The Ford Barn

40 Deluxe · 04-14-2013, 07:11 PM

I have a question about some of "the driving force being transmitted through the top of the rear spring to the crossmember". In effect, this would mean we're moving the car by pushing on the rear spring eyes, and the spring only contacts the frame at the top of it's arch. This is a lot of leverage against the side of the spring, which would seem to easily twist the spring (and crossmember) out of position. It's always seemed to me that a transverse spring is only for carrying a vertical load (weight of the car), not a side load. Therefore, all the driving force is transmitted through the torque tube to the motor mounts, which are designed to carry a thrust load.

04-14-2013, 07:11 PM	#25
40 Deluxe Senior Member Join Date: May 2010 Location: now Kuna, Idaho Posts: 3,818	Re: Brattons NEW & Improved Float A Motor...any comments or Opinions? I have a question about some of "the driving force being transmitted through the top of the rear spring to the crossmember". In effect, this would mean we're moving the car by pushing on the rear spring eyes, and the spring only contacts the frame at the top of it's arch. This is a lot of leverage against the side of the spring, which would seem to easily twist the spring (and crossmember) out of position. It's always seemed to me that a transverse spring is only for carrying a vertical load (weight of the car), not a side load. Therefore, all the driving force is transmitted through the torque tube to the motor mounts, which are designed to carry a thrust load.