Vivid Tune for Session 88

FCLinder · Jan 20, 2009

nugget said:
Which tune will fit the Session 88?

According to the charts i would need a 'C' Tune but i've read somewhere that the Vivids on the Session used for the Boxxer launch were a 'B' Tune.

Anyone got any insight?

Heres the chart,
Tunes:
Tune A: 2.0 - 2.4 Leverage Ratio
Tune B: 2.4 - 2.85 Leverage Ratio
Tune C: 2.85 - 3.3 Leverage Ratio

Avg Leverage Ratio for the Session is 2.9

Thanks in advance

I would call Trek or Sram on that one to make sure. Not to many people on here are running the Vivid on the new 88 yet.

Good luck,

Wilson · Jan 20, 2009

I would also be interested in knowing wich tune fit the session so if you ever contact Sram or Trek let us know what they said!

motomike · Jan 20, 2009

The B tune is really the only one available right now direct from SRAM. The A and C tunes only come OEM right now apparently. I've been trying to get a different tune for a while now with not too much luck.

FCLinder · Jan 20, 2009

motomike said:
The B tune is really the only one available right now direct from SRAM. The A and C tunes only come OEM right now apparently. I've been trying to get a different tune for a while now with not too much luck.

You need to call Richard on that one Mike. He can help you get it being OEM.

rowlands · Jan 20, 2009

motomike said:
The B tune is really the only one available right now direct from SRAM. The A and C tunes only come OEM right now apparently. I've been trying to get a different tune for a while now with not too much luck.

there available here in canada :biggrin:

[TA] · Jan 21, 2009

nugget said:
Which tune will fit the Session 88?

According to the charts i would need a 'C' Tune but i've read somewhere that the Vivids on the Session used for the Boxxer launch were a 'B' Tune.

Anyone got any insight?

Heres the chart,
Tunes:
Tune A: 2.0 - 2.4 Leverage Ratio
Tune B: 2.4 - 2.85 Leverage Ratio
Tune C: 2.85 - 3.3 Leverage Ratio

Avg Leverage Ratio for the Session is 2.9

Thanks in advance

The 88's leverage ratio range is from 3.13-2.57.

4130biker · Jan 21, 2009

Just curious, why not run the dhx that is "custom" tuned for the bike that it comes with? I was under the impression that this is one of the best things about the bike- at least that's what Trek wants us to think..
Is the dhx set-up lacking something major?

4130biker · Jan 22, 2009

nugget said:
The DHX that came stock with the bike is amazing, its one of the best DHX i've tried. I didn't plan on changing it out until after i brought it for service at Fox Service Centre.
The shock came back not the same, it doesn't move out of the way for high speed hits, the rebound is a lot slower then original and all FOX said was, its normal, We didn't change anything.

Now i'm left with any other DHX. Its time for a proper shock.

That sucks they messed it up for you! Slow rebound is a bummer. Hopefully the vivid will straighten it out.

dhkid · Jan 23, 2009

cool, so much for your 'off season' huh.

july is only a few months away!

tricki · May 16, 2011

I have the 2009 Session 88 and I'm considering getting the 2011 Vivid. What's your experience with the Vivid on your bike? Any good?

Mo(n)arch · May 17, 2011

The DHX that came stock with the bike is amazing, its one of the best DHX i've tried. I didn't plan on changing it out until after i brought it for service at Fox Service Centre.
The shock came back not the same, it doesn't move out of the way for high speed hits, the rebound is a lot slower then original and all FOX said was, its normal, We didn't change anything.

Now i'm left with any other DHX. Its time for a proper shock.

I would try to get a) once again a service from them, because they messed it up. I heard that a couple times before. Maybe try to talk to people from trek and let it service from there.
It's not possible, that Fox messed up and you have to buy a new shock to make your bike work!
Or b) try to get a new dhx "Session tuned".

If I'm understanding right, the "serviced" shock you got, is now a standard dhx (standard tune).
If everything else doesn't work out, sell it and get a new "session tuned" shock. Every Trek dealer can order one for you.

armada · May 17, 2011

does anybody know what the session tune actualy is? special shimstack or oil weights or what?
in my part of the world the fox rep is a jerk, the trek rep is a jerk :S

Steve M · May 17, 2011

nugget said:
The DHX that came stock with the bike is amazing, its one of the best DHX i've tried. I didn't plan on changing it out until after i brought it for service at Fox Service Centre.
The shock came back not the same, it doesn't move out of the way for high speed hits, the rebound is a lot slower then original and all FOX said was, its normal, We didn't change anything.

Now i'm left with any other DHX. Its time for a proper shock.

Sounds a lot like they rebuilt it with a totally different viscosity oil. If the valving is the same, that seems to be the most likely culprit. Ask them what oil they used and let us know.

armada · May 23, 2011

not realy the apropriate tread but does anybody have any sugestions about susspension setup?
i have a 2010 session with fox dhx rc4, 500 ti spring and would like to know how many clicks of everything you are running, i am 177 lbs without gear.

tuumbaq · May 23, 2011

armada said:
not realy the apropriate tread but does anybody have any sugestions about susspension setup?
i have a 2010 session with fox dhx rc4, 500 ti spring and would like to know how many clicks of everything you are running, i am 177 lbs without gear.

This would be a pretty good place to start :

http://www.trekbikes.com/pdf/2010/suspension/session.pdf

Now a #500 spring seems WAY over sprung for your weight , I cant even get more than 15% sag if I go by Trek's recommended spring for my weight and have to run a step down to get 30%According to Trek you should be running a #450.

Surely you've never measured your sag havent you ?

armada · May 23, 2011

newer measured sag

i took the 400 spring and went out to ride, was to soft, but now i cant decide betwen the 450 and 500, so should i go with the 450 and more compresion or 500 with the i9 bearing and less compresion?

tuumbaq · May 23, 2011

armada said:
newer measured sag i took the 400 spring and went out to ride, was to soft, but now i cant decide betwen the 450 and 500, so should i go with the 450 and more compresion or 500 with the i9 bearing and less compresion?

what you should do FIRST is to measure your freaking sag bro?!! WOULD you ever go out out and buy fancy shoes without making sure you get the right size? I dont think you would, why you would buy a FANCY bike and not be bothered having the suspensions dialed????

You simply cannot rely on the number off of the spring...9 out of 10 times the spring rates are not accurate and could be off by as much as 50 pounds or even more.

Do this FIRST, then follow Trek's recommendation as a baseline and THEN if you feel like something's not right, figure out exactly what it is you dont like and come back here to ask about it.Right now you question makes no sense at all unless if you asking if running more compression is a good thing in general...??

William42 · May 23, 2011

tuumbac is spot on.

Vivid Tune for Session 88

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