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  • 26" 36" seat height

    Can someone with 26" and 36" unis measure there seat heights I'm just nervous about getting a 36" and feeling too high , I'm 6.1 and have my seat post way up on my 26" with 125mm cranks . Thanks David
    This is the most stupid thing you have ever purchased. "WIFE"

  • #2
    The seat height above the pedal at the lowest point will be the same for a given rider on any uni (ignoring preferences for different riding styles). You should be able to calculate the height on a 36 from your 26 pedal to seat height, the 36 axle height and the crank length.

    The axle on my 36 with a Nightrider tyre is 45 cm (~ 18 inches, unsurprisingly) from the ground.

    I'm about 177 cm (~5' 10") tall. The seat on my 36 is about 127 cm (~4' 2") from the ground with 137 cranks but I would have it a bit higher if the post was long enough. I have bought another post so I can ride with 125s.

    It seemed high at first but I quickly got used to it. I had ridden a 29 between the 26 and the 36.

    I was free mounting the 36 from my third attempt. It isn't difficult if you use the one-footed-still-stand technique where you balance the reversing force on the low pedal against the pressure on the saddle. I expect those who use a no-weight-on-the-lower-pedal technique would have a much more difficult time jumping up to the height of a 36.
    Last edited by OneTrackMind; 2017-03-28, 10:41 AM.
    Triton 36" + 29" | KH 29" | KH 26" | KH 27.5" Muni | Nimbus eSport Race 24" | Torker LX 24" | Qu-Ax Luxus 20" | Qu-Ax Profi 20" | KH / Impact 19" hybrid

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    • #3
      Find a set of stairs and stand on the second step. Now jump off. Notice that you didn't hurt anything.
      Go for it!
      "I'm a unicyclist. I make my own reality."

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      • #4
        Being up high is part of the point of riding a 36 .
        Unicycling is the fountain of youth.

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        • #5
          OneTrackMind's answer is right on, meaning that you can almost exactly extrapolate from the 26" to the 36" as your legs stay the same in relation to the hub and cranks (calculating for different crank lenght of course).

          I calculated my effective "height" when riding the 36er with 100mm cranks and I can't remember exactly, but I think it was 217cm which is 7'2" (I'm 6'1" or 185cm). That is really high, meaning I sometimes have to look at the maximum height for underpasses and parking garages!

          So to your original concern about being really high: compared to a 26" it is really high, but you get used to it. When I bought my 36 I had been primarily riding 24" and 20" and had only tried a 29" once for about 10 minutes. So it did feel really high but you get used to it.

          The crank length makes a huge difference but starting out on the 36" I would recommend at least 150mm cranks or longer (I started with 165mm cranks, even tried 170s when I started off-road but quickly went to 150s and then gradually shorter). Longer cranks makes riding easier but really makes mounting easier (with shorter cranks you really have to jump or lunge up to mount). But at 6'1" with longer cranks mounting is in my opinion not so initimidating (for someone shorter that's probably high though). I was free mounting with some success with 165mm cranks within a week I think.

          For me riding with 150s did not feel intimidatingly high, but the first time I had 125s on it felt like the seat was _SO_ high (now after 3 years I free-mount over 60% with 114s, either static, jump or rolling mount and well over 90% with 150s; with 100s my mounting is unfortunately more like 40-50%).

          Again it takes getting used to and you really do sit up high. After riding the 36, when I get on a bike I feel like a midget, as I'm used to looking down on EVERYONE (at over 7'). When I was first riding with shorter cranks I one time had a near-collision with a bike coming the other direction and swerved to the right and ended up dismounting right on top of a parked bicycle. I literally flew over the back wheel and seat and landed straddling the top tube (luckily it was a Dutch cruiser style bike with low top tube so I didn't actually hit anything).

          I say go for it. It's a lot of fun :-) and sitting up high feels really cool (of course you just have to accept that everyone stares and I actually think it's safer in traffic as car both see you, notice you and give you more space). When I used to ride my 36 every day it felt really weird riding the bike as nobody was staring at me. It felt like the Twilight Zone as suddenly everyone was acting weird, meaning no craning necks and staring and pointing. As strange as it sound, I actually had to get used to that too.
          36" Nimbus Oracle, VCX 100/125/150, 200mm disc
          29+ KH, Maxxis DHR II 29x3, 127/150 Spirits
          Schlumpf (KH29) Duro Crux 29x3.25 137/117 Spirits
          26" Nimbus, Maxxis DHR IIx2.8, 117/137 Sprt
          19" Trials Impact Athmos
          20" Qu-Ax Profi Freestyle, 89mm VCX

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          • #6
            Lots of good advice above. Here's a simpler take: Going from 26" diameter wheel to 36" diameter wheel, all other things being equal, you go up 5".

            It will seem like more, because the wheel is big and heavy. But like they said above, that's what you wanted! You're going to like it. After a while, 36" will seem too small...
            John Foss
            www.unicycling.com

            "Who is going to argue with a mom who can ride a unicycle?" -- Forums member "HiMo"

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            • #7
              My seat height on my 26" is 1.15m so I would be adout 15cm higher , I think it would be a fair while before it feels small I have only been riding for about 5 months my 26 feels tall . Thanks for the advice now talk the minister of finance into a 36.
              This is the most stupid thing you have ever purchased. "WIFE"

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              • #8
                Just start with 150's, since you ride your 26er with 125 you'll only have a 4" seat height difference to deal with instead of 5" if you take 125, and it will be easier to manage.

                A lot of people prefer 125 (or shorter) over the 150 cause they think long cranks make the 36er slow.
                That's not my experience, I am much faster with 150's than with 125, my 36er is easier to accelerate, to slow down, to handle, I can ride everywhere with it, I can do muni with it or ride with or keep up with my girlfriend on her mountain bike.


                Now I have two 36ers: one fixed 36x145 and one geared 36x150 and I don't feel like riding my smaller wheels anymore, I'm hooked to the 36" size.
                Before I put some 150's on it, my 36er was collecting dust, now it's just a joy machine.
                The height is part of the trip.

                I also strongly recommend to put a handlebar on it.
                Last edited by UniDreamerFR; 2017-03-29, 09:43 AM.
                - Geared kh36 + Nightrider Lite + Kh Tbar + HS33
                - Qu-ax 36" + nightrider +Q-handle+ cable rim brake
                - kh 29" + knard 29x3+ kh Tbar + HS33
                - Qu-ax trial 19"
                -24"&26" wheels and forks and spare stuffs.

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                • #9
                  By the way, I 'm 5'9", so your are 4" taller than me, which gives about 2" longer legs in theory, but your 26er's seat height is about the same as my g36 !

                  Even if you use 125mm cranks on your 26er while I use 150's on my g36 your seat sounds pretty high to me.

                  I recognize I have rather short legs and I set my saddle's height rather in the low range for several reasons, but are you sure you're not setting your 26er's seat to high?

                  I do understand your fear then.
                  - Geared kh36 + Nightrider Lite + Kh Tbar + HS33
                  - Qu-ax 36" + nightrider +Q-handle+ cable rim brake
                  - kh 29" + knard 29x3+ kh Tbar + HS33
                  - Qu-ax trial 19"
                  -24"&26" wheels and forks and spare stuffs.

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                  • #10
                    Just measured again and it's 1.15 m I must have giraffe legs my std seat post is just above the max height mark.
                    This is the most stupid thing you have ever purchased. "WIFE"

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                    • #11
                      Originally posted by Thumper uni View Post
                      Can someone with 26" and 36" unis measure there seat heights I'm just nervous about getting a 36" and feeling too high
                      Just go for it! As a the rider of a 26" for two years, I remember that being a momentarily intimidating height increase from learning on a 20", but when I finally got a chance to get up on a borrowed 36" this past weekend, it felt simply great. That bigger heavier wheel rides like a dream, and getting off of it worked without thought. Really the only thing that made me nervous was a first encounter with pedal pins - got awkwardly stuck on one while attempting a freemount before finally giving it enough commitment on the third try.

                      Originally posted by John Foss
                      After a while, 36" will seem too small...
                      Indeed. There happened to be a 43" wheel present as well, and I figured, "in for a penny, in for a... farthing?" and with the aid of a lamp post... But hopped off fairly quickly, not from the height but from the odd behavior of the narrow solid tire. My initial reaction was to think I needed real experience on a 36" first, though in retrospect that rides like a mid-size unicycle only better, while narrow tires may be a skill of their own?
                      Last edited by Engineer on a Unicycle; 2017-04-04, 04:35 AM.
                      Nimbus 36 & 26

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                      • #12
                        Originally posted by Engineer on a Unicycle View Post
                        when I finally got a chance to get up on a borrowed 36" this past weekend, it felt simply great. That bigger heavier wheel rides like a dream, and getting off of it worked without thought.
                        Yes. Funny thing. I got my 36 recently and on the first ride I just started rear dismounting with barely a thought. I had never been able to rear dismounted any uni in three years of riding 20s to 29s.

                        I don't know if it was the slow motion aspect of the 36, intimidation by the handlebar, the flatter saddle, the lower seat height (relative to pedals) than I usually ride or all the above but I felt compelled to do it behind as I slowed.
                        Triton 36" + 29" | KH 29" | KH 26" | KH 27.5" Muni | Nimbus eSport Race 24" | Torker LX 24" | Qu-Ax Luxus 20" | Qu-Ax Profi 20" | KH / Impact 19" hybrid

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                        • #13
                          Originally posted by OneTrackMind View Post
                          I don't know if it was the slow motion aspect of the 36, intimidation by the handlebar, the flatter saddle, the lower seat height (relative to pedals) than I usually ride or all the above but I felt compelled to do it behind as I slowed.
                          Rear dismounting makes kinesthetic sense, you just push down to let the rising pedal lift you backwards off the seat and step to the ground with the other foot, catching the saddle handle. It's as natural as getting off a ladder.

                          But it is mentally quite odd if you try to think it through, especially as it is all happening out of sight, and the prime opportunity only comes once or twice per revolution.

                          Everything happening more slowly on the bigger wheel could be why it worked... especially if done without thinking about it.
                          Nimbus 36 & 26

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                          • #14
                            Originally posted by Engineer on a Unicycle View Post
                            Rear dismounting makes kinesthetic sense, you just push down to let the rising pedal lift you backwards off the seat and step to the ground with the other foot, catching the saddle handle. It's as natural as getting off a ladder.
                            Yes, that makes sense. However until the 36, all my unis have had lightweight tyres so not much momentum to lift me up.

                            It has been raining (and flooding) here for weeks, so I have not ridden any unis lately. Now that I understand the process, I am looking forward to trying a rear dismount on the others.
                            Triton 36" + 29" | KH 29" | KH 26" | KH 27.5" Muni | Nimbus eSport Race 24" | Torker LX 24" | Qu-Ax Luxus 20" | Qu-Ax Profi 20" | KH / Impact 19" hybrid

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                            • #15
                              So one big lesson to report: Don't try to ride a 36er with the seat too low!!!

                              I bought a lightly used one from a friend locally, who is a bit shorter. Did some math and concluded that the 200mm post on it would just barely work. Only on the subway ride to the river path discovered it was actually a 125mm post and already as high as it could go. But hey, when you've planned to ride a unicycle, you ride the unicycle you brought.

                              Or at least try to...

                              Riding too short a seat meant I was lifting out of it constantly, and that gave me no control over the huge wheel - I had one attempt launching from a fence where I managed 15 feet.

                              If I hadn't tried a different 36er the previous weekend and enjoyed it, I might well have given up thought I wasn't ready for a big wheel.

                              But today after sacrificing the post from my 26er to careful measurement and the hacksaw, I took it back out... and rode 23 miles.

                              Both my 26 and 36 have 125mm cranks, so I just measured from the axle to the top of the seatpost on the 26 and reproduced that on the 36. I started with it about a half inch lower but quickly decided that wasn't quite right, and raised it to what is likely all but exactly what I had on the 26.

                              Of course now I can't free mount it, but one problem at a time...
                              Last edited by Engineer on a Unicycle; 2017-04-10, 03:50 AM.
                              Nimbus 36 & 26

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