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Sand settings / crf450 10

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Hi,

It's sand time in France! bad weather and beach races championship.

I have some problems with my rear shock. I don't know how to set my rebound.

For sand conditions, we need a slower or a faster rebound?

When i ride some big bumps, for exemple in a fast turn, the tail goes left/right and it's difficult to keep the line.

actual shock configuration: 5.2 spring, sag 105mm, lowering linkage.

Thank you for your help.

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you want it stiffer and slower on the rear and stiffer on the forks but rebound on forks doesn't need to go slow like in the shock , you could add more sag for about 106mm and make the forks longer by 3mm by dropping them in the clamps

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What's your weight? I am thinking this because you have one step softer spring, lowering link and 105 race sag:thinking: I would say your rear end is too soft.

If you are 75-85kg I suggest you to run 54N spring with 102-104mm race sag. Low speed 2-3clicks stiffer, reb 2clicks slower.

You need also 4.7N or 4.8N fork springs. You can also run slower reb if thre are big sand bumbs.

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you want it stiffer and slower on the rear and stiffer on the forks but rebound on forks doesn't need to go slow like in the shock , you could add more sag for about 106mm and make the forks longer by 3mm by dropping them in the clamps

Thanks for your advice. I will test that this week end, i think my rebound is too fast. It's so difficult to have a perfect suspension setting for the sand! I will test different sag, I will come back to you.

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What's your weight? I am thinking this because you have one step softer spring, lowering link and 105 race sag:thinking: I would say your rear end is too soft.

If you are 75-85kg I suggest you to run 54N spring with 102-104mm race sag. Low speed 2-3clicks stiffer, reb 2clicks slower.

You need also 4.7N or 4.8N fork springs. You can also run slower reb if thre are big sand bumbs.

Thank you Jusa.

I weigh 72kg without gear. Last year, i run a 54n spring and it was too stiff. The shock ejected me to the front, after 2 or 3 big sand bumps. It's possible that it was caused by my fork, which it was too soft. Now, my oil level is higher (350mm of KYB 01) and i added a 3 mm washer. it works better. The spring is a 4.6mm (oem).

It's a good idea to put stiffer fork springs, as i ride a a larger tank (12l)

Kyb europe told me that my spring rate are ok for my weight, but sand conditions are very special.

i will test your settings this week end, and come back to you.

Thanks

Maxime

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