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Old 03-10-2014, 09:47 PM   #1
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TrailAir pin box

I recently had a TrailAir Pin Box installed on Redwood 36 RE. On my only drive since, the Redwood and my Ford F 250 bounced more, it seemed, than before. Does anyone know if this is normal or maybe I don[t have the air pressure at the correct level in the pin box air bag. Does anyone know? My pin box now has an air bag and the shock absorber. I have suspension air bags installed on my F250 also.

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Bill Rush
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Old 03-10-2014, 11:05 PM   #2
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Bill, you need to put more air in the bag. I run mine above the arrows that are on the shock.
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Old 03-11-2014, 01:17 AM   #3
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It becomes a trial and error setup. Too much pressure in the bag and you negate its' design, too little air and it will be like it's riding on a bouncing ball.
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Old 03-11-2014, 01:28 AM   #4
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Dave is right on, the key is getting enough air in the hitch to smooth out the bumps. We too fill ours to where the top of the arrows are just showing, this really gives us a great ride.

We also have the Air-Lift on our truck which also helps smooth out the ride.

It takes time to get the best combination, we tried a few different adjustments before we got what we like...take your time and tweak it to your liking.
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Old 03-11-2014, 02:11 AM   #5
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Originally Posted by 0nTheRoad View Post
Dave is right on, the key is getting enough air in the hitch to smooth out the bumps. We too fill ours to where the top of the arrows are just showing, this really gives us a great ride.

We also have the Air-Lift on our truck which also helps smooth out the ride.

It takes time to get the best combination, we tried a few different adjustments before we got what we like...take your time and tweak it to your liking.
My head is almost spinning with all the new info. It's hard to keep up! We have a Trail Air Pin Box factory installed and will have an 18K Reese hitch installed once we bring our tow vehicle to the dealership. Should we also install "pillows/air-lifts" on the truck too? I have heard to install a B &W hitch, but we will only use the truck to tow the Redwood, and won't need a goose-neck for towing anything.

Thanks!
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Old 03-11-2014, 02:54 AM   #6
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I found the air bags on the truck really helped to smooth put the harsh ride in the truck when traveling over rough roads or bridge approaches. In the event of a real hard bounce it can eliminate a spring bottom out followed by a sharp upward thrust, which can lead to serious chucking.
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Old 03-11-2014, 03:00 AM   #7
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I found the air bags on the truck really helped to smooth put the harsh ride in the truck when traveling over rough roads or bridge approaches. In the event of a real hard bounce it can eliminate a spring bottom out followed by a sharp upward thrust, which can lead to serious chucking.
Thank you Sinder!

So, what does air bags look like for a Reese 18K hitch on a F350 4X4? Pictures help! (I'm a visual person!)
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Old 03-11-2014, 03:04 AM   #8
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Bill, was the trailer empty? I found that when my trailer was empty I had to reduce the pressure in the trail air a bit because the ride was too harsh. Once loaded, I aired up to the top of the arrows and it rides nice. I do not have any sort of air suspension on my truck. Good luck
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Old 03-11-2014, 03:31 AM   #9
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Bill I installed Firestone air bags on the truck. They attach to the axle. You already have the trail air pin, so I would not recommend getting an air bag system integrated with a hitch. Doing so will certainly cause towing issues because they negatively act against each other. Truck air bags can be installed by yourself or I've seen on the forum that Good Sam has a low cost install charge. Before you purchase airbags you may want to take your new rig for a short trip to see how it rides. You may find you do not need make any changes.
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Old 03-11-2014, 03:40 AM   #10
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Just got Airlift airbags installed at Camping World. Just give them details of the truck and they order the correct bags. Install price was $39 for the bags and $39 for the compressor.

Makes a huge difference when towing the coach, especially over rough roads, bridges, etc.
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