sneak peak; Eibach Coilovers
thats an SPC upper control arm.
with the german made helper springs, i cant imagine these being that low cost.
care to say who made/designed the shock???
with the german made helper springs, i cant imagine these being that low cost.
care to say who made/designed the shock???
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">
care to say who made/designed the shock???
</TD></TR></TABLE>
Shocks are made by KW to Eibach Specifications. All developement was done by Eibach. Keepin' it German
care to say who made/designed the shock???
</TD></TR></TABLE>Shocks are made by KW to Eibach Specifications. All developement was done by Eibach. Keepin' it German
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nice setup, but i have a question about the helper springs. aren't they ment to fully compress and tranfer the load to the real springs? If that is that is that case then it appears that when weight is put on them that they would be out of shock travel or almost at least. Is this the case? or do i understand helper springs wrong, i remeber that there is helper springs and another type and one compresses fully and the others don't
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slammed_93_hatch »</TD></TR><TR><TD CLASS="quote">nice setup, but i have a question about the helper springs. aren't they ment to fully compress and tranfer the load to the real springs? If that is that is that case then it appears that when weight is put on them that they would be out of shock travel or almost at least. Is this the case? or do i understand helper springs wrong, i remeber that there is helper springs and another type and one compresses fully and the others don't</TD></TR></TABLE>
Helper-Compresses all the way and keeps main in place. Does not have rate.
Tender: Has rate and effects overall spring package.
Tender Progressive: Has two rates and effects overall package.
Helper-Compresses all the way and keeps main in place. Does not have rate.
Tender: Has rate and effects overall spring package.
Tender Progressive: Has two rates and effects overall package.
actually, i take that back, they are more than helper springs. they are tender springs that have some acutal spring rate to them. making it a composite spring rate.
ok its clear now, i was a bit confused, becuase i remeber messing with some identical looking springs at GC and they had rates on them.
alright here is another question for ya ryan.
for tender springs- to figure out your overall rate, do you simply add them(the tender and main spring). Or is the tender springs rate usually low enough that it will be come fully compressed at some point durning a corner.
My gut says that my second statment is what a tender progressive would be, but im unsure
alright here is another question for ya ryan.
for tender springs- to figure out your overall rate, do you simply add them(the tender and main spring). Or is the tender springs rate usually low enough that it will be come fully compressed at some point durning a corner.
My gut says that my second statment is what a tender progressive would be, but im unsure
1/S = 1/s1 + 1/s2
S = total spring rate
s1= spring rate 1
s2= spring rate 2
for example
s1= 100 s2= 200. S = 66
The total spring rate is always lower than the lowest spring rate.
even if
s1= 900 s2= 50, S = 47
but of course the 50 rated spring will collapse faster than the 900. once the 50 is collapsed, then its just a 900 spring.
S = total spring rate
s1= spring rate 1
s2= spring rate 2
for example
s1= 100 s2= 200. S = 66
The total spring rate is always lower than the lowest spring rate.
even if
s1= 900 s2= 50, S = 47
but of course the 50 rated spring will collapse faster than the 900. once the 50 is collapsed, then its just a 900 spring.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">
but of course the 50 rated spring will collapse faster than the 900. once the 50 is collapsed, then its just a 900 spring. </TD></TR></TABLE>
so for the 1/S = 1/s1 + 1/s2 to hold s1 and s2 must never become fully compressed?
but of course the 50 rated spring will collapse faster than the 900. once the 50 is collapsed, then its just a 900 spring. </TD></TR></TABLE>
so for the 1/S = 1/s1 + 1/s2 to hold s1 and s2 must never become fully compressed?
well, its actually STILL a valid equation since if one spring is compressed the spring rate goes to infinity. basically turn s1 into a spring rate of 1000000000 (1/s1 = 0), and s2 = S
algebra owns....
algebra owns....
It is a softer "combined" rate until the tender becomes fully compressed (in a turn or bump). At that point you are only running on the stiffer main spring rate. It's just a method of making custom progressive rates that you can swap & fine tune...
Example:
Main spring = 500 lbs/in, and it can compress 5 inches before binding.
Tender spring = 500 lbs/in, and it can compress 2 inches before binding.
This means for the first 1000 lbs of vehicle weight (4 inches of combined spring compression), the combined spring rate of the tender/main springs would be 250 lbs/in. After 1000 lbs vehicle weight, the Tender would coil bind & you would be left with 3 inches of the main spring (until your main spring would bind) for a total of 2500 lbs of vehicle weight.
This is exactly how progressive springs work except the two different springs are wound into one by changing the coil pitch...
Example:
Main spring = 500 lbs/in, and it can compress 5 inches before binding.
Tender spring = 500 lbs/in, and it can compress 2 inches before binding.
This means for the first 1000 lbs of vehicle weight (4 inches of combined spring compression), the combined spring rate of the tender/main springs would be 250 lbs/in. After 1000 lbs vehicle weight, the Tender would coil bind & you would be left with 3 inches of the main spring (until your main spring would bind) for a total of 2500 lbs of vehicle weight.
This is exactly how progressive springs work except the two different springs are wound into one by changing the coil pitch...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">well, its actually STILL a valid equation since if one spring is compressed the spring rate goes to infinity. basically turn s1 into a spring rate of 1000000000 (1/s1 = 0), and s2 = S
algebra owns....</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">
The total spring rate is always lower than the lowest spring rate.
</TD></TR></TABLE>
well then that statment is not true. because once the tender become fully compressed its rate is infinate like you said, then the s2=S as you said, so it's not always lower.
Those look real nice Ryan! How much shock travel are those? Doesn't look to be much with where those bump stops are.
On the subject of helper springs, aren't those supposed to be fully compressed once the car is on the ground anyways? I mean, they are only there so when you jack up your car the spring doesn't come out of the top mount. But I guess its all a matter of how you tune the springs.
On the subject of helper springs, aren't those supposed to be fully compressed once the car is on the ground anyways? I mean, they are only there so when you jack up your car the spring doesn't come out of the top mount. But I guess its all a matter of how you tune the springs.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecvoodoo »</TD></TR><TR><TD CLASS="quote">It`s not a helper, it`s a tender. See my reply above that explains the difference
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Reading Ownz me!
So it resembles a tunable "progressive" rate spring, huh?
</TD></TR></TABLE>Reading Ownz me!

So it resembles a tunable "progressive" rate spring, huh?
youre taking the statement out of context. it should be obvious what you said as the contrary is given. what is not obvious is that even if you join a 900 spring with a 50 spring, its lower than 50, not somewhere in between which was the point.









