bing tracking image
Memorial Day Deals Are Here!
SAVE NOW
Customer Service My Orders
  1. Home
  2. Help Videos And Articles
  3. A-Frame Trailer Coupler Help Hub
  4. A-Frame Trailer Coupler Q&As
  5. Question 18716
Q & A Icon

How to Measure the Angle of Trailer A Frame To Determine if a 50 Degree A Frame Coupler will Fit  

Updated 11/05/2010 | Published 11/04/2010



Question:

How do I take the measurement to determine degree of my trailer?

0

Expert Reply:

I would use a protractor, see photo, place the protractor on the edge of the inside of one side of the trailer frame and the other inside edge of the trailer frame should be parallel with the 50 degree line on the protractor.

Another way to verify the angle is to measure the angle where the frame meets the cross member for the trailer bed itself. This angle should measure 65 degrees on each side, which will give you a 50 degree angle for the coupler.

The standard dimension for trailer tongues is 50 degrees so most likely the tongue on your trailer will accept the Atwood A-Frame Undermount Trailer Coupler, item # CA-5335-B.

expert reply by:
0
Bob G
click to enlarge
Ask The Experts a Question >>

Product Page this Question was Asked From


Q & A Icon

Continue Researching

See More Q&A Expert Answers >>
Explore Expert Info Our Expert
on A-Frame Trailer Coupler

Videos

Help Articles

Expert Answers

Others Also Watched
etrailer Electric Drop Leg Trailer Jack with 7-Way Feature Breakdown
etrailer Electric Drop Leg Trailer Jack with 7-Way Feature Breakdown
Review of etrailer Trailer Jack - Electric Trailer Jack - e72QV
Review of etrailer Trailer Jack - Electric Trailer Jack - e72QV
A Closer Look at the etrailer A-Frame Trailer Coupler
A Closer Look at the etrailer A-Frame Trailer Coupler
Installing the Demco 50-Degree A-Frame Trailer Coupler on a 2020 Mantis Travel Trailer
Installing the Demco 50-Degree A-Frame Trailer Coupler on a 2020 Mantis Travel Trailer
Review of Lippert White Rivet Better Bath RV Shower Pan Bathtub Surround - LC210278
Review of Lippert White Rivet Better Bath RV Shower Pan Bathtub Surround - LC210278
Demco Cast Head Coupler w/ Jack Hole Spec Review
Demco Cast Head Coupler w/ Jack Hole Spec Review
Demco eZ-Latch A-Frame Trailer Coupler Comprehensive Review
Demco eZ-Latch A-Frame Trailer Coupler Comprehensive Review
Complete Breakdown of the A-Frame Trailer Coupler
Complete Breakdown of the A-Frame Trailer Coupler
Comprehensive Review: Durabilt Safety Chain Connectors for 3/8" Chain
Comprehensive Review: Durabilt Safety Chain Connectors for 3/8" Chain
Demco Explains the EZ Latch: The Coupler That Latches Itself
Demco Explains the EZ Latch: The Coupler That Latches Itself
Review of Demco A-Frame Trailer Coupler - EZ Latch Coupler - DM16680-52
Review of Demco A-Frame Trailer Coupler - EZ Latch Coupler - DM16680-52
Breaking Down the Ram 5-Position Adjustable Channel Bracket for Couplers
Breaking Down the Ram 5-Position Adjustable Channel Bracket for Couplers
Others Also Read
How to Wire an Electric Winch
How to Wire an Electric Winch
5 Things to Know About Weight Distribution Hitches
5 Things to Know About Weight Distribution Hitches
Parts Needed to Add Electric Drum Brakes to a Trailer
Parts Needed to Add Electric Drum Brakes to a Trailer
Trailer Couplers
Trailer Couplers
Trailer Wiring Diagrams
Trailer Wiring Diagrams
Brake Controller Installation on a Full-Size Ford Truck or SUV
Brake Controller Installation on a Full-Size Ford Truck or SUV
Brake Controller Installation on a Ford Full-Size Van
Brake Controller Installation on a Ford Full-Size Van
How to Choose a Trailer Hitch Coupler
How to Choose a Trailer Hitch Coupler
Where to Position the Trailer Axle?
Where to Position the Trailer Axle?
The Best Electric Trailer Jacks of 2025
The Best Electric Trailer Jacks of 2025
Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
My Trailer Hitch Doesn't Fit
My Trailer Hitch Doesn't Fit
Others Also Asked
What Is The Angle For The etrailer A-Frame Trailer Coupler?

The etrailer A-Frame Trailer Coupler w/ Round Jack Hole #CA-5280-RB uses the standard a-frame angle of 50 degrees. The length from the rear of the coupler to where the coupler meets its narrowest point is approximately 9" long. I have include…

view full answer...
Can I Use the Demco eZ-Latch Gooseneck Coupler on My Texas Pride Gooseneck Trailer?

Hello Danny, Does that mean that your trailer is bigger than all the others, just like everything else in Texas..... bad joke, I know. I have not heard of any issues with the Texas Pride and not being able to use the Demco eZ-Latch Gooseneck Coupler…

view full answer...
Difference Between Trailer Tire Sizes ST205/75R15 and ST225/75R15

The two sizes you mentioned are pretty similar and fit many of the same 15 inch wheels. The 205/75-15 fits rim widths of 5 inch to 6 inch whereas the 225/75-15 fits widths that are 5 inch to 6-1/2 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

view full answer...
How to Measure Trailer Frame Angle for Coupler

You'd just have to physically go out to your trailer and measure the angle. So to do this, you'd need to get a protractor or something similar and place it on the edge of the inside on one side of the trailer frame, and check to see if the…

view full answer...
What Grade Bolts to Install Demco A-Frame Cast Head Coupler

Hey Rylan, I checked with Demco for you, and the Demco A-Frame Cast Head Coupler #DM37ZR will need Grade 5 hex bolts for installation. We don't have these but they can be found at any local hardware store.

view full answer...
Replacement Hub/Rotor for UFP 41030

Hey Brandon, the UFP hub/rotor that you have is basically a Dexter 3,500 lb hub/rotor which we have that with the part #K08-435-05. Worth mentioning is that UFP was bought by Dexter so they brands are basically the same now.

view full answer...
Can Atwood 91602 Gas Regulator Be Replaced or Do I Need a New Water Heater?

The 91602 gas regulator you're trying to find was discontinued which is why you're having issues finding it. Since this is the case you'll actually need to replace your entire water heater unit as there aren't any replacement gas…

view full answer...
Are 50 Degree A-Frame Couplers Standard for A-Frame Trailers

The 50 degree a-frame trailer angle is the standard angle for a-frame trailers so it would be almost guaranteed that this Demco Coupler part #12660-97SP would fit perfectly. I don't have a way to open your picture but as long as the frame members…

view full answer...
Recommended H-Channel for an Enclosed Trailer

The closest we have to match those measurements is going to be the H-Channel for Enclosed Trailer #36281-955 which has an internal width of 1.027" and a height of 2". We do also have a C-Channel #362213-955 which has an inside measurement…

view full answer...
Choosing the Correct Rise/Drop for Lock N Roll Articulating Hitch

The #336VS503515 comes with the adjustable channel bracket along with the adjustable channel mount and bolts. You will need to install the channel mount in the appropriate rise/drop position since it does not come fully assembled. It looks like you…

view full answer...
Troubleshooting 7-Way Trailer Wiring with Colors That Don't Match Functions

Wiring by function is the route to go for your situation. This is done by testing each wire of your trailer individually. The easiest way is to use a 12V battery and connect the negative terminal to the trailer's ground on the frame and then use…

view full answer...
Diagram Showing How Trailer Brakes are Wired

The brake wire providing voltage is wired in parallel, with one lead from each magnet being grounded to the trailer frame. We have a great Wiring Help Page that shows a diagram, I will provide a link to it below.

view full answer...