reacts quicker. More and better low speed steering.
SHOCK TOWER HEIGHT
RAISED - less camber gain.
DROOP
FRONT:
increasing: smooth car out going into turn (less in) & gain steering on exit
decreasing: initiate turn quicker (more in) but less steering out. more responsive feel.
REAR:
increasing: gain more side bite and traction - less steering.
decreasing: more responsive & less side bite - more steering.
Less front, more rear: car changes direction faster. turns in very well, but can lose front traction halfway through turn. allows rear of car to rise more during decelration which transfers more weight to front.
More front, less rear: car bakes better. rear traction feels consistent. 6 front and 4 rear droop seems more like a carpet setup. Typical TC split of 4/2 or 5/3. If you wanted to pivot better then you could do 5/4 droop.
WHEELBASE
Adjusting wheelbase at an end of car affects traction at that end (ie: rear shorter: more rear traction, front shorter: more front traction)
SHORTER: nimble and good in tight turns. Increased steering response - tighter, more technical tracks.
LONGER: more stable, better in wide, high-speed turns. good on wide-open tracks. Adds stability and slows down initial reaction.
TRACK WIDTH
wide front, narrow rear - more steering
narrow front, wide rear - less steering
front KICK-UP/ANTI-DIVE
INCREASE kick-up: better through bumps, more forgiving to drive. smooth car out on turn-in and thru corner. smooth car out on high traction surfaces.
DESCREASE kick-up/anti-dive (negative kick-up): turn in more,. front dives less while braking and lifts less while accelerating. a little more on-power steering.
REAR ANTI-SQUAT
MORE - increases on-power steering and forward traction. stiffens rear suspension when accelerating. car can be loose entering corners (more steering while braking). car more sensitive to throttle input. Easier car rotation. Less side-bite.
LESS - more stable entering corners. reduces on power steering. easer to drive in low-grip situations.
ANTI-ROLL BAR
FRONT - reduces low speed steering. Larger turn radius, but smoother & consistent. Reduces hooking by reducing front end roll. More rear traction in turns.
REAR - gives more steering. Car steers tighter, also at low speeds. Can make sliding easier on smooth track.
OVER-DRIVE/UNDER-DRIVE
OVERDRIVE - front tires turn faster - less off-power steering, more steering exiting turn
UNDERDRIVE - front tires turn slower - more steering entering, less steering exiting
DIFF HEIGHT
HIGH - car will stay flatter and have more responsive feel.
LOW - car will roll more and keep car in turn longer, increasing on-power steering
Low front diff, high rear - maximum total steering
High front diff, low rear - lowest total steering
Low front, low rear - less overall traction
High front, high rear - more overall traction
BATTERY POSITION
FORWARD - more steering and less rear traction
BACK - increase traction and diminish steering slightly
DIFF VS ONE-WAY
DIFF - most consistent feel and more off-power steering while sacrificing some on-power steering
ONE-WAY - high traction asphalt/carpet with no hairpin turns. Greater off-throttle steering and increased acceleration.
CENTER ONE-WAY - increase overall steering off-power
BODY REAR WING
FORWARD or LOWER - less downforce. More steering.
BACK or HIGHER - more downforce. Less steering.
tight track/low speeds - wing mounted forward, use larger wing
high speed sweepers & long straights - wing further back, slightly smaller, and large spill plates. Can trim rear kick-up to help straightaway speed and stability.
NOTE: A wing w/large spill plates and mounted too far back will hinder car from rotating quickly on tight tracks.
BODY POSITION
1/8th of an inch change can make a big difference. More effect on high speed corners.
FORWARD - more steering
BACK - less steering
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