How to Pick Spindle Drop, Lift or Straight for Timbren Axle Less System

Updated 08/03/2017 | Published 08/02/2017

Products Featured in This Question

Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle - 4" Lift - 5 Bolt - 3.5K

(164)

$1305.78

Timbren Axle-Less Trailer Suspension w Idler Hubs - Standard Duty - 4" Drop - 5 on 4-1/2 - 3.5K

(108)

$1107.85

Timbren Axle-Less Trailer Suspension w Idler Hubs - Standard Duty - No Drop - 5 on 4-1/2 - 3,500 lbs

(108)

$1137.91

Question:

I want to replace my tandem axle boat trailers existing 4inch axles with the 3500# Timbren axle less susp. system. The trl. frame is for a flat bottomed boat consisting of 6inch tall by 3 1/2inch wide marine grade aluminum I-beam frame construction. The Timbren system would be secured to this frame configuration. My question is what would be the appropriate spindle for this application - 4inch , straight or 4inch lift.

asked by: Michael G

Expert Reply:

The style of spindle needed will be determined by what height would work the best. The drop spindles of # A35RD545 will put the axle center 1/4 inch below the bottom of the trailer frame. The 4 inch lift part # ASR35HDS02 will have that distance at 7-5/16 inch.

The straight spindle part # A35RS545 will have that dimension right at 4 inches. I attached a diagram of this kit that shows the spindle height of 4 inches.

expert reply by: Jameson C