Tips on preload adjusting and 'sag' level on forks?
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Tips on preload adjusting and 'sag' level on forks?
I was reading around and discovered you should have a certain 'sag' on your front fork when you sit on the bike? I have a XCR Suntour 100mm fork ( https://www.srsuntour-cycling.com/SID...etail&tnid=144 )... It has preload adjust and I've got a decent idea on how they work..
Is there any good advice on what range the sag should be in? I'm 145-150 pounds, and just ride xc, lots of trails with some downhills with rocks and rock gardens. I have a Giant Yukon, the fork came stock on it.. I plan on getting a better fork in the future but I'm going to wear this one out first.
I've seen some people say no sag and others 10-15mm and some a full inch. Is just just on preference or is there a level of sag that will allow you to use most of your suspension without bottoming out on the trails?
Is there any good advice on what range the sag should be in? I'm 145-150 pounds, and just ride xc, lots of trails with some downhills with rocks and rock gardens. I have a Giant Yukon, the fork came stock on it.. I plan on getting a better fork in the future but I'm going to wear this one out first.
I've seen some people say no sag and others 10-15mm and some a full inch. Is just just on preference or is there a level of sag that will allow you to use most of your suspension without bottoming out on the trails?
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To some degree it's personal preference, but sag does serve a purpose; it gives your bike "negative" travel so the tires maintain contact with the ground better as the wheel rolls off small bumps, roots, etc. This gives you better control.
I think the general recommendation is to have about 25-35% of your total travel in sag. That's measured with just your weight on the bike, in your normal riding position. The easiest way to measure it is to put a zip tie on the leg, sit down, get off to check the zip tie position, then adjust.
And feel free to play around a little bit with it so you can get a feel for what works best for you.
I think the general recommendation is to have about 25-35% of your total travel in sag. That's measured with just your weight on the bike, in your normal riding position. The easiest way to measure it is to put a zip tie on the leg, sit down, get off to check the zip tie position, then adjust.
And feel free to play around a little bit with it so you can get a feel for what works best for you.
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Also I noticed that it has two red markers on the preload adjusters.. should those be pointing in opposite directions or exactly the same direction as when I bought the bike? When I first got the bike the knobs were turned like \ / or should they be like: | |, \ \, / /, - -
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for xc and little else thrown in Id say adjust to about 10-20% sag( 10-20mm on your fork). this will give a little less plushness for the technical stuff for better quickness and less pedal bob on climbs since you arent a huge downhiller/ freerider.a little experimentation will help you fine tune exactly what will give you the best of both worlds, bump absorbsion and control without mushiness or bouncing off of rocks/roots instead of through them
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I'm not sure on the red markers...are you talking about separate adjustment on each leg? I don't know...my Fox has preload adjust on one leg and rebound adjust on the other.
I strongly suspect it doesn't matter.
I strongly suspect it doesn't matter.
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Originally Posted by Nickds7
I was reading around and discovered you should have a certain 'sag' on your front fork when you sit on the bike? I have a XCR Suntour 100mm fork ( https://www.srsuntour-cycling.com/SID...etail&tnid=144 )... It has preload adjust and I've got a decent idea on how they work..
Is there any good advice on what range the sag should be in? I'm 145-150 pounds, and just ride xc, lots of trails with some downhills with rocks and rock gardens. I have a Giant Yukon, the fork came stock on it.. I plan on getting a better fork in the future but I'm going to wear this one out first.
I've seen some people say no sag and others 10-15mm and some a full inch. Is just just on preference or is there a level of sag that will allow you to use most of your suspension without bottoming out on the trails?
Is there any good advice on what range the sag should be in? I'm 145-150 pounds, and just ride xc, lots of trails with some downhills with rocks and rock gardens. I have a Giant Yukon, the fork came stock on it.. I plan on getting a better fork in the future but I'm going to wear this one out first.
I've seen some people say no sag and others 10-15mm and some a full inch. Is just just on preference or is there a level of sag that will allow you to use most of your suspension without bottoming out on the trails?
Last edited by Quick_Torch C5; 06-25-07 at 10:25 PM.