- #1
racool
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what would be the angle of a arms and how it is to be determined
Angle made by arms with horizontal
- Thread starter racool
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- Angle Horizontal
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Discussion Overview
The discussion revolves around the angles made by A-arms in the context of Formula 1 car suspension systems, specifically how these angles relate to the horizontal plane and their implications for vehicle performance. Participants explore the factors influencing these angles and their design considerations.
Discussion Character
- Technical explanation
- Debate/contested
- Experimental/applied
Main Points Raised
- One participant initially asks about the angle of A-arms and how it is determined, leaving the question somewhat ambiguous.
- Another participant requests clarification on whether the discussion pertains to human arms or automotive components, suggesting that specific terminology would improve understanding.
- A later post clarifies that the discussion is focused on A-arms in F1 cars, specifically regarding their angles in relation to the horizontal and factors influencing these angles, such as rim diameter.
- One participant expresses that the angle of the A-arms to the ground may not be as critical as the angle of the tire to the road, indicating a potential area of disagreement regarding what is most important for performance.
- Another participant emphasizes the importance of the relative angle between the top and bottom A-arms, noting that this affects the camber of the wheels as the suspension moves, which is designed to counteract chassis lean during turns.
Areas of Agreement / Disagreement
Participants exhibit some disagreement regarding the critical angles to consider in suspension design, with differing opinions on the importance of the A-arm angle versus the tire angle. The discussion remains unresolved on which angle is more significant for performance.
Contextual Notes
The discussion includes assumptions about the design of A-arms and their relationship to vehicle dynamics, but lacks detailed mathematical or empirical analysis of the angles involved.
- #2
BvU
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Your question leaves a lot of uncertainty; could you elucidate ? What is this about ? human arms ? armaments ? angle wrt to what ?
PS [edit after post #3]: if you would have used a term like "double-wishbone suspension" or just "F1 racing car A-arms" the question would have been a lot clearer from the outset ...
Now it looked more like a spurious a
PS [edit after post #3]: if you would have used a term like "double-wishbone suspension" or just "F1 racing car A-arms" the question would have been a lot clearer from the outset ...
Now it looked more like a spurious a
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- #3
racool
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actually, it is for f1 cars.. for rearwheels which are connected to halfshalfts are supported by these a arms.. so, how will these a arm angles with respect to horizal is made?? is it either by rim diameter or any other factor?/... i need to design rear portion of the car so, i need some help about these angles and some dimensions reqired for the length to be mAde for half shafts
- #4
CWatters
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- #5
racool
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thanx for your reply.. i would also like to know to which component is the other end of a arms is attached. and angle made by a arms with horizontal not the tire with respect to vertical
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- #6
CWatters
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I don't think the angle that the wishbone makes to the ground is critical. It's the angle the tyre makes to the road that's critical to performance.
I think the rear suspension mounts onto the gearbox of an F1 car. I tried to find some photos..
http://www.formula1-dictionary.net/gearbox.html
It's probably better to ask these questions on a motor racing forum.
I think the rear suspension mounts onto the gearbox of an F1 car. I tried to find some photos..
http://www.formula1-dictionary.net/gearbox.html
It's probably better to ask these questions on a motor racing forum.
- #7
JBA
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It is the relative angle of the top arm to the bottom arm that is critical. If both arms are parallel, then the wheel assembly and tire will not change its angle relative to the car frame as they move up and down; however, if the arms are not parallel (as seen in the above top picture) then the angle of the wheel assembly will change angle relative to the car frame and change the camber of the wheel to the ground as the suspension moves up and down. Stated simply, the amount of change of angle designed into the arms is designed specific to each car design to offset the leaning of the car chassis during a turn so as to maintain the same camber of the tire face to the road surface in the turn.
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