Recommended Leaf Spring For 1,200 Lb Boat Trailer

Question

Question:

I am looking for double eye leaf springs 30In long for a boat trailer 1200lb measured when boat is on trailer.can you help

asked by: Wayne F

0

Expert Reply:

The longest leaf springs we offer are the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles, part # SP-210275.

These springs measure 27 inches eye-to-eye and are designed for axles up to 3,500 lbs. I have attached a photo of this spring that has the dimensions noted you can check out. When measuring the springs, the weight has to be removed from the springs.

The leaf springs I recommend for your trailer are part # e84SR. This spring is designed to work with a 2,000 lb axle. The eye-to-eye dimension is 20-3/8 inches. I have attached a product review video for this leaf spring you can check out.

To make this system work you would need to use new spring seats like part # TRSS175. These are designed to be welded on and are for a typical 2,000 lb axle.These are sold individually.

The shackle bolt needed for this spring seat is part # 166081. This includes a 3 inch long bolt with a locknut and is sold individually.

expert reply by: Jeffrey L

0

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Answer 1

There is no specific torque rating for shackle bolts. You'll want to ensure that the bolts you use are long enough so that when installed you will have at least 2 threads protruding from the nut. Make sure that the bolt you're using has a…

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Answer 2

I do understand your concern with the potential of a slightly longer thread length on the Shackle Bolt #166081 causing the shackle strap to sit right on the threads. The fact is though that the shackle positioned there as opposed to the unthreaded…

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Answer 3

If you will be using 9/16 inch fasteners then torque them down to 110-114 foot pounds. If using 1/2 inch torque them to 76-78 foot pounds. You can find all sorts of different torque specs for the same size bolts or nuts and they will all be around…

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Answer 4

There actually is not a specific torque rating for shackle bolts like the Redline #166081 that you referenced. You just want to make sure that the bolt is long enough so that when installed you have at least 2 threads protruding from the nut. This…

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Answer 5

There usually is not a bushing in the upper bolt on the shackle links. When tightening the bolts on the shackle link you will want to get them tight but you do not want to over tighten them. Being tight will not keep the suspension from working…

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Answer 6

There is not a specific torque requirement for bolts like the Shackle Bolt #166081. You'll want to make sure that you're using a lock nut and ensure that the bolts you use are long enough so that when installed you will have at least 2…

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Answer 7

It looks like you might be asking about a few different torque specs so I'll address all of them separately. For a trailer axle spindle nut like part #165686 you will need to run the spindle nut down until there is no more side-to-side play in…

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Answer 8

You're certainly on the right track, with the exception of the leaf spring U-bolt kit. The #K71-385-00 is meant for a 3500 lb axle, and wouldn't fit your 2000 lb axle correctly. The U-bolts would be too large. If you want to keep the axle…

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Answer 9

For a 9/16 inch shackle bolt such as #TRFA73Z916DLNZ you will want 65 to 95 foot pounds of torque. Provided that you are within that range you won't over-torque the nuts. A little bit of play is expected but large gaps could be taken up using…

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Answer 10

Trailer axles are designed to have the bow in them that you described. This allows the axle to flatten out when it is loaded and have the proper camber. If you have axles that are rated for considerably more than what the trailer will ever have…

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Answer 11

There is no specific torque rating for shackle bolts. Basically for the middle bolt there should be enough free play in the shackles to allow them to move. Tightening the shackle bolts too much will squeeze the shackle straps against the leaf springs…

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Answer 12

Since your brakes have been adjusted properly, that definitely rules out one issue. The overgreasing of the hubs and failing grease seal wouldn't have any impact on the braking unless somehow the grease got inside the drum, but you still want to…

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