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Old 06-14-2018, 01:16 PM   #1 (permalink)
Cyborg ECU
California98Civic's Avatar
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,297

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
Thanked 2,169 Times in 1,467 Posts
Good suspension coil spring cutting primer

I was curious about cutting coil springs on my suspension. Some of you have done it. I found an interesting article on the topic. Good and brief, it seems like a good primer.


1. Measure the thickness of the coil using a micrometer. Write that **** down.
2. Measure the diameter of the wind. This is to the outer edge. Write it down homie.
3. Count the number of *active coils. The number of coil winds helps determine the length.
4. Throw it into a calculator, you can find one here: http://www.engineersedge.com/spring_comp_calc_k.htm
5. This is an extra step, but some people deal in metric or imperial values, here’s a converter for use to walk between the two worlds.http://www.hraefn.net/projects/spring_rates.php
And more on the author's page...

See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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