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Front air forks psi vs weight for DJ bike


Awakener

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Hi all is there a matrix that you can refer me to so that I can set my son's front air shocks based on his weight. I could do the old fashion try and and adjust but would be nice to have a guideline.

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Hi all is there a matrix that you can refer me to so that I can set my son's front air shocks based on his weight. I could do the old fashion try and and adjust but would be nice to have a guideline.

 

How old is he, or rather, how much does he weigh ?

 

 

Our 9 year old is just too light ...  Simply cant set it up with sag they way we do our setup ....

 

 

I had to experiment to find what is to hard, and kept reducing the pressure until the shock was too soft to really work (still minimal sag).  

 

 

 

And yet, when you look at the videos the shock DO work when he goes over bumps on the trail.

 

 

 

Would love to hear from others at what weight their kids actually started using sag as a way of setting the shock.

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How old is he, or rather, how much does he weigh ?

 

 

Our 9 year old is just too light ... Simply cant set it up with sag they way we do our setup ....

 

 

I had to experiment to find what is to hard, and kept reducing the pressure until the shock was too soft to really work (still minimal sag).

 

 

 

And yet, when you look at the videos the shock DO work when he goes over bumps on the trail.

 

 

 

Would love to hear from others at what weight their kids actually started using sag as a way of setting the shock.

Howzit, my son is 11 but he is a big boy, he is over 1.5m tall and about 58kg

 

The front shock looks like it's close to bottoming out when he is doing small jumps so I think I will need to stiffen it up a bit, rather let him take a bit of arm pump then bottom out the forks and fly over ha ha

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Howzit, my son is 11 but he is a big boy, he is over 1.5m tall and about 58kg

 

The front shock looks like it's close to bottoming out when he is doing small jumps so I think I will need to stiffen it up a bit, rather let him take a bit of arm pump then bottom out the forks and fly over ha ha

For DJ. Higher is better. Keep adding 5psi at a time. He will need more pressure as he gets heavier.

 

Pomp, test, repeat.

 

Also. Tyre pressure for DJ is very different to normal MTB. More along the lines of BMX pressures. 40 psi plus.

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To add to what Captain FB is saying, what you 'actually' want to do is ad internal air can tokens, so you can run the fork at a 'normal' pressure so it still grips and has small bump compliance but ramps up quicker due to the air can being 'full' of tokens.

 

It stops the pogo stick fell while railing berms and allows you to stay planted and maintain speed with confidence, but ramps up on the big hits.

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