I doubt you would notice any break-in time with the Freeride, because the foam is so thick and cushy. It’s more something you might notice with slimmer firm foam.
@kris what angle do you use when ridding muni?
Can you post a picture of this angle.
Can do, but I think it’s easier to count the pivotal “ridges”.
If you look at the back of the seatpost, I have 1 pivotal ridge visible. This is the 2nd to highest saddle angle option (e.g. the 2nd to steepest angle).
This angle shifts the weight back onto my sit bones and eliminates pressure up front.
Kris
One other point re having slight “give” in the saddle.
Having the possibility of slight flex on impact is important as well to avoid breakages of other components in a fall. A long handle with a totally rigid system imparts major impact force on the rest of the system if it strikes the ground, which is more likely to lead to brittle failure (e.g. failure of the touring handle, seatpost or frame). Fibre-injected nylon is great for that because the fibre percentage can be used to “tune” the stiffness, and because the material has high toughness (e.g. resistance to repeated shocks).
Re distance of the “nose” of the saddle in front of the seatpost. The nose distance on the Zero is the minimum required to fit all kinds of brake levers when installed directly under the handle. A shorter distance would be incompatible with some levers, especially those with the barrel extending straight back from the lever. The Zero’s seatpost position is also the same as it is for a bike, and moving it forward would have prevented the saddle from being as narrow through the mid-section.
Firmness note
Its worth mentioning that when I was lucky enough to ride our sports greatest hero’s muni, with the zero saddle it was probably already ridden over 200 miles on it. I didnt find it uncomfortable. I will say however a few buddies here in dfw just received theirs and I will say they felt waaay firmer.
Give it a chance and break it in the way you break in a new couch, or a pair of shoes. Trust me Kris knows what he is doing. I for one just got my order in and am thrilled.
Compulsion Cycles has 'em at the moment.
Thanks, Joe! I’m picking up mine tomorrow.
Firmness note
Its worth mentioning that when I was lucky enough to ride our sports greatest hero’s muni, with the zero saddle it was probably already ridden over 200 miles on it. I didnt find it uncomfortable. I will say however a few buddies here in dfw just received theirs and I will say they felt waaay firmer.
Give it a chance and break it in the way you break in a new couch, or a pair of shoes. Trust me Kris knows what he is doing. I for one just got my order in and am thrilled.
Thanks for the tip! I just ordered mine!
I totally agree with Mutaito in all he said.
I rode 60km on my KH36 with Zero saddle today and I must say it was very uncomfortable. The foam is very thick and hard. I have the biggest soreness I ever had on unicycle. I´m going to remove foam from Zero and I´ll put foam from Fusion street saddle under cover from Zero. I don’t recommended this saddle for long distance on asphalt roads. The shape of the saddle is great but I feel too much flex on the base when using T-bar. Maybe for muni it´s better this kind of foam but not for distance riding. Please don´t compare unicycle and b*cycle saddles because there are different requirements on each one. I tried various angles and the best was O pivotal ridges visible at the back. That´s my opinion on Zero saddle.
Thank you Kris for all what you are doing for this great sport.
PS: Sorry for mistakes I don´t speak English very well.
Ordered, thanks!
To share my own experience with an ultra low curve saddle:
1st ride (on a Flatfish): totally unused to it. Uncomfortable, and on a ride much less than 60 km.
After a few rides: now I can see the point, but still getting used to the different muscles, and sitting pressure on the sit bones.
After perhaps a dozen rides: well accustomed to it - the saddle is feeling like the most comfortable saddle I have used.
After hundreds of rides: absolutely the most comfortable, anything else just feels weird.
In my view, unicycle saddles have every design requirement of a bike saddle, plus more.
They are different, but comparison for design reasons is important. In summary:
- Curved unicycle saddles do have some force directed towards the back, but mostly support the rider through the entire saddle curve including the front.
- Bike saddles almost entirely direct sitting pressure back onto the sit bones, with almost no pressure up front.
Using saddle angle and some subtleties of foam and frame shape, the Zero is closest to #2, above. This is an important distinction and it will feel different for sure, before the major advantages become obvious.
Turns out that Boin-Boin provided some insight on the foam density on the French forum:
The KH Zero foam seems harder than the KH Freeride but softer that the Impact Naomi.
(Thanks Boin-Boin 
)
FWIW I have several saddles and I can give an exact opinion about foam density.
Here they are, from softer to firmer:
[LIST=1]
Naomi saddles are not all the same, I have 4 of them and the foam on some (I’m going to say 50/50) is sometimes pretty hard, sometimes softer. For what I have seen, the latest I purchased are the softest among my Naomi’s.
However by now the Fusion Zero is the one with the firmer foam; which is fact is a good thing IMHO, I love hard saddles all the way
I’m supposing here, but the saddle soreness I experienced in my first ride was not due to density of flatness, but to the internal cutout being not enough deep (and wide?).
One of the saddle I love most is the KH Fusion Slim, which has a firm foam, slim shape and adeguate longitudinal cutout (deeper).
The only thing missing to be perfect is a flatter shape like the Fusion Zero, which IMHO would have gained from a similar longitudinal cutout 
Don’t get me wrong here, I’m not saying that the saddle is not worth your money, Kris has made a stellar work here, and since saddles are the most personal thing you could tweak in a Uni, there no really “good” or “bad”.
For example many rider find Nimbus Gel to be a comfy saddle; I personally hate them, saddle soreness whithin 5 minutes of riding. But, probably, it’s just me
Somebody talk about the Quax Air; even if you don’t see many around, is not a bad saddle, I know peoples who loves them and find they are the most comfy saddles.
The cutout Quax realized is very good in my opinion, the real problem is, again, shape. Quax went (why?!?!) with the old-style curved-shape (even if the made a new base for it) and that’s why they are not popular; too much front pressure, which you won’t find in the Zero (good news).
@Kris: I know the argument about saddle cutout is really wide and complex, and I know that many high-end bike saddles now comes without it.
The rider on a bike is leaned forward, and put a great amount of its weight on wrists, so (I think) he can take less advantage from a saddle cutout.
But we are all the time on the saddle, in a very straight position and we put most of our weight on the saddle, expecially on road riding.
That’s why I think that we need that cutout more than b*kers..
Hello Mutaito, I noticed in your previous post that you had tilted the Zero saddle back only one notch. On my first ride I did the same. But since then I’ve tilted it back three notches and it made a huge difference.
Rotating the saddle backwards will slide your sit bones further back on the saddle where the comfort groove is deeper and wider. You wont really benefit from the groove until you tilt the Zero back further. Tilting the saddle back will also increase the upward angle of your T bar.
I have my T bar set very close to the hand grip with my handle bars almost at the same angle as the saddle.
The Zero is a very precise saddle so I’m adapting my set up to suit. You cant just climb on it and expect your old set up to work as it did before on another different saddle.
Over my past few cycles I’ve made huge improvements by just making small adjustments to my set up.
Experiment more, making adjustments each time you ride and watch your uni perform like never before.
@unibokk: very good points.
There is a huge difference in comfort depending on saddle angle. Every rider will be different but most riders will likely prefer the saddle tilted back to some degree.
Bike riders have handle bars to push their weight backwards on the saddle.
Even with a touring handle, unicycle riders mostly just have gravity. But by adjusting saddle angle to suit, and with some time to adapt, we can achieve the same effect.
I know 2 kinds of impact (current name of Addict) saddles : Naomi (or team CDK with a specific black cover) which is firm and Woom model from the famous french basket team which is softer and deeper; my son has both and the difference is obvious
Suzue bearing spacing
Hey folks, I picked up an old unicycle I had with a broken frame and I’m looking to get one of the new cool looking Eclipse frames.
Wondering if my suzue hub will fit in that.
First ride impressions
Okay I realize my last few posts have sounded like total fanboyism. So I digress let me calm down and write a real review.
I went on a 5 mile ride through the street with this saddle with the rear angled all the way down.
Pros:
- Q-factor felt more natural
- Comfort of the boys, (Happy to no longer be jeopardize my future kids)
- Looks sleek and different
- Easy to install
- Once riding technique adjusted I found it to be very comfortable
Cons:
- Seems to need bike shorts with padding at least in the beginning to get used to the firmness of the saddle.
- I noticed that even on a small drop I had control issues with the saddle (This may be due to the reduced size in which case a simple technique change is required)
I will post more after first muni ride.
Ok i tried the saddle on my 29 inch light weight muni and did a 2 hour ride.
The control problems are almost gone.
I think it is because speed is lower with this unicycle no need for me to stay in the saddle al the time.
The angle of my seat is no pivotal ridge visible.
After 1,5 hour i starting getting a sore butt still completed the ride.
When the foam start to break in i think am going to try it again on my 36 inch.
@zakakazak
Real review based on 5 mile ride? 