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Old 12-09-2014, 10:30 AM   #31
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Originally Posted by frieed View Post
That said, I'm at a loss to understand how the Timbrens could have an effect on sway since you need to dampen the change of angle between the trailer and truck. Squat?, yes, should work fine. Sway? not sure how.
Briefly; squishy rear ends contribute to sway. The problem is most notable in SUVs, but also somewhat in 1/2 ton trucks. Their primary suspension design focus is on ride comfort, secondary focus is on heavy load management. So softer suspension equals more comfortable ride. The Timbrens (or airbags, or RAS) act to stiffen up the rear suspension under load, thereby contributing to the reduction in sway. The concept builds on and is similar to your replacement of P-rated tires with E-rated tires. The E-rated tires not only better handle the vertical load forces via increased load carrying capacity, but their stiffer sidewalls contribute to lateral stability as well, which further contributes to the reduction of sway.
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Old 12-09-2014, 04:17 PM   #32
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Originally Posted by Camper_bob View Post
Briefly; squishy rear ends contribute to sway. The problem is most notable in SUVs, but also somewhat in 1/2 ton trucks. Their primary suspension design focus is on ride comfort, secondary focus is on heavy load management. So softer suspension equals more comfortable ride. The Timbrens (or airbags, or RAS) act to stiffen up the rear suspension under load, thereby contributing to the reduction in sway. The concept builds on and is similar to your replacement of P-rated tires with E-rated tires. The E-rated tires not only better handle the vertical load forces via increased load carrying capacity, but their stiffer sidewalls contribute to lateral stability as well, which further contributes to the reduction of sway.
What he said They do actually help in that regard, I am also fairly certain my problem with bouncing had to do with me not adjusting the hitch after installing the Timbrens. I did get the "replacements" from Timbren, they are a good 1" shorter, or about 1/2" taller than the factory bumpstops. I really do not see those working, the truck does not squat enough for them to even make contact.

With that said, I have pretty much decided just to move up to 3/4ton truck, even if I get the Timbrens to work, I still have the payload issue.
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Old 12-10-2014, 11:06 AM   #33
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Yeah, I would say if the Timbrens are not compressed against the axle under load, you will have problems. The factory suspension will give pretty easy, then the Timbrens will engage causing a pretty severe bump I would imagine. However, if the Timbrens are in constant contact with the axle under load, and even a bit compressed, I would think they would work better that way. The Timbrens are not a "progressive" system (like the RAS) where their action increases as the load increases. The Timbrens are either on or off, and if you're in between somewhere, I would think it would be a pretty rough ride.

After all that, I'm in your boat, I'm bumping up against the upper limits of my payload, so 3/4 ton truck is in the plans... Good luck, and happy hunting!
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Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!
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