So im going with a quarter elliptical spring setup in the rear on the model a build, but im not sure how i should attach the springs to the rear axle! I have scoured pics and read lots of info on the setup, but ive seen solid mounting and shackles, so what way is better?

Now correct me if im thinking wrong, but it seems to me that solid mounting would cause spring bind issues when you hit a bump cause as the radius straightens out it gets longer which would cause a pushing affect on the axle that cant move any, which is why shackles are used! or is there not really enough movement for this to be and issue.

The reason i ask is it would be easier for me to mount it solid. Im just a little concerned about the bind issue. Ill post pics soon.