completely agree with the above, cheap and cheerful I don't know how they are able to do it for the money although I'd guess it involves slave labour in a Chinese shanty town, be hay ho
As stated don't expect to much and you'll be fine with them as they are, for sure there are better quality items available but this will always involve more expense, cheap coilovers are a cheap but ultimately compromised solution simple as that.
Although I'm pretty sure they can be improved dramatically, the trouble with these from a performance point of view is they at first feel very stiff with little or no apparent compliance but the first pot hole or speed bump you hit they bottom out, I suggest this is because they are under sprung and over damped so the first thing to do is ditch the supplied springs and get a pair of longer free length appropriately rated coil springs, the supplied springs seem to have random spring rates I even heard of the supplied springs differing between struts, the helper springs are so soft they are little more than spacers and are only there to stop the main spring unseating on full rebound.
I'm currently trying to choose a suitable spring for my own 'cheap' coilies, springs can be made to virtually any free length and rate so choosing the most appropriate is a bit of a challenge, whether there is a formula or equation out they that can be used to get the spring spec in the right ball park I don't know I've certainly not found one and believe me I've looked, I'm lucky in that I've got a pal who rallies and as a fair few spare coil springs of differing lengths and rates so the plan is in the new year to rumage through these and see if I can find something that works, I'm thinking a spring rate of around 300-325lbs and free length in the region of 10" should be something like but a bit of trail and error should bring the improvement I'm looking for.
The issue with the over damping is more difficult to address, as I'm not sure what the cause is, by that I mean I don't know whether the the inserts are built with excess damping or it's more to do with stiction (internal friction) caused by cheap, oil, seals and inconsistent quality control, either way the only way to address the issue is to open up the insert and tinker with the internals, this shouldn't be as difficult as it sounds,think motorcycle fork tuning back in the day when bike forks were un-adjustable, changing the viscosity and volume of the hydraulic oil was the only way change the damping characteristics, I don't see why the same process wouldn't work on the coilover insets OK it's trial and error again but I quite enjoy the tinkering and even when it's not a total success you always tend to learn something in the process.
As stated don't expect to much and you'll be fine with them as they are, for sure there are better quality items available but this will always involve more expense, cheap coilovers are a cheap but ultimately compromised solution simple as that.
Although I'm pretty sure they can be improved dramatically, the trouble with these from a performance point of view is they at first feel very stiff with little or no apparent compliance but the first pot hole or speed bump you hit they bottom out, I suggest this is because they are under sprung and over damped so the first thing to do is ditch the supplied springs and get a pair of longer free length appropriately rated coil springs, the supplied springs seem to have random spring rates I even heard of the supplied springs differing between struts, the helper springs are so soft they are little more than spacers and are only there to stop the main spring unseating on full rebound.
I'm currently trying to choose a suitable spring for my own 'cheap' coilies, springs can be made to virtually any free length and rate so choosing the most appropriate is a bit of a challenge, whether there is a formula or equation out they that can be used to get the spring spec in the right ball park I don't know I've certainly not found one and believe me I've looked, I'm lucky in that I've got a pal who rallies and as a fair few spare coil springs of differing lengths and rates so the plan is in the new year to rumage through these and see if I can find something that works, I'm thinking a spring rate of around 300-325lbs and free length in the region of 10" should be something like but a bit of trail and error should bring the improvement I'm looking for.
The issue with the over damping is more difficult to address, as I'm not sure what the cause is, by that I mean I don't know whether the the inserts are built with excess damping or it's more to do with stiction (internal friction) caused by cheap, oil, seals and inconsistent quality control, either way the only way to address the issue is to open up the insert and tinker with the internals, this shouldn't be as difficult as it sounds,think motorcycle fork tuning back in the day when bike forks were un-adjustable, changing the viscosity and volume of the hydraulic oil was the only way change the damping characteristics, I don't see why the same process wouldn't work on the coilover insets OK it's trial and error again but I quite enjoy the tinkering and even when it's not a total success you always tend to learn something in the process.