Originally Posted by wes
Part Number Colour Spring Rate lbs/inch
YS-1360 Black 9.67
YS-1355 Blue 10.45
YS-1465 White 11.01
YS-1460 Hot Yellow 12.85
YS-14525 Stainless 12.89
YS-14575 Hot Pink 13.09
YS-1455 Hot Green 13.75
YS-1450 Hot Orange 17.68
YS-1560 Dark Green 16.21
YS-1660 Red 18.29
YS-1655 Yellow 22.54
YS-1650 Green 24.87
YS-1760 Silver 25.89
YS-1755 Grey 26.38
YS-1750 Brown 32.08
Ok, I've been doing some research on this and I just need some clarification. Most of what I've read here seem to indicate that the blue springs are 10.45 but another reliable source tells me that it is 12.12 I just need to know which is sure since it makes a world of difference for me whether or not I will end up putting it in the front or rear. There are some differences in the two charts I have and I wanted to what people geberally follow and is more accurate. Thanks! Here's the spring rate chart that he gave me:
There are actually 2 versions of the spring rates floating around in the SD and BD threads on rctech.net. The 'original' one below was compiled by Ling Kang Tong, a fellow racer (an MIT grad who currently works in a lab at a bio company.) He happened to have access to a very accurate spring tester. His list is probably the more widely referenced list.
Although I'm not sure why the Yokomo Blue came out softer than the White on his list...
Spring Rates(lbs. / sq.in)
YOKOMO
Orange 18.87
Green 16.06
Pink 14.93
Yellow 14.71
White 12.94
Blue 12.12
RAYSPEED
Gray 19.90
Red 18.25
White 17.17
Yellow 14.87
Blue 14.29
Green 13.20
T A M I Y A
Purple 22.72
Gray 20.91
White/S 17.24
Blue/S 15.27
White 14.82
Blue 14.08
Yellow 13.33
Red/S 13.24
Yellow/S 12.90
Red 11.86
ASSOCIATED
White 40.00
Yellow 31.91
Purple 30.30
Copper 23.26
Red 23.06
Gold 18.35
Blue 16.53
Silver 13.89
Green 11.43