I finally calculated the forces applied to a strut tower in a 1G turn
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Well, I finally calculated the lateral force on the top of the strut tower during a 1G turn. The following web site gives great info on the suspension calculations and set up a spreadsheet to do the calculations.
I measured the ball joint to the ground (5.2”) and the ball joint to the top of the strut (23.5”) on my wife’s 951 and plugged these and the weight (2899) into the sheet.
In a 1G turn the outside strut tower is subjected to 641.48 pounds of lateral force. Now, we can measure the deflection in the tower by attaching a small bracket to the top of the strut tower and applying 641.48 pounds of force pulling outward and seeing how far the tower flexes. Before we get into the discussion about both towers flexing please read the discussion at this web site.
http://www.e30m3performance.com/myt..._bar_theory.htm
Ken
I measured the ball joint to the ground (5.2”) and the ball joint to the top of the strut (23.5”) on my wife’s 951 and plugged these and the weight (2899) into the sheet.
In a 1G turn the outside strut tower is subjected to 641.48 pounds of lateral force. Now, we can measure the deflection in the tower by attaching a small bracket to the top of the strut tower and applying 641.48 pounds of force pulling outward and seeing how far the tower flexes. Before we get into the discussion about both towers flexing please read the discussion at this web site.
http://www.e30m3performance.com/myt..._bar_theory.htm
Ken
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Three Wheelin'
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SoCal,
I'll agree with you on the need to integrate the center line of the spindle into the calculation, but the tire slippage is irrelevant. The cornering force is defined as 1g, thus the tires are generating a force equal and opposite to the weight of the car. Or, am I missing something?
-J
I'll agree with you on the need to integrate the center line of the spindle into the calculation, but the tire slippage is irrelevant. The cornering force is defined as 1g, thus the tires are generating a force equal and opposite to the weight of the car. Or, am I missing something?
-J
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The 'Guru' is Rennlist indexing because of the number of posts.
In over 40 years of working on cars and sometimes making a living at real engineering I would not consider such a pretentious title. There is always much to learn.
In over 40 years of working on cars and sometimes making a living at real engineering I would not consider such a pretentious title. There is always much to learn.