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Dimensions for Spring Hanger Spacing Using the # APTT3 Triple-Axle Hanger Kit on a Boat Trailer  

Question:

I was woundering if you would be able to tell me what the overall length of the front, center , and rear mounts were? Or if they are all the smae length. I need to know so that i can build a sub-frame for the axles to mount to for my boat trailer. Thank you, and have a great day.

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Expert Reply:

The spring hanger mounting dimensions for the Triple-Axle Trailer Hanger Kit, item # APTT3, are as follows.

From the center of the hole in the front hanger, to the center of the hole in the center front hanger, the distance should be 29-1/2 inches. From the center of the hole in the center front hanger, to the center of the hole in the center rear hanger, the distance should be 34 inches. And from the center of the hole in the center rear hanger, to the center of the hole in the rear hanger, the distance should be 29-1/2 inches.

These hanger dimensions will give you 34 inch axle spacing on your trailer with any of the following springs and a 2-3/8 inch axle.

3-Leaf Double-Eye Spring 2,500-lb Trailer Axles, item # e66SR
3-Leaf Double-Eye Spring 4,000-lb Trailer Axles, item # e57SR
4-Leaf Double-Eye Spring 5,000-lb Trailer Axles, item # e28SR
4-Leaf Double-Eye Spring 3,500-lb Trailer Axles, item # e54SR
5-Leaf Double-Eye Spring 6,000-lb Trailer Axles, item # e34SR
6-Leaf Double-Eye Spring 7,000-lb Trailer Axles. item # e64SR

You will also need U-Bolts, U-Bolt plates and spring seats, see links, for your specific axle dimensions, to complete the hardware needed to attach the axles to the hanger kit. If you have axles other than 2-3/8 inch diameter, or you are using springs other than those mentioned, let me know the dimensions and I will be able get you the correct dimensions for the specific axles and springs you are using.

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Bob G
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