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I'll rattle some cages and get this handled

There is additional droop but its not significant enough to affect drive line. The biggest factor in the arc the axle follows and thus the amount the drive line plunges is in the spring. An OE spring that is flatter and uses a block is different then an arched spring that eliminates the block...

NTM: Good info! Braking bumps are always hard to sort out. I don’t think the truck and especially the steering is tough enough to be subjected to too much of that in general. Features are features, tuning is subjective and a preference. We have the most features so finding what...

I just looked at what I posted again. My grammar and punctuation is horrible today. I must have drunk too much shock oil last night. Sorry if it is confusing or hard to read. Somebody should check me before they let me in here.

This really is a great thread. Thank you to everyone for being inquisitive and to the point. A few of you have been discussing body roll and spring rates. There are a couple of additional factors that influence roll. CG height vs. Roll center: When the vehicle gets taller the CG is...

The Raptor frame has a couple of issues that make it difficult to work with. The outside is formed for spring clearance and has very few flat surfaces to work with. Because its boxed gaining access to the inside to securely bolt to and distribute force is difficult. The bigger issue is that...

The compression ratio for a shock is kept as low as possible and usual way less than 2:1. The hydraulic bumpstop has a compression ratio from 8:1 for light apps and can go to theoretically infinity. For the raptor its 14:1. We can approximate the pressure to roughly double every time half the...

The bumpstops are hydraulic and nitrogen (air). I know the common nomenclature is misleading. Technically they are hydro-pneumatic bump shocks but if we refer to them as such then they would never pop up on the Google searches. The rebound rate is the hardest and most important part of the...

Aside from the fact that you have amazing luck???????? The repair we did is stronger now than it ever was. I don't think you need to do anything. The shock mounts don't always need to be clearanced and when they do it is a clearance as needed situation. "As needed" is a little vague and...

Yes Energy = Force X Distance If we simply dropped a truck from 10 ft we could take the potential energy of the mass of the truck at that height and equate it to (force X the travel of the suspension) for it to land and dissipate the energy. But because we are in a more dynamic and...

Not necessarily. Pressure IS a means to tune a bump but if too far from where the piston tuning and oil volume were meant to operate it could be a problem. The important point is that there is more to dissipating the energy then PSI and body diameter.

This dyno graph shows some of the characteristics of an air bump. The blue line is very slow so the hydraulic part is not influencing it very much and the shape is very close to just an air spring The red line is at 10 inches per second and shows the hydraulic effect add additional force...

An air bump is hybrid of a shock and an air spring. They can have some very odd characteristics however due to the fact that they are emulsion (gas and oil not separated), they are not connected to the axle, and the current impact partially depends on the previous impact(non linear). As an...

Our truck has stock rear springs. Until right before TRR it also had stock rear bump stops. I did however make a one-off gusset that went under the factory bump stop and on the inside of the frame when I first got the truck to prevent frame damage. I am in the process of designing a...

Get your terminology right! Its "assometer"

I would like to see some pictures of what you are talking about. If there is something wrong I will fix it. It is typical on any shock (stock or aftermarket) to see a zone of about 1" on the shaft that looks different whether it is chrome or nitro steel. This can be bluing from localized...

The tests are accurate and well done just not to the same stroke length. That is why it was assumed there were 2 zones in each direction when actually there are 3. (although you can see the third just starting to transition) A note on deciphering position sensitive date: It is very...

For those asking about stroke length in the position sensitive tests: At about -2.75" you can see the transition to zone 3 just starting. Had the stroke gone to -3.75" you would have seen a distinct step just like the Fox

Excellent write up! For those unclear on how ICON position sensitivity works here is a cutaway view showing how we achieve 3 zones in each direction as well as top out control

Please put me down for maybe I used to live up there and any excuse to go visit is good! Maybe bring our buggy too?

Count us in!! San Felipe is an awesome race and an awesome town. Mike sky ranch, Matomi wash and Zoo road are some of the most iconic sections of baja racing. The best fish taco's in the world

My truck is at the dealer right now with 2500 miles on it. Complete loss of power steering due to pump failure. I first noticed steering feedback and pump wine in the first 10 miles off road and burnt fluid. Many people have had this problem. I suspect there will be a recall. If there...