Guys with BC coilovers - need help!!
#61
Originally Posted by Jeff92se
I'm sure it would be nice to know either way but how would affect the performance and buying decision if they are one way or the other? (considering the multiple spring rates that seem to be available)
#62
Well I was curious as to how the spring being linear or progressive would affect your decision. Would it be a deal breaker if they happen to be one way or another? If the question is confort or performance, IMHO the spring rate would be the greatest factor here. Or the dampening rates if you ramp them up that high
#63
Originally Posted by Jeff92se
Well I was curious as to how the spring being linear or progressive would affect your decision. Would it be a deal breaker if they happen to be one way or another? If the question is confort or performance, IMHO the spring rate would be the greatest factor here. Or the dampening rates if you ramp them up that high
But why are you concerned about other people’s needs? The thread is about the design of the BC coilovers, not why people want to better understand the design.
#64
Why not ask why? Because I like to read why people prefer linear or progressive springs?
The compromise inbetween ride/performance is always there. But you compare the progressive Eibachs to these BC coilovers if they are also progressive. I guess you compare the two because the spring rates you choose for the BC units would be similar to what your Eibachs are at now?
I wasn't aware that progressive meant automatically giving up track/auto-x performance. If a stiffer spring is chosen, the progressive nature would still hinder the performance over your Eibachs?
I just thought the spring rate choice would affect the performance/ride more than if the spring was linear/progressive?
The compromise inbetween ride/performance is always there. But you compare the progressive Eibachs to these BC coilovers if they are also progressive. I guess you compare the two because the spring rates you choose for the BC units would be similar to what your Eibachs are at now?
I wasn't aware that progressive meant automatically giving up track/auto-x performance. If a stiffer spring is chosen, the progressive nature would still hinder the performance over your Eibachs?
I just thought the spring rate choice would affect the performance/ride more than if the spring was linear/progressive?
Last edited by Jeff92se; 07-11-2008 at 01:29 PM.
#65
Originally Posted by Jeff92se
Why not ask why? Because I like to read why people prefer linear or progressive springs?
The compromise inbetween ride/performance is always there. But you compare the progressive Eibachs to these BC coilovers if they are also progressive. I guess you compare the two because the spring rates you choose for the BC units would be similar to what your Eibachs are at now?
I wasn't aware that progressive meant automatically giving up track/auto-x performance. If a stiffer spring is chosen, the progressive nature would still hinder the performance over your Eibachs?
I just thought the spring rate choice would affect the performance/ride more than if the spring was linear/progressive?
The compromise inbetween ride/performance is always there. But you compare the progressive Eibachs to these BC coilovers if they are also progressive. I guess you compare the two because the spring rates you choose for the BC units would be similar to what your Eibachs are at now?
I wasn't aware that progressive meant automatically giving up track/auto-x performance. If a stiffer spring is chosen, the progressive nature would still hinder the performance over your Eibachs?
I just thought the spring rate choice would affect the performance/ride more than if the spring was linear/progressive?
![Roll Eyes (Sarcastic)](https://g35driver.com/forums/images/smilies/rolleyes.gif)
Everything I had read prior to yesterday was about the original design. So my interest in better understanding how the new design varies is to determine (for myself, I don’t care about your interest) is whether or not the information I gained previously will be relevant to the new design.
#66
I would prefer to not use progressive springs because I don't need the compromise between handling and comfort. I like a nice linear springrate that responds in a more predictable manner. Thats not to say I wouldn't buy these BC coilovers just because they are progressive, but it would depend on the change from the initial springrate to the final springrate, it seems like the difference here is small, unlike some of the springs on the market, so it is likely that they would behave similar to a linear spring once installed. I would still like to know this information before making any decisions though, and it hasn't been provided.
#68
Originally Posted by Jeff92se
Are progressive performance springs unpredictable by nature? Even on a higher spring rate?
#69
#70
#71
Originally Posted by Jeff92se
What if the intial/final rate differences weren't that dramatic? ie.. a spring for a performance coilover system? I guess we just have to wait how this issue pans out and what springs are available ultimately (and their specs)
#72
#73
Originally Posted by Klubbheads
The thing that i don't understand is how difficult is it for one of the suppliers on this forum to call the actual company and find out the exact explanation to why are these springs linear like they are claiming to be.
![Icon17](https://g35driver.com/forums/images/smilies/icon17.gif)
#74
Originally Posted by redlude97
This is what I would like to know as well. A progressive spring with a small change in intial to final springrates would likely be the best compromise
#75
Originally Posted by redlude97
You just proved my point, if the pitch on a conical spring is even, then it is a variable(progressive) rate. Just as I stated. The pitch/spacing would have to be different for the springrate to be constant. Let me break it down so even you can understand.
Straight spring:
Same pitch-linear design
Varying pitch-progressive design
Conical spring:
Same pitch-progressive design
Varying pitch-linear design
Do you see the difference yet?
Straight spring:
Same pitch-linear design
Varying pitch-progressive design
Conical spring:
Same pitch-progressive design
Varying pitch-linear design
Do you see the difference yet?
I understand you don't necessarily like listening to the people that work at these companies. I just don't understand why the heck they would lie about whether or not the springs are linear vs. progressive. It's not like one is necessarily worse than the other, that's just based on what you're looking for in a spring and opinion. So there really wouldn't be a need to lie.
I think there's only one way to solve this. I can easily just release the spring from my rear spring bucket and measure the spacing between the damn coils.
![5091](https://g35driver.com/forums/images/smilies/action-smiley-029.gif)