Reference: C15 s/n 2842129988 history and restoration

[Tony Smith]

Originally posted by Bob Carriere
....just looking over the pictures again..... that frame has helper springs over the regular springs.... is it typical of C15 ???

We have looked at the difference in the C15 and C15A chassis in this thread. In that thread, David Hayward asked: "Why did the 4 x 2 have auxiliary springs and the 4 x 4 not unless this was a later mod?", to which I replied: "I can only speculate that the location of the front springs on the C15 being further inboard would have would have given rise to pronounced body roll on a Cab-Over design and required the Auxillary springs on the back to try and stiffen up the roll, but not the ride?". Note that an F15 does NOT have the Auxillary springs on the rear.