Fender Design - Wheel Arch Challenge
Aim : To decide whether the given design passes the European standards or not.
Given Design :
European Regulations Requirement :
- Take the outline of the wheel and the fender.
- Make the centre of the wheel circle.
- Draw horizontal and vertical perpendicular axis from the centre of the wheel circle.
- Draw lines at 30 degrees and 50 degrees from the centre.
- Make a point on the fender line at 150mm from the horizontal.
- Extend a line to this point from the centre.
- Then make a line that is exactly between the 50 degree line and the line made on the 150mm point.
- Measure the distances between the points on the wheel circle and fender curve. All of these should be greater than 10mm to satisfy the European regs.
- Secondly curve should be at least 5mm.
- Check whether the design passes these conditions and conclude whether it can pass the European Regulations Requirements.
Challenge :
Sketch has been made
Now let as measure the distance between the points at the 5 sections.
SA-SA
25.992mm > 10mm
SB-SB
43.641mm > 10mm
SC-SC
38.36mm > 10mm
SD-SD
40.951mm > 10mm
SE-SE
43.786mm > 10mm
Now to find the horizontal distance between the wheel and fender. This distance should be atleast 5mm from SA,SB, & SC points.
Distance between SA point and fender outer curve = 9.949mm (pass)
Distance between SB point and fender outer curve = 10mm (pass)
Distance between SC point and fender outer curve = 0.114mm (Fail)
Table :
| Distance | Result | |
| SA-SA | 25.992 > 10 | PASS |
| SB-SB | 43.641 > 10 | PASS |
| SC-SC | 38.36 > 10 | PASS |
| SD-SD | 40.951 > 10 | PASS |
| SE-SE | 43.786 > 10 | PASS |
| From outer curve of fender to | Distance | Result |
| SA | 9.949 > 5 | PASS |
| SB | 10 > 5 | PASS |
| SC | 0.114 < 5 | FAIL |
Conclusion :
The given design satisfies all European standards but one, i.e. the distance from SC point to the fender curve ( which is just 0.114mm), Which is way below the recommended 5mm minimum distance. Therefore, This fender cannot pass the European standards. The design should be reverted back to the class A designer telling him to modify the design and increase the gap there.