#Trailair pinbox install
#Trailair pinbox plus

(Go to my Fifth Wheel Manufacturerspage for links)ĭRV Mobile Suites (Heavy Rig): * MOR/ryde LRE Rubber Equalizer Suspension, Kodiak Automotive Disc Brakes, photos show they use the Morryde pin. I looked at luxury models in the 16,500 pound gross weight range and above: I took a quick look in 2015 to see what a few are using on their stock trailers. You really need to read what each manufacturer says about their pins for a better view: For example the Morryde independent suspension absorbs 5 1/2 inches of up and down motion but adds up to four hundred fifty pounds of weight with 8,000 pound (axle) ratings. As I studied I also paid attention to the various trailer suspension systems as some allow for better travel distances up and down. Having the trailer level when towing makes a difference. In other words if the pin or whatever causes the trailer to ride high or low when hooked to the hitch that takes away from the ride. I could see trailer movement rocking the truck up and down. Also would the pin weight of the fifth wheel make a difference in that the movement up and down would be transferred to the trucks suspension. I also wondered if the fifth wheel hitch would have a great effect on the up and down motion. I guess one question would be does the Flexair do a better job with the longitudinal and lateral movement which is the chucking motion. Seemed like the Flexair, which is replacing the Trailair, had all the bases covered in their design. There are several directions in movement that effect the ride:Īs I researched each of the above pins I had to consider side to side movement with back and fourth (called longitudinal and lateral), as well as up and down movement. Oh, almost forgot, you have to consider what axle and brakes to use. For example if you have an air bag on the pin and the hitch. More important, some are saying one system may work against another. But others say the Morryde pin takes care of the “chucking” which is the jerking motion and then use air bags on the trailer hitch to handle the up and down issues. Does a combination work better? Some use the Morryde independent suspension which allows better up and down travel while using an air bag system for the pin. What pin box, what fifth wheel hitch and what suspension system. There are actually three decisions to make here. Here is a link to the Lippert solution called the Whisper disc.

#Trailair pinbox plus

According to Lippert “The Flex Air Pin Box combines our time-tested Trailair air ride technology with our Rota-Flex pivoting head to create an unparalleled ride, eliminating chucking and the vertical tug-of-war between the fifth-wheel and tow vehicle.” Trading out a pin box is about an $1,100 plus expense.Īs a side note, I’ve read about people placing a disc on the pin of the pin box above the hitch. I’ve heard Lippert is doing away with the Trailair and replacing it with the Flexair.

Suppose one has to also consider what pin box works well with any given suspension system as the two work together along with the actually fifth wheel hitch. Or join the crowd that are removing the pin from their brand new rig and replacing it with something else. Maybe I’ll have to have a second choice for a pin box as well. The only problem in there are some fifth wheels (in 2015) that I’m interested in that don’t offer it. This would be an easy decision if every fifth wheel builder had an option to use any of the above. It uses adjustable air bags like the Trailair. 5th Airborne by Reese is another popular one.Not sure but it might be limited to an 18,000 pound capacity. Their newer pin is the Trailair -Flex Air. Seems like the luxury and high end units, if not using Morryde, are going with Trailair – Air Ride which is Lippert product.

#Trailair pinbox install

Although it looks like a fairly straight forward install if you want to switch the pin box out yourself. Then taking the rig to the Morryde factory and having their box installed. Lots of folks are buying rigs without the Morryde pin box. Most everything I’m reading and most everyone I talk to direct me to the Morryde box.So I don’t have a need for a hitch that slides which would be required for a short bed truck. I’m going to purchasing a long bed truck for the fifth wheel hitch.Here is a good list from Trailer Lifein 2012.I plan on getting it right the first time. Having to trade out the pin later is at least a $600 mistake and maybe as high as $1,300 – plus installation. Others recommend sticking with the same manufacturer for both applications.

A few people recommend miss-matching the pin with the suspension and the truck hitch. This is the part of the fifthwheel that attaches to the trailer hitch. Go to my post titled RV Construction Methods – Pin Boxfor a summary and what I’ve decided to go with.