Airbag Suspension
#1 _Keithy's_UC_
Posted 11 January 2006 - 11:37 PM
Has anyone done this to their torry?? Anyone know of anyone??
What's everyone's verdict on it?? I may be the first UC with it (street legal - that is)!
Keith
#2
Posted 12 January 2006 - 07:56 AM
Also interested in the price involved...
Nice work
#3
Posted 12 January 2006 - 08:13 AM
RACV MAN
#4
Posted 12 January 2006 - 10:07 AM
#5
Posted 12 January 2006 - 01:26 PM
#6
Posted 12 January 2006 - 07:15 PM
Given him a call a few times and he has been real helpful. Just gotta find $4000.00 now....
#7 _JBM_
Posted 12 January 2006 - 07:37 PM
Otherwise cost is also high.
Was curious about using them so that i could have street/track ride height adjustment easily.
#8 _Baronvonrort_
Posted 16 January 2006 - 01:44 PM
The air springs that replace the coil springs will not improve racetrack performance because it raises the vehicle when air pressure is increased so maximum stiffness occurs at maximum ride height.It will be too soft for the track at the lower ride height.
#9 _Oldn64_
Posted 17 January 2006 - 12:58 PM
Cheers
#10 _Flamenco_
Posted 17 January 2006 - 10:50 PM
Don't think it'd be legal somehow!
#11 _Oldn64_
Posted 18 January 2006 - 12:05 AM
Cheers
#12
Posted 21 April 2007 - 11:55 AM
Just to dig this up, if maximum stiffness occurs at max ride height as stated above in an airbag (replacing springs) setup, would you just be able to get a smaller airbag that doesn't raise the car as much?
What i'm getting at is most airbag setups use an airbag that can raise the car upto standard height, so if you had them pumped up to maximum stiffness=max ride height you handleing is going to suffer as although having stiff ish suspension you ride height is not ideal for handeling high C of G etc. With this setup as stated, to get a good low stance for improved handleing (low C of G) you need to reduce pressure in the bags which leads to a decrease in air bag pressure and handleing due to a softer suspension.
But if you used a bag that when fully inflated (high pressure -> increased stiffness) only raised the car to say just legal 100mm or 1-2' lower than standard do you think you would be able to get decend handeling? not race track performance but a good streeter with the od track day for fun? Or do you think that because air is compressable even at max height/ pressure you won't be able to get hard enough suspension due to the air compressing?
Just thinking out loud here
Thoughts????
#13
Posted 21 April 2007 - 01:13 PM
when the 'professional' fitted them they cut the top from the bumpstop tower so now i cant put the original bumpstops back in without patching the tower.
#14 _Bomber Watson_
Posted 22 April 2007 - 04:33 PM
Edited by Bomber Watson, 22 April 2007 - 04:34 PM.
#15
Posted 22 April 2007 - 05:11 PM
Would the air compressing during hard cornering (Eg alot of weight on outside tyres?) compress the air (Body Roll) to much for good handleing?
I guess you can put some fairly high pressures in some of these bags so they would compress less, but are the pressures needed to stop the air compressing to much for good handleing within the rages of these airbags?????
#16 _Bomber Watson_
Posted 22 April 2007 - 07:57 PM
#17
Posted 22 April 2007 - 08:04 PM
Cause every time the height changes up or down so too does the steering geometry
#18 _Bomber Watson_
Posted 22 April 2007 - 08:07 PM
#19
Posted 22 April 2007 - 08:34 PM
#20 _Baronvonrort_
Posted 24 April 2007 - 01:46 AM
Since you quoted my post i will add to it.The air springs that replace the coil springs will not improve racetrack performance because it raises the vehicle when air pressure is increased so maximum stiffness occurs at maximum ride height.It will be too soft for the track at the lower ride height.
Just to dig this up, if maximum stiffness occurs at max ride height as stated above in an airbag (replacing springs) setup, would you just be able to get a smaller airbag that doesn't raise the car as much?
What i'm getting at is most airbag setups use an airbag that can raise the car upto standard height, so if you had them pumped up to maximum stiffness=max ride height you handleing is going to suffer as although having stiff ish suspension you ride height is not ideal for handeling high C of G etc. With this setup as stated, to get a good low stance for improved handleing (low C of G) you need to reduce pressure in the bags which leads to a decrease in air bag pressure and handleing due to a softer suspension.
But if you used a bag that when fully inflated (high pressure -> increased stiffness) only raised the car to say just legal 100mm or 1-2' lower than standard do you think you would be able to get decend handeling? not race track performance but a good streeter with the od track day for fun? Or do you think that because air is compressable even at max height/ pressure you won't be able to get hard enough suspension due to the air compressing?
Just thinking out loud here
Thoughts????
These airbags will not make the car handle any better and the cost and complexity of the system along with the increased weight from the onboard compressor would rule it out in my opinion for all performance applications.
What happens when one of the airbags starts leaking?
Why would you bother spending heaps more money to get no performance gain?
Yes air is compressible and so are springs and what is more important here is the spring rate.If you increase air pressure you will increase the spring rate
I think you would get a much better result for the road/track with some decent springs and if you put some quality shocks in like Bilstein you will get good handling with ride quality at a much cheaper cost.You would probably be able to rebush the thing as well and still have more money in your pocket.
Bmw,Mercedes and those fast german volkswagons all have bilstein shocks and they handle and ride pretty good.
#21 _devilsadvocate_
Posted 24 April 2007 - 07:41 AM
My initial thoughts are that suspension travel will depend on the length of the air bag........unless we are talking about systems that actively change the pressures while the car is in motion.
If no active system is fitted, doubling the force over the bag will halve its volume(subject to how well it releases heat), so the taller the bag the more the car will lean for the same force generated in cornering. This would apply equally if a car was fitted with longer soft springs etc.
This is probably over simplifying it and doesnt take into account the pressure that would be present in an unloaded bag.
Edited by devilsadvocate, 24 April 2007 - 07:49 AM.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users