B1 stealth reverb sag after rebuild....- Mtbr.com
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  1. #1
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    B1 stealth reverb sag after rebuild....

    Have succesfully rebuilt A1 external and stealths several times , but my b1 stealth is giving us troubles. 9 month old , lube and new keys and oil and all went smooth. Post was rock solid but only untill we lowered it for the first time. It immediately developed aprox 5mm of sag.It does not feel like ďairĒ sag, post can be depressed aprox 5mm and then a hard stop. What did we do wrong ?

  2. #2
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    I could have written your post myself. Same past experience and current issue. Did you find the fix for the 5mm sag?

  3. #3
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    No , have not really tried though. But guess its time for another rebuild/internal lube job soon. To tell the truth ; i dont really notice it anymore when on the bike. Will update when i have taken it apart again.

  4. #4
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    Ya itís really not that bad. But you know how it is. Looking at these new longer droppers and thinking I got to have one. I donít, especially cuz I can add 10mm of usable drop if I get this slop out of my reverb.

    Did some more research. Apparently the ifp seal is good in one direction and bad in the other. Specifically lifting the bike from the seat with the post down allows air past the seal and into the oil. So we just need to bleed the ifp to get that trapped air out. I just did the 200 hr service, hoping that would fix it. It didnít. So I have an ifp height tool, soft jaw shaft clamps, and some reverb fluid on the way. Iíll let you know if I can get the slop off the top.

  5. #5
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    Is the B1 the version that has Gold lettering near the seat?

  6. #6
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    Yea

  7. #7
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    The B1 rebuild process is different to the A1 and A2 instructions so make sure you follow the right guide. I've rebuilt a fair few and managed to get them rock solid so it can be done.

    Sent from my LG-H870 using Tapatalk

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