Base plates are the first piece of a five-part puzzle: base plates, tow bar, wiring, safety cables and braking systems. Base plates are the only part of the puzzle that is vehicle specific. A dinghy, or vehicle being towed, requires custom-designed base plates that specifically fit its frame.
Roadmaster Base Plate Styles
Roadmaster base plates are made in two styles - quick disconnect and direct connect. These styles differ in how the tow bars connect to them.
Roadmaster Quick Disconnect Style Base Plate
Quick disconnect style base plates have arms that terminate in a flat surface. Roadmaster tow bars (both quick disconnect and direct connect) can be attached to this style base plate. Each type of tow bar uses a crossbar and quick disconnect hardware to attach to these base plates, although the crossbar os the Tracker model can be bolted directly to the base plates for a more permanent connection.
Roadmaster Base Plate Differences
Classic - Old style design without removable arms
XL - Removable arms held in place with pin and clips
EZ and EZ2 - Removable arms twist-lock into place
EZ4 - Removable arms are spring loaded and twist-lock into place
Roadmaster Direct Connect Style Base Plate
The arms of direct connect style base plates terminate with a set of two tabs that receive the lugs at the ends of the tow bar arms. The tow bar arms can be easily positioned then connected with pins. Roadmaster's coupler style tow bars - Stowmaster and Tracker - will not work with these base plates.
Roadmaster Base Plate Differences
MS - Arms are not removable
MX - Removable arms held in place with pins and clips
EZ5 - Removable arms are spring loaded and twist-lock into place
Design and Construction
Consist of two main parts:
Frame Bracket(s)
Mounts directly to the dinghy's frame
Drawbar arms
Are either welded to the frame brackets or removable
Provide attachment points for the tow bar
Install on dinghy's frame using as many existing attachment points as possible without sacrificing strength and safety
When multiple base plate kits are available for a specific vehicle, they will install in similar ways, using the same points on the frame. The differences lie in the drawbar type and whether the base plates come as one or two pieces.
The type of base plates available for any given vehicle depends on the vehicle's frame type
Larger vehicles can have base plates brackets that come as two separate pieces because the vehicle frame is strong enough to handle the stresses of towing
Smaller vehicles may come with a one-piece bracket to reinforce the vehicle frame for towing
Designed for vehicles with heavy-duty frames (trucks and SUVs)
Removable drawbar arms
Arms of base plates attach directly to the telescoping tow bar arms
Does not require crossbar or quick disconnects
Speeds up hooking-up process
Looks better than standard, XL or EZ base plate connection
The drawbar arm is a two-prong fork that a pin is inserted through to attach the plates to the tow bar arm
Not compatible with accessories that require quick disconnects
Compatible with Roadmaster motor-home-mounted tow bars
Connecting Roadmaster Base Plates to Tow Bars
There are three ways that base plate arms can be connected to the tow bar. The type of connection depends on the type of base plates you have.
Standard, XL and EZ base plates
Use quick disconnects to conveniently attach the drawbar to the tow bar crossbar
Quick disconnects come as two parts: Half of the quick disconnect bolts to the crossbar of the tow bar; the other half bolts to the base plate
After initial installation, you can connect the tow bar by sliding the tow bar and drawbar arm quick disconnects together and securing them with a pin and clip
Bolt the base plate drawbar arms directly to the tow bar crossbar
Each time you attach the tow bar to the base plates, the crossbar and drawbar arms must be bolted together
MS and MX base plates
Conveniently attach drawbar arms directly to the tow bar arms using a pin and clip
Simplest hookup
Does not require intermediate quick disconnects or crossbar
Base Plate AdapterA tow bar adapter allows a tow bar to work with base plates from a different manufacturer. So, for example, you can use a Blue Ox tow bar to tow a dinghy that has Roadmaster base plates
The tow bar side of an adapter has prongs that correspond to the tow bar attachment points
The dinghy side of an adapter has connection points that correspond to the base plate attachment points
If you have a Roadmaster product, there is a great way to think about the adapters and to figure out which one you need
Determine which part of your towing set up is from Roadmaster. Depending on which part is from Roadmaster, the type of adapter needed will fall into one of two categories:
Adapters to Roadmaster base plates
These adapters convert a tow bar from a different manufacturer, like Blue Ox or Valley, to work with Roadmaster base plates
All adapters that convert a tow bar to work with Roadmaster base plates require quick disconnects to link the two products
Some adapters come with quick disconnects. You may need to purchase quick disconnects separately.
Adapters from Roadmaster towbars to base plates from a different manufacturer
Allows Roadmaster tow bar to tow a dinghy with base plates from a different manufacturer (e.g., Blue Ox or Demco)
Adapters connect directly to the telescoping arms of the Roadmaster tow bar
The Roadmaster tow bar crossbar is removed and replaced with the adapter
Pins and clips attach the adapter to the Roadmaster tow bar arms and to the base plates
There are no adapters available for the standard Stowmaster and Tracker tow bars
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