Fork tuning {Fox Evol 34}

[Reme Le Hane]

So... After reading in another thread I found out that my Scott came with 5 volume spacers in the fork and apparently taking 1 or 2 out can improve comfort while ridding, after updating my tool kit I did this and it became quite a bit more comfortable and responsive on those smaller bumps.

 

To see if it could be made even better I pulled out a 3rd one, but that had the complete opposite effect, now at speed ~30kph,its almost as if its locked out its soo firm. Tried tweaking the rebound, but not sure how much of a role it place in this context.

 

So before playing darts in a blackout room randomly changing this, anyone have suggestion on the next direction, put the spacer back or fiddle with the air pressure?

 

Shots and a Merry Xmas to all.

[ChrisF]

Subscribed ....

 

I have removed ONE volume spacer, and very happy with the result.

 

Have been contemplating removing a second ....

[Meezo]

have a look at these, they give you an idea

 

 

 

it all depends on you whatever you feel comfortable with.

 

https://www.pinkbike.com/news/rockshox-suspension-tuning-tips-2015.html

 

i had the same and remove 1 of 2, my fork is feeling alot better now

[BaGearA]

Volume spacers are in the air side and rebound is one the damping side both are completely independent of each other 

 

removing volume spacers will make more of A difference in the mid and end stroke initial compliance is not affected by volume spacers very much

 

 

 

Likely to also have happened is that when removing the 3rd volume spacer you just pumped it up staright to your riding pressure , on any fork ( especially EVOL forks ) you have to cycle the fork a few times after every 30psi to equalize the negative chamber this usually happens around 40% stroke

 

so Now you have very high pressure in your positive chamber and noting in the negative to aid in break-away force causing the fork to feel very stiff 

 

** Unlikely but possible:

Your fork has A Remote Grip damper which are tricky to clock so something might have happened there to cause it to be in A semi-locked out state 

[Reme Le Hane]

Subscribed ....

 

I have removed ONE volume spacer, and very happy with the result.

 

Have been contemplating removing a second ....

 

Wasn't it your thread I got the idea from, that one about Scott Spark 940 or... something like that.

 

I went right away and took out 2 as that what the LBS said, they also suggested taking out the 3rd one, but I only slightly know what I am doing.

 

 

 

have a look at these, they give you an idea

 

 

 

it all depends on you whatever you feel comfortable with.

 

https://www.pinkbike.com/news/rockshox-suspension-tuning-tips-2015.html

 

i had the same and remove 1 of 2, my fork is feeling alot better now

 

I had 5 in a 120mm, 2 made a big difference one the starting end

 

Volume spacers are in the air side and rebound is one the damping side both are completely independent of each other 

 

removing volume spacers will make more of A difference in the mid and end stroke initial compliance is not affected by volume spacers very much

 

 

 

Likely to also have happened is that when removing the 3rd volume spacer you just pumped it up staright to your riding pressure , on any fork ( especially EVOL forks ) you have to cycle the fork a few times after every 30psi to equalize the negative chamber this usually happens around 40% stroke

 

so Now you have very high pressure in your positive chamber and noting in the negative to aid in break-away force causing the fork to feel very stiff 

 

** Unlikely but possible:

Your fork has A Remote Grip damper which are tricky to clock so something might have happened there to cause it to be in A semi-locked out state 

 

Strange, vary many people told me different, the initial is the reason to reduce the volume spacer to give the air more room allowing it to respond sooner, even my LBS told me that, they were dumbfounded when they found out scott stuck 5 spacers in a 120mm.

 

How do you do the cycling thing then? on all 3 adjustments I literally just went up to riding pressure, well slightly less on the 2nd and 3rd adjustments. 

[BaGearA]

Wasn't it your thread I got the idea from, that one about Scott Spark 940 or... something like that.

 

I went right away and took out 2 as that what the LBS said, they also suggested taking out the 3rd one, but I only slightly know what I am doing.

 

 

 

 

 

I had 5 in a 120mm, 2 made a big difference one the starting end

 

 

 

Strange, vary many people told me different, the initial is the reason to reduce the volume spacer to give the air more room allowing it to respond sooner, even my LBS told me that, they were dumbfounded when they found out scott stuck 5 spacers in a 120mm.

 

How do you do the cycling thing then? on all 3 adjustments I literally just went up to riding pressure, well slightly less on the 2nd and 3rd adjustments.

 

So think of your fork as a bath tub /bucket

 

If you throw an apple in either you should see a difference in the bucket much easier

 

So when your fork is at extension the positive chamber is at it's largest and A 10cc volume spacer will make a little difference to the overall volume , now at full compression the positive chamber is at it's smallest and a 10cc volume spacer will make a much bigger difference

 

Make sense ? I don't know what exactly is the best way to describe it.

 

 

Take your fork down to 30PSI and then try compres it all the way (you might hear a small pisssttt) then go up another 30 and compress it few times again , then repeat until you get to your riding pressure

[Alouette3]

I was told as a good ballpark setup

 

Set up pressure so that you get your required Sag and small bump compliance, then add tockens to prevent fork from bottoming out at that pressure.

[Reme Le Hane]

I was told as a good ballpark setup

 

Set up pressure so that you get your required Sag and small bump compliance, then add tockens to prevent fork from bottoming out at that pressure.

Which makes sense, unless they start you with the maximum tokens and now you need to do odd math backwards.

[Reme Le Hane]

So think of your fork as a bath tub /bucket

 

If you throw an apple in either you should see a difference in the bucket much easier

 

So when your fork is at extension the positive chamber is at it's largest and A 10cc volume spacer will make a little difference to the overall volume , now at full compression the positive chamber is at it's smallest and a 10cc volume spacer will make a much bigger difference

 

Make sense ? I don't know what exactly is the best way to describe it.

 

 

Take your fork down to 30PSI and then try compres it all the way (you might hear a small pisssttt) then go up another 30 and compress it few times again , then repeat until you get to your riding pressure

I get what you saying, science was never my thing, it made sense what many said.

 

It makes sense with more scape for air under the same pressure it reacts at lower forces, which is what it felt like after taking 2 out, it was more responsive at the smaller bumps than it was with 5 spacers.

 

Redid the front pressure now, just wanna check the sag to see if I need any more in.

[BaGearA]

I was told as a good ballpark setup

Set up pressure so that you get your required Sag and small bump compliance, then add tockens to prevent fork from bottoming out at that pressure.

In nutshell that's exactly what it is

[BaGearA]

Which makes sense, unless they start you with the maximum tokens and now you need to do odd math backwards.

The shorter travel a fork the more spacers it will come with from factory since you have more limited time for the airsping to rump to avoid harsh bottom out

[Reme Le Hane]

So, went and popped out a 4th spacer, so down to 1 now and I am in my happy place, hands are not sore from ripping through the more rutty terrain and using all my travel again, could pop in 2 or 3 more psi in.

 

So happy now.

[ChrisF]

So, went and popped out a 4th spacer, so down to 1 now and I am in my happy place, hands are not sore from ripping through the more rutty terrain and using all my travel again, could pop in 2 or 3 more psi in.

 

So happy now.

 

nou krap jy ...    

 

may just have to take out that flattened socket and play some more on my side ....

 

 

 

If I do small jumps I quickly use the full length of the shocks.  apparently this is where the progressive nature of the multiple spacers are a benefit ....

 

 

removing the spacers should be gentler on my wrists though ....

 

 

comfort vs sports .....

 

 

 

being an outoppie that takes anti-inflamatories for my wrists and knees, the answer should be straight forward .... 

[Reme Le Hane]

nou krap jy ... [emoji317]

 

may just have to take out that flattened socket and play some more on my side ....

 

 

 

If I do small jumps I quickly use the full length of the shocks. apparently this is where the progressive nature of the multiple spacers are a benefit ....

 

 

removing the spacers should be gentler on my wrists though ....

 

 

comfort vs sports .....

 

 

 

being an outoppie that takes anti-inflamatories for my wrists and knees, the answer should be straight forward ....

It depends on how you ride, but as someone mentioned above, you set for comfort and add spacers to stop bottoming out.

 

I will likely need to add in as my mtb balls inflate over time. [emoji23]

[thebob]

I went to 130mm travel on my Fox 34 equipped Spark and ditched the TwinLoc for a standard sweep adjuster. Anyway, Fox recommended 3 spacers. I run the same pressure as usual to get the correct sag (25% / 32mm). The bike was very harsh up front. My bars felt like they wanted to jump out my hands all the time. One spacer less and all is good. Bike is comfortable and controlled ????????

[Reme Le Hane]

I went to 130mm travel on my Fox 34 equipped Spark and ditched the TwinLoc for a standard sweep adjuster. Anyway, Fox recommended 3 spacers. I run the same pressure as usual to get the correct sag (25% / 32mm). The bike was very harsh up front. My bars felt like they wanted to jump out my hands all the time. One spacer less and all is good. Bike is comfortable and controlled [emoji1303]

One of the guys at the lbs also had the 130 on his spark and pretty much said they same thing, popped 1 out and has a much better ride.