Motorcycle suspension

A suspension unit comprising:

• a piston assembly connected to an adjuster, wherein the adjuster comprises:
• a high-speed compression cavity formed as a cylindrical cavity on one end of an adjuster block, and wherein a high-speed rebound cavity is cylindrical cavity formed on another end of the adjuster block;
• an adjuster volume that both the high-speed compression cavity and the high-speed rebound cavity connect into, an adjuster block compression entry port connects to the high-speed compression cavity;
• an adjuster block rebound entry port that connects to the high-speed rebound cavity;
• a low-speed compression entry port that connects the high-speed compression cavity to the low-speed compression cavity;
• a low-speed rebound entry port that connects the high-speed rebound cavity to the low-speed rebound cavity;
• a low-speed return port that connects to the adjuster volume and both the low-speed compression cavity and the low-speed rebound cavity;
• a low speed compression adjuster shaft received within a low-speed compression cavity;
• the low speed compression adjuster shaft meters the flow of oil either by using a series of orifices, or by restricting a fluid flow via reducing the size of the orifice;
• a low speed rebound adjuster shaft received within a low-speed rebound cavity, wherein the low speed rebound adjuster shaft controls the fluid flow;
• a high-speed compression adjuster assembly is placed in the high-speed compression cavity;
• a high-speed rebound adjuster assembly is placed in the high-speed rebound cavity;
• a high-speed compression adjuster shaft passing coaxially through a high-speed compression adjuster body, wherein the high-speed compression adjuster shaft is threaded to the high-speed compression adjuster body;
• a high-speed compression valve spring fixed to the high-speed compression adjuster shaft, wherein the high-speed compression valve spring is pre-compressed depending on the high-speed compression adjuster shaft, wherein the high-speed compression valve spring presses a high-speed compression exit valve against an high-speed compression adjuster plate over the high-speed compression adjuster chamber exit port.

A suspension unit comprising:

• an adjuster;
• and a piston assembly connected to the adjuster, wherein the piston assembly includes:
• a. three or more concentric cylindrical bodies including:
• i. an outer tube;
• ii. an inner tube, wherein the inner tube is inside and concentric to the outer tube;
• and
• iii. a dampener rod, wherein the dampener rod is inside and concentric to the inner tube, wherein the outer tube is rigidly connected to the dampener rod, wherein the inner tube is telescopically mounted to the outer tube;
• b. a dampener rod piston, wherein the dampener rod piston is formed at one end of the dampener rod, wherein the dampener rod piston seals against an inside surface of the inner tube;
• wherein the dampener rod piston divides an internal volume of the inner tube into an inner tube reservoir, and a rebound chamber;
• c. a dampener rod seal, wherein the dampener rod seal is concentric to the inner tube and is fit around the dampener rod such that the dampener rod seal restricts a fluid flow from the rebound chamber;
• and
• d. an axle clamp, wherein the axle clamp caps an end of the outer tube opposite the inner tube reservoir, wherein the axle clamp closes off the outer tube and forms a compression chamber between the dampener rod seal and the axle clamp, wherein the dampener rod seal restricts fluid flow between the compression chamber and the rebound chamber;
• e. a dampener rod rebound passage and a dampener rod transfer chamber are formed internal to the dampener rod;
• and
• f. a dampener rod inlet port is formed as a port in the dampener rod and connects the dampener rod rebound passage to the rebound chamber;
• g. an axle clamp rebound port connects to the dampener rod rebound passage;
• and
• h. the dampener rod transfer chamber has an opening that connects to the compression chamber at one end and the dampener rod transfer chamber connects to the dampener rod piston ports at another;
• and
• i. the dampener rod piston ports connect to the inner tube reservoir;
• and
• j. a compression exit port passing from the compression chamber through the outer tube;
• k. the compression exit port connects to the axle clamp rebound port and valving is provided to adjust the flow between the compression exit port and the axle clamp rebound port.