Vehicle suspension systems and methods

A device, comprising:

• a first sideleaf including a first proximal sideleaf end, a first distal sideleaf end, and a first sideleaf member extending from the first proximal sideleaf end to the first distal sideleaf end, wherein:
• the first proximal sideleaf end, the first distal sideleaf end, and the first sideleaf member are monolithic;
• and
• the first proximal sideleaf end and the first distal sideleaf end each include a first proximal sideleaf end eye and a first distal sideleaf end eye, respectively, the first proximal sideleaf end eye configured to have a first proximal sideleaf end bushing insertably fitted thereinto and the first distal sideleaf end eye configured to have a first distal sideleaf end bushing insertably fitted thereinto, wherein:
• the first proximal sideleaf end bushing is configured to receive a first hanger fastener fitted insertably thereinto, the first hanger fastener further being insertably fitted into a first hanger in mechanical communication with a vehicle frame of a vehicle, thereby forming a first proximal sideleaf end pinned connection between the first proximal sideleaf end and the first hanger;
• and
• the first distal sideleaf end bushing is configured to receive a first axle bracket fastener fitted insertably thereinto, the first axle bracket fastener further being insertably fitted into a first axle bracket of a first axle assembly, thereby forming a first distal sideleaf end pinned connection between the first distal sideleaf end and the first axle bracket;
• a second sideleaf including a second proximal sideleaf end, a second distal sideleaf end, and a second sideleaf member extending from the second proximal sideleaf end to the second distal sideleaf end, wherein:
• the second proximal sideleaf end, the second distal sideleaf end, and the second sideleaf member are monolithic;
• and
• the second proximal sideleaf end and the second distal sideleaf end each include a second proximal sideleaf end eye and a second distal sideleaf end eye, respectively, the second proximal sideleaf end eye configured to have a second proximal sideleaf end bushing insertably fitted thereinto and the second distal sideleaf end eye configured to have a second distal sideleaf end bushing insertably fitted thereinto, wherein:
• the second proximal sideleaf end bushing is configured to receive a second hanger fastener fitted insertably thereinto, the second hanger fastener further being insertably fitted into a second hanger in mechanical communication with the vehicle frame, thereby forming a second proximal sideleaf end pinned connection between the second proximal sideleaf end and the second hanger;
• and
• the second distal sideleaf end bushing is configured to receive a second axle bracket fastener fitted insertably thereinto, the second axle bracket fastener further being insertably fitted into a second axle bracket of a second axle assembly, thereby forming a second distal sideleaf end pinned connection between the second distal sideleaf end and the second axle bracket;
• and
• a crossleaf including a proximal crossleaf end, a distal crossleaf end, and a crossleaf member extending from the proximal crossleaf end to the distal crossleaf end, wherein the proximal crossleaf end is mechanically connected by a proximal bolted compression connection to the first sideleaf member and the distal crossleaf end is mechanically connected by a distal bolted compression connection to the second sideleaf member such that a position of the proximal crossleaf end and the distal crossleaf end relative to the first sideleaf proximal end and the second sideleaf proximal end, respectively, is adjustable by loosening the proximal bolted compression connection and the bolted distal compression connection, sliding the crossleaf along the first sideleaf and the second sideleaf, and re-tightening the proximal bolted compression connection and the bolted distal compression connection.

A device, comprising:

• a first sideleaf including a first proximal sideleaf end, a first distal sideleaf end, and a first sideleaf member extending from the first proximal sideleaf end to the first distal sideleaf end, wherein:
• the first proximal sideleaf end, the first distal sideleaf end, and the first sideleaf member are monolithic;
• and
• the first proximal sideleaf end and the first distal sideleaf end each include a first proximal sideleaf end eye and a first distal sideleaf end eye, respectively;
• and
• a second sideleaf including a second proximal sideleaf end, a second distal sideleaf end, and a second sideleaf member extending from the second proximal sideleaf end to the second distal sideleaf end, wherein:
• the second proximal sideleaf end, the second distal sideleaf end, and the second sideleaf member are monolithic;
• and
• the second proximal sideleaf end and the second distal sideleaf end each include a second proximal sideleaf end eye and a second distal sideleaf end eye, respectively;
• and
• a crossleaf including a proximal crossleaf end, a distal crossleaf end, and a crossleaf member extending from the proximal crossleaf end to the distal crossleaf end wherein the proximal crossleaf end is mechanically connected by a proximal bolted compression connection to the first sideleaf member and the distal crossleaf end is mechanically connected by a distal bolted compression connection to the second sideleaf member such that a position of the proximal crossleaf end and the distal crossleaf end relative to the first sideleaf proximal end and the second sideleaf proximal end, respectively, is adjustable by loosening the proximal bolted compression connection and the bolted distal compression connection, sliding the crossleaf along the first sideleaf and the second sideleaf, and re-tightening the proximal bolted compression connection and the bolted distal compression connection.