Spring Rate Charts

[Nova's Ark]

I am using four 1/8 scale nitro buggy front shocks on my J2-TT comp rig with TLT Axles. I am using four 1/8 scale nitro rear shocks on my sons AX-10. I have encountered some difficulty tuning the suspension on both rigs and it has taken some time to find info on spring rates, spring length and how they compare between the different manufacturers.

I like using the 1/8 scale nitro buggy shocks because they are strong. The shock shafts are all 3mm and the shock bodies are threaded aluminum. I run them upside down for a low C.O.G. They have been working well once you get the correct spring rate.

Please feel free to correct or add to it. Hopefully it will be useful to someone.

The first set is for Losi 8ight and 8ight T 1/8 scale:
Front:
Length 2.3"
Gray - hardest 5.6
White
Black
Green
Silver
Red - softest 4.1

Rear:
Length 3.1"
Purple - hardest 4.3
Gray
White
Black
Green
Silver
Red - softest 2.5

Spring rate chart for short on road style cars:
http://www.rcingreece.com/index.asp?prev=6&page=spring_comparison&super=38

Spring rate chart in general:
http://www.deccosoftware.com/forum/tech/SpringRates.htm

LOSI SPRING RATES (onroad cars?)
LOSA5108 1” Spring 20.0 Rate (Purple)
LOSA5110 1” Spring 25.0 Rate (Black)
LOSA5112 1” Spring 30.0 Rate (White)
LOSA5114 1” Spring 35.0 Rate (Orange)
LOSA5115 1” Spring 40.0 Rate (Yellow)
LOSA5117 1.15” Spring 7.6 Rate (White)
LOSA5118 1.15” Spring 8.6 Rate (Orange)
LOSA5119 1.15” Spring 9.6 Rate (Yellow)
LOSA5120 1.15” Spring 10.6 Rate (Pink)
LOSA5121 1.15” Spring 11.6 Rate (Red)
LOSA5123 1.15” Spring 12.6 Rate (Silver)
LOSA5125 1.15” Spring 14.6 Rate (Blue)
LOSA5126 1” Spring 17.5 Rate (Dark Green)


TC3 and Nitro TC3 Springs
Green 3941 12.000 lbs Softest
Silver 3942 14.500 lbs Softer
Blue 3943 17.000 lbs Soft
Gold 3944 19.500 lbs Medium Soft
Red 3945 22.000 lbs Medium
Copper 3946 25.000 lbs Medium Firm
Purple 3952 30.000 lbs Firm
Yellow 3953 35.000 lbs Firmer
White 3954 40.000 lbs Firmest


XRAY SPRING CHART:
YELLOW super soft 14 lbs.
WHITE soft 17.5 lbs.
BLUE soft-medium 22.5 lbs.
VIOLET medium 28 lbs.
PURPLE medium-hard 33 lbs.
RED hard 38 lbs.

 

[EeePee]

We like pictures. Losi springs.

 

[Grizzly4x4]

Pictures are all that some people look at. This way we trick them into learning. :lol:

Springs with part numbers below.

 

[Nova's Ark]

Your awesome EeePee :lol:. Thanks for the pictures.

 

[BeeRC]

Thanks for referring me here Nova's Ark. Does anyone know what the spring rate of the stock red Traxxas XXL Big Bore shocks is so that can used as a comparison with the Losi spring rates? I have the red Traxxas springs on the aluminum Big Bores and they are way too stiff......Thanks as always for any input!

 

[bigflex]

I just wanted to add one. They now have a Gold 2.75" spring with a 1.4 rating

 

[oldhippie]

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I'm running gold front, gray rear springs on my big bores.



Losi Springs
Part # length rate color
5144 2.75 1.4 gold
5146 2.75 1.6 gray
5147 2.75 1.8 white
5148 2.75 2.0 yellow
5150 2.5 2.3 pink
5152 2.5 2.6 red
5154 2.5 2.9 orange
5156 2.5 3.4 silver
5158 2.5 3.7 green
5160 <st1:metricconverter productid="2.5”">2.5”</st1:metricconverter> 4.1 Blue

 

[helhedded]

Does anyone know if there is anything softer than the Losi 1.4" ?

 

[TANK]

there is but I've only seen the Losi guys have them... i believe they're black or really dark grey. And the wire itself is super thin...

 

[T1DAVE]

This is a great post maybe it should be a sticky"thumbsup"

 

[limited77]

Anyone have the rates of the mini t springs?

 

[JeremyH]

I've looked for those myself but came up emtyhanded....however, I believe the red mini-t spring is close to the Gold and the pinks are quite a bit softer than that.

 

[clarkrw3]

Also has anyone checked the new axial springs vs. the losi golds? I have some of the new 1.04's and they seem stiffer than the losi golds to me....what say you?

 

[ol' gravy leg]

Also has anyone checked the new axial springs vs. the losi golds? I have some of the new 1.04's and they seem stiffer than the losi golds to me....what say you?

I've heard that from a few people. I'm not sure myself. I've thought of building a jig to test spring rates. One like this would be pretty easy. Or the Losi shock matching tool could probably tell you which ones are stiffer. LOSA99170

 

[JeremyH]

Also has anyone checked the new axial springs vs. the losi golds? I have some of the new 1.04's and they seem stiffer than the losi golds to me....what say you?

Both springs were brand new? Or were the golds well used? As springs get over compressed and then stretched out again, the spring can become damaged and feel softer...

 

[clarkrw3]

I've heard that from a few people. I'm not sure myself. I've thought of building a jig to test spring rates. One like this would be pretty easy. Or the Losi shock matching tool could probably tell you which ones are stiffer. LOSA99170

They were both new just out of plastic...

That is a great idea...I have one of those in my racing stuff"thumbsup"

 

[JeremyH]

They were both new just out of plastic...

That is weird....

 

[clarkrw3]

Ok so here is the test I did tonight taken by my Droid"thumbsup"

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[Stormin2u]

Anyone have the rates of the mini t springs?

X2 Mini T springs are a enigma wrapped in mystery. :roll:

 

[articzap]

Ok so here is the test I did tonight taken by my Droid"thumbsup"

No offense, but I'd like to see the springs compared on a spring tester. That takes any shock differences out of the equation.