The
factor on bellows compression is the type of material used. This ranged
from
leather, neoprene rubber, early naugahyde, vinyl, rayon and nylon.
The
maximum lenth and compression are as new. The max lenth on an
old
leather bellows will shrink as much as 6 inches!!
The
compression goes up also.
8x10
Max Lenth Max Compression
1923-50 Leather
31in
5in
1950-52 Neoprene
31in
4in
1950-52Naugahyde
31in
4in
1952-68 Naugahyde
31in
3.5in
1968-83 Rayon
31in
3.5in
1979-88 Nylon
31in
3in
5x7 OS
1926-50 leather
24in
3in
1950-52 Neoprene
24in
3in
1950-52Naugahyde
24in
3in
4x5 Spec / 5x7 View
1952-68 Naugahyde
24in
3in
1968-83 Rayon
24in
2.75in
1979-88 Nylon
24in
2.50in
8x10
4x5 / 5x7
Rear swing
Plus Minus 15 deg
15 deg
Front swing
Plus Minus 15 deg
15 deg
Front rise
5 1/2 in
3 1/2 in