UAS bags on coilovers

[beachbum718]

Since I'm doing bags over my existing coils.do I make my coilover as long as my stock struts and put bags on the coils that way?I know I have to set the bottom collar of coilover 4 inches from start of rod.but not sure of full length of extended coilover size.I know for sure I can't put bags at the height there at now or o would not get any lift.

Reason for bag over coils is I already have Coils and no companies make one piece setups except airrex 6400$ and airrunner 4800$ which is crazy prices And weak management.I've already have dual 444c 5 gal and v2 All new.I'm pretty sure that's better then airrex management and paddle basic valves from airrunner.

If anyone has any knowledge please share.thanks alot.
trying to get this done soon.have everything needed but I stallions help on size of coilover lengths for bags

[Oh Damn, it's Sam]

You'll adjust the lower perch until you're satisfied with both the lift you get and the drop. Basically, you'll adjust it just like a coilover, only instead of adjusting ride height, you're adjusting the upper and lower bounds of the suspension range.

If your application is particularly cramped, you might also look and see whether Air Lift has a universal builder kit that would work in your application. Sometimes their kits can be narrower than the UAS bags, especially their sleeve bag kits.

[beachbum718]

So your saying spiral the bag down or up for ajusting. Rather then spinning the bottom coilover part to lower it or raise it?

I looked into airlift.there build it struts are 800 a pc.that's 3200 plus fab costs.yikes and still wouldn't be made for my car.I figure uas has been around alot if bigger cars for a while.I'll give it a go.if I don't like I'll sell everything.go back to coils.and sell my car in two years and get a gtr skyline lol.call it a day.thanks for reply

[Oh Damn, it's Sam]

You'll use both adjustments. You'll adjust the lower spring seat to ensure you have enough range for the bag to move from fully-compressed to fully-inflated, and you can thread the entire assembly in and out of the lower mount to adjust your maximum lift and drop.

Air Lift's builder kits are ~$850 a pair, not each. If you've already got well-damped struts and enough room for double-bellows bags, there's no huge disadvantage to using the UAS bags, however.

[beachbum718]

Yea just checked the site.the diameter is like 6 or 7 when airred up on the build it struts.that's wider then uas.

So I'm going to start at stock ride height.I'll Mesure my stock struts.and go maybe an inch shorter on the coils.
question? For best ride quality would it be all airred up or a little bit lower then all airred up?
I'm guessing I'm going to have to find d a sweet spot.

[Oh Damn, it's Sam]

Yea just checked the site.the diameter is like 6 or 7 when airred up on the build it struts.that's wider then uas.

The sleeve-style max diameter is only like 4.6". Not trying to push you in that direction, but just for posterity...

So I'm going to start at stock ride height.I'll Mesure my stock struts.and go maybe an inch shorter on the coils.
question? For best ride quality would it be all airred up or a little bit lower then all airred up?
I'm guessing I'm going to have to find d a sweet spot.

It depends on your definition of "best ride quality". You'll want to ride with the bag somewhere in the middle so you have enough range for the suspension to both compress and droop. At nowhere in the suspension's normal cycle should the bag reach its fully-extended length nor be fully-compressed.

The instantaneous spring rate of a bag system changes for a given pressure dependent upon the volume of the bag at rest. In other words, you can adjust your instantaneous spring rate at rest by running with the bag more compressed or more extended at ride height. As bags are highly progressive, the instantaneous spring rate increases geometrically as the bag is compressed. This means that if you run the bag more compressed, you not only get a stiffer instantaneous spring rate, but you also put the bag in a steeper section of its spring rate curve, thus making the bag respond in a more progressive fashion. Conversely, running the bag more extended will cause it to be softer and the first bit of its compressive travel will be in a flatter portion of the curve, giving it response characteristics more akin to constant-rate springs.

If you're after exact instantaneous spring rates and the precise curve for your bags, you can derive your specific curve easily from Boyle's law.

[beachbum718]

Very happy with bags over coils .ride height drives smooth 95psi 18 damper 60 psi 12 damper.and it's 3 inches lower then stock height.m37 ride high stock.my lowered height is 75psi and 45psi.and it's not bouncey.it's only bouncey when I ride over 110 psi f.other then that I love it.I'm happy that with the coils I can set them to be level when airred out to zero all around since the front control arm hits chassis and rear goes lower.so with coils ajusted.it sits level and flush front and rear and not that squatted look.mines silver in pics.

[famymnlb]

Yea just checked the site.the diameter is like 6 or 7 when airred up on the build it struts.that's wider then uas.