But how dare they not send any hp gaining stickers with the springs! Hehe
Now I’m going to have to find time to work all this into my weekend. What a drag...
![Image](https://uploads.tapatalk-cdn.com/20180120/b5be850fd8ce4bf8755d756665d3b545.jpg)
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If springs are for conventional forks, then my experience is that they are sold that way. USD fork springs don't come with them, but do come with washers, in my experience.Snapp200 wrote:They are for the 03 Kdx200
Yeppers, 3647’s
I’ve never had a set with spacers you had to cut on your own. Is that normal?
Good stuff!Jason wrote:If springs are for conventional forks, then my experience is that they are sold that way. USD fork springs don't come with them, but do come with washers, in my experience.Snapp200 wrote:They are for the 03 Kdx200
Yeppers, 3647’s
I’ve never had a set with spacers you had to cut on your own. Is that normal?
Here's a bit more to put you to sleep.![]()
"Modern preload theory" is very little preload. For example, Race Tech will show 4 mm. For years in the past, it was 10 mm.
If you measure the amount of preload on a stock 1995 - 2006 KDX200 / 1997 - 2005 KDX220R, I think it is around 38 mm. That is WAY more than even what Race Tech recommended for years. I used to have an excel file from someone who made it. It showed the amount of spring rate for how far the spring was compressed. With the stock springs (.35 Kg / mm rate), the initial travel was stiffer than a .43. It was not long before it crossed over though.
Anyway, cut the RT spacer to provide very little preload. DO NOT use the stock spacers (at least not without cutting them shorter).
The stock springs in a 1989 - 1994 KDX200 are just 0.30 Kg / mm. INCREDIBLE.
[emoji30][emoji30]Jason wrote:Another point on fork springs is that a certain size may fit a few bikes, so the spacer would be a generic size, cut to fit a few different models.