Sketch of David Stone's Ultimate Unicycle is up

David Stone e-mailed me a sketch of his Ultimate Unicycle design that he
proposed a few days ago. I put it up on
http://www.xs4all.nl/~klaasbil/ultimate_uni.htm.

Klaas Bil
--
"To trigger/fool/saturate/overload Echelon, the following has been picked
automagically from a database:" "key, Sayeret Tzanhanim, FAS"

[unicyclekid]

It doesn't seem like that unicycle would work
Maybe a Impossible/ B.C. Unicycle could be made, though it would be hard to function, but could it be considered a planar uni?

Klaas Bil wrote:
[color=blue]>[/color]
[color=blue]> David Stone e-mailed me a sketch of his Ultimate Unicycle design that he[/color]
[color=blue]> proposed a few days ago. I put it up on[/color]
[color=blue]> http://www.xs4all.nl/~klaasbil/ultimate_uni.htm.[/color]

I still don't git it. How is this...."peddled???" I'm still imagining your
'bum bones' doin' the work. :-7

I really can't understand from this sketch. Sorry David.

If there is someone with "different" sketching skills here who DOES get
it, maybe they can create another drawing.

Christopher
--
"Be Bold and mighty forces will come to your aid." -Basil King (Anyone who
can give me more info on THIS Basil King please email
me.)

My small but growing site: http://home.earthlink.net/~crgrove/index.htm

If you are in the Ann Arbor/Ypsilanti, MI area check out my resume and if
you know of a company that fits me please let me know... Thanks!

c_r_grove@yahoo.com writes:
[color=blue]>Klaas Bil wrote:[/color]
[color=blue]>>[/color]
[color=blue]>> David Stone e-mailed me a sketch of his Ultimate Unicycle design that[/color]
[color=blue]>> he proposed a few days ago. I put it up on[/color]
[color=blue]>> http://www.xs4all.nl/~klaasbil/ultimate_uni.htm.[/color]
[color=blue]>[/color]
[color=blue]>[/color]
[color=blue]>I still don't git it. How is this...."peddled???" I'm still imagining[/color]
[color=blue]>your 'bum bones' doin' the work. :-7[/color]

Basically there are a few ways I can imagine this working. One is that
the 'legs' of the UU simply keep the wheel from swiveling too much,
reducing some of the difficulty of riding an UW. The legs move in much
the same way as human legs, flexing and straightening so that the seat
stays in one place. It's also possible to attach sth bw the horizontal
bar and the wheel that would have a roller on the bottom -- that might
give the unit some internal support. Otherwise it's possible that the
only thing keeping the unit straight would be the rider's legs, just as
is the case with an UW.

David

Co-founder, Unatics of NY
1st Sunday / 3rd Saturday
@ Central Park Bandshell
1: 30 start time after 11/1/01

[jagur]

holy one wheeled motivation,,,,BATMAN

klaasbil_remove_the_spamkiller_@xs4all.nl (Klaas Bil) wrote in message
news:<3c042b27.9767034@newszilla.xs4all.nl>...
[color=blue]> David Stone e-mailed me a sketch of his Ultimate Unicycle design that he[/color]
[color=blue]> proposed a few days ago. I put it up on[/color]
[color=blue]> http://www.xs4all.nl/~klaasbil/ultimate_uni.htm.[/color]
[color=blue]>[/color]
[color=blue]> Klaas Bil[/color]

Neat idea, but that design won't work. One minor point is the horizontal
slot is not long enough to take into account the range of movement of the
two lower "legs" and even if it were then then the seat would pitch back
and forward through 180 degrees (imagine the pedals at 6 o'clock and 12
o'clock positions then turn wheel through 180 degrees and you might get
some idea). The only way (that I can think of at the moment) to decrease
this angle would be to have a slot that is much longer than the distance
between the pedals and also longer lower legs.

On your web page there was a comment about steam train wheel linkages. One
thing to bear in mind for those is that (generally) the slot in those is
in line with the centre of the wheel. In the case of this contraption the
slot should be vertical (in line with the seat post).

This would still leave the problem of an unsupported seat post. David's
suggestion of the roller seems a decent idea, maybe having two slightly
spaced (one in front of the other) would provide back/forward support.

Mind you, everything I've said here may just be me havering (Scots for
"talking rubbish"), so feel free to ignore it. But this has got me
thinking about this problem, and as I've now got much more time on my
hands than I had before (hence the post as opposed to my normal lurking),
I may come up with something soon (which everyone else can pick holes in!)

Have fun!

Graeme

Graeme (dodsgr@my-deja.com) writes:
[color=blue]>> David Stone e-mailed me a sketch of his Ultimate Unicycle design that[/color]
[color=blue]>> he proposed a few days ago. I put it up on[/color]
[color=blue]>> http://www.xs4all.nl/~klaasbil/ultimate_uni.htm.[/color]
[color=blue]>>[/color]
[color=blue]>Neat idea, but that design won't work. One minor point is the horizontal[/color]
[color=blue]>slot is not long enough to take into account the range of movement of the[/color]
[color=blue]>two lower "legs" and even if it were then then the seat would pitch back[/color]
[color=blue]>and forward through 180 degrees (imagine the pedals at 6 o'clock and 12[/color]
[color=blue]>o'clock positions then turn wheel through 180 degrees and you might get[/color]
[color=blue]>some idea). The only way (that I can think of at the moment) to decrease[/color]
[color=blue]>this angle would be to have a slot that is much longer than the distance[/color]
[color=blue]>between the pedals and also longer lower legs.[/color]
<snip>
[color=blue]>[/color]
[color=blue]>This would still leave the problem of an unsupported seat post. David's[/color]
[color=blue]>suggestion of the roller seems a decent idea, maybe having two slightly[/color]
[color=blue]>spaced (one in front of the other) would provide back/forward support.[/color]
I tihnk Graeme may have provided the idea that makes it possible, and I
am meeting this Sunday with a club member who can draw up tech designs
far better than I. Graeme suggested TWO rollers. I think that if the
rollers were spaced apart about 70-90 degrees and reinforced across the
top, then you could have support for the seat. I realize now that NOT
having a supported seat makes the design impossible since the seat would
keep falling down unless you squoze it with your thighs the whole time
-- no fun.

And if the rollers could be adjusted for their angle, then changing the
angle could raise or lower the seat height.

I'll send sth to Bill Klaas as soon as we have some new sketches.

David Stone

Co-founder, Unatics of NY
1st Sunday / 3rd Saturday
@ Central Park Bandshell
1: 30 start time after 11/1/01

[color={usenetquotecolor2}]> > he proposed a few days ago. I put it up on[/color]
[color={usenetquotecolor2}]> > http://www.xs4all.nl/~klaasbil/ultimate_uni.htm.[/color]

If the goal is a real skinny unicycle, you could use the Schwinn or
Semcycle frame design, and then make a real narrow hub to go with it. If
you wanted to take this idea even further, make some skinny cranks out of
something similar to your frame material. The whole unicycle will twist
left to right and the cranks will bend if you stress 'em, but the unicycle
will be real skinny without huge moving locomotive parts... :-)

John Foss, the Uni-Cyclone jfoss@unicycling.com www.unicycling.com

"If it weren't for the last minute, nothing would get done." - Kevin
"Gilby" Gilbertson

On Wed, 28 Nov 2001 09:32:01 -0500, "David Stone"
<dstone@packer.edu> wrote:

[color=blue]>better than I. Graeme suggested TWO rollers. I think that if the rollers[/color]
[color=blue]>were spaced apart about 70-90 degrees and reinforced across the top, then[/color]
[color=blue]>you could have support for the seat. I realize now that NOT having a[/color]

This resembles the principle of that Chinese unicycle with no spokes or
hub, where the seat rests on the tyre/rim assembly with two rollers. The
link was posted here recently. If you had support for the seat by two
rollers, you might even do away with the iron legs.
[color=blue]>[/color]
[color=blue]>I'll send sth to Bill Klaas as soon as we have some new sketches.[/color]
That's OK David, I have some spare space on the web server.

Klaas Bil (spelled with one l)
--
"To trigger/fool/saturate/overload Echelon, the following has been picked
automagically from a database:" "SISDE, J-Star, l0ck"

[color=blue]> This resembles the principle of that Chinese unicycle with no spokes or[/color]
[color=blue]> hub, where the seat rests on the tyre/rim assembly with two rollers. The[/color]
[color=blue]> link was posted here recently. If you had support for the seat by two[/color]
[color=blue]> rollers, you might even do away with the iron legs.[/color]

What holds the seat up? In other words, what keeps it from toppling to the
side? Simply rubbing at the top of the wheel wouldn't seem a good design,
so perhaps there are more rollers in there. In any case, it's probably not
the most robust design; all show and not much go.

Stay on top, John Foss, the Uni-Cyclone jfoss@unicycling.com
www.unicycling.com

"If it weren't for the last minute, nothing would get done." - Kevin
"Gilby" Gilbertson

[color=blue]> This resembles the principle of that Chinese unicycle with no spokes or[/color]
[color=blue]> hub, where the seat rests on the tyre/rim assembly with two rollers. The[/color]
[color=blue]> link was posted here recently. If you had support for the seat by two[/color]
[color=blue]> rollers, you might even do away with the iron legs.[/color]

What holds the seat up? In other words, what keeps it from toppling to the
side? Simply rubbing at the top of the wheel wouldn't seem a good design,
so perhaps there are more rollers in there. In any case, it's probably not
the most robust design; all show and not much go.

Stay on top, John Foss, the Uni-Cyclone jfoss@unicycling.com
www.unicycling.com

"If it weren't for the last minute, nothing would get done." - Kevin
"Gilby" Gilbertson

On Wed, 28 Nov 2001 15:00:53 -0800, John Foss
<john_foss@asinet.com> wrote:

[color=blue]>> This resembles the principle of that Chinese unicycle with no spokes or[/color]
[color=blue]>> hub, where the seat rests on the tyre/rim assembly with two rollers.[/color]
[color=blue]>> The link was posted here recently. If you had support for the seat by[/color]
[color=blue]>> two rollers, you might even do away with the iron legs.[/color]
[color=blue]>[/color]
[color=blue]>What holds the seat up? In other words, what keeps it from toppling to[/color]
[color=blue]>the side? Simply rubbing at the top of the wheel wouldn't seem a good[/color]
[color=blue]>design, so perhaps there are more rollers in there. In any case, it's[/color]
[color=blue]>probably not the most robust design; all show and not much go.[/color]
[color=blue]>[/color]
John, haven't you seen the pic for which the URL was posted here recently?
I can't find it right now. Yes you are right, there must be something that
keeps the top assembly vertical, and that may well involve more rollers
against the side of the main wheel.

Klaas Bil
--
"To trigger/fool/saturate/overload Echelon, the following has been picked
automagically from a database:" "POORTSCAN, Lanceros, redheads"