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Replaced Leaf Springs On Tandem Axle Boat Trailer And The Rear Springs AreTilting Rear Axle Forward

Question:

I recently purchased a tandum axle boat trailer that needed the leaf springs replaced. I measured what was left of the rear springs and the intact front, both messured to be 20 inch from eye to eye. I purchased new springs and put it all together, but the rear springs are tilting the axle about 5 degrees forward and the equilizer is not even to the front springs/axle it seems that either I need to put a shackel on the rear mount of the rear springs or get a longer spring for the rear, I always thought that on tandum axle trailers the leafs are the same size front and back, am I wrong? any help appreciated

asked by: Robert J


Expert Reply:

If you do not have the boat on the tandem axle trailer, what you have mentioned is how the trailer suspension will look without a load on it. The equalizer will be up in the rear and the rear spring will be tilting the axle forward. The reason is because the rear tires on your boat trailer are made to scrub when turning and with the suspension set up this way it keeps the majority of the load on the trailer from being put on the rear tires.

If the boat is on your trailer and the trailer suspension is sitting with the rear axle tilted forward and the equalizer not level, then you have the boat up on the trailer too far. The boat will have to be moved back so the trailer will be loaded correctly.

On a tandem axle trailer the leaf springs are the same size, front and back. You will want to make sure you have the correct size leaf springs for the trailer axles weight capacity.

A leaf spring like the Redline 3-Leaf Double-Eye Spring, part # 1020, has 3 leaves and a eye to eye measurement of 20-1/4 inches and is rated for 1,000 lbs., so two leaf springs will work on a 2,000 lb. axle.

A correct leaf spring suspension on a tandem axle trailer will have four same length leaf springs attached to the center hanger of the trailer with an equalizer and shackle straps.

I am including a link to a FAQ page on a double-eye trailer suspension.

expert reply by: Jeff D




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Product Page this Question was Asked From

3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles


3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles

ratingratingratingratingrating
41 reviews

1020

Retail: $23.19

Price:  $14.99

Product Summary:

Leaf Springs
For Double Eye Springs
3 Leaf
20-1/4 Inch Long

Product Specs:

For 1-3/4 Inch Wide Spring
2000 lbs


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Questions and Comments about this Question

Does that mean that 4 1000lb leaf spings will total a 4000lb capacity? or do i need to buy 4 3500lb leaf springs to cover the weight of a 20ft aquasport.Thank You

comment by: ScottN - 1/15/2013

You will have 2 leaf springs per axle. For example if you have a 2,000 pound axle, you will need two 1,000 pound springs to take full advantage of the axles 2,000 pound capacity. The number of axles, and the weight capacities needed, will be determined by the weight of the trailer and its load. Oversized springs could result in damage to the trailer or the axle.

Patrick B - 1/24/2013







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