Ken,
Trying to calculate or compare springs by measuring dimensions or
calculating is not very accurate. Also on multiple carbs, the springs
should be as closely matched as possible.
I use the method suggested by Jim Taylor at JCNA.
Put the spring in a clear plastic or glass tube. Apply the designated
weight on top & measure the length.
The following specs are given;
Blue = 2 5/8" high at 2.5 ounces
Red = 2 5/8" high at 4.5 ounces
Yellow = 2 3/4" high at 8 ounces
Green = 3" high at 12 ounces
Red/Green = 3 7/8" high at 11 1/4 ounces
Dave Russell
BN2
Freese, Ken wrote:
> I am wondering if the right springs are installed on my new HD8's. The
> manuals list a color code, which I have never seen on any SU. My new springs
> are .042 wire and 13.25 inches free length. My old carb were .046 wire and 9
> inches free length. The new springs aren't so easy to slide the dashpot
> over, either. Anyone know what is right or if these are equivalent?
> Ken Freese
> 65 BJ8
|