Spring Hanger Spacing Dimensions for a Tandem Axle Slipper Spring Suspension on a 14,0000 lb Trailer
Question:
i would like to know the hanger spacing on 7 ton slip spring instalation thanks
asked by: Todd
Expert Reply:
The hanger spacing for a tandem axle trailer suspension setup can be determined, but you need to take into account the axle spacing needed for the overall diameter of your wheel and tire combination and the springs you will be using.
Lets say that you plan on using 4 of the 5-Leaf Slipper Springs, # e74SR, for 7,000-lb Trailer Axles, and that your wheel and tire combinations are the Karrier ST235/85R16 Wheel and Tire, # AM32764.
The AM32764 wheel and tires overall diameter is 31.61 inches, so you will need your axles to be centered at least 33-1/2 inches apart and you might be better off going with 36 inches apart, so there is clearance for the suspension to work and the tires do not contact each other at the center between the axles.
Hanger spacing is also dependent on the center equalizer used in the slipper spring setup. The longer the center equalizer, the wider the axle spacing will be, causing a wider hanger spacing.
To get 33-1/2 inch axle centers, for two 7,000 lb axles using the 5-Leaf Slipper Springs, # e74SR, and the Tandem Axle Hanger Kit, # AP202-H202, the hanger spacing would be 28-3/4 inches between the front and center spring hangers and 28-3/4 inches between the center and rear spring hangers. This hanger kit uses # 13-4 equalizers.
To get 36 inch axle centers, for two 7,000 lb axles using the 5-Leaf Slipper Springs, # e74SR, and the Tandem Axle Hanger Kit, # AP216-H202, the hanger spacing would be 30-1/2 inches between the front and center spring hangers and 30-1/2 inches between the center and rear spring hangers. This hanger kit uses # 13-44 equalizers.
The equalizer you referenced, # 13-118-03, is for newer 8,000 and 9,000 lb axles. We carry it as a replacement part and it is not used in any of our hanger kits. If you were to use this equalizer with spring hangers designed for 2 inch slipper springs, you would need to mock up your suspension and determine the hanger spacing you will need. You will also need to make sure there would be clearance between the axle centers for your suspension to move with the wheels and tires you are using.
Products Referenced in This Question
Swan-Shaped Equalizer for 2" Wide Slipper Springs - 10-1/8" Long - 7/8" Center Hole
- Trailer Suspension Parts
- Standard Equalizer
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- Slipper Springs - 2 Inch
- 10-1/8 Inch Long
- Tandem Axle
- Triple Axle
- Dexter
more information >
Karrier ST235/85R16 Radial Trailer Tire with 16" White Wheel - 6 on 5-1/2 - Load Range E
- Trailer Tires and Wheels
- Tire with Wheel
- Radial Tire
- Load Range E
- 235/85-16
- 16 Inch
- M - 81 mph
- 6 on 5-1/2 Inch
- Steel Wheels - Powder Coat
- Kenda
more information >
Tandem-Axle Trailer Hanger Kit for 2" Slipper Springs - 10-1/8" Long Equalizers
- Trailer Suspension Parts
- Hangers
- Suspension Kits
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- Slipper Springs - 2 Inch
- Tandem Axle
- Dexter
more information >
Tandem-Axle Trailer Hanger Kit for 2" Slipper Springs - 13-1/8" Long Equalizers
- Trailer Suspension Parts
- Hangers
- Suspension Kits
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- Slipper Springs - 2 Inch
- Tandem Axle
- Dexter
more information >
5-Leaf Slipper Spring w/ Hook End for 7,000-lb Trailer Axles - 26-5/8" Long
- Trailer Leaf Springs
- Slipper Springs
- Hook End
- 7000 lbs
- 2 Inch Wide
- 5 Leaf
- 26-5/8 Inch Long
- Painted
- etrailer
more information >
Equalizer for 2" Wide Slipper Springs - 13-1/8" Long - 7/8" Center Hole
- Trailer Suspension Parts
- Standard Equalizer
- Camper
- Car Hauler
- Utility Trailer
- Slipper Springs - 2 Inch
- 13-1/8 Inch Long
- Tandem Axle
- Triple Axle
- TruRyde
more information >
Product Page this Question was Asked From
Equalizer for 2" Wide Slipper Springs - 17-3/8" Long - 1" Center Hole
- Trailer Suspension Parts
- Standard Equalizer
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- Slipper Springs - 2 Inch
- 17-3/8 Inch Long
- Tandem Axle
- Triple Axle
- Dexter
more information >
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