Contributed by: F. Navest
The original seats for the MGB were carefully designed comfortable leather seats.
Surprising that 99% of the newly manufactured replacement seats fail to comply, although the foam bottom, which lies on top of the diaphragm, is correctly shaped. The foam bottom has, on purpose, a more or less square recessed area. The idea is that you sit in, instead of on the seat. Although not exactly a bucket seat, the design of the seat bottom is to prevent the occupants from sliding around on their seat while driving.
This centre section consists of five flutes lying slightly lower than the frontal and lateral bolsters of same seat bottom. This centre section is reinforced with heavy duty cotton, which has been sewn together with the piping and leather during manufacture. The cotton will prevent the leather from stretching as the cotton will take the load of the seated person. Sitting on the seat, the cotton takes the loading across the seat from one lateral bolster to the other.
Each individual flute is moreover slightly bulbous.
The bulbous effect of each flute is brought about by a piece of half round foam. It is about 6 to 8 mm high with the width and length of a flute. Between the leather and cotton of each flute this foam has been slid into place.
The piping along the front of the flutes lies lower than the frontal bolster as the piping is tied down with a piece of string at the front
corners to the diaphragm. Both these pieces of string are under slight tension when the seat is not used. When the seat is occupied both these string are not under tension.
The combination of the cotton, the foam underneath the flutes as well as the string will give the seat bottoms a fresh and inviting impression.
String to retain piping lower than frontal bolster.