DragBikeMike
Serious Thumper
Offline
SuzukiSavage.com Rocks!
Posts: 4174
Honolulu
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Just based on the visuals of the EBC product I doubt I would install them. But lets move on to the actual spring constant tests. Note that the dimensional inspections came out OK. The EBC springs can probably be installed without grinding or filing on anything. So how did the spring force at installed height check out.
I checked the stock springs first. They were 39 lbs @ installed height (28mm), 44 lbs at 27mm, and 48 lbs at 26mm. That works out to a constant of about 4.5 lbs/mm. They were about 2 lbs shy of almost new springs but what the heck, they're used.
Then I checked Dave's EBC springs. They were 39 lbs @ 28mm, 43 lbs @ 27mm, and 48 lbs @ 26mm. Again, a spring constant of about 4.5 lbs/mm. Note that the new EBC springs apply the same pressure at installed height as a used stock spring, and 2 lbs less than a stock new spring.
Then I checked a couple of my brand new, right out of the sac, EBC springs. They dialed in at 24 to 25 lbs at 28mm, and went to coil bind at 40 lbs. I didn't even bother to measure the height. It was such a gross disparity that it didn't deserve any sort of measurement. A picture is worth a thousand words.
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