AcccuAir Lift System

[kyle7875]

I had to piggyback version on order for the diesel. I ordered the gas kit because I’m gonna be mounting the tank somewhere else didn’t wanna lose my spare, but I did not know the piggyback will not fit in the front?

I ask specifically if I could swap out the standard shocks for the adjustable ones. They told me they wouldn’t fit, but who knows. I’ve seen plenty of diesels with these types of shocks (different brands though).

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[GladiatorPilot23]

I ask specifically if I could swap out the standard shocks for the adjustable ones. They told me they wouldn’t fit, but who knows. I’ve seen plenty of diesels with these types of shocks (different brands though).

You right here is the Falcon. . I like these over Fox they are very nice. https://teraflex.com/jt-ecodiesel-falcon-sp2-3-3-fast-adjust-piggyback-shock-kit-2-3-lift.html# on there site they show a template to cut out on the plastic fender liner? Is that the issue Accuair is talking about i wonder?

 

[GladiatorPilot23]

SO spoke with Jri the issue is the reservoir hits the aux battery. They had a shorter version before they said for Diesel but stopped making them. I got the number to a tech guy at Accuair for more info and left a message. Let see. I guess Ill have to change my order to the regulars shocks for now.

 

[darkhorse13]

Has anyone pullled the trigger on using Fox Shocks or any other aftermarket shock in place of what comes with the Accuair Kit?

Received this response from Accuair and didn't totally believe the "shock strap comment".

The shocks that come with the kit are necessary and must be used because they act as the limiting straps for the kit. You will be voiding your warranty if you use the Fox shocks. You can adjust the height settings on your lift but only within 10% of the preset settings.​

If you check post #30 in this thread I reached out to Accuair awhile back to ask about shock length. From post #86 in this thread, Accuair says that the shocks are the "limiting straps" so keep that extended length in mind. If you find a non-JRi shock within these specs, then you might be good to go. Otherwise, you'll likely need to run limiting straps (like Accuair includes in the rear-only kit). I have no idea if non-JRi shock valving would play nicely with the airbags though.

From post #30 on page 2 of this thread:
It also prompted me to ask an online question at Accuair's website (because I forgot to ask in person) what are the shock specifications for the JT? They responded with "the JT shock is a 2" shock body with a 27" extended length and a 17.5" compressed."

Also, this is posted on Accuairs website's under the Q&A for the JRi adjustables = https://accuair.com/collections/shocks/products/jri-jeep-jt-adjustable-shock-kit

Here's the Fox Elite 2.5 shock length tables from Poly Performance as reference. The rear Fox options all appear to have a longer extended length and would likely require limiting straps to reduce overall stroke travel. The Fox front 2-3" option (26.51" extended) seems in acceptable range but you'll appear to lose over an inch of droop vs the JRi's (27.81" extended)

 

[kyle7875]

If you check post #30 in this thread I reached out to Accuair awhile back to ask about shock length. I'm guessing the airbags themselves are supposed to be the "limiting straps" and not the shocks of course. If that's the case, then I would assume as long as you find a shock within these specs, then you are good to go. I have no idea if non-JRi shock valving would play nicely with the airbags though.

From post #30 on page 2 of this thread:
It also prompted me to ask an online question at Accuair's website (because I forgot to ask in person) what are the shock specifications for the JT? They responded with "the JT shock is a 2" shock body with a 27" extended length and a 17.5" compressed."

Also, this is posted on Accuairs website's under the Q&A for the JRi adjustables = https://accuair.com/collections/shocks/products/jri-jeep-jt-adjustable-shock-kit

Here's the Fox Elite 2.5 shock length tables from Poly Performance as reference... I guess pick the closest numbers to JRi?

This is awesome! Thank you!

 

[Minty JL]

I like what I see in here.........this should make a stellar set up once complete and sorted out

 

[GladiatorPilot23]

I did talk with Accuair so definitely the issue is the auxiliary battery in the way so that would have to be deleted if you want to use the JRI shocks remote shocks. Damaging the air spring is one problem you’ll be facing and popping the spring out on the trail is another problem they’ve had with the wrong spec shocks. It’s crucial that the travel length is no longer than the original when switching to a different shock in regards to this limiting strap issue. I was waiting two months for the piggybacks, but they were about to ship and I was able to change and cancel that order and switch it to the regular shocks for now. They did tell me that the regular shocks are very nice but I always want to upgrade parts when I can even further if possible.

 

[CrazyCooter]

What is being missed in all of this mix/match shock discussion is the differences in damping needs to match a given ride frequency?

For example, a coil spring varies in rate based on compressed height by loads applied (higher unloaded frequency/lower loaded frequency) with some changes throughout travel for multi rate coils vs a rolling lobe air bag which adjusts air pressure to maintain height (consistent frequency) as weight is applied because it's rate infinitely variable based on the air pressure inside.

I've been doing a lot of research myself thinking about jumping ship to a coil delete air bag replacement in the rear so I can have a more consistent ride quality under all conditions. I have found a bag that would offer me an approximate 1.42Hz unloaded ride frequency and a 1.47hz loaded frequency instead of my current coil sprung setup which is an estimated 1.71Hz unloaded/1.39Hz loaded ride frequency.

From what I can wrap my head around, I could reduce both rebound and compression damping because the air ride's frequency is more consistent which will offer better traction in the chop while unloaded and I can still add/remove compression requirements with the E-Clik shocks to control body roll and bottoming. I need to line up a suitable compressor setup before jumping ship though.

Just swapping your favorite branded designer damper that was tuned for who knows what spring rate/load will likely have an unfavorable result with the air ride system. There is also a better chance of the non-adjustable shock working just fine with a bagged suspension assuming JRI did their homework on this AND their techs like a ride similar to what the majority likes BECAUSE the ride frequency is more consistent with loads?

 

[darkhorse13]

I've been doing a lot of research myself thinking about jumping ship to a coil delete air bag replacement in the rear so I can have a more consistent ride quality under all conditions. I have found a bag that would offer me an approximate 1.42Hz unloaded ride frequency and a 1.47hz loaded frequency instead of my current coil sprung setup which is an estimated 1.71Hz unloaded/1.39Hz loaded ride frequency.

It's about time you joined the shock conversation Like you, I'm more interested in just the rear only bag setup with the new Scout Tuktut camper and the wild weight swings when I remove it (plus the ability to partially self level the rear on camping trips).

To over-simplify this... I'd imagine that a Fox/King adjustable shock would have some "setting" that would at least overlap or improve upon the stock JRi monotube valving, correct? Or is it incorrect to assume that Fox/King valving is so far off from the JRi custom tune for these bags?

 

[CrazyCooter]

It's about time you joined the shock conversation Like you, I'm more interested in just the rear only bag setup with the new Scout Tuktut camper and the wild weight swings when I remove it (plus the ability to partially self level the rear on camping trips).

To over-simplify this... I'd imagine that a Fox/King adjustable shock would have some "setting" that would at least overlap or improve upon the stock JRi monotube valving, correct? Or is it incorrect to assume that Fox/King valving is so far off from the JRi custom tune for these bags?

Ya, I've been a bit checked out on the forums since I'm too busy doing this work for real........The Sprinter guys and local suspension snobs have found me, so it's been taking up a bit of my time.

To answer your question about the different shocks being a fit.......Honestly it really depends on what frequency the tuner set the shock up for...........

For instance the front axle on a gas JT on a Synergy 110lb spring might have a ride frequency of say 1.09Hz while the same truck on a Clayton gas spring would be 1.43Hz and the frequency would drop some with every lb applied. The higher frequency would require less compression, more rebound damping, AND those demands would change with loads applied.

What if the same bagged truck had a ride frequency of say 1.20-1.25Hz regardless of the weight applied? A shock tuned for a light truck on Synergy springs might work OK? Or maybe the rebound would be too much?

I had a guy not too long ago inquired about me tuning a set of SDi's for an Accuair suspension for a JT Alucab build, but I got the generic runaround from Arnott. They wouldn't provide me a length to work with or even ship a system without their shocks anyway.

What about the Ohlins offering that has both compression and rebound adjustments? Hmmmmmm

If I see the demand for shock tuning using say the Timber Grove coil replacement system with either Fox and/Or SDi's......I might speed up the development on such a thing? I just dont see a person buying the Accuair system, tossing the supplied shock in the dumpster, and buying Fox, King, SDi, Icon, or any other offering becuse the JRi's have no value to anyone not running the spec'd bag system?

Also keep in mind that shocks/dampers are "frequency changers"!

 

[darkhorse13]

I just dont see a person buying the Accuair system, tossing the supplied shock in the dumpster, and buying Fox, King, SDi, Icon, or any other offering becuse the JRi's have no value to anyone not running the spec'd bag system?

All good info! Just a note though, I don't believe the rear-only kit for $2999 comes with any brand of shock. Not sure what Accuair is recommending outside of the JRi. They are including limiting straps with the rear only kit, which infers that a customer can run their own choice?

 

[CrazyCooter]

All good info! Just a note though, I don't believe the rear-only kit for $2999 comes with any brand of shock. Not sure what Accuair is recommending outside of the JRi. They are including limiting straps with the rear only kit, which infers that a customer can run their own choice shock.

I wasn't even aware of Accuair offering just a rear kit till now. Just based on my dealings with Arnott (who owns Accuair and JRI), it was much of the same concealment of tech info on the product they are selling......I choose to steer clear.

I just had a look at the Accuair site and again for the rear only kit......Missing travel info? Only fits gas models? The air bag looks smallish which I would see equating to a higher ride frequency than a larger bag especially with pressure spikes during suspension compression events.........HARD PASS!

Timber Grove is transparent about what air bag they are using so specs are public knowledge if you know where to look! Yes, you are on your own for air management, but most of us can figure that one out or go manual fill? And then the big plus for me..........It's a commercial truck/trailer bag that will likely be available overnight or maybe even in stock anywhere in the country?

After what I have been through on my journey in the suspension tuning for both 2, 3 and 4 wheeled vehicles...........I just choose ignore/disregard any manufacturer who isn't 100% transparent with the details of what their are pedaling. Without transparency, it's all smoke and mirrors with the buyer's pocketbook falling victim.

 

[darkhorse13]

I just had a look at the Accuair site and again for the rear only kit......Missing travel info? Only fits gas models? The air bag looks smallish which I would see equating to a higher ride frequency than a larger bag especially with pressure spikes during suspension compression events.........HARD PASS!

I'll play devil's advocate for a minute then take a break on the thread as I'm basically acting as an "arm chair expert" at this point. I'd love to get opinions from people on this thread who actually pull the trigger on the kit

Accuair has travel numbers here and there on their website but you have to look for them in the Q&A sections. I also agree that all of the tech info should be present and clear on each product description. I have also emailed and called Accuair anytime I have a question and they've been helpful to me. (granted I've not asked them for the type of shock info like you need for actual tuning)

Here's the travel numbers I can find...

As far as bag size, they seem to use the same part number for bags in all of the JT kits. I can't tell you if these are too small or a good size, but I get your point of more volume = better load compliance under pressure. Not sure why the rear only kit is GAS only models... might be a typo? I'll ask Accuair in their Q&A section.

I still think the rear only kit might be a solution for me but I'll need to poke around some more.

 

[CrazyCooter]

I'll play devil's advocate for a minute then take a break on the thread as I'm basically acting as an "arm chair expert" at this point. I'd love to get opinions from people on this thread who actually pull the trigger on the kit

Accuair has travel numbers here and there on their website but you have to look for them in the Q&A sections. I also agree that all of the tech info should be present and clear on each product description. I have also emailed and called Accuair anytime I have a question and they've been helpful to me. (granted I've not asked them for the type of shock info like you need for actual tuning)

Here's the travel numbers I can find...

As far as bag size, they seem to use the same part number for bags in all of the JT kits. I can't tell you if these are too small or a good size, but I get your point of more volume = better load compliance under pressure. Not sure why the rear only kit is GAS only models... might be a typo? I'll ask Accuair in their Q&A section.

I still think the rear only kit might be a solution for me but I'll need to poke around some more.

So you have to give up travel over a standard 2-3" lifted shock......A Fox 2-3" is 10.97 stroke and 28.3" extended. This kit has to be used with a 2-4" lift yes from what I remember reading earlier? Stock shock is 8.5" stroke and 25.5" extended?

Yes, I feel the larger air volume is a plus and also the larger Firestone bag I'm looking at provides that 1.4-1.5Hz ride frequency target I'm after. Smaller bag, higher frequency? I'm already riding on a 1.7Hz+ frequency while unloaded and would like to lower it for better ride and bumps compliance/traction.

IF Arnott would provide us with a full set of specs of what they are selling, one could make an educated decision.........

I feel it could be a simple bolt on solution for many, but I don't think it's for me.

 

[GladiatorPilot23]

Ya, I've been a bit checked out on the forums since I'm too busy doing this work for real........The Sprinter guys and local suspension snobs have found me, so it's been taking up a bit of my time.

To answer your question about the different shocks being a fit.......Honestly it really depends on what frequency the tuner set the shock up for...........

For instance the front axle on a gas JT on a Synergy 110lb spring might have a ride frequency of say 1.09Hz while the same truck on a Clayton gas spring would be 1.43Hz and the frequency would drop some with every lb applied. The higher frequency would require less compression, more rebound damping, AND those demands would change with loads applied.

What if the same bagged truck had a ride frequency of say 1.20-1.25Hz regardless of the weight applied? A shock tuned for a light truck on Synergy springs might work OK? Or maybe the rebound would be too much?

I had a guy not too long ago inquired about me tuning a set of SDi's for an Accuair suspension for a JT Alucab build, but I got the generic runaround from Arnott. They wouldn't provide me a length to work with or even ship a system without their shocks anyway.

What about the Ohlins offering that has both compression and rebound adjustments? Hmmmmmm

If I see the demand for shock tuning using say the Timber Grove coil replacement system with either Fox and/Or SDi's......I might speed up the development on such a thing? I just dont see a person buying the Accuair system, tossing the supplied shock in the dumpster, and buying Fox, King, SDi, Icon, or any other offering becuse the JRi's have no value to anyone not running the spec'd bag system?

Also keep in mind that shocks/dampers are "frequency changers"!

Wow never heard of SDi, they have what looks like an active system. Never even heard of Hz in suspension talk. I'll learn about that. For JRi, I would think they would work as a stock upgrade shock. So as long as I don't go past that 27.81" extended, I should be ok with another shock system in case I still want to go to another level??

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