home made geared uni

aaergjk;afgjjjjjjjjjjsthasjnavvakj😄 😉 😠 🙁

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good work🙂

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tibluni
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Video or it didn't happen :eek:

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thats awesome man!
i hope it hold up alright.

Chase

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YAMS

-last edited by the dave and sigpoose on 2005-09-05 at 08:56 pm -
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That is 1 awesome looking unicycle you have there my friend. Good work
too also. 😄

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1 WEIRD AND UNUSUAL GREEK
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IS DESTINED TO BE DIFFERENT AND I WON'T STOP TILL I AM.

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ivan said:

Its a wild ride, grabs me by the shoe-lace, and doesn't let go till I do
a face-plant.

😄 ' My kind of driving with my favourite car.'
(

) 😄
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Stunning... simply stunning.

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Nice work!

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i made my own geared uni and posted a video of it 'here'
(

)

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Tyler_N

'my latest video!' (

)

JJtheunicycle said:

If I had a nickel for every time... I would probably have 1, maybe 2
nickels.

'*ADD ME!!*' (myspace.com/munirider)
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:eek: !-

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ridingwithscissors

habbywall said:

ridingwithscissors is officially dumb.

Imagination is the one weapon in the war against reality.
JULES DE GAULTIER

vanpaun said:

evil spelling nazi

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That is too cool. Congratulations on making a successful geared uni.

I wonder if the second version would have ended up working if the frame
was stiff enough?

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john_childs said:

That is too cool.

Yes, VERY!

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holy [censored], nice work!

looks like you're close to being able to run a derailleur for some
gearing on the fly 🙂

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Too bad the initial gearing didn't work out. I would still like to see a
viable version of that implementation. The jack shaft design is a good
one that has been thoroughly proven on Pete Perron's three versions
(also homemade) of the idea. The simplest and cheapest of the homemade
jack shaft driven unicycles has to be Tyler's but we haven't had much
of an update on it since his major axle modification.

You have the sprockets separated by quite a distance. Is that to give
you as much room as possible to fit them between the spokes and the
frame up towards the rim? The long chains probably add a bit of weight
as well as increase the amount of backlash due to the extra chain
links. It may not be possible for you to locate the sprockets down
where the spokes flare out to the hub flange, though. Cool
implementation. Did you do all the work yourself? About how many hours?

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harper

-Greg Harper

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Guys that is awesome! Having been there, congrats on putting in the all
the time and effort it takes to create a rolling work of metal art!
Respect has been earned. 😄

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Hey man thats cool do use a front derailler off a bike or something?

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uniethan
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would some kind of hydraulic deraileur work? i know a regular one
wouldn't because the spring tension is too low...

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<> Unicycle For Christ <><

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🙂 do it for the joy, do it for the fun, do it for the looks on
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on a unicycle!!!!!... then you realize its the 100th time you've done
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Very cool engineering project. Mind the pant legs!

harper said:

Too bad the initial gearing didn't work out. I would still like to see a
viable version of that implementation.

I once rode something sort of similar, a reverse-drive unicycle built
with cogs just above or below the axle. It rode like a two-wheeled
unicycle, only on the ground. You could sense the friction in the
gearing, but it was probably a lot less than the friction you get with
a tire-friction two-wheeler.

Pictures? This was 1984 or so. Someday I'll have to do a massive
scanning project... :p

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thankyou all for your interest,and credit to all those before me who
have designed or built geared uni's.My interest came about from
searching the internet ,Harpers geared hub, the shlumpf and others gave
great inspiration.My initial design was my dream and worked well on the
workshop bench and was a beautiful thing but didn't work in
practice.The chain drive was really just a salvage operation.I did all
the work myself spending I guess about 200 hours and costing about 50
dollars.All the gear cogs ,rim ,spokes etc were recycled from old
bikes.The position of the jackshaft was where the greatest clearance
existed between the forks and wheel as initially I was going to use a
modified freewheel but I came up with a much slimmer setup so I could
lower the jackshaft to any position now.The build was very low tech
mostly using angle grinder,electric arc welder,cheap drill press.The
inside of the hub was skimmed on a friends lathe ,the shafts were built
up with weld and taken down to size in my drill press with an angle
grinder and file to suit the bearings.It is one gear only there is no
scope for changing gear.
[image:
http://i255.photobucket.com/albums/hh155/dangerdog_photo/100_3604.jpg]

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Pardon my ignorance on the whole geared uni thing but do you actually
shift gears? If so, how? Or is it a permanent gearing ratio change? I
think it is awesome especially Tyler N.'s "it's done" video but I am
still confused having never seen one in person.

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rem48
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