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  1. #1
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    Dropper post for cold temperature?

    I have a Reverb on my FS bike and I'm thinking or buying another one for my HT, which I mainly use as an early winter bike. I will ride at temperatures down to -10*C or so. I found out last year that the Reverb is useless for these temperatures and I read that the KS LEV isn't much better.

    I need a 27.2mm diameter and I'm thinking that the GravityDropper should work well for that application. The Thomson should be good also (when available), as it seems they engineered it to be usable at very cold temperatures.

    Are there other good options I should consider?

    Any good points for or against the GD? I read that the lever is awkward... How will I like it compared to the Reverb? Is the mechanical operation still a good option compared to the newest offerings?

    Any Thomson users? I own several Thomson products and I am a fan, but the dropper is fairly new and I didn't see much feedback about it.

    Thanks!

  2. #2
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    I'd go mechanical. Every hydraulic post I've had (reverb, KS, and Joplin) has had issues in cold weather. I think I'm going to put on a regular straight post this winter. ..... If I can stand it. If not I'll be shopping for an old GD.
    I will cause thee to ride upon the high places of the earth...
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  3. #3
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    Quote Originally Posted by KRob View Post
    If not I'll be shopping for an old GD.
    PM me if your interested in mine
    breezy shade

  4. #4
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    '14 rocky mountain altitude, rally edition
    '11 transition blindside, 650b converted

  5. #5
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    I rode one of the KS Lev mechanical posts in the spring in Colorado with snow on the ground routinely and had zero issues. Not sure if it's as cold as Quebec, but there was no issue at all down to -4 C or so.

  6. #6
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    I've used my Specialized Commandpost in temps down to about 25* F, and it worked just fine.
    '11 Specialized Enduro Expert for the trails
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  7. #7
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    The Command Post supposidly has a "cold weather tune" DIY option which from what I understand just involves using a lighter viscosity grease internally. Google it.

  8. #8
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    Quote Originally Posted by Tystevens View Post
    I've used my Specialized Commandpost in temps down to about 25* F, and it worked just fine.
    My buddy's new one started locking up around 5c last year.

  9. #9
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    Thanks for the feedback!

    So it seems nobody has anything bad to say about the GD...I guess that's good! The Rase seems heavy at >600g, and my lbs doesn't carry Specialized products, so that's making the Command a bit less interesting.

    Another question on the GD: I have a front derailleur on the HT...is it possible to use a RH remote on the left, along with a SRAM front shifter and Juicy brake (I have a Matchmaker, if that matters)? I have this setup with my Reverb (RH remote on the left), but I don't have a front derailleur on that bike, so it fits quite nicely.

    Thanks!

  10. #10
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    I have a GD Turbo LP and it works flawless thus far, granted only 3 months or so of use. Regarding the lever - I definitely see where it can be improved but it's not THAT bad...it works every time that I press it. I got a right hand lever with the intention of running it upside down on the left (in the place of my front shifter eventually). Currently there is no way that I could cram the GD lever in there on the left side with a FD shifter. I don't have matchmakers but I just don't see how you could fit the GD lever under there with the shift levers. Hopefully someone can chime in with real world experience about that though.

  11. #11
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    Just found that:



    I wonder if the actuation is still good with the lever in this position. Maybe you actuate the lever downward with the side of the thumb. Is there a lot of resistence with the GD lever?

  12. #12
    Braugh Bro.
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    You can get Rh or Lh levers for GD posts.
    I've had one for about 8 months or so and have had zero problems. I have a LH lever, and am using the 5inch dual position one.

  13. #13
    Keep on Rockin...
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    GD is as bombproof as any dropper gets.

    The Spec Blacklite is my favorite but gets sticky on the rise if too cold.

    Never had a Reverb.

  14. #14
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    My KS i950 was great this past winter in 10 degree weather. No issues once I started moving, either.

  15. #15
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    You can buy a left sided switch arm and body from Gravity Dropper for $18. That is all you need to convert it from right to left.
    They are excellent posts and will work in any conditions. You can rebuild it yourself in 30 minutes.

  16. #16
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    For your information, I have the same problem with my Reverb and I plan to change the oil for an other one with a smaller viscosity. For nwo I just know that the oil used now is a 2.5WT.

    I need to find a silicon oil with a neutral pH. It's just a matter of time before I solve the problem, I let you know.

  17. #17
    EDR
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    My KSi950r gets sticky in cold weather. I ride in Phoenix so by 'cold' weather I mean anything under 60 degrees, especially if it's rainy.

    Once started Burro Down in Moab at +11k feet and ~45 degrees and rainy. My adjustable post was useless up there but by the time we were down in elevation and the temp was up into the 80's and dry it worked fine.

  18. #18
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    60F ??? You're kidding?!?!? sunday it was 50F and we ride until the ski begins for real... so... 27-28F

    The pleasure of being canadian....

  19. #19
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    Breaking news!!! I just bled my dropper with stock oil and it fixed the problem.

    At the bikeshop, I heard that I wasn't the first to have this problem. Try it and keep me posted

  20. #20
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    I have a reverb and KS Lev, and both have worked very well in temperatures around 28 F.
    Originally posted by bucksaw87
    I still fail to see how mustaches, fixies, and PBR are ironic.

  21. #21
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    Seems now that it's low 30s, my KS Lev won't stay locked at the top position. Real pain in the butt.
    Uzzi

  22. #22
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    Quote Originally Posted by orastreet View Post
    Seems now that it's low 30s, my KS Lev won't stay locked at the top position. Real pain in the butt.
    have you been to the bikeshop? if not, stop whinning and GO!

  23. #23
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    My KS eTen worked well today 23-28degree's during our ride. It did get a bit slower but is did work well still.
    I like to fart when I'm in front of you on a climb

  24. #24
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    I have a GD, the nice thing is that is has a coil spring instead of compressed air. Air pressure drops as temps go down, so the air actuated posts(pretty much every other one out there) lose power for the rise, then the seals get stiff, the oil gets stiff and you are left with not much to go on.
    My command post was lacking in return rate around 10 F /-15c or so.
    The GD has two problems in cold weather.
    1 the boot gets stiff
    2 the grease internally gets more viscous, so it's harder to lock in the middle position, if you have that option.

    Last night at -5F/-20c those were the only issues.

    The lever is ok, not great but not horrible at all. Nice and long too, so easy to feel with thick gloves.

  25. #25
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    My Lev worked but its movements were very sluggish during this weekends ride (-8c)

    It did not have any problems with locking out though.

  26. #26
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    Hardly qualifies as cold, but I rode in 35F weather and my Thomson dropped and raised at the exact same speed it did when it was 110F.
    Employed by Pivot Cycles - www.pivotcycles.com

  27. #27
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    My KS eTen slowed down some with the cold but it hasnt been a problem. It just takes a tiny bit longer to go up.
    I like to fart when I'm in front of you on a climb

  28. #28
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    Quote Originally Posted by 94krawler View Post
    My KS eTen slowed down some with the cold but it hasnt been a problem. It just takes a tiny bit longer to go up.
    My eTen would not lock out at -5 last weekend. I rode up Burnaby mountain to SFU without any issues but when i dropped the seat before going down, it would not lock. My buddy has the new Giant dropper and he had the same problem. I ended up going to the university washroom and ran hot water on the post to lock the post.

    I'm going to swap out the dropper to a regular post on cold rides.

  29. #29
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    -5F or -5C I've had mine out in 10F once and it still locked fine.
    I like to fart when I'm in front of you on a climb

  30. #30
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    Quote Originally Posted by 94krawler View Post
    -5F or -5C I've had mine out in 10F once and it still locked fine.
    -5.7 Celsius according to my Garmin.

    30 minute drive to the mountain and another 30 minutes by the time we got ready and rode to the top.

    Previous week was -3 Celsius and i had no issues.

  31. #31
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    Wierd, I have deffinitly ridden mine several times in weather that cold or colder. That converts to about 23F.
    I like to fart when I'm in front of you on a climb

  32. #32
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    Late to the party, but I would like to share my experience with the LEV.

    Mine has worked great down to 15 degrees F. And even then, the problem was with the cables and housing. It would continue to work under that temp if you pull on the housing at the post to actuate it. I have not experimented with different cables, housing, or housing lube. Im sure there is a particular cocktail that would be more freeze-proof than the next.

    Anyway, a stuck dropper post isnt #1 on the list of priorities when your water bottles freeze up!
    Raised in a Chicken-Coop by Chickens

  33. #33
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    My reverb starts to get slooow below 35 F or so, and it locks up entirely by 28 F. It goes down fine, it's returning back up that's affected. Works fine again once the temp rises.

  34. #34
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    We are going out tonight and its expected to be about 6F. I rode my new LEV a few times in the low 20's already with no issue, see how it does tonight.
    I like to fart when I'm in front of you on a climb

  35. #35
    I Tried Them ALL... Moderator
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    A quality dropper should have zero issues in cold. Check your seat clamp tension and/or air spring pressure before judging....
    "The ONLY person who needs to race.....is the entrant"

  36. #36
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    I have been having issues lately with my Gravity Dropper.
    It seems like the cable might be stuck, or the internal mechanism.
    On one ride it wouldn't lock onto any position, up or down, this was at about 15f/-10C.
    A while later, it wouldn't unlock from the lower position(in which it had been stored). This was at -5F/-20C.
    I've never had these issues before, including all of last winter with temps down to-30.
    This started happening after a very wet beach ride, so my theory is that water go in the post and freezes things together when it's cold.
    I'll have to pull it apart and see if a clean and rebuild solves the issues.

    Btw, I'd say that a non functioning dropper post is much worse than frozen water bottles. I can ride just fine without drinking(for a while), but it's real hard to ride with a saddle way down or compressing up and down.

  37. #37
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    Quote Originally Posted by Tjaard View Post
    I have been having issues lately with my Gravity Dropper.
    It seems like the cable might be stuck, or the internal mechanism.
    On one ride it wouldn't lock onto any position, up or down, this was at about 15f/-10C.
    A while later, it wouldn't unlock from the lower position(in which it had been stored). This was at -5F/-20C.
    I've never had these issues before, including all of last winter with temps down to-30.
    This started happening after a very wet beach ride, so my theory is that water go in the post and freezes things together when it's cold.
    I'll have to pull it apart and see if a clean and rebuild solves the issues.

    Btw, I'd say that a non functioning dropper post is much worse than frozen water bottles. I can ride just fine without drinking(for a while), but it's real hard to ride with a saddle way down or compressing up and down.
    Did you try tightening or loosening the the top cap?. It could also be that water washed out too much grease, may need some new grease.

  38. #38
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    what do you mean with the topcap?

  39. #39
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    Quote Originally Posted by Tjaard View Post
    what do you mean with the topcap?
    See part #52 at the GD link below. It screws on to the top of the dropper shaft, you will find it if you lift up the bottom of the boot from the post. Others can explain why, but loosening/tightening this cap, it acrews on, affects how the post operates. It is possible that it needs some tweaking in really cold weather.

    When I did my service of my GD this was the last thing to tweak, just little increments loosening or tightening affected whether the post gets full extension or stays extended.

    About the coldes I have used my GD is 29-30 degrees. First opertion was a little sluggish, but after that it worked no problem.

  40. #40
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  41. #41
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    Ks LEV worked fine all night. Say in the back of my truck for awhile at 16F and when we got back from our ride it was 9F. ITs a bit slower cause the oil thickened up but it worked fine.
    I like to fart when I'm in front of you on a climb

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