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I need some help determining how to get a DBinline on my trek w/ DRCV

blindboxx2334

blindboxx2334

Turbo Monkey
Mar 19, 2013
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Wets Coast
So, i know nothing about shock sizing and modding things to fit other than one bike usually uses one shock size.

my trek is a fuel ex. it uses the ****ty proprietary 7.25x2.0 shock (184x50). i would love to put a CCinline on it.

they make these two sizes 184 x 44mm // 190 x 50mm , i emailed them to see if i could do a custom order and they were not having it..

so, i am curious... if i buy the 184, what will the travel be with 44mm stroke? will i loose travel? or should i just buy the 190? if i buy the 190, how do i get the 6mm in difference to mount up?

i was told i could run offset bushings to makeup for the difference in distance, although i know offset bushings change the geo and BB of the frame. i do not want this.. i just want a nicer shock for the bike, since its the weak link in this bike.
 
jonKranked

jonKranked

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Nov 10, 2005
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a longer i2i shock changes the geo of a frame. when offset bushings are used in conjunction w/ a longer i2i shock, it *should* negate any geo changes. (assuming you can get an offset that's equal to the extra length of the shock, in this case 6mm).
 
blindboxx2334

blindboxx2334

Turbo Monkey
Mar 19, 2013
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hmmm, that seems pretty easy. is there a standard offset for offset bushings?

im not sure if i could do it all in the lower link/bushing. it appears to use a standard bolt bushing setup. while the top uses bolts that thread into the shock itself, as well as a bearing in the upper link.
 
M

marshalolson

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May 25, 2006
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what size hardware is in the trek? 6mm bolts (which can offset 3mm each for 6mm total) or 8mm bolts (which can offset 2mm each for 4mm total).

120mm travel / 50mm stroke = 2.4 average ratio. going to a 44mm stroke shock would yield about 105mm of wheel travel.
 
blindboxx2334

blindboxx2334

Turbo Monkey
Mar 19, 2013
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CrabJoe StretchPants said:
Unless you're 1/2 bionic, you're not going to notice the geo difference from the additional 6mm i2i.
Click to expand...
i know its really small amount. but i would like to keep it the same way it came. i really like the way the bike is now and do not want to change the geo..

with that said. it would raise the bb, correct? do you know how much?
 
'size

'size

Turbo Monkey
May 30, 2007
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edited for 29er error.

so...stock travel = ~5.12
shorter shock = ~4.48
longer i2i shock = ~5.12, no geo change if you can get 2 x 3mm offset bushes in there.
 
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'size

'size

Turbo Monkey
May 30, 2007
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jonKranked said:
the longer i2i shock has the same stroke as OP's current shock, so no change in travel.
Click to expand...
i was numbering based on the trek website saying the stroke is 1.875 not 2.0. if it is indeed 2.0 then yes, travel stays the same and that would also change the shorter stroke number as well.
 
blindboxx2334

blindboxx2334

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Mar 19, 2013
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marshalolson said:
what size hardware is in the trek? 6mm bolts (which can offset 3mm each for 6mm total) or 8mm bolts (which can offset 2mm each for 4mm total).

120mm travel / 50mm stroke = 2.4 average ratio. going to a 44mm stroke shock would yield about 105mm of wheel travel.
Click to expand...
i will have to measure them when i get home.. the top appears to be m10 or m8 aluminum bolts that thread into the shock itself.

the bottom i believe is just a standard m6. again, i will have to verify when i get home.
'size said:
what year is your bike? the trek website shows a shock of 7.25x1.875 for this current bike.
Click to expand...
2014. if you look under the shock section, it says 7.25x2.0
http://www.trekbikes.com/us/en/bikes/mountain/singletrack_trail/fuel_ex/fuel_ex_8_26/#

edit:
ive actually measured this myself and can comfirm its 7.25x2.0 (184x50)
 
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'size

'size

Turbo Monkey
May 30, 2007
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blindboxx2334

blindboxx2334

Turbo Monkey
Mar 19, 2013
1,340
101
Wets Coast
'size said:
edited for 29er error.

so...stock travel = ~5.12
shorter shock = ~4.48
longer i2i shock = ~5.12, no geo change if you can get 2 x 3mm offset bushes in there.
Click to expand...
thank you for this, really helps. i definitely do not want to do the shorter stroke method. 130mm of travel is pretty much the lowest i want to run.. the drcv itself is already constantly blowing through travel and bottoming (even with the push spacer installed).

with that said, it appears ive got some hardware measuring to do and see what i can get away with..
 
'size

'size

Turbo Monkey
May 30, 2007
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jonKranked said:
you should know better to do that around here ;)
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no ****. i was really close to just deleting it all out of embarrassment. in my defense i never even think about 29ers so i always forget they are listed...

blindboxx2334 said:
im not sure if the niners are 120, but my bike is 130 rear travel.
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correct, 130mm which is what i based my edited original post on.
 
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blindboxx2334

blindboxx2334

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Mar 19, 2013
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Sorry if that looked like it was intended for you. it was directed at marshalolson who was giving me my leverage ratio with a 120mm bike. (post #5)
 
'size

'size

Turbo Monkey
May 30, 2007
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blindboxx2334 said:
Sorry if that looked like it was intended for you. it was directed at marshalolson who was giving me my leverage ratio with a 120mm bike. (post #5)
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right - i was just clarifying in case you thought i was going based on 120mm travel x 50mm stroke.
 
Dogboy

Dogboy

Turbo Monkey
Apr 12, 2004
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From the Bike Mag article - "Got a proprietary shock mount? Cane Creek makes most mounts. However, if you’re on a DRCV Trek, you’re out of luck." You might want to reach out to Cane Creek for details.
 
blindboxx2334

blindboxx2334

Turbo Monkey
Mar 19, 2013
1,340
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'size said:
right - i was just clarifying in case you thought i was going based on 120mm travel x 50mm stroke.
Click to expand...
cool, thank you for clarifying as well as all the help.
Dogboy said:
From the Bike Mag article - "Got a proprietary shock mount? Cane Creek makes most mounts. However, if you’re on a DRCV Trek, you’re out of luck." You might want to reach out to Cane Creek for details.
Click to expand...
i emailed them earlier and they were not having it, they pretty much told me i was SOL.. theres a thread on the trek section of mtbr where dudes are putting coil foxs on their treks.. i believe they were (older) remedys. although the thread confused the living hell out of me.

http://forums.mtbr.com/trek/diy-trek-remedy-10-11-drcv-coil-conversion-719504.html
 
jonKranked

jonKranked

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M

marshalolson

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May 25, 2006
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Oops, sorry. If it's 130mm, then the 44mm stroke would get you about 115mm of travel.

If it has 8mm top hardware and 6mm lower hardware, for a 5mm total shortening, that would work great I would think. Going to fastenall for some nuts/bolts and such for the rocker plates would be super easy...?
 
blindboxx2334

blindboxx2334

Turbo Monkey
Mar 19, 2013
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just from looking at it the other day and taking off the shock to get the push volume spacers in there, it appears like the top is m8 and the bottom is m6. i can deal with 1mm of i2i difference :)

thanks everyone, glad i got this figured out. the shock isnt horrible, although i think that will change the more i ride it.
 
S

Simmo

Chimp
Jul 5, 2005
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Tmeyer

Tmeyer

Monkey
Mar 26, 2005
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SLC
I'm also interested. I have a 2014 Slash 9 and the push reducer still isn't doing it. Hoping they have something so I don't have to do the MTBR hack job on Ti mounting bolts.
 
Tmeyer

Tmeyer

Monkey
Mar 26, 2005
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Part # is coming up on the QBP site. Says available 7/3. It's the correct i2i but I'm wondering if you can use the same hardware from the DRCV shock?
 
Tmeyer

Tmeyer

Monkey
Mar 26, 2005
585
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Picking up my new shock today! 8.25 x 2.35 Monarch Plus Debonair. Not sure the mounting hardware will be the same but I'll find out. QBP now has them in stock. Ride review after a few days in the Tetons this weekend.
 
blindboxx2334

blindboxx2334

Turbo Monkey
Mar 19, 2013
1,340
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Wets Coast
Simmo said:
Any updates on this? Did you go for CCDB instead of DRCV?
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No, im super poor and still need to buy cranks. I am using a friends set of cranks right now, gotta get my own before i can start on the DB air.. :(

hopefully by the time i get around to it, suspension experts will have had released some sort of kit.. fingers crossed.
 
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