Recommended Electric Over Hydraulic Actuator For a Tandem 3,500lb Axle Boat Trailer

Question

Question:

I am thinking about doing electric over hydraulic brakes for my boat trailer. The surge brakes work ‘ok’ but in the winding hills of TN they are always on as I weave around down to the lake and hubs are hot. The trailer is a tandem axle with brakes on both axles. The axles are 3500lbs each. Any recommendations on hardware to make this happen?

asked by: Doug S

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Expert Reply:

I recommend using either of our Hydrastar Vented Marine Electric Over Hydraulic Actuators. We have a kit for Drum # HS481-8065 or Disc # HS481-8067 brakes. Both of these kits use plug and play connectors for the breakaway battery, trailer disconnect, and brake controller module. As your trailer likely only has a 4-way you can use the Adapter # HM47365 to make the trailer connector plug and play.

If you can provide me information on your surge coupler I can help you find a replacement Coupler # DM15000-52 so you do not have to worry about it falling apart over time.

expert reply by: Bud M

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Answer 1

Drum and disk brake actuators use different pressures for operation. Drum brake actuators typically produce 1000-psi pressure while disc brake actuators produce 1500 or 1600-psi pressure. The higher pressure of a disc actuator could blow out the…

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Answer 2

It looks like your batteries are wired in parallel so the positive cable of the NOCO Genius Smart Battery Charger #329-GENIUS10 can be ran to the positive post on one battery and the negative cable from the charger can be ran to the negative post on…

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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

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 5

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 6

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 7

The Demco Hydraulic Trailer Brake Actuator part #DM72VR should be a direct replacement for the Atwood 61101 Brake Actuator that you have now. This newest updated it rated at 7K instead of 6K. This is a bolt on option that mounts on 3" centers.…

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Answer 8

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 9

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 10

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 11

Hi Calvin! All of the pre-greased hubs/drums, like the Terran Industries Trailer Hub and Drum Assembly - 3.5K Axles - 10" Diameter - 5 on 4-1/2 #TX68VJ, come with bearings made overseas and are all basically the same quality. At least that I…

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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 Electric Over Hydraulic Actuator For a Tandem 3,500lb Axle Boat Trailer

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