Hanger Kit to Install Leaf Spring on Trailer that Has Slipper Springs

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Question:

Hello, This is my first time replacing trailer springs. My trailer currently has slipper springs. Looking at pictures online, I thought it actually needed double eye springs because theres shackle bolts on both ends. I ended up ordering 23.5inch springs Item # SP-113275 but now Im second guessing myself. After researching a little more, its my understanding the hangers in the front of the trailer should be longer than hangers in the back to allow for shackles. The hangers are welded to the frame on my trailer and both are the same size, front and back. Ive attached a picture of the current setup. I have a few questions. Would it be an issue to use the double eye springs that I already ordered if I bought shackles? Im wondering if the trailer would sit too low in the back since the hangers are the same size. If this will work, what size shackles do you recommend? If you recommend slipper springs then Im not quite sure which size to order or if you have the size I need in stock. Ive read through the description of Item # SP-179275 but Im concerned they might not be long enough. The shackle bolts are 23.5inch apart, center to center, on my trailer. This spring is only 22 11/16inch from center of eye to center of the arch on the slipper end. The free arch is about 3.25inch on my current springs, although I understand the length and free arch of the springs can change with extended use as the springs flatten out. I appreciate any advice you can provide. My order # was 110016208, if that helps. Thank you, Bryce

asked by: Bryce D

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Expert Reply:

You could pretty easily install the springs you have but you will need to use a single axle trailer hanger kit like part # APS4 as the bushing sizes and hangers you have now won't work with the spring you have part # SP-113275.

expert reply by: Jameson C

0

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Bryce D.

9/16/2020

Hello, This is my first time replacing trailer springs. My trailer currently has slipper springs. Looking at pictures online, I thought it actually needed double eye springs because theres shackle bolts on both ends. I ended up ordering 23.5inch springs Item # SP-113275 but now Im second guessing myself. After researching a little more, its my understanding the hangers in the front of the trailer should be longer than hangers in the back to allow for shackles. The hangers are welded to the frame on my trailer and both are the same size, front and back. Ive attached a picture of the current setup. I have a few questions. Would it be an issue to use the double eye springs that I already ordered if I bought shackles? Im wondering if the trailer would sit too low in the back since the hangers are the same size. If this will work, what size shackles do you recommend? If you recommend slipper springs then Im not quite sure which size to order or if you have the size I need in stock. Ive read through the description of Item # SP-179275 but Im concerned they might not be long enough. The shackle bolts are 23.5inch apart, center to center, on my trailer. This spring is only 22 11/16inch from center of eye to center of the arch on the slipper end. The free arch is about 3.25inch on my current springs, although I understand the length and free arch of the springs can change with extended use as the springs flatten out. I appreciate any advice you can provide. My order # was 110016208, if that helps. Thank you, Bryce

Reply

Jameson C.

9/16/2020

Hangers are normally welded to trailer frames. It's pretty common to have to cut old ones off and weld on new ones.

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Answer 1

Hydrastar has a slip-on style version of their 7k disc brake kit with the part #HSE7K-T1SO. You will also need idler hubs too like with the part #AKIHUB-865-7-1-EZ-K but you should note that we don't have any oil-bath idler hubs in this capacity.…

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Answer 2

It sounds like you're trying to decide between the #HSE7K-T1SO and the #HSE7K-T1 for your 2017 Jayco North Point. I recommend the #HSE7K-T1SO with the over-the-hub rotors for the cost savings. There is no real difference between the two aside…

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Answer 3

Yes the Hydrastar Disc Brake Kit for 7k axles part #HSE7K-T1SO fits Dexter and LCI/Lippert 7k axles as they use the same spindle dimensions and brake mounting flange dimensions.

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Answer 4

The Dexter #42865-KIT will work with the Hydrastar #HSE7K-T1SO. These fit 8 on 6-1/2 bolt patterns on idler hubs designed for a 7,000 lb axle. Dexter is typically considered to be the highest quality which is why they usually cost more. The…

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Answer 5

Hey Adam, 24-5/8" is a standard sizing for 2,000lb leaf springs so the 4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles - 24-5/8" Long #e69SR is what you need. It unfortunately doesn't look like we offer a slipper spring…

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Answer 6

Hey Kevin thanks for your question. There is not much downside to going with the 5,000 lb springs instead of the 3,500 lb. A higher rated spring may make the ride a bit more "chunky" at times, since the spring would not flex as easily.…

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Answer 7

In general, you can measure the diameter of an axle tube to get the rating, though it is more of a guideline and the only way to know for sure is by some identifying marker on the axle and contacting the manufacturer. However, since that isn't a…

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Answer 8

For your application I recommend using the 4-Leaf Slipper Spring w/ Hook End for 4,000-lb Trailer Axles #SP-230275. This measures 26-5/8" to the end of the spring but if you check out the attached photo you'll see that it will fit great with…

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Answer 9

The spring hanger placement is going to be determined by your axle spacing. For example, if your axles are spaced 33 inches apart, as shown in the attached diagram, a 7K axle slipper spring, like #e74SR, requires a distance of 28-1/2 inches between…

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Answer 10

I was able to find more info on your slipper spring. Looks like you have a Dexter 5115 slipper spring that is 27-1/2 inches long and has a 4k capacity. I attached a picture that has all of the hanger spacing dimensions needed when installing this…

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Answer 11

Ff the springs you are installing are 25-1/4 inches, you would need to place the hangers between 24-3/4 and 25 inches apart. The shackle should be angled as the drawing shows in the attached helpful article, which should be toward the rear of the…

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Answer 12

Hi Ross; the #SP-179275 and #e69SR are identical. The only real difference between the two slipper springs is going to be the cost. Since there will be no difference in performance in salt water I would say get whichever one is cheaper.

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Hanger Kit to Install Leaf Spring on Trailer that Has Slipper Springs

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