We depend on O-Rings for many pneumatic
operations in our model airplanes. In the case of the BVM O-Ring Brake
System (US Patent #5,601,159) we count on this simple device to bring our jets
to a safe stop.
Our most sophisticated competition scale jets like the F-100 and F-86, actually
have 5 separate pneumatic systems to give us the required reliability for
operating landing gear, doors, speed brakes, wheel brakes, canopy and tank drop. Most
o-rings are made from Buna rubber and do have a useful
If your cylinders or
O-Ring brakes are
over 5 years old and are experiencing leaks, first try to rejuvenate their
function by injecting some BVM "Thin O-Ring" Lube and cycle the system.
DO NOT use any other type of lube,
especially a petroleum based substance like WD-40. Doing so, will totally
pollute that cylinder and possibly the entire pneumatic system attached to it.
If the O-Rings in your BVM Brakes are
malfunctioning, they are easily replaced with new pre-lubed O-Rings from BVM.
Use only a sharpened wood dowel to remove them from the brake hub.