any one have bouncing issuse with a long bed

Oh of course ill play around with that a bit and would do the shocks before i went to the welding stage...just willing to do whatever to get her right

 

The only reason i think this is a problem and not just truck being a truck is ill be following short bed tacos on the highway and there ass is riding flat but mine is bouncing all over...so just trying to see if its a long bed issue or maybe something isnt all the way right from the factory alignment on my rear but its been several times i can ride right next to a short bed and its a smooth as glass and mine like a tire is out of balance but i just rotated them and still the same

 

I do have 5100’s all around 2” front 1.5” aal. These trucks beds are light as hell. Yes suspension helps great for nose dive body roll etc. Replace stock suspension yes it will help. Happiness is in the eye of the beholder

 

Maybe there is a seized shock back there? Put your knee down on the bumper and see if it compresses equally side to side. Find a similar truck and compare

 

That just turned me off of Tundra permanently lol

 

Thought i read somewhere a lot of that was debunked due to being a ford commercial... they over inflated the tires on the other vehicles.

 

I am certain Ford stacked the deck. I am also certain it's real (big companies actually do get in trouble for false ads). Not actually that hard to get oscillations like that going, especially in a flexible frame like Toyotas.

That being said. It's a visual thing, and not necessarily a problem like Ford implied. Just because a frame flexes, does not mean it's bad. Ever watch a semi take off... Those things FLEX!

 

True

 

The tire pressure sticker on the door of my DCLB recommends 29 pounds.

 

5100 shocks make a huge difference. I replaced the front with 6112 shocks as well. The truck is firmer but soaks up the jarring impacts it once had. The wandering bouncy feeling at speed on the Hwy is gone. I am disappointed Toyota put such poor shocks in a modern Truck.

 

Fill up the rear diff, usually they are under filled from the factory...add more weight, check tire pressure...

 

You want to see flex...watch a 8000 hp top fuel dragster leave the line.

 

You REALLY want to see some flex, watch a slinky go down the stairs . . .

 

You want to see flex, watch me go down stairs...

 

Maybe it’s just me, but I’ve had a DCLB for a few weeks now and I haven’t felt any bounce yet. I test drove a bunch of DC’s and I think the LB is actually smoother.

 

It does depend on roads, many highways have waves in them just how the machine lays down the concrete. I think its mainly a wheelbase length vs length of waves in the highway that causes this.

When I worked for VW, we had one customer who constantly complained about his new CC bouncing. No tech could reproduce it, so I drove it for a day. The highway by my house had terrible waves and instantly I reproduced the condition. But it only did it on this one 5 mile stretch of road. We ended up telling the customer the car was fine, it was the road that caused the issue for him. But he didnt like that because he drove the same road every day.

Short waves. Causes can are numerous but most relate to items that can cause frequent or periodic changes in the screed angle of attack, and corresponding changes in mat thickness. Likely causes include:

• Fluctuation of material head in front of the paver screed. As the material head changes, the screed angle and elevation will change. This fluctuating head can be caused by excessive auger starts and stops or an improperly set material feed rate. Fluctuations may cause either short waves or non-uniform texture.
• Screed in poor mechanical condition. Screeds with excessive play in their controls may fluctuate slightly around the equilibrium screed angle.
• Unresponsive screed. Extremely high paver speeds, in excess of 25 m (83 ft) per minute for thin lifts or more than 15 m (50 ft) per minute for thick lifts (more than 62.5 mm (2.5 inches) thick), can cause to screed to be relatively unresponsive.
• Improper mounting, operation or sensitivity of the automatic screed control system. If the screed control system is improperly mounted, operated, or it is too sensitive it could supply a fluctuating grade reference causing the screed to fluctuate in response.
• Truck driver applying the breaks too hard while being pushed by the paver. If break application is too much the paver tracks or wheels may slip, which will cause a change in material head in front of the screed.
• Improper mix design. Mixtures whose stiffness is extremely sensitive to temperature of composition may compact differentially. Tender mixes may shove and displace as they are compacted.

Long waves. Causes can be numerous and involve truck, paver and roller operation. Likely causes include:

• Fluctuation of material head in front of the paver screed. If the problem as described under “short waves” occurs over a longer time interval it can result in long waves.
• Screed in poor mechanical condition. Screeds with excessive play in their controls may fluctuate slightly around the equilibrium screed angle.
• Improper mounting or operation of the automatic screed control system. If the grade control system is improperly mounted or operated it could supply a slowly changing grade reference causing the screed angle to slowly change in response. If a stringline is used, sagging between support posts can cause long waves.
• Improper mix design. Mixtures whose stiffness is extremely sensitive to temperature of composition may compact differentially. Tender mixes may shove and displace as they are compacted.
• Emptying the paver hopper between truck loads. This can be caused by improperly adjusted hopper flow gates or poor operating practices. As the material is emptied and there is none to replace it in front of the screed, the material head in front of the screed will decrease.
• Compaction equipment operation. Direction reversals, especially on lifts that are quite thick in relation to nominal maximum aggregate size, can leave bow waves in place at the point of direction reversal. Abrupt roller turns can also cause mix shoving.
• Segregation.
• Temperature differentials.

 

Yeh, but a slinky doesn't have wheels.

 

Want to see flexible. I know a girl that can bend over backwards and touch the floor with her head.
But back on topic, if it’s bouncing vary your speed. Some times that will remove road hop. Once you get the suspension moving it can just self propagate. Change any one of the variables and it may stop.