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標題: Camber link孔位一問 [打印本頁]

作者: kelvinayhh 時間: 2015-10-14 02:28
標題: Camber link孔位一問
其實咁多個孔，set唔同長度又有乜分别？
唔太明個原理
Thx

作者: liongoryeah 時間: 2015-10-14 09:51
camber link長短係控制架車roll嘅時候，改變camber角嘅多同少，link短改變多，link長改變少d

作者: kelvinayhh 時間: 2015-10-14 17:36

liongoryeah 發表於 2015-10-14 09:51
camber link長短係控制架車roll嘅時候，改變camber角嘅多同少，link短改變多，link長改變少d ...

頭尾反應會有乜分别？
墊介子又係咩原理？
Thx

作者: sfdo 時間: 2015-10-14 21:17

kelvinayhh 發表於 2015-10-14 17:36
頭尾反應會有乜分别？
墊介子又係咩原理？
Thx

車架下壓，
從車頭望，左右 Camber link 越 "V" ，Camber 增得越多，
左右 Camber link 越接近水平，Camber 增得小D，

仲有用墊介 set Roll Center ，不過我都唔太明....

作者: liongoryeah 時間: 2015-10-15 01:11
本帖最後由 liongoryeah 於 2015-10-15 13:32 編輯

kelvinayhh 發表於 2015-10-14 17:36
頭尾反應會有乜分别？
墊介子又係咩原理？
Thx

加減介子會改變roll center，牛角位越多介子，roll center會一越低，架車越roll

作者: liongoryeah 時間: 2015-10-15 01:13
本帖最後由 liongoryeah 於 2015-10-15 13:33 編輯

kelvinayhh 發表於 2015-10-14 17:36
頭尾反應會有乜分别？
墊介子又係咩原理？
Thx

加減介子一會改變roll center，牛角位越多介子，roll center會越低，架車越roll

作者: RGear 時間: 2015-10-15 11:28
http://www.hudy.net/xhudy/produc ... c73a17fad4b144bada6

作者: kelvinayhh 時間: 2015-10-15 22:37

liongoryeah 發表於 2015-10-15 01:13
加減介子一會改變roll center，牛角位越多介子，roll center會越低，架車越roll

...

thx u lung gor

作者: arto6 時間: 2015-10-15 23:20
小弟嘅個人感覺如下：
近look果邊越高，架車側嘅開頭，會較咬
近look果邊越低，架車側嘅開頭，會無咁咬
近車身果邊越高，架車側到最深，會無咁咬
近車身果邊越低，架車側到最深，會較咬
尾camber link越短，架車覆身快D
頭camber link長度我技不如，未feel到
再者，其實架車可能已經set到好咬，但呔已經overheat, 變得又推又甩

作者: shungyan 時間: 2015-10-15 23:43
Whatever the length and camber link's position are, the effect is change of roll-centre (front and rear form the roll-axis) and gain of camber angle. How the car will be, you need to feel by yourself. There is a lot other factors affecting the car, any written description is for your reference only.

作者: arvin 時間: 2015-10-16 11:19
這是來自Alexander Hagberg 的

Chassis roll can be controlled by altering the position of the roll center. This is done by small changes in the suspension geometry: upper link and lower arms length and positions, as well as widening or narrowing of the track width. The changes will have the following effect:

Raise upper link on the outside: the roll center is raised.
Raise upper link on the inside: the roll center is lowered.
Raise the link on both points: the roll center is lowered, albeit slightly.
Widen track width: raises the roll center.

Longer upper link: the roll center is lowered. The roll center itself will go lower throughout the roll. Whereas, when the upper link is shortened, the height of the roll center has less of a change.

Roll center affects and is affected by many other areas of the car such as camber, shocks, shock springs, camber gain etc. It is therefore important to understand that this change in set-up cannot be considered as an effect of its own.

The rule of thumb:

Higher front roll center:
Decreases chassis roll at the front end of the car. It will make the car under steer off-power. The car will have better on-power steering as less weight is transferred to the rear wheels. Will make the front tires overheat less. The car will have a quicker initial response.

Lower front roll center:
Increases chassis roll at the front end of the car. It will make the car have less on-power steering. The turn-in will be better (corner entry steering) off power. The car will absorb bumps better. The car will have a slower initial response.

Higher rear roll center:
Decreases chassis roll at the rear end of the car. On-power steering will be decreased. Off-power steering (turn-in) will be increased as more weight will stay on the front wheels at corner entry.

Lower rear roll center:
Increases the chassis roll at the rear end of the car. The on-power steering will be increased. The corner entry steering will however be decreased.

Alex’s hot tip:

The quickest and most powerful way to change the roll center is to alter the position of the upper links. On most modern touring cars, this can be done by mounting the link into one of a few different holes in the upper bulkhead clamps. Usually there are three different positions which allows for different lengths of the link to be used. On the upright of the rear suspension, there are usually 2 holes available to allow for a longer or shorter link in the rear suspension. The position of the link can be changed by the use of shims underneath its mounting points. My tip is to start with the kit set-up. Take note of the handling of your car at the different parts of the corner: entry, mid-corner, and exit. Then use the above instructions to determine which adjustment is needed to suit your needs. This is an extremely sensitive tuning tool which can be fine tuned for each track and condition.

作者: liongoryeah 時間: 2015-10-16 18:27

arvin 發表於 2015-10-16 11:19
這是來自Alexander Hagberg 的

Chassis roll can be controlled by altering the position of the roll ce ...

Thx for share!

作者: kelvinayhh 時間: 2015-10-16 21:05
我慢慢消化下，多謝各位ching

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