17-05-2020, 02:19 PM
Hi Nick
You are right of course. However introducing some upwards stress in the frame may also help with live loads by introducing negative stresses in the body (a sort of prestressing). You are also right about triangulated frames and deep stiff sections.
The problem with the rear support in early cars is the necessity to avoid the rear axle and find good connection with the chassis which means that a good triangulated framework is not possible. Parazine’s solution seems as strong and as stiff as you are likely to get without increasing the weight too much.
Cheers
Howard
You are right of course. However introducing some upwards stress in the frame may also help with live loads by introducing negative stresses in the body (a sort of prestressing). You are also right about triangulated frames and deep stiff sections.
The problem with the rear support in early cars is the necessity to avoid the rear axle and find good connection with the chassis which means that a good triangulated framework is not possible. Parazine’s solution seems as strong and as stiff as you are likely to get without increasing the weight too much.
Cheers
Howard