front fork free sag

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twowheelfanatic
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front fork free sag

Post by twowheelfanatic »

on a 2000 kdx 200 how much free sag should it have?
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Re: front fork free sag

Post by KDXGarage »

roughly a third is what I have read.
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IDRIDR
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Re: front fork free sag

Post by IDRIDR »

A third of what?
2003 KDX 220. RB Carb & Head Mods. Desert pipe. She's a runner!
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
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Sullyfam
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Re: front fork free sag

Post by Sullyfam »

I'd guess a third of total sag. Never heard of that, but I could see that (free sag and a % of race sag) being something to consider. Suspension gurus think of all sorts cool metrics...


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Tedh98
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Re: front fork free sag

Post by Tedh98 »

Dwight Rudder's formula:

Front suspension static sag should be 14% ( available travel in mm X .14 = static sag in mm)
Front suspension rider sag should be 25% (X .25 = Rider sag)
Rear suspension static sag should be 11% of available travel (X .11 = static sag)
Rear suspension rider sag should be 34% of available travel (X .34 = rider sag)
Last edited by Tedh98 on 10:44 pm Nov 26 2014, edited 1 time in total.
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IDRIDR
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Re: front fork free sag

Post by IDRIDR »

You have me confuzzled. The front fork free sag (no rider) should be 1/3 of total travel?

Free sag is without rider, isn't it? Bike weight only?

Just learning here. . .
2003 KDX 220. RB Carb & Head Mods. Desert pipe. She's a runner!
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
twowheelfanatic
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Re: front fork free sag

Post by twowheelfanatic »

me too.1/3 of total travel for free sag bike weight only seems excessive?
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Sullyfam
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Re: front fork free sag

Post by Sullyfam »

Sag or race sag, as I understand and use it, is measured by subtracting the length of travel when the bike is sitting on a stand with no weight (I.e. Wheels in then air) minus the length of travel with the rider on the bike fully suited up. This distance is typically 100-110 millimeters or 4 to 4.3 inches, which would put it at roughly 1/3rd the shock tracker of 12". Free sag I thought was the distance between the bike on the stand minus the distance off the stand but with no rider - or so I thought. I've always set the race sag and never really focused on free sag.


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Re: front fork free sag

Post by Sullyfam »

Sorry, meant shock *travel* not shock tracker (dang auto correct!) and when I say free sag it is the same measurement Tedh98 refers to as static sag. Also, my comments refer to the rear shock. For the front I just but the right spring for my worth and roll [emoji51]


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Re: front fork free sag

Post by KDXGarage »

my bad


go with what tedh98 reposted from Dwight Rudder.
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twowheelfanatic
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Re: front fork free sag

Post by twowheelfanatic »

thanks for the information.thats what i will do.planning on doing forks friday and a test ride saturday here in the midwest
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