Ratcheting crank or something...

I was just wondering if anyone out there has made a uni that you can pedal forward but when going in reverse you just spin the crank, Bicycle style. This would allow you to coast better I think without the crank arms moving…

I was thinking if some ratcheting crank/hub could be made doing stuff like vert might be a real possibility.

Just a though

(Do you guys follow?? if not say I’m crazy, and I need to shut the fuck up or some shite like that and I’ll try to explain better tomorrie)

Re: Ratcheting crank or something…

I’m crazy

I dunno whether anyone’s actually tried it, but I strongly suspect that if you had a uncycle like this the second you go a little bit too fast you’d fall off… you’d have no way of correcting a slight lean forwards, which is A Bad Thing. And probably A Painful Thing too.

Phil, just me

Re: Ratcheting crank or something…

> I dunno whether anyone’s actually tried it, but I strongly suspect that
> if you had a unicycle like this the second you go a little bit too fast
> you’d fall off… you’d have no way of correcting a slight lean
> forwards, which is A Bad Thing. And probably A Painful Thing too.

Sure you do. Pedal faster to correct a forward lean.

A backward lean is usually handled by braking - trying to pedal backward -
which wouldn’t work here, but a hand brake might suffice.

The forward lean problem becomes Bad, Painful, and Scary because it’s so
easy to coast. If you can’t pedal faster than 20 mph, for example, and
you’re coasting downhill at 21 mph, THEN you have no way to correct, and
that fall is gonna hurt.

Or is that what you meant by a little bit too fast? Seems much too fast to
me…

Re: Re: Ratcheting crank or something…

Err, umm, err…

<re-engage brain>

I think I meant backwards lean. I’m not actually sure any more. Either way, I often find myself putting weight on slowing the pedals down to stay under control; you couldn’t do that with a ratchet hub. Going down hills would indeed be interesting, albeit briefly…

Phil, just me

RE: Ratcheting crank or something…

> I was just wondering if anyone out there has made a uni that you can
> pedal forward but when going in reverse you just spin the
> crank, Bicycle
> style. This would allow you to coast better I think without the crank
> arms moving…

Ken Fuchs made one about 10 years ago, using some sort of one-way needle
bearing system. It worked fine, and was pretty challenging to ride (for
people who coast), but eventually the bearings died. I think they were not
intended for the forces of unicycling. I don’t think he’s rebuilt it.

You wouldn’t want to ride it downhill. Even a little hill!

JF

Re: Ratcheting crank or something…

Is it just me? I have a strong deja-vu at this thread, down do actual
wording.

Klaas Bil

On Thu, 20 Jun 2002 11:32:35 -0700, John Foss <john_foss@asinet.com>
wrote:

>> I was just wondering if anyone out there has made a uni that you can
>> pedal forward but when going in reverse you just spin the
>> crank, Bicycle
>> style. This would allow you to coast better I think without the crank
>> arms moving…
>
>Ken Fuchs made one about 10 years ago, using some sort of one-way needle
>bearing system. It worked fine, and was pretty challenging to ride (for
>people who coast), but eventually the bearings died. I think they were not
>intended for the forces of unicycling. I don’t think he’s rebuilt it.
>
>You wouldn’t want to ride it downhill. Even a little hill!
>
>JF

Re: Ratcheting crank or something…

In a message dated 6/20/02 12:21:07 PM Eastern Daylight Time,
Checkernuts.6jb2m@timelimit.unicyclist.com writes:

> I was just wondering if anyone out there has made a uni that you can
> pedal forward but when going in reverse you just spin the crank, Bicycle
> style. This would allow you to coast better I think without the crank
> arms moving…
>
> I was thinking if some ratcheting crank/hub could be made doing stuff
> like vert might be a real possibility.
>
> Just a though
>
> (Do you guys follow?? if not say I’m crazy, and I need to shut the fuck
> up or some shite like that and I’ll try to explain better tomorrie)

I think your crazy. I also think we have all thought of this at some point,
and then quicly realized the problem. Most of your balencing is done by
applying pressure on the upstroke of the pedal as well as the downstroke.
With a freeweel, we lean back by the slightest amount, or hit a small
unexpected slope, and its all over. I’v thought about doing a modified
freeweel, where the cranks could be dissengaged with something like a brake
lever under the seat, but most of the time works like an ordinary fixed axle.
__
Trevor andersen

Re: Ratcheting crank or something…

>I was just wondering if anyone out there has made a uni that you can
>pedal forward but when going in reverse you just spin the crank, Bicycle
>style. This would allow you to coast better I think without the crank
>arms moving…

Yes. Tom Miller and I built a forward only drive unicycle using a
clutch bearing that free wheels in the reverse and grips when pedaled
forward. Check the archives around about about a month ago for a rather
complete description of it which I <kfuchs@winternet.com> wrote.

Sincerely,

Ken Fuchs <kfuchs@winternet.com>

Re: Ratcheting crank or something…

>> I was just wondering if anyone out there has made a uni that you can
>> pedal forward but when going in reverse you just spin the
>> crank, Bicycle
>> style. This would allow you to coast better I think without the crank
>> arms moving…

John Foss <john_foss@asinet.com> wrote:

>Ken Fuchs made one about 10 years ago, using some sort of one-way needle
>bearing system. It worked fine, and was pretty challenging to ride (for
>people who coast), but eventually the bearings died. I think they were not
>intended for the forces of unicycling. I don’t think he’s rebuilt it.

I rebuilt it with a spare clutch bearing. I turned the seat around so
it would grip in reverse and freewheel forward. I described this all in
much detail in a post about a month ago.

>You wouldn’t want to ride it downhill. Even a little hill!

Actually a slight slope down would be great, because one could coast all
the way down, assuming the road and air frictional forces equaled the
gravity provided propulsion force. However, I think John to refering to
the lack of a braking system when he suggests NOT to use it going down a
hill.

Sincerely,

Ken Fuchs <kfuchs@winternet.com>