What should the sag be on a dirt bike?

What should the sag be on a dirt bike?

Once the rider sag is set, static sag should be between 30 and 50mm. Just balance the bike off the stand without the rider and measure the same spots again; do the math to find the difference between the bike on and off the stand. If you are outside of that static measurement range, you need a stiffer or softer spring.

How does sag affect dirt bike?

If the race sag is too tall, this means your rear shock doesn’t compress enough with your weight on it, and the rear end of your bike is riding too high. This affects your riding by adding more weight to the front and taking weight off the rear. This can help you in sharp corners but hurt you in rough straightaways.

What should my rider sag be?

Ideal rider sag can range from 25mm to 40mm or more, depending on the bike and how you intend to use it. A good rule of thumb is to aim for 30mm for street use, and 25mm for track use. 9. The sag amount is adjusted by adding or removing spring preload front and rear.

How is race sag calculated?

Sag is calculated by averaging L2 and L3 and subtracting it from fully extended. With a Sag Master there is no need to subtract since the tape was locked and zeroed at full extension. Note: FREE SAG is the amount the bike compresses with the weight of the bike only – no rider. Use the same method as outlined for Sag.

How much free SAG should a dirt bike have?

How much free sag should there be? Free sag should be between 30mm and 40mm. If you have more than 40mm of free sag, your shock spring is too stiff. Less than 30mm and your spring is too soft.

How do I know if I have free sag?

Free sag can only be checked after race sag is set. How do you check free sag? Once you have the preload set at 100mm, or your favorite number, for your weight, position the bike on level ground, grab the bike under the rear fender and lift up—like you are going to pick the bike up off the ground.

What should free sag be?

How can I reduce my race sagging?

measurements. Adjust spring preload as necessary to obtain the correct handling results. Note: Increasing spring preload will decrease race sag and visa versa. The race sag is set to insure that the suspension works in its most effective rage and to keep a good chassis weight balance, front to rear.

How do I know if I have static sag?

To measure static sag, take your first measurement with your bike on its stand, just as you do when you set your race sag. Get an accurate measurement from your rear axle upward (at a slight angle in the direction the rear wheel’s arc) to the junction between the fender and side panel.

How important is free sag?

Static, or free sag is the amount the suspension compresses from fully unloaded under the bike’s own weight and is very important on any bike except full suspension MTB where the bike weight is so much less than the rider’s weight, the suspension does not compress under the bikes weight.

How can I improve my sagging rider?

After loosening the shock springs lockring you can turn the spring preload ring to increase or decrease sag. Usually 1 complete turn changes the sag by about 3mm. If your shock is hot from riding it is best to note sag changes by the amount of turns in or out since the rider sag was set.

What should the SAG be on a dirt bike?

The recommended range for sag depends mainly on the engine size of your dirt bike, as well as the make and model in some cases. Read your bike’s owner’s manual or search online to find the recommended sag for your specific model of bike. For example, a 50cc-65cc dirt bike should have a rider sag of 70 mm and a static sag between 25-35 mm.

What does static sag on a bike mean?

A: Static Sag or Race Sag is the amount the bike compresses from fully extended, with the rider on board. Here’s how to measure it. First extend the forks or shock completely and measure from the wiper to the bottom of the triple clamp on forks or from the axle to a vertical reference point on the chassis.

How does race sag affect your riding performance?

Also, remember you may adjust your race sag within your specified range depending on track conditions and riding style. Less sag can improve turning ability at the cost of slightly reduced overall stability. More sag can improve overall stability but may reduce turning performance slightly.

How big should the spring be on a dirt bike?

On full size bikes this can range from 25-45mm. If you are towards the extremes of this range you should consider a different shock spring. If you have around 25mm or less free sag your spring has too much preload on it to get the proper rider sag and your spring rate is too soft.