First Impression: RCS Suspension - Velocity Sensitive Dampers

not saying low quality...maybe they used average quality oil where usually suspension is high precision parts need the best oil available...

or need to setup the valving/oil grade choosen need to take account the running-in/break-in period...


or maybe just the case that the nitrogen gas leaks thru the air valve?? :hmmmm::hmmmm::hmmmm:




just my assumption.... :driver:

You make it sound like those fast easy mod, drill hole at bottom, pump in 20w-50 oil to harden the suspension......hhahahhahahhahaha:rofl:

Yah! true also, have to check what the real fault is....:driver:
 
perhaps due to the oil quality used inside the suspension body not up to par? :hmmmm:

That I am unsure, I noticed they use Silkolene products.
Some people suspect it could be a leaking compressed air nipple that caused the compressed air section within the shock to fail prematurely. Many other manufacturers uses a sealed system rather than the air nipple.

regarding the oil part, it could just be a case of bad quality seals?
 
That I am unsure, I noticed they use Silkolene products.
Some people suspect it could be a leaking compressed air nipple that caused the compressed air section within the shock to fail prematurely. Many other manufacturers uses a sealed system rather than the air nipple.

regarding the oil part, it could just be a case of bad quality seals?


seal are less unlikely be a problem unless it causing the external leak...




in my experience in tuning small bike's suspension (fork and absorber)

most problem would be due to oil degradation and or leaking pressurised gas.....



me personally use fully syn race engine oil or special racing fork oil from motul for that task....

been using normal engine oil during early trial-error part....getting complains from friends it loose the firmness after a few week.... (due to normal oil in the fork)....and all were good again after switching to better oil......

thats why i think mainly due to oil and/or leaking gas pressure....hence the oil sloshing around inside the tube and wont work as good as it was new.... :adore:
 
Engine oil? I thought you need hydraulic oil for suspension, right?

depends on the viscosity needed....usually with tight valve hole size we run, engine oil or fork oil was sufficient enough.....to thick oil will result the suspension over damped massively....
 
depends on the viscosity needed....usually with tight valve hole size we run, engine oil or fork oil was sufficient enough.....to thick oil will result the suspension over damped massively....

As far as I know fork oil is hydraulic oil, and hydraulic oil very light viscosity.....
 
As far as I know fork oil is hydraulic oil, and hydraulic oil very light viscosity.....

hydraulic oil thicker than fork oil usually rite? never tought of using that.... (*abandon that...i thought manual gearbox oil) :lol: :rofl:

since motul fork oil works fine for our application...so just keep using that for now
 
Whoaaaa....Didnt realize this thread came back to life. Shocking to hear. I just spoke to Feezam couple of months back and he told me they just moving office.

And now got new updates on the product. Is kind of a bummer to hear some for of negative feedbacks. Was really interested in this initially.
 
Sad to hear for your bad experience though. I just installed their product on my Forte and im a very satisfied customer. From stock suspension to RCS. The difference is like day and night. The suspension is a secondhand from my friend. I got it installed from a tire shop and got some noises here and there also. I think its workmanship issue. Im going to RCS and have then check and rectify the sounds.

Sent from my GT-I9500 using Tapatalk
Turns out that the rear suspension bushings worn out, modded front lower arm (bearings) also gone. Had them replaced and now im driving with peace of mind :):):)

Sent from my GT-I9500 using Tapatalk
 
Whoaaaa....Didnt realize this thread came back to life. Shocking to hear. I just spoke to Feezam couple of months back and he told me they just moving office.

And now got new updates on the product. Is kind of a bummer to hear some for of negative feedbacks. Was really interested in this initially.

Hi marv3, what was the car that you intended to try out with RCS dampers back then?
 
Huh, didn't know this thread existed.

short story:
majority of issues resolved, go talk to Feezam if you've having them. They are more than willing to help.

Long story:
I looked for RCS/RDS because with my previous car, I tried several big name "brands" and was never happy. The car never felt grippy. Sure it felt firm, stable, but when you push the limits, they come really quick and mercilessly. I crashed that car eventually. I didn't even see it coming, it just snapped loose during normal driving and I thought I was a goner when I went into the opposite lane. I survived (obviously), but the car was in a bad way.

I knew something wasn't right. I knew that stiff suspension wasn't the answer. I returned the car to stock when I had it repaired and immediately it had more grip, and more roll. But it always seemed to have an odd feeling, didn't seem to want to follow my steering properly. I suspect some serious damage was done that wasn't fixed. I decided to get rid of the car and started a new journey.

After I got my MX-5, I started looking for suspension options. I sat and drove quite a number of MX-5s with again, "big brand" suspension names. And I felt the same same snappy response with lack of grip when pushed to the limits (please do it in a safe environment and not on public roads). I was really frustrated because the stock suspension makes the car look like a 4WD (google stock MX-5 NC ride height and you'll see what I mean).

So, enter RCS. blahblahblahsetupblahblahblahinstallblahblahfinetuneblahblah.

And now I've been using my RCS one-way adjustables on my 2012 MX-5 NC for about two years+

I track the car, autox, gymkhana, on all types of surfaces (some of our roads can be called rally tracks...). I rebuild the dampers about once/twice a year (depends on my usage). The oil does pick up carbon from seals and whatnot and eventually the viscosity changes (the new seals seem to mitigate this a lot though). The oil is a CRITICAL component and I consider it wear and tear with a limited lifespan.

You must understand that this is a true performance product. This is not your typical "give you a stiffer ride feeling with low body roll" suspension. The tolerances are REALLY tight. If you've watched them build a set you know what I mean. Now compare to what you see being built from other brands, I won't need to mention names, see for yourself. Ask them how much it costs to rebuild as well.

There are no cheapo supplies being used. I saw cheap oil being mentioned, uh... nope. Unless you call Fuchs Silkolene cheap. I work with them closely on my requirements and I've personally handled all their components. They are anything but cheap.

I don't pretend to understand everything about suspension but let me tell you, once you drive RDS, other suspension just seems unsuitable and lack of grip. Nowadays when I hitch a ride in a random car at RDS, I can tell immediately, within the first five-seconds, sometimes even while the car is just reversing out of car park, that it's using RDS suspension. It just has that feel that the tyre is permanently and evenly stuck to the ground.

Take a ride in one of their cars. I promise you'll be amazed.
 
Huh, didn't know this thread existed.

short story:
majority of issues resolved, go talk to Feezam if you've having them. They are more than willing to help.

Long story:
I looked for RCS/RDS because with my previous car, I tried several big name "brands" and was never happy. The car never felt grippy. Sure it felt firm, stable, but when you push the limits, they come really quick and mercilessly. I crashed that car eventually. I didn't even see it coming, it just snapped loose during normal driving and I thought I was a goner when I went into the opposite lane. I survived (obviously), but the car was in a bad way.

I knew something wasn't right. I knew that stiff suspension wasn't the answer. I returned the car to stock when I had it repaired and immediately it had more grip, and more roll. But it always seemed to have an odd feeling, didn't seem to want to follow my steering properly. I suspect some serious damage was done that wasn't fixed. I decided to get rid of the car and started a new journey.

After I got my MX-5, I started looking for suspension options. I sat and drove quite a number of MX-5s with again, "big brand" suspension names. And I felt the same same snappy response with lack of grip when pushed to the limits (please do it in a safe environment and not on public roads). I was really frustrated because the stock suspension makes the car look like a 4WD (google stock MX-5 NC ride height and you'll see what I mean).

So, enter RCS. blahblahblahsetupblahblahblahinstallblahblahfinetuneblahblah.

And now I've been using my RCS one-way adjustables on my 2012 MX-5 NC for about two years+

I track the car, autox, gymkhana, on all types of surfaces (some of our roads can be called rally tracks...). I rebuild the dampers about once/twice a year (depends on my usage). The oil does pick up carbon from seals and whatnot and eventually the viscosity changes (the new seals seem to mitigate this a lot though). The oil is a CRITICAL component and I consider it wear and tear with a limited lifespan.

You must understand that this is a true performance product. This is not your typical "give you a stiffer ride feeling with low body roll" suspension. The tolerances are REALLY tight. If you've watched them build a set you know what I mean. Now compare to what you see being built from other brands, I won't need to mention names, see for yourself. Ask them how much it costs to rebuild as well.

There are no cheapo supplies being used. I saw cheap oil being mentioned, uh... nope. Unless you call Fuchs Silkolene cheap. I work with them closely on my requirements and I've personally handled all their components. They are anything but cheap.

I don't pretend to understand everything about suspension but let me tell you, once you drive RDS, other suspension just seems unsuitable and lack of grip. Nowadays when I hitch a ride in a random car at RDS, I can tell immediately, within the first five-seconds, sometimes even while the car is just reversing out of car park, that it's using RDS suspension. It just has that feel that the tyre is permanently and evenly stuck to the ground.

Take a ride in one of their cars. I promise you'll be amazed.

Hi, anyone know if RDS is still in business?
 
Wow, never heard of them, but what interests me is this "First test, going over the speed hump at insane speeds. Though by itself doesn't justify performance as a whole, is a good way of highlighting the ability of the Velocity Sensitive damper. It is a surreal sensation, almost mind-blowing. I expected the top mounts to explode through the bonnet but the Subaru didn't even squeak. It remained almost flat. "
 
I first heard of them a very long time ago. When it was still RCS.

Recently on the hunt for new coilovers. 14 yr old Tein Superstreets have started leaking and i wasnt sure if i wanted a stop gap solution; something cheap while i get those Superstreets rebuilt or try something new altogether.

Looked at Titan and HWL and then F-Tuned but... wasn't really sure. Then somehow thought about this brand i read about all those years back and did some google sleuthing.

I mean, i would read the previous pages of this thread but they are from a long time ago lol. Not sure if the nice things (and the not so) still apply now?
 
Last edited:
I first heard of them a very long time ago. When it was still RCS.

Recently on the hunt for new coilovers. 14 yr old Tein Superstreets have started leaking and i wasnt sure if i wanted a stop gap solution; something cheap while i get those Superstreets rebuilt or try something new altogether.

Looked at Titan and HWL and then F-Tuned but... wasn't really sure. Then somehow thought about this brand i read about all those years back and did some google sleuthing.

I mean, i would read the previous pages of this thread but they are from a long time ago lol. Not sure if the nice things (and the not so) still apply now?

looks your teins are about as old as this article

what are your goals for the next suspension phase?

if you plan to retain the same sensation and no intention to upgrade then probably get them serviced, I think all entities you mentioned can do the job for you,

I've learnt over the years, the most important aspect of any coilover is in the initial setup.
From the spring preload, to damper travel and ride height.

One can purchase the best off the shelf coilover but when the job is given to an inexperienced entity, it will most likely never perform as intended, or worse, perform negatively, let alone anywhere optimum

try to pick an entity, where you or your peer has experience with, has positive portfolio, proper engineering background, where you have sampled their work and like it
 
looks your teins are about as old as this article

what are your goals for the next suspension phase?

if you plan to retain the same sensation and no intention to upgrade then probably get them serviced, I think all entities you mentioned can do the job for you,

I've learnt over the years, the most important aspect of any coilover is in the initial setup.
From the spring preload, to damper travel and ride height.

One can purchase the best off the shelf coilover but when the job is given to an inexperienced entity, it will most likely never perform as intended, or worse, perform negatively, let alone anywhere optimum

try to pick an entity, where you or your peer has experience with, has positive portfolio, proper engineering background, where you have sampled their work and like it
Yes they really are quite old. And for some reason they really they have really been quite durable. At least, till the point i stopped driving the car. But i know they were on their last legs; the 16 click valves became 32 and 1 of them had a broken shaft before when the set was very new and after the rebuild from my local Tein distributor it never felt the same; was about to count 18 or 20 something clicks on that one alone.

Honestly, i don't know if there is better suspension for my car, or what "better" should feel like. Were my Super Streets good, average, or mediocre? I find that its... okay i guess. i am just wondering if theres, better, or if my mind can be blown. I mean, The Teins were the first coilovers for my car so its hard to draw a comparison with anything else. I thought that paying more for a premium brand would at least gurantee some lvl of quality but here's the snag; they don't make anything for my car lol. Its a late 90s Mitsubishi Mirage that i have, so I don't really have alot of options. Anything the Satria can use, i can, sans the front top mounts so i thought i'll hit whats available up North first (I am from Singapore)

Whatever my friends are using; they don't make anything for my car. Or the other simple way out is BC but i hate them, so here i am!
 

Similar threads

Posts refresh every 5 minutes




Search

Online now

Enjoying Zerotohundred?

Log-in for an ad-less experience