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Air Bump stops-Finished

sponsoredbydad

sponsoredbydad

Dune Slaying Sand Junkie
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Looking at Fox 2.0 Bumps. Wondering which (2' or 4") would be more suited for what I'm running. In case you don't know Front is Alcan 4" springs, zero rate, 14" 2.5 triple by-passes. I was thinking the 4" because with the can mounting you have some adjustment anyways and you can always add pucks inside to make them 2" if needed? While I've got this going how do you determine the height of the initial install. Would they start to touch/work somewhere during the last phase of the bypass or earlier?

9-26-2010 Cage 010 (Large).jpg
 
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I would get the 4" and plan to end up making them 3" or maybe 2" with spacers. You just add spacers inside and change the oil amounts is all.

Looks like your last tube on the shocks leaves about 2" of shock travel that is using all of the valving, and next zone down leaves about 4" of shock travel that is in one bypass zone only. This is a bit of a tough setup to use because with the 4" bumps you will have one bypass zone ending and the bump starting at the same time which will make a harsh step in the setup, same goes for the 2" as well.

That's the reason I say,maybe go with the three inch so that you split up the steps.

You don't want to mess with moving them up and down in the can because the bump is made to be a final hard stop as well when their fully collapsed, so they need to be setup where you want the suspension to stop moving completely.
 
I have a question SBD. When the suspension is fully compressed, is the shock close to full bottom? From that picture, it looks like the shock is not being fully utilized. Might just be the way it is sitting. But it looks like the springs would have to reverse arc to use the full shock.
 
Actually I think your right about it not completely using all the shock. I think when I originally measured, I had aprox 8" until the spring flatted out. I bought the bigger 14" as opposed to the 12" with the theory (In the future I might want to go to a 6" lift and not have to buy new shocks) and 2nd thought process was that at it's hardest hit the shock would never bottom out completely nor would it get tugged on if I left the ground with out limiting straps. Leaving the leafs to act as the limiting straps. So as I type this I'm thinking that maybe the last By Pass is barley or not even being used? How hard do you have to hit to reverse arc those springs. Ya think that last hit that broke my trans pushed them to reverse? :dunno: Is there a good way to compress the front (Here in my driveway) other than using a floor jack
 
Shock not working was might thought. Your not really using its potential. I'm guessing your only using the first bypass and not getting any farther. The trucks I have set up like that, I have done with multiple mounting locations vertically, so different length shocks can be utilized in the future. Before buying the shocks, I run the front end through its range. Then buy the shock based on that length of travel.

I don't think you want your springs going past flat very much. The bump needs to be set at that point. Then set the limit straps 1/2" short of full droop. Then buy the shocks mounted 1/2" short of full compression and droop.

I have seen too many builds over shocked. They look cool but aren't working. But since you have the shocks, are there springs out there that will hold up your truck, and allow the 13" of travel?

Or can you set up your existing shocks to run a couple inches of the first bypass and the suspension compression stops 1/2" short of full compression. Multiple locations for moving the shock up or down might help. Buts that's a pain to build.

I would set it up with a 4" bump. Set up at 3". That way you can go to the 4" later.

I don't know if any of that makes sence. But in my rambling mind it does.
 
:doah::doah::doah:I kinda thought that was the reply I did not want to hear even thou it most likely is the case. A 6" lift spring would bring those shocks right into there prime BUT I just don't want that much lift(dunes/center of gravity thing)pluss the 1/2 ton running gear would not like bigger tires to fill the hole caused by the lift. Think it's possible or passable to use that last by-pass as a sorta wana-be bump by making it real tight in addition to real bumps:dunno:
 
First thing is to figure out travel length. Even wih your existing shocks. Is there a way you can go to the dunes and get video doing what you do? Direct 90 degrees to the truck. You can see at that point what the compression length is. Droop is easy. Blow a picture up and scale it to measure. I could do it if you send it to me. I would not do anything until you know that.

Is there a calculator out on the web somewhere, that can calculate the compression of your springs based on front end weight? Now that I typed that, there are probably too many variables. There are many for coils. But I've never look for leafs.
 
My favorite part of building a truck, is making the suspension work.

I was told I couldn't do it on my truck. They were wrong.

Was told it wouldn't work in Moab. They were wrong.

Was out at the local off road park in colorado springs on a charity ride day. 3 ultra 4 drivers went for rides. They couldn't believe it. And got out with smiles on their faces. I was clearing a double on the motorcycle track that they were rolling over.
 
Sorry to highjack the thread but Speedworld is opening the short course track up for the first time this weekend KTM :deal:
 
ktmoutfront said:
First thing is to figure out travel length. Even with your existing shocks. Is there a way you can go to the dunes and get video doing what you do? Direct 90 degrees to the truck. You can see at that point what the compression length is. Droop is easy. Blow a picture up and scale it to measure. I could do it if you send it to me. I would not do anything until you know that.
Click to expand...

Yea gona try and go out the 17th, Video got ya, I'll just kinda really watch out for witch eyes.

Babaganoosh said:
x2 this will come in handy when I'm setting up my shock and bump stop mounts.

But I'm sure each setup changes depending on setup. If it's ok SBD can I post my setup for some help?
Click to expand...

Yea it's an open discussion forum
 
Ok here is my soon to be setup once I get it all installed.

I have custom ORD springs with 12 inches of travel, Bilstein 5125 valved for a F250 with 11 inches of travel. I really want to run air bump stops but not sure if it's overkill as well as a limiting strap. I would like to be able to fully use the springs and shock to the maximum capability.

What do you guys recommend for me?
 
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