Jag BrushTM Has Dynamic Gap Clearance, Part I: Effect of Bristle Flex
Los Angeles, CA — the gap clearance between bristle tips of a Jag BrushTM and bore wall of a barrel is dynamic. The flexibility of its bristles at the section where the patch wraps around the brush allows the gap measurement to change as the Jag BrushTM is being used. We can say the bristles actively self-adjust to give an ideal gap clearance.
Since the small diameter section of a two-diameter Jag BrushTM is less than the bore diameter, there is a space or gap created between bristle tips and bore wall. As bristles flex away from an orientation perpendicular to the brush’s twisted wire stem, the space or gap increases. When the bristles flex even more, the gap clearance increases more, and when bristles flex less, the gap clearance decreases. When they are not flexed or barely flexed, bristles tips are closest to the bore wall.
A standard jag, because it is rigid, does not have a dynamic gap clearance. The ribs may have different diameters, but each diameter is fixed. Each diameter being fixed means each gap clearance is fixed around the circumference of each rib. The gap clearance is not dynamic.
Varying lengths of bristles give a Jag BrushTM an additional way to create variable gaps inside the bore. During manufacture, the cut length of bristles varies by a small amount, and so the radial diameter varies by a small amount in the brush's small diameter section. Some bristles reach closer to the bore wall than the average reach, and such bristles create a smaller gap than the average gap.
The extremity of patch radii can reach beyond a brush’s small diameter section. When patch fabric reaches into the brush’s large diameter section, the one-layer patch pleats are pushed deep into rifling by bristles that are long enough to drag inside rifling.
The active self-adjustment of its bristles means Cleaner FasterTM performance.
James Smith +1 336-608-9355 (mobile) RigelProducts@yahoo.com