unicycle as trailer behind a bike?

A unicycle would make a pretty bad trailer. Spin a unicycle wheel really
fast. What happens? Oh yeah. Those cranks and pedals keep it from
spinning in a straight line!

Better to get one of those one-wheeled bike trailers, and put one or
more unicycles in that.

--
johnfoss - Walkin' on the edge

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

"I should be wearing a helmet here -- so should you." -- George Peck,
who almost never wears one, in the 1991 video Rough Terrain Unicycling
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Quoted message said:

Those cranks and pedals keep it from spinning in a straight line!

That's right. It should have a flexible heavily damped connection.
Removing the crancks will solve this problem. Or just rotate one of the
cranks 180 degrees.

I saw on http://tinyurl.com/25nw7
that you can buy the fork for around 50 dolllars and a quick release for
25 dollars. The only thing to realise is a clamping mechanism to the
seat post.

John

--
baar
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Do what I did.

Hang the bike from the ceiling in the garage. Ride the Uni.😉

--
Memphis Mud - Student of GrandMaster 2T

Mantra: Avoid Hitting Tailbone...Avoid Hitting Tailbone...

"do not think, just ride"...muniracer
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Taking the cranks off the uni would kind of defeat the purpose, unless
the idea is to make a trailer out of a unicycle. That would be cool,
except the lack of cranks might make it look less like a unicycle.

Rotate one crank 180 degrees? I don't think you thought that one
through. Sure it would be a straight line in one direction, but not up
and down!

--
johnfoss - Walkin' on the edge

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

"I should be wearing a helmet here -- so should you." -- George Peck,
who almost never wears one, in the 1991 video Rough Terrain Unicycling
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johnfoss said:

A unicycle would make a pretty bad trailer. Spin a unicycle wheel really
fast. What happens? Oh yeah. Those cranks and pedals keep it from
spinning in a straight line!

Better to get one of those one-wheeled bike trailers, and put one or
more unicycles in that.

I agree. I can carry 3 unicycles and a load of juggling kit on my Yak,
if I want to.

I've also seen a yike carried on a Bike Hod, which worked very well.

--
Danny Colyer (the UK company has been laughed out of my reply address)
<url:http://www.speedy5.freeserve.co.uk/danny/>
"He who dares not offend cannot be honest." - Thomas Paine

Hi,
I know someone who just bored a hole in each end of a piece of wood and
put the bike seat post through one hole and the uni seat post through
the other with the uni seat tied to the wood to stop it rotating. I
don't think it was ideal for long distances but it cost nothing.
It worked ok on smooth surfaces, it was difficult to steer round sharp
corners.

/\/\

--
mike.hinson - Unicyclist since Nov 2000

"I have to overcome a 'stress hill' when tightening the nuts, but once
installed they sit in a 'stress valley'. "

--Klaas Bil
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I had 2 post this......

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--
thinuniking - we met a tree hugger(he rode a bike

MUNI MILITIA now in the uk!
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thinuniking said:

*I had 2 post this...... *

And the 'Trail-A-Uni' (http://tinyurl.com/ys5bo). After all, it only has
one wheel!

--
UniBrier - Its Time to Ride

Steve De Cuckoo

"Only an idiot would try to ride a pointed stick with a wheel on the
bottom." - ‘tiped again’ on the early stages of mastering the uni.

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baar said:

*Or just rotate one of the cranks 180 degrees.
*

that might work, but it would cause the uni to hop when going fast. I
think a better solution is to have a counter weight that attaches to
each crank. Ideally, it would be able to be attached and removed
quickly.

my $.02
Daniel

--
daino149 - How's it going, Texas?

there ain't enough body armor in the country for me to try that. -- Ken
on the mtbr forum in reference to MUni
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tie a rope to it and drag it

--
dubmuni2004 - I obviously dont have another wheel

I dont have a signature
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I think that i have found the stupid answer:
This was brought on by neccessity as I had just buckled my wheel a
couple of miles from my house>😄

Incidentally though I hace been working on a unicycle attachment thing
for my bike (the previously mentioned bit of wood with two holes bored
in it) and would be intrested to know if anybody has some thoughts on
how to design a better version. The problem with my first attempt (now
cruelly serving an alternative purpose of heating our house!) was that
because neither the bike seat post nor the unicycle seat post could be
held vertical the holes in the wood could also not be vertical. This
meant that if you wanted to turn a corner, dicounting a certain amount
of play from slightly too large holes and a long, slightly bendy bit of
wood, the unicylce would lift off the ground. Because of the play that
I mentioned before you could still get round gentle corners like this
but it was a bit bouncy!

Does anyone have any thoughts about the possibility of using some kind
of joint that would allow movement of the unicycle in all 3 planes?
Perhaps if it were too loose and easy to turn the unicycle would just
flop over?

Thanks for any help
Tim

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uni.wobbler - slightly bouncy unicyclist
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There are a few threads from Sofa and I about carrying unicycles on,
rather than behind, bikes. I think he is currently winning as I don't
have enough unicycles to keep up... 🙂

There are (poor quality) photos of my bike with two munis on it in 'this
thread' (http://tinyurl.com/2j6m4), but I can't find the more recent one
from Sofa with half his house on the back of the bike...

Phil

--
phil - ex-studenty type

"Cattle Prods solve most of life's little problems."
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Quoted message said:

Spin a unicycle wheel really fast. What happens?

I know it will wobble, but I don't know how big the wobbling will be. It
depends on the inertia of your cranks and pedals, but also on the
inertia of your wheel. The larger the wheel and the smaller the cranks,
the smaller the wobbling will be.

I did not do any calculations, but intuitively I expect the wobbling
will be halvated by removing the pedals (T=I*dw/dt and I=Integral rho
R^2 dV). And the wobbling can also be halvated by using 4.5" in stead of
7" cranks.

I am now thinking of making a U-shaped thing with a part of a seat post
connected to it:

|
-----|
|
|=== part of seat post to connected to uni.
|
-----|
|
rotation point

I don't know what should be easier: connecting the uni by 4 bolts (from
the saddle) or use a circular tube

I am also thinking of clamping a rail to the front fork and to
the fork of the uni to be able to mount bags for a low rider.

--
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The center part is misaligned and should have been shifted to the
right.

|
-----|
......|
......|=== part of seat post to connected to uni.
......|
-----|
|

--
baar
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baar said:

*> Spin a unicycle wheel really fast. What happens?

I know it will wobble, but I don't know how big the wobbling will be.
*

Trusst me, it will be very annoying. The faster you go, the more
powerful the wobbling force will be. If you mean to tow behind a bike
you may not go too fast, but the wobbling will probably be felt in the
bike.

If you take the pedals off it will make a big difference, but that takes
away from your convenience factor.

My worst-ever unicycle crash was caused by wobble. I was running down
the street pushing my 6' Schwinn in front of me. The rpms got so fast,
the wheel started bouncing off the ground and lost control. I tripped
over it. Ouch.

--
johnfoss - Walkin' on the edge

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

"I should be wearing a helmet here -- so should you." -- George Peck,
who prefers not to wear one, in the 1991 video Rough Terrain Unicycling
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