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TrailAir RotaFlex - Opinions

majorgator
Explorer
Explorer
We have quite a bit of chucking going when pulling our 5er...makes going over those bumpy bridges almost unbearable.

Hitch is a Resse 18K slider similar to this model: Reese Slider

Our 5er is a Wildcat 29BHP, probably somewhere around 10K to 11K loaded. Truck is 1996 F350 7.3 CCLB 4X4.

Surprisingly, I couldn't find much info on the first 10 pages or so of the search engine on here related to the TrailAir RotaFlex pin box upgrade for lippert frames. It is essentially the base model pin box upgrade in the TrailAir product line, and it claims to "significantly reduce chucking".

Does anyone have any experience with this to confirm (or deny) this claim or whether or not this is a good upgrade? Presumably, the higher end lines of the pin boxes offer better ride quality, but the price for the RoatFlex is reasonable enough to be considering it right now.
SAVED BY GRACE, THROUGH FAITH*
1998 Coachmen Catalina Lite 248TB
TV: 1996 F350 Crew Cab 4x4 7.3L Diesel (a man's truck)

*signature amended so that religious components aren't included (per "Admin")...hooray, now nobody will be offended by my personal beliefs
13 REPLIES 13

Garyl53
Explorer
Explorer
subscribed. fighting chucking also.
Garyl53
Just me, wife and 2 small dogs
2011 F250 CCSB 6.7L PSD SRW 4x4 Camper/Plow/FX packages: Andersen Hitch, AirLift 5000 Bags, Bilstein 5100s
2017 Redwood 36RL

majorgator
Explorer
Explorer
rhagfo wrote:
majorgator wrote:
We have quite a bit of chucking going when pulling our 5er...makes going over those bumpy bridges almost unbearable.

Hitch is a Resse 18K slider similar to this model: Reese Slider

Our 5er is a Wildcat 29BHP, probably somewhere around 10K to 11K loaded. Truck is 1996 F350 7.3 CCLB 4X4.

Surprisingly, I couldn't find much info on the first 10 pages or so of the search engine on here related to the TrailAir RotaFlex pin box upgrade for lippert frames. It is essentially the base model pin box upgrade in the TrailAir product line, and it claims to "significantly reduce chucking".

Does anyone have any experience with this to confirm (or deny) this claim or whether or not this is a good upgrade? Presumably, the higher end lines of the pin boxes offer better ride quality, but the price for the RoatFlex is reasonable enough to be considering it right now.


Well lots of great opinions on the Trail- Air hitch and how well it works to MASK chucking issues.

You have no need to an air hitch with that TV and trailer!!!

Fix the root cause of the chucking and be much happier.

#1. get a great set of shocks on the TV Bilstein's your choice 4600's or 5100's both will smooth the ride.

#2 Is the 96 F350 DRW or SRW? Either way if you have adjust the air pressure in your rear tires to match the load. I only run 65 to 70 pis in my 265/75-16 E's rated at 3,415# ea. Riding on rocks is for the Flintstones!

#3 Make sure you have at least or very close to 20% pin weight. my 11,000# wet 5er has between 2,000# and 2,200# of pin. If the fresh water tank is over or forward of the trailer axles run with it full.

#4 Get the 5er to tow as level as possible, nose high will increase the effect of expansion joints.

#5 Get shocks on the 5er! Most don't come with shocks makes a great difference going across bridges and bridge transitions.

I had some chucking issues, but after the steps above I now tow smooth!

We're good on #1 and #2. Never paid much attention to pin weight, so that could be something to consider. Currently rides a little bit nose up, but I can't adjust the hitch any lower or pin box any higher. Shocks for the 5'er are one the consideration list.
SAVED BY GRACE, THROUGH FAITH*
1998 Coachmen Catalina Lite 248TB
TV: 1996 F350 Crew Cab 4x4 7.3L Diesel (a man's truck)

*signature amended so that religious components aren't included (per "Admin")...hooray, now nobody will be offended by my personal beliefs

rhagfo
Explorer III
Explorer III
majorgator wrote:
We have quite a bit of chucking going when pulling our 5er...makes going over those bumpy bridges almost unbearable.

Hitch is a Resse 18K slider similar to this model: Reese Slider

Our 5er is a Wildcat 29BHP, probably somewhere around 10K to 11K loaded. Truck is 1996 F350 7.3 CCLB 4X4.

Surprisingly, I couldn't find much info on the first 10 pages or so of the search engine on here related to the TrailAir RotaFlex pin box upgrade for lippert frames. It is essentially the base model pin box upgrade in the TrailAir product line, and it claims to "significantly reduce chucking".

Does anyone have any experience with this to confirm (or deny) this claim or whether or not this is a good upgrade? Presumably, the higher end lines of the pin boxes offer better ride quality, but the price for the RoatFlex is reasonable enough to be considering it right now.


Well lots of great opinions on the Trail- Air hitch and how well it works to MASK chucking issues.

You have no need to an air hitch with that TV and trailer!!!

Fix the root cause of the chucking and be much happier.

#1. get a great set of shocks on the TV Bilstein's your choice 4600's or 5100's both will smooth the ride.

#2 Is the 96 F350 DRW or SRW? Either way if you have adjust the air pressure in your rear tires to match the load. I only run 65 to 70 pis in my 265/75-16 E's rated at 3,415# ea. Riding on rocks is for the Flintstones!

#3 Make sure you have at least or very close to 20% pin weight. my 11,000# wet 5er has between 2,000# and 2,200# of pin. If the fresh water tank is over or forward of the trailer axles run with it full.

#4 Get the 5er to tow as level as possible, nose high will increase the effect of expansion joints.

#5 Get shocks on the 5er! Most don't come with shocks makes a great difference going across bridges and bridge transitions.

I had some chucking issues, but after the steps above I now tow smooth!
Russ & Paula the Beagle Belle.
2016 Ram Laramie 3500 Aisin DRW 4X4 Long bed.
2005 Copper Canyon 293 FWSLS, 32' GVWR 12,360#

"Visit and Enjoy Oregon State Parks"

majorgator
Explorer
Explorer
diftw wrote:
We have the Trailair Rota-Flex. Seems to work very nicely.

Thank you for your response!!!
SAVED BY GRACE, THROUGH FAITH*
1998 Coachmen Catalina Lite 248TB
TV: 1996 F350 Crew Cab 4x4 7.3L Diesel (a man's truck)

*signature amended so that religious components aren't included (per "Admin")...hooray, now nobody will be offended by my personal beliefs

majorgator
Explorer
Explorer
ken burke wrote:

When we first bought our 5th wheel, we had a real problem with "chucking". The dealer insisted it was normal for 5th wheels. I fought this battle for several months. Finally I got support from Reese (I have a 20k 5th wheel hitch). They came out to our Cedar Creek dealer and looked at the hitch. They said that the hitch was made in-correctly, and gave me a new hitch. What a world of difference the new hitch made.
You may want to find out the real problem of the chucking before fixing anything. You need to know the root problem of the chucking.
I have a TrailAir pin box with the old TrailAir jaw attachment. It works well.

Until now, I had not considered that there may be a problem with the hitch. Did they indicate how exactly the hitch was made incorrectly? I'm wondering if there's a way to examine this myself and/or test it. When we hitch up, everything appears to be nice and tight.
SAVED BY GRACE, THROUGH FAITH*
1998 Coachmen Catalina Lite 248TB
TV: 1996 F350 Crew Cab 4x4 7.3L Diesel (a man's truck)

*signature amended so that religious components aren't included (per "Admin")...hooray, now nobody will be offended by my personal beliefs

diftw
Explorer
Explorer
We have the Trailair Rota-Flex. Seems to work very nicely.
Dave and Anne
2016 Grand Design 337RLS
2015 Ford F350 XLT 6.7l 4x4
Reese Elite 18K Hitch
Rotochocks
Rota Flex by Trail Air Pin Box
Barker 4-wheel 25 gallon tote
Nights Camped in 2009 - 33
2010 - 37
2011 - 31

2012 - 35
2013 - 42
2014 - 45
2015 - 46
2016 - 51
2017 - 43

ken_burke
Explorer
Explorer
majorgator wrote:
We have quite a bit of chucking going when pulling our 5er...makes going over those bumpy bridges almost unbearable.

Hitch is a Resse 18K slider similar to this model: Reese Slider

Our 5er is a Wildcat 29BHP, probably somewhere around 10K to 11K loaded. Truck is 1996 F350 7.3 CCLB 4X4.

Surprisingly, I couldn't find much info on the first 10 pages or so of the search engine on here related to the TrailAir RotaFlex pin box upgrade for lippert frames. It is essentially the base model pin box upgrade in the TrailAir product line, and it claims to "significantly reduce chucking".
Does anyone have any experience with this to confirm (or deny) this claim or whether or not this is a good upgrade? Presumably, the higher end lines of the pin boxes offer better ride quality, but the price for the RoatFlex is reasonable enough to be considering it right now.


When we first bought our 5th wheel, we had a real problem with "chucking". The dealer insisted it was normal for 5th wheels. I fought this battle for several months. Finally I got support from Reese (I have a 20k 5th wheel hitch). They came out to our Cedar Creek dealer and looked at the hitch. They said that the hitch was made in-correctly, and gave me a new hitch. What a world of difference the new hitch made.
You may want to find out the real problem of the chucking before fixing anything. You need to know the root problem of the chucking.
I have a TrailAir pin box with the old TrailAir jaw attachment. It works well.
2011 Ford F-350 6.7 diesel, Crew Cab, LB, SRW, 4X4, White
Cedar Creek 34SB, 37 feet 5th wheel, Reese 20K Hitch
"So many questions, so little time."

majorgator
Explorer
Explorer
Bad-Air wrote:
I have had a Trail Air since 2003, and it was great - except for the chucking! I was going to use it on my new FW, but it would not fit! I debated, but where I had good luck previously, I "bit-the-bullet" and went with the Rota-Flex, and NO chucking! Best move I ever made.
Now if I can find someone that wants my old one! Ha.

Thanks for the input, but your post confuses me a little bit. The Rota-Flex is a model of the TrailAir, but are you saying you're TrailAir still had chucking? What model was that?
SAVED BY GRACE, THROUGH FAITH*
1998 Coachmen Catalina Lite 248TB
TV: 1996 F350 Crew Cab 4x4 7.3L Diesel (a man's truck)

*signature amended so that religious components aren't included (per "Admin")...hooray, now nobody will be offended by my personal beliefs

Bad-Air
Explorer
Explorer
I have had a Trail Air since 2003, and it was great - except for the chucking! I was going to use it on my new FW, but it would not fit! I debated, but where I had good luck previously, I "bit-the-bullet" and went with the Rota-Flex, and NO chucking! Best move I ever made.
Now if I can find someone that wants my old one! Ha.
2009 Dodge Ram 2500 Quad Cab, 4 X 4, 6.7 Cummins, Jayco Eagle Premier 321RLTS, Pullrite Superglide hitch, BrakeSmart Brake Controller, 9' Fisher Snow Plow!!!
Summer I pull - Winter I push!

RustyJC
Explorer
Explorer
The best pin box extension I've used to eliminate chucking and fore/aft surging was the Demco Glide Ride. The Glide Ride eliminated probably 85% to 90% of the chucking we experienced with a previous 5th wheel that came from the factory with a solid pin box extension. I towed with it for about 9 years without any problems whatsoever. The Demco Glide Ride was standard equipment on the HitchHiker 5th wheels for a number of years.

Our current 5th wheel has the TrailAir tri-glide pin box extension. The air cushioning of the vertical loads is nice, and the tri-glide linkage (very similar to the Demco Glide Ride) works almost as well as the Demco.

Just another option.....

Rusty
2014.5 DRV Mobile Suites 38RSSA #6972

2016 Ram 3500 Dually Longhorn Crew Cab Long Bed, 4x4, 385/900 Cummins, Aisin AS69RC, 4.10, 39K+ GCWR, 30K+ trailer tow rating, 14K GVWR

B&W RVK3600

Bellpr
Explorer
Explorer
I'm also interested in this forum. The new 5er's we've looked at had the rotaflex king pin. not sure if it really works as well as the Air Ride king pin system.

majorgator
Explorer
Explorer
missourijan wrote:
We traveled for 5 years with our 36' 5th wheel and a regular king pin, then bought a new 5th wheel that came with the Trail Air king pin with air ride. A world of difference, the 5th wheel rides so much smoother over bumpy roads. Just floats along, highly recommend any brand of cushioned king pin that takes the "BAM" out of those bumpy roads. There's a lot of bad roads out there.

Sadly, the roads we were on weren't terribly bad. The roads in GA were a little bumpy, but our FL roads smoothed out pretty nicely...and still the chucking. The model I'm looking at isn't the AirRide, but it is cushioned so I'm hopeful that "anything will help".
SAVED BY GRACE, THROUGH FAITH*
1998 Coachmen Catalina Lite 248TB
TV: 1996 F350 Crew Cab 4x4 7.3L Diesel (a man's truck)

*signature amended so that religious components aren't included (per "Admin")...hooray, now nobody will be offended by my personal beliefs

missourijan
Explorer
Explorer
We traveled for 5 years with our 36' 5th wheel and a regular king pin, then bought a new 5th wheel that came with the Trail Air king pin with air ride. A world of difference, the 5th wheel rides so much smoother over bumpy roads. Just floats along, highly recommend any brand of cushioned king pin that takes the "BAM" out of those bumpy roads. There's a lot of bad roads out there.