To make this clearer, its a drag brake to keep the bellows
from extending if the camera is pointed down. The minimum drag is
adjustable with the screw in the center of the lever that locks
the focus rail. Try adjusting it. I don't find the rails usually
need lubricating but perhaps a small amount of light oil on the
bearings of the axle the focusing gears are on is good. By memory
there is a spring under them.
On 4/11/2019 12:57 PM, `Richard Knoppow wrote:
Some Speed/Crown Graphics have a brake for the rail. Its been a while but I think there is an adjusting screw either in the center of the brake lever or on the side. It should not need lubrication. I need to get my Pacemaker out of storage and refresh myself about it. I think there may be drawings at www.graflex.org
