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Will the Reese Goose Box Work with a Knapheide Flat Bed on a Ford F-550


I have F-550 ford knapheide bed gooseneck top of ball height 40inch off ground 61inch to back of bed Im pulling 375res-r Solitude 135inch tall will this work for me


Expert Reply:

I do have some dimensions of the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter part # RP94720 that will be helpful for you as well as a formula that will allow you to determine clearance but I unfortunately cannot provide you with a yes or no answer based on the information that was given.

In regards to height, you will need to measure from the ground to the base of the ball where it sits in the truck bed and then from the ground to one of the holes on the pin box while the trailer is level. The attached photo will then give you a good idea of how the trailer is going to sit. If need be, we have ways to lift the trailer so that the you can tow level while using the Goose Box. For example, if you have round axles then you can use something like the Dexter Trailer Springs Over-Under Conversion Kit part # K71-384-00. The majority of cases where we see people towing with a newer truck, the trailer needs to be lifted in order to tow level because trucks today continue to get taller and taller.

In regards to clearance, you can use the formula I have attached for you below to make sure you don't have any run-ins between the cab of your tow vehicle and loft of your trailer.

(A + B) - C = Clearance

A = Distance from center of hitch ball to truck cab

B = Distance from center of Goose Box to front loft on trailer

C = Width of trailer divided by 2 (to get half)

NOTE: At least 4 inches of clearance is recommended to safely execute a 90 degree turn.

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expert reply by:
Conner L

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