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Old 12-06-2007, 05:44 PM   #1
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Default 1/8 onroad shock spring?

Can someone please tell me how they rate the 1/8 onroad shock stiffness of the springs according to color. Also what rating is recommended. I have a PRP XR8.

Thank You,
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Old 12-06-2007, 08:24 PM   #2
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Default 1/8 on-road shock

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Originally Posted by Supraman93 View Post
Can someone please tell me how they rate the 1/8 onroad shock stiffness of the springs according to color. Also what rating is recommended. I have a PRP XR8.

Thank You,
For the XR-8, use the short white Mugen springs in front, and the gray XR-8 springs in the rear.
Try 50 weight oil for front shocks, and 40 weight oil for the rear
I also have an XR-8, but also have some Evolvas, and Mugens
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Old 12-08-2007, 09:56 AM   #3
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BRC358,

Thank you for the info and I'll try that. I was looking at these Serpent springs
http://ashfordhobby.com/detail.aspx?ID=5964
and was wondering if I choose their white for the front and the Gray for the back would it be the same as you recommended also I would be using the shock oil you suggested.

Thank You,
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Old 12-08-2007, 10:15 AM   #4
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the serpent and mugen springs are not consistent. for serpent white and grey are at the extreme (white is softest and grey is the hardest). neither of these are commonly used.

however the mugen white seem almost a standard. i don't know the mugen range but i would expect it to be some kind of medium rate given its popularity
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Old 12-08-2007, 02:03 PM   #5
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In Mugen Seiki

Purple = 1.6mm
Blue = 1.7mm
Gray = 1.8mm
White = 1.9mm
Red = 2.0mm

Front spring is shorter than rear.
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Old 12-10-2007, 07:47 AM   #6
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Default Spring Rate Chart!

Here's an Older Spring Rate chart with
most of the Mfg's and their colors.
Hope it helps!

T
Attached Files
File Type: pdf Spring Rate Chart.pdf (14.1 KB, 223 views)
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Old 12-10-2007, 01:03 PM   #7
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This one is more complete ...

springrate1.jpg

Try to find out the setup of other cars from drivers with a lot of experience at a specific track. You can find a lot of setup sheets around the WWW. You might even glance at the setup of a different brand than your own car. Note that other driver's setups might work fine for them, but might not suit your own driving style / skills, but it never hurts to use it as a guideline / reference ...
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Old 12-10-2007, 05:49 PM   #8
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Thanks guys for your info and charts but I'm still confused which of the new Serpent springs to get according to the ratings. Here is their front shock chart:

New Front Spring ratings
Part Number Color N/mm lb/inch Lenght
SER 160300 White 2,3 13,0
23mm
SER 160301 Yellow 2,8 16,0 23mm
SER 160302 Orange 3,4 19,5 23mm
SER 160303 Red 4,1
23,5
23mm
SER 160304 Pink 4,9
28,0
23mm
SER 160305 Blue 5,8 33,0 23mm
SER 160306 Purple 6,8 39,0 23mm
SER 160307 Green 8,0 45,5 23mm
SER 160308 Gray 9,0 51,5 23mm
SER 160309 Black 10,0 57,0 23mm

and here is their rear spring chart:

New Rear Spring ratings
Part Number Color N/mm lb/inch Lenght
SER 160320 White 2,3 13,0
27mm
SER 160321 Yellow 2,8 16,0 27mm
SER 160322 Orange 3,4 19,5 27mm
SER 160323 Red 4,1
23,5
27mm
SER 160324 Pink 4,9
28,0
27mm
SER 160325 Blue 5,8 33,0 27mm
SER 160326 Purple 6,8 39,0 27mm
SER 160327 Green 8,0 45,5 27mm
SER 160328 Gray 9,0 51,5 27mm
SER 160329 Black 10,0 57,0 27mm

Can someone please tell me what rating or color would be a good starting point.

Thank You,
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Old 12-29-2007, 02:40 PM   #9
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I received the New Serpent front + rear springs with their Pink rating and they seem pretty good. Haven't tried onroad until it's warmer. I also put some new 50w oil in the front and 40w in the rear as brc358 suggested.

I also got a good deal on the Bay for some new Serpent Blue and Yellow complete spring sets for $8.00 just in case these don't work out.
Attached Thumbnails
1/8 onroad shock spring?-xr8-serpent-front-shocks.jpg   1/8 onroad shock spring?-xr8-serpent-rear-shocks.jpg  
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