In your video you said the Nightfox will be able to fit any bigger wheels that eventually come out. How big are we talking? 
Did you measure the maximum extended size?
Haven’t measured it yet, but at its highest setting, there’s a good 8" clearance between the top of he tire and crown. I think a 50" wheel set would fit easily with room to spare.
I wonder if the Penny Farthing hubs will fit… 
fraid not, the nightfox is a 125mm frame and the pennies are 155. Until someone can get their hands on a 36 hole penny rim the rise of the uberfoxes will have to wait.
Schlumpf 50" uberfox. Let’s show those bikers who’s faster 
Schlumpf 50" uberfox.
And a parachute…
Famous last words!
I measured the clearance at 9.5" at it’s highest setting. If we deduct 1/2" to allow for the clearance of a larger wheel, would that equate to a maximum wheel size of 54"?
So in the picture you have a 36" wheel, yes? If so, why is there so much space between the frame and tire? Is it spaces out like that for demonstration purposes, or do you actually ride it that way?
There’s no seatpost in this design, so it allows the seat to be lowered a good 3" or more lower then a traditional 36" frame design. This allows a shorter rider that may not of been able to ride a traditional 36" the ability to ride one. I’m not sure what the benefits would be for a taller rider though, other then the ability to put a larger wheel in the frame.
There are some excellent added benefits I have found for this particular design. It’s true that the main objective was to make it possible for shorter people to ride a 36er, without the need to cut down the seat tube of a traditional 36er. But I have found other nice benefits to this design, including more storage space, and the ability to let shorter riders try it, including my unicycle student Anakin, who is under 5’ tall. And of course, the ability of the frame to allow for a much larger wheel, when/if they ever become available.
Id still like to see this ‘more storage space’ in action.
You will when I do my upcoming century on it! For example, this storage rack can allow stuff to pass through the frame opening, giving you almost as much storage space as using two racks on a traditional frame. Even without the rack you could still carry tools, water bottle, etc., while still having room in other places to carry things, such at the touring bar, which is where I’ll have my camera mounted.
I got mine last week.
Like Terry, I am not exactly short.
I was hoping to build a 54" wheel for it but my my figuring I wouldn’t be able to fit any more than a 52" wheel in there. Custom lower legs are not out of the question.
I have only ridden mine a couple of km so far, just to test it out before I left, but it felt fine. I could make my legs hit the crown right below the saddle but I don’t think it will be an issue. Other than that it felt like a normal 36er. They got the seat angle pretty darn good as far as I am concerned.
“One size fits all” might be a slight misnomer. I have the frame nearly maxed out for height. I don’t think I could go with cranks shorter than 125 unless I raised the seat.
EDIT: I am a normally proportioned guy, about 5’11. I wouldn’t recommend this unicycle as currently sold for anyone 6’ and over.
Hmm, so while it’s a 36er that can fit the shorter people, it can’t fit the taller too well? Interesting. I’m only 5’10 but I’m about 99% leg, guess the Nightfox wouldn’t fit me Shame, I wanted a 52" Uberfox!
For the taller or longer legged riders we can always add some spacers under the saddle to get a proper ride height. Building new lower legs wouldn’t be terribly hard either, as the tubes used are simple strait and round.
That being said I can’t imagine why a taller rider would choose a Nightfox over a conventional 36er unless they were the crafty type with some sort of project in mind, whether it be a crafty through the frame storage option or a bigger wheel etc.
It would love to see someone modify a penny farthing wheel for this frame. It wouldn’t be any harder “shrinking” a Penny hub than it was for people to widen unicycle hubs in the early days of 36ers.
Personally I think I am going to try to build a 48" wheel for now, and if it is good I might go the whole nine yards and do the modifications necessary to make a 54" wheel work. Wish me luck!
To add height you could just add a piece of hollow tube on each side, the same diameter as the lower tube, and connect them with “couplers”.
Its clearly looking for some bits from a hacked up humi rex to turn it into a demi-penguin. put equal sized sprockets on and go for a 70" wheelset…
What’s the length and diameter of the “legs”? I wonder if a multi-wheel extension piece would fit if you cut off the bearing caps on one side. That would also give you a completely steel frame.
I am heading back north at the end of the week. I have already measured max and min extension but left the numbers up there. I recall rough numbers to be max 52" wheel min ‘less than 36" wheel’.
Interestingly at it’s lowest setting (with a smaller wheel) you reach the elliptical part of the leg before you bottom out in the frame. The lower legs could have been about 1" longer without changing the minimum height. It was probably done that way to prevent jamming.
I will check out the diameter of the tubes when I get back up there and report back with what info I have.