Holy Grail of Suspension unicycles. HA! EUREKA!



Howdy again guys, Thanks for the compliments, and the ideas to improve
it. Today during school ive solved some structural problems with it.

top: the single berring to support that axel will be held with 2
berrings on a metal plate attached to the frame, oh also, the fact im
not putting the axel through the seatpost is because it was an
afterthought on my frist plans because it was harder to run it through,
now that i solved my berring problems it should be easier. ALSO, my
sprokets are going to be far smaller than what i have in the plans,
they will also probably be right on the flat T of the frame (brain fart
on the word atm), which will make it harder to get things hooked on it,
i'll also have some sort of sheetmetal, or plastic molded casing over
it.

Bottom: I solved my problems with the action factor in my 'pistons' (or
shocks), im going to make it look like a piston for the most part, but
it's going to be a spring system (i'll post a sketch later) and that
will give me the stability of the piston, with the reaction and play of
a spring. I'm also going to try and get really heavy duty springs, i'll
play with some and find whats right. My chain tensioner is going down
just to my spring/piston idea, thats what the shaft is going to be (i
hope, depends) i'll have some plates welded mabye to give it a stopping
point so i doesnt derail.

Cranks: My cranks will stay in the same place and everything that they
are, i'm going to reinforce how their mounted, by puting a metal plate
along the side of the frame, unless my bike tubing is good enough.

Tire: im going to limit how much travel it has, i'm going to allow it
3'' probably, depending on my springs. I might also have a curved t on
my frame, so my tire can move. My tire is just gonna be a 20'' off my
old nimbus freestyle (which i totaly wrecked)

Overall: i solved all my problems with help from you guys, my friends,
and my dad and brother. Thank you so much peoplez :D , I hope to get
started on it this weekend mabye, just need to go to a junk pile. I'll
be able to scavange all my parts hopefully. I'm gonna start drawing
more plans tonight, well, tracing the ones i have i think, because i
want the originals.


p.s. thanks John:D


--
unibikeling

unibikeling wrote:
>
> chrome wrote:
> > Difficult to mount, but a fun ride once you get her going....

>
> -if only my unicycle was that dirty




'lol...' (http://www.internetisseriousbusiness.com)

my 'myspace' (http://www.myspace.com/gramwashere)
------------------------------------------------------------------------
unibikeling's Profile: http://www.unicyclist.com/profile/14752
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
mscalisi wrote:
> It just occured to me that with both the flexy cranks (awesome idea!)
> and the suspension wheel unicycle that there is a potential problem.
>
> The unicycle frame, now decoupled from the wheel, has the potential to
> accelerate indepenently toward your crotch as you land the drop.
> Actually, more accurately, as you land the frame would start
> deccelerating faster than your crotch. You would have to ride with your
> seat several inches lower than usual.




Or include a suspension seat post/forks.


--
tholub
------------------------------------------------------------------------
tholub's Profile: http://www.unicyclist.com/profile/804
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
sorry guys, gotta go to a wake in a sec, anyway

I might add a suspension seatpost also, if i have space, i have my own
ideas for an inexpensive one lol. At the moment my feat is to make the
unicycle as i plan it


--
unibikeling

unibikeling wrote:
>
> chrome wrote:
> > Difficult to mount, but a fun ride once you get her going....

>
> -if only my unicycle was that dirty




'lol...' (http://www.internetisseriousbusiness.com)

my 'myspace' (http://www.myspace.com/gramwashere)
------------------------------------------------------------------------
unibikeling's Profile: http://www.unicyclist.com/profile/14752
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
thejdw wrote:
> but if that was taken off a large drop then in could bend, beyond its
> elastic properties.




I have discovered the limits of the "elastic properties" of standard
cranks. The type of metal, thickness, and degree of temper could be
varied. (define large drop)


--
sutton629

'Myspace' (http://www.myspace.com/sutton629)
------------------------------------------------------------------------
sutton629's Profile: http://www.unicyclist.com/profile/15900
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
not to be a buzz kill but unless you have a couple years of machining,
welding, and fabricating experience which i highly doubt you do this
will be damn near impossible. its one thing to make a doodle of it. do
you have any technical drawings of it? dimensions? do you know what
your going to make it out of? who is going to do the machining? and
what are they going to use to make the parts?

this project will take money and lots of it. 50$ and a spare uni frame
isnt gunna cut it. also this isnt a weekend (yay lets build something)
kinda thing this is more like a senior thesis.

the idea is very good, but i doubt you will make any process on it, and
you will soon realize this. hopefully someone with more skills and
deeper pockets could bring this to life. this design has hope

someone needs to CAD this up, we can then go from there.


--
c9ollie
------------------------------------------------------------------------
c9ollie's Profile: http://www.unicyclist.com/profile/13989
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
Even if it doesn't work, think of all the machining, welding, and
fabricating experience he'll get while working on it.

He also may surprise you.


c9ollie wrote:
> not to be a buzz kill but unless you have a couple years of machining,
> welding, and fabricating experience which i highly doubt you do this
> will be damn near impossible. its one thing to make a doodle of it. do
> you have any technical drawings of it? dimensions? do you know what
> your going to make it out of? who is going to do the machining? and
> what are they going to use to make the parts?
>
> this project will take money and lots of it. 50$ and a spare uni frame
> isnt gunna cut it. also this isnt a weekend (yay lets build something)
> kinda thing this is more like a senior thesis.
>
> the idea is very good, but i doubt you will make any process on it, and
> you will soon realize this. hopefully someone with more skills and
> deeper pockets could bring this to life. this design has hope
>
> someone needs to CAD this up, we can then go from there.



--
mscalisi

><> Unicycle for (reducing the) Buddha <><

------------------------------------------------------------------------
mscalisi's Profile: http://www.unicyclist.com/profile/4961
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
unibikeling, you should check 'Hugos post' (http://tinyurl.com/yuuzsw)
in your other thread. His design is brilliantly simple and if you had
the arms that make the triangle pivot at the center points of the gears
(eg. directly behind the cranks and on the wheel axle) you would not
have any changes in chain tension and also you would not have any
rotation of the cranks or the pedals with the compression of the
suspension.

His design fixes the two biggest problems with yours and does not
require much for extra parts. I urge you to consider his design as the
vertical chain and dynamic tensioner that you have now will only cause
you headaches.


--
saskatchewanian
------------------------------------------------------------------------
saskatchewanian's Profile: http://www.unicyclist.com/profile/14180
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
Designing machines and processes is definitely a cool way to spend time
because there are so many tangents that lead to other things... But
sometimes simple is better. The Harper's idea to spring the cranks is
beautiful in it's simplicity. If a full sized car can have torsion
suspension it isn't out of the question to come up with a system that
could survive. If the system does get overloaded and deformed, it would
suck a lot less than getting compression fractures. They hurt... They
hurt pretty bad.


--
PetePuma
------------------------------------------------------------------------
PetePuma's Profile: http://www.unicyclist.com/profile/16541
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
c9ollie wrote:
> not to be a buzz kill but unless you have a couple years of machining,
> welding, and fabricating experience which i highly doubt you do this
> will be damn near impossible. its one thing to make a doodle of it. do
> you have any technical drawings of it? dimensions? do you know what
> your going to make it out of? who is going to do the machining? and
> what are they going to use to make the parts?
>
> this project will take money and lots of it. 50$ and a spare uni frame
> isnt gunna cut it. also this isnt a weekend (yay lets build something)
> kinda thing this is more like a senior thesis.
>
> the idea is very good, but i doubt you will make any process on it, and
> you will soon realize this. hopefully someone with more skills and
> deeper pockets could bring this to life. this design has hope
>
> someone needs to CAD this up, we can then go from there.




^^^ is the inspiration i need. Captain Buzz Kill, i seriously think i
can go against all of your logic and create this. You think im
seriously machining things? i can get all this done with a plasma
torch, wirefeed welder, some bike parts, and my old uni. Ive thought it
over and over, and ive replaced things with other things, then taken
them back down to reduce weight. Considerrably, $50 is what i need, all
i need are a few berrings and housings for them, all other metal i can
get from around my house. Another thing too, i dont have too much
expertice, but my dad does. Same with my brother, and the community of
unicyclist.com. I believe i can do this.


Also:
hugo wrote:
> I thought about an alternative chain solution.
>
> I wanted to make sure that the frame is still straight, so you still
> sit right on top of the axle.
>
> The cranks are split like in dangerdog's drawing. The frame is
> suspended between the axle and the cranks.
>
> It may weight even more because you need 4 chains in total.
>
> Just an idea
> Attached Images
>
>




Thats a splendid idea, brilliant. I might give that one a try also, i
may just take like a small wheel, or something, and create a small one,
just to see how it works. (i probably wont though) but grats on the
design. My design on the other hand, i think, would allow more travel
on the tire, possibly not.

Edit: for my design, i want the cranks and pedals to stay relatively in
the center, and im not going for any muni or trials at the moment,
possibly later if i like build it like a tank, but not its just like to
see what it does, explore its depths, and see what happens on road
riding, see how smooth i can make it.

so, best of luck to anyone else trying to win the space race of
suspension!:D


p.s. c9ollie, its not a doodle, it's a planned out sketch, that took
hours of thinking, a doodle would look like -[image:
http://www.cuttingedge.org/Circle_With_Dot.JPG]


--
unibikeling

unibikeling wrote:
>
> chrome wrote:
> > Difficult to mount, but a fun ride once you get her going....

>
> -if only my unicycle was that dirty




'lol...' (http://www.internetisseriousbusiness.com)

my 'myspace' (http://www.myspace.com/gramwashere)
------------------------------------------------------------------------
unibikeling's Profile: http://www.unicyclist.com/profile/14752
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
Regarding the flexible crank arms; might you be able to implement that
just by making cranks out of titanium? Titanium's ductility would
provide the spring, and the cranks could still be made pretty strong.


--
tholub
------------------------------------------------------------------------
tholub's Profile: http://www.unicyclist.com/profile/804
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
and also great idea on the flexi cranks, could solve a lot


--
unibikeling

unibikeling wrote:
>
> chrome wrote:
> > Difficult to mount, but a fun ride once you get her going....

>
> -if only my unicycle was that dirty




'lol...' (http://www.internetisseriousbusiness.com)

my 'myspace' (http://www.myspace.com/gramwashere)
------------------------------------------------------------------------
unibikeling's Profile: http://www.unicyclist.com/profile/14752
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
has anyone thought about using hydraulics? it wouldnt work quite like
suspension. but you could just drop the frame so it's right on your
tire when you park it. actually you probably use something like the
set up in an office chair. you just wouldnt be able to raise it while
you were rollin. I know a guy in edmonton here who builds billet
wheels and he figures he could build something to work with a uni hub.
then just do a lil gold flake chameleon paint job on there. big pimpin
ladies. big pimpin:cool:


--
UNIdentified
------------------------------------------------------------------------
UNIdentified's Profile: http://www.unicyclist.com/profile/15274
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
UNIdentified wrote:
> has anyone thought about using hydraulics? it wouldnt work quite like
> suspension. but you could just drop the frame so it's right on your
> tire when you park it. actually you probably use something like the
> set up in an office chair. you just wouldnt be able to raise it while
> you were rollin. I know a guy in edmonton here who builds billet
> wheels and he figures he could build something to work with a uni hub.
> then just do a lil gold flake chameleon paint job on there. big pimpin
> ladies. big pimpin:cool:




Your talking about a tire with hydraulic pistons in it? well, if you
are, tjpse sytems dont work unless your able to mount a piston in one
area, and not have it move, which would sorta defeat and abilites, if
your talking in the frame, its not actuall suspension


--
unibikeling

unibikeling wrote:
>
> chrome wrote:
> > Difficult to mount, but a fun ride once you get her going....

>
> -if only my unicycle was that dirty




'lol...' (http://www.internetisseriousbusiness.com)

add me to your myspace! -'myspace' (http://www.myspace.com/gramwashere)
------------------------------------------------------------------------
unibikeling's Profile: http://www.unicyclist.com/profile/14752
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
I'm talkin about having the "pistons" in the frame. So that it would
raise the frame to a comfortable length for cruising but u could lower
it just for fun. Id love to just roll up to the store on my uni and
lower the hell out of it, then you ride it real nice and slow. That
would be badass.


--
UNIdentified
------------------------------------------------------------------------
UNIdentified's Profile: http://www.unicyclist.com/profile/15274
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
sounds cool. Draw up some plans man lol. instead of the frame, why dont
you jsut do seatpost? because the frame would end up sitting on the
tire lol. A seatpost with a deskchair hydraulic in it would be pretty
cool


--
unibikeling

unibikeling wrote:
>
> chrome wrote:
> > Difficult to mount, but a fun ride once you get her going....

>
> -if only my unicycle was that dirty




'lol...' (http://www.internetisseriousbusiness.com)

add me to your myspace! -'myspace' (http://www.myspace.com/gramwashere)
------------------------------------------------------------------------
unibikeling's Profile: http://www.unicyclist.com/profile/14752
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
the seat post would be easier. this is true. but im thinkin of it more
from a "car guy" sorta view. and the idea with that is to have the
frame sitting on the tire for show when its parked. with as little
clearance between the frame and the tiree as possible. but its just a
loosely concieved idea. a vision.


--
UNIdentified
------------------------------------------------------------------------
UNIdentified's Profile: http://www.unicyclist.com/profile/15274
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
its still a great idea though. Im looking forward to see a hydraulic
unicycle lol..


--
unibikeling

unibikeling wrote:
>
> chrome wrote:
> > Difficult to mount, but a fun ride once you get her going....

>
> -if only my unicycle was that dirty




'lol...' (http://www.internetisseriousbusiness.com)

add me to your myspace! -'myspace' (http://www.myspace.com/gramwashere)
------------------------------------------------------------------------
unibikeling's Profile: http://www.unicyclist.com/profile/14752
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
Hopefully this pic will load. I tried to come up with a simple way to do
it. maybe use an elastomer instead of springs. This is just an idea,
not a worked out design.


--
PetePuma
------------------------------------------------------------------------
PetePuma's Profile: http://www.unicyclist.com/profile/16541
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com
 
My bad..


+-------------------------------------------------------------------+
|Filename: try again.jpg |
|Download: http://www.unicyclist.com/attachment/25018 |
+-------------------------------------------------------------------+

--
PetePuma
------------------------------------------------------------------------
PetePuma's Profile: http://www.unicyclist.com/profile/16541
View this thread: http://www.unicyclist.com/thread/67525


Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.usenet.com