Difference between revisions of "Head Angle Change With Suspension Travel"
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Here are the equations: | Here are the equations: | ||
| − | A12 = Initial Head Angle | + | *A12 = Initial Head Angle |
| − | B12 = Fork Offset | + | *B12 = Fork Offset |
| − | C12 = Sagged fork length | + | *C12 = Sagged fork length |
| − | D12 = Initial Wheelbase | + | *D12 = Initial Wheelbase |
| − | E12 = Initail BB Height | + | *E12 = Initail BB Height |
| − | F12 = Chainstay Length | + | *F12 = Chainstay Length |
| − | G12 = Wheel Diameter | + | *G12 = Wheel Diameter |
| − | H12 = Fork Compression or extention from sagged | + | *H12 = Fork Compression or extention from sagged |
==Head Angle Change== | ==Head Angle Change== | ||
Revision as of 00:45, 14 December 2007
According to very accurate calculations that I have done, the head angle will change on a hard tail mountain bike approximately 0.0521° per mm of travel if it has a 1058mm initial wheelbase. The bottom bracket height will change approximately -0.3868mm with each mm of suspension travel.
Different wheelbase bikes will change at different rates.
Formulas
Here are the equations:
- A12 = Initial Head Angle
- B12 = Fork Offset
- C12 = Sagged fork length
- D12 = Initial Wheelbase
- E12 = Initail BB Height
- F12 = Chainstay Length
- G12 = Wheel Diameter
- H12 = Fork Compression or extention from sagged
Head Angle Change
Bottom Bracket Height Change
Mechanical Trail Change
