Recommended Hub And Drum for Electric Brakes With 4 On 4 Bolt Pattern For 1973 Scamp Trailer

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Question:

Question about trailer brakes. I want to add electric brakes to a 75 Scamp that has 13 inch wheels 4 on 4. Your product descriptions are very complete, helpful! But I can not find any hubs for 4 on 4 except the 7 inch. The ten inch brakes seem better and would fit my 13 inch wheelsbut can not find anything by 5 lug hubs. Yes, the 10 inch brakes are rates 3500 lbs, more than I need but they seem a better design. Any suggestions? I am also in process of replacing the Dexter flex/torsion axle to improve suspension and to include a brake mounting flange. I think I will have to go through Dexter to get the torsion axle and then will know wheel bearing specs etc. The torsion axles seem a bit too specific for you to handletoo bad. Your many comments and videos are a great help on many projects!

asked by: JT N

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Expert Reply:

The hub we offer that will work with electric brakes and has a 4 on 4 bolt pattern, is part # 8-173-16UC3.

You are correct that this hub and drum will only work with 7 inch x 1-1/4 inch brakes. The bearings, races, and seals are included with this assembly. I have attached a product review video for this hub/drum you can check out.

The electric brakes that will work with this drum is designed for axles rated up to 2,000 lbs. The brakes have a 4 bolt mounting flange. For the right hand(passenger side), the part number is # 23-48, and for the left hand(driver's side), the correct brake assy is part # 23-47. These are designed to work safely for a trailer weighing up to 2,000 lbs and should work well for you.

The bolts, washers and adjustment plugs are sold separately. For those items you can order part # 7-75 for the bolts, part # 5-8 for the washers, 6-17 for the nuts, and part # BP10-220 for the adjuster plugs.

We do not offer torsion axles.

expert reply by: Jeffrey L

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Answer 1

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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Answer 2

Your original rims are the hub-centric type, meaning that the pilot hole in the center of the rim provides the centering for the rim on the hub. In the lug-centric type that you are switching to the centering of the rim on the hub is provided by the…

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Answer 3

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 5

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 6

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 7

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 8

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 9

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

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Answer 10

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 11

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 12

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Recommended Hub And Drum for Electric Brakes With 4 On 4 Bolt Pattern For 1973 Scamp Trailer

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