YT Jeffsy 29 Thread

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YT Jeffsy 29 Thread

Author	Message

Tmae

Posted: Jan 25, 2023 at 5:05	Quote
Sure it‘s a lot of travel. For the dhx2 you can add plastic spacers to reduce the travel, others idk. Anyway, 57mm stroke is anyway easier, so you dont need offset bushings

Vertti83

O+

Posted: Jan 25, 2023 at 5:25

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Hmm... With 216x63mm the eye-to-eye length is longer, it pushes linkage "further out", so probably not a problem unless if the linkage hits some hard limit when extended and gives harsh top-out.

If you have 210x55mm shock and you want to increase the travel to 210x57mm, it will mean that eye-to-eye distance on extension stays same, shock and linkage just moves further in when compressed, so there might be danger that rear wheel will hit the seat tube on full bottom out. Check that there is space for that....

MatiasO

O+

Posted: Jan 25, 2023 at 5:43

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Vertti83 wrote:

Sortof...

With 216x63, since the flipchip is in "low" and an offset bushing of 1.5mm is installed, it'll end up being the same as using it in "high" plus 0.5mm extra since the diff between low and high is 4mm.

Said this, the eye to eye ends up being 214.5, but the travel is still 63mm, which could cause even more issues than 57mm, since it's only 2mm more than the original 55.

In the high mode theorically I could use until 210x59, but as Tmae mentioned before, there's even 4mm more of spare room.

Tmae

Posted: Jan 25, 2023 at 7:06

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Correct.

I tested the 216x63 with the 1.5mm offset bushing (flipchip set low) with an x2, removed all the air and „jumped on the bike“, no issues.
-but i just tested the XL frame, for smaller frames might be different.

Anyway i could never ever bottom out the X2 even with 35% sag and no token installed, compression fully open, hucked to flat (90 kg equipped), still about 2-3mm stroke left on the shock.
With the DHX2 now I can‘t see the remainikg stroke, but i never bottomed out.

The Jeffsy is incredibly progressive.

code26

Posted: Feb 1, 2023 at 9:33

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So, I recently got a new bike and have been thinking of turning my Jeffsy back into it's slender stock-self to offer me a bigger difference between the new bike and Jeffsy. One part immediately on the choping block would be the Cane Creek Inline COIL shock. It was rebuild by Cane Creek just a couple months ago. Comes with a 450lb Vault light weight spring. Would anyone be up to trade me an air shock for this coil shock? Preferably a Cane Creek air shock but I will consider anything. Thanks, cheers!

RobK1979

Posted: Feb 16, 2023 at 23:43

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Tmae wrote:

I want to do this upgrade. I allready have a1,5 works angleset. I bought an Izzo for the trails and want to use my jeffsy just for uplifts. The onlty thing i’m worried about, is the frame up for the task? Specially when you bring the fork to 170mm. I’m 93 kg and riding a xl, so not the lightest rider.

Tmae

Posted: Feb 18, 2023 at 6:04

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Basically more suspension is less demanding for the frame then less suspension travel, but you will ride it harder and the angle set will bring more forces on the head tube.
So finally it‘s on your own risk.
Anyway I don‘t think it will lead to any problems, the frames, especially the „mini enduro“ Jeffsy are built quite burly.
I‘m sure there are some heavy hitting riders out there who are more demanding on the frame in stock setting.

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