| Things that make you go hmmmmmmmmm........
From the NMRA rulebook.
3.4 SUSPENSION, REAR
REAR SUSPENSION: Stock type suspension required. Rear coil-over shocks permitted.
STOCK TYPE SUSPENSION: Stock type suspension may utilize aftermarket, direct replacement type suspension components including aftermarket replacement shocks, springs, and/or control arms. All stock type 3-link and 4 link suspensions must maintain stock lateral angles and attachment points, but may be moved up or down on rear axle. Aftermarket torque arms and coil-overs permitted.
3.4a) 3-LINK AND 4-LINK: Stock or stock-type direct-replacement 3-link and/or 4 links required. All stock type 3 or 4 link suspensions must maintain stock lateral angles and attachment points, but may be moved up or down on rear axle. Retrofitting and/or cross-breeding of 3-link and 4-link components prohibited.
3.4b) LADDER BARS: Prohibited.
3.4c) REPLACEMENT CONTROL ARMS: Replacement upper and lower control arms and permitted. Control arms may use any type bushing, bearing, or rod end. Control arms may be adjustable to any length.
3.4d) PANHARD BARS: Permitted. Panhard bars must be located aft of rearend housing. Panhard bars may be welded.
3.4e) SWAY BARS: Aftermarket or factory sway bars permitted. Aftermarket sway bars may be welded to both chassis and rearend housing.
3.4f) TORQUE ARMS: Permitted.
3.4g) REAR SHOCKS & SPRINGS: Any permitted, including coil over shocks and springs. Shocks must be stand alone and may not be adjustable during run via any means.
3.4h) TRACTION BARS: Bolt on traction bars permitted. |